MagickCore  6.9.12-59
Convert, Edit, Or Compose Bitmap Images
draw.c
1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 % %
4 % %
5 % %
6 % DDDD RRRR AAA W W %
7 % D D R R A A W W %
8 % D D RRRR AAAAA W W W %
9 % D D R RN A A WW WW %
10 % DDDD R R A A W W %
11 % %
12 % %
13 % MagickCore Image Drawing Methods %
14 % %
15 % %
16 % Software Design %
17 % Cristy %
18 % July 1998 %
19 % %
20 % %
21 % Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
22 % dedicated to making software imaging solutions freely available. %
23 % %
24 % You may not use this file except in compliance with the License. You may %
25 % obtain a copy of the License at %
26 % %
27 % https://imagemagick.org/script/license.php %
28 % %
29 % Unless required by applicable law or agreed to in writing, software %
30 % distributed under the License is distributed on an "AS IS" BASIS, %
31 % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32 % See the License for the specific language governing permissions and %
33 % limitations under the License. %
34 % %
35 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36 %
37 % Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38 % rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39 % Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40 % (www.appligent.com) contributed the dash pattern, linecap stroking
41 % algorithm, and minor rendering improvements.
42 %
43 */
44 ␌
45 /*
46  Include declarations.
47 */
48 #include "magick/studio.h"
49 #include "magick/annotate.h"
50 #include "magick/artifact.h"
51 #include "magick/blob.h"
52 #include "magick/cache.h"
53 #include "magick/cache-private.h"
54 #include "magick/cache-view.h"
55 #include "magick/channel.h"
56 #include "magick/color.h"
57 #include "magick/color-private.h"
58 #include "magick/colorspace.h"
59 #include "magick/colorspace-private.h"
60 #include "magick/composite.h"
61 #include "magick/composite-private.h"
62 #include "magick/constitute.h"
63 #include "magick/draw.h"
64 #include "magick/draw-private.h"
65 #include "magick/enhance.h"
66 #include "magick/exception.h"
67 #include "magick/exception-private.h"
68 #include "magick/gem.h"
69 #include "magick/geometry.h"
70 #include "magick/image-private.h"
71 #include "magick/list.h"
72 #include "magick/log.h"
73 #include "magick/memory-private.h"
74 #include "magick/monitor.h"
75 #include "magick/monitor-private.h"
76 #include "magick/option.h"
77 #include "magick/paint.h"
78 #include "magick/pixel-accessor.h"
79 #include "magick/pixel-private.h"
80 #include "magick/property.h"
81 #include "magick/resample.h"
82 #include "magick/resample-private.h"
83 #include "magick/resource_.h"
84 #include "magick/splay-tree.h"
85 #include "magick/string_.h"
86 #include "magick/string-private.h"
87 #include "magick/thread-private.h"
88 #include "magick/token.h"
89 #include "magick/transform.h"
90 #include "magick/utility.h"
91 ␌
92 /*
93  Define declarations.
94 */
95 #define BezierQuantum 200
96 #define PrimitiveExtentPad 4296.0
97 #define MaxBezierCoordinates 67108864
98 #define ThrowPointExpectedException(image,token) \
99 { \
100  (void) ThrowMagickException(&(image)->exception,GetMagickModule(),DrawError, \
101  "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
102  status=MagickFalse; \
103  break; \
104 }
105 ␌
106 /*
107  Typedef declarations.
108 */
109 typedef struct _EdgeInfo
110 {
112  bounds;
113 
114  double
115  scanline;
116 
117  PointInfo
118  *points;
119 
120  size_t
121  number_points;
122 
123  ssize_t
124  direction;
125 
126  MagickBooleanType
127  ghostline;
128 
129  size_t
130  highwater;
131 } EdgeInfo;
132 
133 typedef struct _ElementInfo
134 {
135  double
136  cx,
137  cy,
138  major,
139  minor,
140  angle;
141 } ElementInfo;
142 
143 typedef struct _MVGInfo
144 {
146  **primitive_info;
147 
148  size_t
149  *extent;
150 
151  ssize_t
152  offset;
153 
154  PointInfo
155  point;
156 
158  *exception;
159 } MVGInfo;
160 
161 typedef struct _PolygonInfo
162 {
163  EdgeInfo
164  *edges;
165 
166  size_t
167  number_edges;
168 } PolygonInfo;
169 
170 typedef enum
171 {
172  MoveToCode,
173  OpenCode,
174  GhostlineCode,
175  LineToCode,
176  EndCode
177 } PathInfoCode;
178 
179 typedef struct _PathInfo
180 {
181  PointInfo
182  point;
183 
184  PathInfoCode
185  code;
186 } PathInfo;
187 ␌
188 /*
189  Forward declarations.
190 */
191 static Image
192  *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
193  ExceptionInfo *);
194 
195 static MagickBooleanType
196  DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *),
197  RenderMVGContent(Image *,const DrawInfo *,const size_t),
198  TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
199  TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
200  const double,const MagickBooleanType,const MagickBooleanType),
201  TraceBezier(MVGInfo *,const size_t),
202  TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
203  TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
204  TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
205  TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
206  TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
207  TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
208 
209 static PrimitiveInfo
210  *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
211 
212 static ssize_t
213  TracePath(Image *,MVGInfo *,const char *);
214 ␌
215 /*
216 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
217 % %
218 % %
219 % %
220 % A c q u i r e D r a w I n f o %
221 % %
222 % %
223 % %
224 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
225 %
226 % AcquireDrawInfo() returns a DrawInfo structure properly initialized.
227 %
228 % The format of the AcquireDrawInfo method is:
229 %
230 % DrawInfo *AcquireDrawInfo(void)
231 %
232 */
233 MagickExport DrawInfo *AcquireDrawInfo(void)
234 {
235  DrawInfo
236  *draw_info;
237 
238  draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
239  GetDrawInfo((ImageInfo *) NULL,draw_info);
240  return(draw_info);
241 }
242 ␌
243 /*
244 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
245 % %
246 % %
247 % %
248 % C l o n e D r a w I n f o %
249 % %
250 % %
251 % %
252 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
253 %
254 % CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
255 % is specified, a new DrawInfo structure is created initialized to default
256 % values.
257 %
258 % The format of the CloneDrawInfo method is:
259 %
260 % DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
261 % const DrawInfo *draw_info)
262 %
263 % A description of each parameter follows:
264 %
265 % o image_info: the image info.
266 %
267 % o draw_info: the draw info.
268 %
269 */
270 MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
271  const DrawInfo *draw_info)
272 {
273  DrawInfo
274  *clone_info;
275 
276  clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
277  GetDrawInfo(image_info,clone_info);
278  if (draw_info == (DrawInfo *) NULL)
279  return(clone_info);
280  if (draw_info->id != (char *) NULL)
281  (void) CloneString(&clone_info->id,draw_info->id);
282  if (draw_info->primitive != (char *) NULL)
283  (void) CloneString(&clone_info->primitive,draw_info->primitive);
284  if (draw_info->geometry != (char *) NULL)
285  (void) CloneString(&clone_info->geometry,draw_info->geometry);
286  clone_info->compliance=draw_info->compliance;
287  clone_info->viewbox=draw_info->viewbox;
288  clone_info->affine=draw_info->affine;
289  clone_info->gravity=draw_info->gravity;
290  clone_info->fill=draw_info->fill;
291  clone_info->stroke=draw_info->stroke;
292  clone_info->stroke_width=draw_info->stroke_width;
293  if (draw_info->fill_pattern != (Image *) NULL)
294  clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
295  &draw_info->fill_pattern->exception);
296  else
297  if (draw_info->tile != (Image *) NULL)
298  clone_info->fill_pattern=CloneImage(draw_info->tile,0,0,MagickTrue,
299  &draw_info->tile->exception);
300  clone_info->tile=NewImageList(); /* tile is deprecated */
301  if (draw_info->stroke_pattern != (Image *) NULL)
302  clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
303  MagickTrue,&draw_info->stroke_pattern->exception);
304  clone_info->stroke_antialias=draw_info->stroke_antialias;
305  clone_info->text_antialias=draw_info->text_antialias;
306  clone_info->fill_rule=draw_info->fill_rule;
307  clone_info->linecap=draw_info->linecap;
308  clone_info->linejoin=draw_info->linejoin;
309  clone_info->miterlimit=draw_info->miterlimit;
310  clone_info->dash_offset=draw_info->dash_offset;
311  clone_info->decorate=draw_info->decorate;
312  clone_info->compose=draw_info->compose;
313  if (draw_info->text != (char *) NULL)
314  (void) CloneString(&clone_info->text,draw_info->text);
315  if (draw_info->font != (char *) NULL)
316  (void) CloneString(&clone_info->font,draw_info->font);
317  if (draw_info->metrics != (char *) NULL)
318  (void) CloneString(&clone_info->metrics,draw_info->metrics);
319  if (draw_info->family != (char *) NULL)
320  (void) CloneString(&clone_info->family,draw_info->family);
321  clone_info->style=draw_info->style;
322  clone_info->stretch=draw_info->stretch;
323  clone_info->weight=draw_info->weight;
324  if (draw_info->encoding != (char *) NULL)
325  (void) CloneString(&clone_info->encoding,draw_info->encoding);
326  clone_info->pointsize=draw_info->pointsize;
327  clone_info->kerning=draw_info->kerning;
328  clone_info->interline_spacing=draw_info->interline_spacing;
329  clone_info->interword_spacing=draw_info->interword_spacing;
330  clone_info->direction=draw_info->direction;
331  if (draw_info->density != (char *) NULL)
332  (void) CloneString(&clone_info->density,draw_info->density);
333  clone_info->align=draw_info->align;
334  clone_info->undercolor=draw_info->undercolor;
335  clone_info->border_color=draw_info->border_color;
336  if (draw_info->server_name != (char *) NULL)
337  (void) CloneString(&clone_info->server_name,draw_info->server_name);
338  if (draw_info->dash_pattern != (double *) NULL)
339  {
340  ssize_t
341  x;
342 
343  for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
344  clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (2*x+2),
345  sizeof(*clone_info->dash_pattern));
346  if (clone_info->dash_pattern == (double *) NULL)
347  ThrowFatalException(ResourceLimitFatalError,
348  "UnableToAllocateDashPattern");
349  (void) memset(clone_info->dash_pattern,0,(size_t) (2*x+2)*
350  sizeof(*clone_info->dash_pattern));
351  (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
352  (x+1)*sizeof(*clone_info->dash_pattern));
353  }
354  clone_info->gradient=draw_info->gradient;
355  if (draw_info->gradient.stops != (StopInfo *) NULL)
356  {
357  size_t
358  number_stops;
359 
360  number_stops=clone_info->gradient.number_stops;
361  clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
362  number_stops,sizeof(*clone_info->gradient.stops));
363  if (clone_info->gradient.stops == (StopInfo *) NULL)
364  ThrowFatalException(ResourceLimitFatalError,
365  "UnableToAllocateDashPattern");
366  (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
367  (size_t) number_stops*sizeof(*clone_info->gradient.stops));
368  }
369  clone_info->bounds=draw_info->bounds;
370  clone_info->fill_opacity=draw_info->fill_opacity;
371  clone_info->stroke_opacity=draw_info->stroke_opacity;
372  clone_info->element_reference=draw_info->element_reference;
373  clone_info->clip_path=draw_info->clip_path;
374  clone_info->clip_units=draw_info->clip_units;
375  if (draw_info->clip_mask != (char *) NULL)
376  (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
377  if (draw_info->clipping_mask != (Image *) NULL)
378  clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
379  MagickTrue,&draw_info->clipping_mask->exception);
380  if (draw_info->composite_mask != (Image *) NULL)
381  clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
382  MagickTrue,&draw_info->composite_mask->exception);
383  clone_info->render=draw_info->render;
384  clone_info->debug=draw_info->debug;
385  return(clone_info);
386 }
387 ␌
388 /*
389 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
390 % %
391 % %
392 % %
393 + C o n v e r t P a t h T o P o l y g o n %
394 % %
395 % %
396 % %
397 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
398 %
399 % ConvertPathToPolygon() converts a path to the more efficient sorted
400 % rendering form.
401 %
402 % The format of the ConvertPathToPolygon method is:
403 %
404 % PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
405 % ExceptionInfo *exception)
406 %
407 % A description of each parameter follows:
408 %
409 % o ConvertPathToPolygon() returns the path in a more efficient sorted
410 % rendering form of type PolygonInfo.
411 %
412 % o draw_info: Specifies a pointer to an DrawInfo structure.
413 %
414 % o path_info: Specifies a pointer to an PathInfo structure.
415 %
416 % o exception: return any errors or warnings in this structure.
417 %
418 */
419 
420 static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
421 {
422  ssize_t
423  i;
424 
425  if (polygon_info->edges != (EdgeInfo *) NULL)
426  {
427  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
428  if (polygon_info->edges[i].points != (PointInfo *) NULL)
429  polygon_info->edges[i].points=(PointInfo *)
430  RelinquishMagickMemory(polygon_info->edges[i].points);
431  polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
432  polygon_info->edges);
433  }
434  return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
435 }
436 
437 #if defined(__cplusplus) || defined(c_plusplus)
438 extern "C" {
439 #endif
440 
441 static int DrawCompareEdges(const void *p_edge,const void *q_edge)
442 {
443 #define DrawCompareEdge(p,q) \
444 { \
445  if (((p)-(q)) < 0.0) \
446  return(-1); \
447  if (((p)-(q)) > 0.0) \
448  return(1); \
449 }
450 
451  const PointInfo
452  *p,
453  *q;
454 
455  /*
456  Edge sorting for right-handed coordinate system.
457  */
458  p=((const EdgeInfo *) p_edge)->points;
459  q=((const EdgeInfo *) q_edge)->points;
460  DrawCompareEdge(p[0].y,q[0].y);
461  DrawCompareEdge(p[0].x,q[0].x);
462  DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
463  (q[1].x-q[0].x));
464  DrawCompareEdge(p[1].y,q[1].y);
465  DrawCompareEdge(p[1].x,q[1].x);
466  return(0);
467 }
468 
469 #if defined(__cplusplus) || defined(c_plusplus)
470 }
471 #endif
472 
473 static void LogPolygonInfo(const PolygonInfo *polygon_info)
474 {
475  EdgeInfo
476  *p;
477 
478  ssize_t
479  i,
480  j;
481 
482  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
483  p=polygon_info->edges;
484  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
485  {
486  (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
487  (double) i);
488  (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
489  p->direction != MagickFalse ? "down" : "up");
490  (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
491  p->ghostline != MagickFalse ? "transparent" : "opaque");
492  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
493  " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
494  p->bounds.x2,p->bounds.y2);
495  for (j=0; j < (ssize_t) p->number_points; j++)
496  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
497  p->points[j].x,p->points[j].y);
498  p++;
499  }
500  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
501 }
502 
503 static void ReversePoints(PointInfo *points,const size_t number_points)
504 {
505  PointInfo
506  point;
507 
508  ssize_t
509  i;
510 
511  for (i=0; i < (ssize_t) (number_points >> 1); i++)
512  {
513  point=points[i];
514  points[i]=points[number_points-(i+1)];
515  points[number_points-(i+1)]=point;
516  }
517 }
518 
519 static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
520  ExceptionInfo *exception)
521 {
522  long
523  direction,
524  next_direction;
525 
526  PointInfo
527  point,
528  *points;
529 
531  *polygon_info;
532 
534  bounds;
535 
536  ssize_t
537  i,
538  n;
539 
540  MagickBooleanType
541  ghostline;
542 
543  size_t
544  edge,
545  number_edges,
546  number_points;
547 
548  /*
549  Convert a path to the more efficient sorted rendering form.
550  */
551  polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
552  if (polygon_info == (PolygonInfo *) NULL)
553  {
554  (void) ThrowMagickException(exception,GetMagickModule(),
555  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
556  return((PolygonInfo *) NULL);
557  }
558  number_edges=16;
559  polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
560  sizeof(*polygon_info->edges));
561  if (polygon_info->edges == (EdgeInfo *) NULL)
562  {
563  (void) ThrowMagickException(exception,GetMagickModule(),
564  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
565  return(DestroyPolygonInfo(polygon_info));
566  }
567  (void) memset(polygon_info->edges,0,number_edges*
568  sizeof(*polygon_info->edges));
569  direction=0;
570  edge=0;
571  ghostline=MagickFalse;
572  n=0;
573  number_points=0;
574  points=(PointInfo *) NULL;
575  (void) memset(&point,0,sizeof(point));
576  (void) memset(&bounds,0,sizeof(bounds));
577  polygon_info->edges[edge].number_points=(size_t) n;
578  polygon_info->edges[edge].scanline=0.0;
579  polygon_info->edges[edge].highwater=0;
580  polygon_info->edges[edge].ghostline=ghostline;
581  polygon_info->edges[edge].direction=(ssize_t) direction;
582  polygon_info->edges[edge].points=points;
583  polygon_info->edges[edge].bounds=bounds;
584  polygon_info->number_edges=0;
585  for (i=0; path_info[i].code != EndCode; i++)
586  {
587  if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
588  (path_info[i].code == GhostlineCode))
589  {
590  /*
591  Move to.
592  */
593  if ((points != (PointInfo *) NULL) && (n >= 2))
594  {
595  if (edge == number_edges)
596  {
597  number_edges<<=1;
598  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
599  polygon_info->edges,(size_t) number_edges,
600  sizeof(*polygon_info->edges));
601  if (polygon_info->edges == (EdgeInfo *) NULL)
602  {
603  (void) ThrowMagickException(exception,GetMagickModule(),
604  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
605  points=(PointInfo *) RelinquishMagickMemory(points);
606  return(DestroyPolygonInfo(polygon_info));
607  }
608  }
609  polygon_info->edges[edge].number_points=(size_t) n;
610  polygon_info->edges[edge].scanline=(-1.0);
611  polygon_info->edges[edge].highwater=0;
612  polygon_info->edges[edge].ghostline=ghostline;
613  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
614  if (direction < 0)
615  ReversePoints(points,(size_t) n);
616  polygon_info->edges[edge].points=points;
617  polygon_info->edges[edge].bounds=bounds;
618  polygon_info->edges[edge].bounds.y1=points[0].y;
619  polygon_info->edges[edge].bounds.y2=points[n-1].y;
620  points=(PointInfo *) NULL;
621  ghostline=MagickFalse;
622  edge++;
623  polygon_info->number_edges=edge;
624  }
625  if (points == (PointInfo *) NULL)
626  {
627  number_points=16;
628  points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
629  sizeof(*points));
630  if (points == (PointInfo *) NULL)
631  {
632  (void) ThrowMagickException(exception,GetMagickModule(),
633  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
634  return(DestroyPolygonInfo(polygon_info));
635  }
636  }
637  ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
638  point=path_info[i].point;
639  points[0]=point;
640  bounds.x1=point.x;
641  bounds.x2=point.x;
642  direction=0;
643  n=1;
644  continue;
645  }
646  /*
647  Line to.
648  */
649  next_direction=((path_info[i].point.y > point.y) ||
650  ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
651  (path_info[i].point.x > point.x))) ? 1 : -1;
652  if ((points != (PointInfo *) NULL) && (direction != 0) &&
653  (direction != next_direction))
654  {
655  /*
656  New edge.
657  */
658  point=points[n-1];
659  if (edge == number_edges)
660  {
661  number_edges<<=1;
662  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
663  polygon_info->edges,(size_t) number_edges,
664  sizeof(*polygon_info->edges));
665  if (polygon_info->edges == (EdgeInfo *) NULL)
666  {
667  (void) ThrowMagickException(exception,GetMagickModule(),
668  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
669  points=(PointInfo *) RelinquishMagickMemory(points);
670  return(DestroyPolygonInfo(polygon_info));
671  }
672  }
673  polygon_info->edges[edge].number_points=(size_t) n;
674  polygon_info->edges[edge].scanline=(-1.0);
675  polygon_info->edges[edge].highwater=0;
676  polygon_info->edges[edge].ghostline=ghostline;
677  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
678  if (direction < 0)
679  ReversePoints(points,(size_t) n);
680  polygon_info->edges[edge].points=points;
681  polygon_info->edges[edge].bounds=bounds;
682  polygon_info->edges[edge].bounds.y1=points[0].y;
683  polygon_info->edges[edge].bounds.y2=points[n-1].y;
684  polygon_info->number_edges=edge+1;
685  points=(PointInfo *) NULL;
686  number_points=16;
687  points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
688  sizeof(*points));
689  if (points == (PointInfo *) NULL)
690  {
691  (void) ThrowMagickException(exception,GetMagickModule(),
692  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
693  return(DestroyPolygonInfo(polygon_info));
694  }
695  n=1;
696  ghostline=MagickFalse;
697  points[0]=point;
698  bounds.x1=point.x;
699  bounds.x2=point.x;
700  edge++;
701  }
702  direction=next_direction;
703  if (points == (PointInfo *) NULL)
704  continue;
705  if (n == (ssize_t) number_points)
706  {
707  number_points<<=1;
708  points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
709  sizeof(*points));
710  if (points == (PointInfo *) NULL)
711  {
712  (void) ThrowMagickException(exception,GetMagickModule(),
713  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
714  return(DestroyPolygonInfo(polygon_info));
715  }
716  }
717  point=path_info[i].point;
718  points[n]=point;
719  if (point.x < bounds.x1)
720  bounds.x1=point.x;
721  if (point.x > bounds.x2)
722  bounds.x2=point.x;
723  n++;
724  }
725  if (points != (PointInfo *) NULL)
726  {
727  if (n < 2)
728  points=(PointInfo *) RelinquishMagickMemory(points);
729  else
730  {
731  if (edge == number_edges)
732  {
733  number_edges<<=1;
734  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
735  polygon_info->edges,(size_t) number_edges,
736  sizeof(*polygon_info->edges));
737  if (polygon_info->edges == (EdgeInfo *) NULL)
738  {
739  (void) ThrowMagickException(exception,GetMagickModule(),
740  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
741  return(DestroyPolygonInfo(polygon_info));
742  }
743  }
744  polygon_info->edges[edge].number_points=(size_t) n;
745  polygon_info->edges[edge].scanline=(-1.0);
746  polygon_info->edges[edge].highwater=0;
747  polygon_info->edges[edge].ghostline=ghostline;
748  polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
749  if (direction < 0)
750  ReversePoints(points,(size_t) n);
751  polygon_info->edges[edge].points=points;
752  polygon_info->edges[edge].bounds=bounds;
753  polygon_info->edges[edge].bounds.y1=points[0].y;
754  polygon_info->edges[edge].bounds.y2=points[n-1].y;
755  points=(PointInfo *) NULL;
756  ghostline=MagickFalse;
757  edge++;
758  polygon_info->number_edges=edge;
759  }
760  }
761  polygon_info->number_edges=edge;
762  polygon_info->number_edges=edge;
763  polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
764  polygon_info->number_edges,sizeof(*polygon_info->edges));
765  if (polygon_info->edges == (EdgeInfo *) NULL)
766  {
767  (void) ThrowMagickException(exception,GetMagickModule(),
768  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
769  return(DestroyPolygonInfo(polygon_info));
770  }
771  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
772  {
773  EdgeInfo
774  *edge_info;
775 
776  edge_info=polygon_info->edges+i;
777  edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
778  edge_info->number_points,sizeof(*edge_info->points));
779  if (edge_info->points == (PointInfo *) NULL)
780  {
781  (void) ThrowMagickException(exception,GetMagickModule(),
782  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
783  return(DestroyPolygonInfo(polygon_info));
784  }
785  }
786  qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
787  sizeof(*polygon_info->edges),DrawCompareEdges);
788  if ((GetLogEventMask() & DrawEvent) != 0)
789  LogPolygonInfo(polygon_info);
790  return(polygon_info);
791 }
792 ␌
793 /*
794 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
795 % %
796 % %
797 % %
798 + C o n v e r t P r i m i t i v e T o P a t h %
799 % %
800 % %
801 % %
802 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
803 %
804 % ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
805 % path structure.
806 %
807 % The format of the ConvertPrimitiveToPath method is:
808 %
809 % PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
810 % const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
811 %
812 % A description of each parameter follows:
813 %
814 % o ConvertPrimitiveToPath() returns a vector path structure of type
815 % PathInfo.
816 %
817 % o draw_info: a structure of type DrawInfo.
818 %
819 % o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
820 %
821 %
822 */
823 
824 static void LogPathInfo(const PathInfo *path_info)
825 {
826  const PathInfo
827  *p;
828 
829  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
830  for (p=path_info; p->code != EndCode; p++)
831  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
832  " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
833  "moveto ghostline" : p->code == OpenCode ? "moveto open" :
834  p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
835  "?");
836  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
837 }
838 
839 static PathInfo *ConvertPrimitiveToPath(
840  const DrawInfo *magick_unused(draw_info),const PrimitiveInfo *primitive_info,
841  ExceptionInfo *exception)
842 {
843  MagickBooleanType
844  closed_subpath;
845 
846  PathInfo
847  *path_info;
848 
849  PathInfoCode
850  code;
851 
852  PointInfo
853  p,
854  q;
855 
856  ssize_t
857  i,
858  n;
859 
860  ssize_t
861  coordinates,
862  start;
863 
864  magick_unreferenced(draw_info);
865 
866  /*
867  Converts a PrimitiveInfo structure into a vector path structure.
868  */
869  switch (primitive_info->primitive)
870  {
871  case PointPrimitive:
872  case ColorPrimitive:
873  case MattePrimitive:
874  case TextPrimitive:
875  case ImagePrimitive:
876  return((PathInfo *) NULL);
877  default:
878  break;
879  }
880  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
881  path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
882  sizeof(*path_info));
883  if (path_info == (PathInfo *) NULL)
884  {
885  (void) ThrowMagickException(exception,GetMagickModule(),
886  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
887  return((PathInfo *) NULL);
888  }
889  coordinates=0;
890  closed_subpath=MagickFalse;
891  n=0;
892  p.x=(-1.0);
893  p.y=(-1.0);
894  q.x=(-1.0);
895  q.y=(-1.0);
896  start=0;
897  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
898  {
899  code=LineToCode;
900  if (coordinates <= 0)
901  {
902  /*
903  New subpath.
904  */
905  coordinates=(ssize_t) primitive_info[i].coordinates;
906  p=primitive_info[i].point;
907  start=n;
908  code=MoveToCode;
909  closed_subpath=primitive_info[i].closed_subpath;
910  }
911  coordinates--;
912  if ((code == MoveToCode) || (coordinates <= 0) ||
913  (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
914  (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
915  {
916  /*
917  Eliminate duplicate points.
918  */
919  path_info[n].code=code;
920  path_info[n].point=primitive_info[i].point;
921  q=primitive_info[i].point;
922  n++;
923  }
924  if (coordinates > 0)
925  continue; /* next point in current subpath */
926  if (closed_subpath != MagickFalse)
927  {
928  closed_subpath=MagickFalse;
929  continue;
930  }
931  /*
932  Mark the p point as open if the subpath is not closed.
933  */
934  path_info[start].code=OpenCode;
935  path_info[n].code=GhostlineCode;
936  path_info[n].point=primitive_info[i].point;
937  n++;
938  path_info[n].code=LineToCode;
939  path_info[n].point=p;
940  n++;
941  }
942  path_info[n].code=EndCode;
943  path_info[n].point.x=0.0;
944  path_info[n].point.y=0.0;
945  if (IsEventLogging() != MagickFalse)
946  LogPathInfo(path_info);
947  path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
948  sizeof(*path_info));
949  return(path_info);
950 }
951 ␌
952 /*
953 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
954 % %
955 % %
956 % %
957 % D e s t r o y D r a w I n f o %
958 % %
959 % %
960 % %
961 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
962 %
963 % DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
964 %
965 % The format of the DestroyDrawInfo method is:
966 %
967 % DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
968 %
969 % A description of each parameter follows:
970 %
971 % o draw_info: the draw info.
972 %
973 */
974 MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
975 {
976  assert(draw_info != (DrawInfo *) NULL);
977  assert(draw_info->signature == MagickCoreSignature);
978  if (IsEventLogging() != MagickFalse)
979  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
980  if (draw_info->id != (char *) NULL)
981  draw_info->id=DestroyString(draw_info->id);
982  if (draw_info->primitive != (char *) NULL)
983  draw_info->primitive=DestroyString(draw_info->primitive);
984  if (draw_info->text != (char *) NULL)
985  draw_info->text=DestroyString(draw_info->text);
986  if (draw_info->geometry != (char *) NULL)
987  draw_info->geometry=DestroyString(draw_info->geometry);
988  if (draw_info->tile != (Image *) NULL)
989  draw_info->tile=DestroyImage(draw_info->tile);
990  if (draw_info->fill_pattern != (Image *) NULL)
991  draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
992  if (draw_info->stroke_pattern != (Image *) NULL)
993  draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
994  if (draw_info->font != (char *) NULL)
995  draw_info->font=DestroyString(draw_info->font);
996  if (draw_info->metrics != (char *) NULL)
997  draw_info->metrics=DestroyString(draw_info->metrics);
998  if (draw_info->family != (char *) NULL)
999  draw_info->family=DestroyString(draw_info->family);
1000  if (draw_info->encoding != (char *) NULL)
1001  draw_info->encoding=DestroyString(draw_info->encoding);
1002  if (draw_info->density != (char *) NULL)
1003  draw_info->density=DestroyString(draw_info->density);
1004  if (draw_info->server_name != (char *) NULL)
1005  draw_info->server_name=(char *)
1006  RelinquishMagickMemory(draw_info->server_name);
1007  if (draw_info->dash_pattern != (double *) NULL)
1008  draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1009  draw_info->dash_pattern);
1010  if (draw_info->gradient.stops != (StopInfo *) NULL)
1011  draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1012  draw_info->gradient.stops);
1013  if (draw_info->clip_mask != (char *) NULL)
1014  draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1015  if (draw_info->clipping_mask != (Image *) NULL)
1016  draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1017  if (draw_info->composite_mask != (Image *) NULL)
1018  draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1019  draw_info->signature=(~MagickCoreSignature);
1020  draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1021  return(draw_info);
1022 }
1023 ␌
1024 /*
1025 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1026 % %
1027 % %
1028 % %
1029 % D r a w A f f i n e I m a g e %
1030 % %
1031 % %
1032 % %
1033 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1034 %
1035 % DrawAffineImage() composites the source over the destination image as
1036 % dictated by the affine transform.
1037 %
1038 % The format of the DrawAffineImage method is:
1039 %
1040 % MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1041 % const AffineMatrix *affine)
1042 %
1043 % A description of each parameter follows:
1044 %
1045 % o image: the image.
1046 %
1047 % o source: the source image.
1048 %
1049 % o affine: the affine transform.
1050 %
1051 */
1052 
1053 static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1054  const double y,const SegmentInfo *edge)
1055 {
1056  double
1057  intercept,
1058  z;
1059 
1060  double
1061  x;
1062 
1063  SegmentInfo
1064  inverse_edge;
1065 
1066  /*
1067  Determine left and right edges.
1068  */
1069  inverse_edge.x1=edge->x1;
1070  inverse_edge.y1=edge->y1;
1071  inverse_edge.x2=edge->x2;
1072  inverse_edge.y2=edge->y2;
1073  z=affine->ry*y+affine->tx;
1074  if (affine->sx >= MagickEpsilon)
1075  {
1076  intercept=(-z/affine->sx);
1077  x=intercept;
1078  if (x > inverse_edge.x1)
1079  inverse_edge.x1=x;
1080  intercept=(-z+(double) image->columns)/affine->sx;
1081  x=intercept;
1082  if (x < inverse_edge.x2)
1083  inverse_edge.x2=x;
1084  }
1085  else
1086  if (affine->sx < -MagickEpsilon)
1087  {
1088  intercept=(-z+(double) image->columns)/affine->sx;
1089  x=intercept;
1090  if (x > inverse_edge.x1)
1091  inverse_edge.x1=x;
1092  intercept=(-z/affine->sx);
1093  x=intercept;
1094  if (x < inverse_edge.x2)
1095  inverse_edge.x2=x;
1096  }
1097  else
1098  if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1099  {
1100  inverse_edge.x2=edge->x1;
1101  return(inverse_edge);
1102  }
1103  /*
1104  Determine top and bottom edges.
1105  */
1106  z=affine->sy*y+affine->ty;
1107  if (affine->rx >= MagickEpsilon)
1108  {
1109  intercept=(-z/affine->rx);
1110  x=intercept;
1111  if (x > inverse_edge.x1)
1112  inverse_edge.x1=x;
1113  intercept=(-z+(double) image->rows)/affine->rx;
1114  x=intercept;
1115  if (x < inverse_edge.x2)
1116  inverse_edge.x2=x;
1117  }
1118  else
1119  if (affine->rx < -MagickEpsilon)
1120  {
1121  intercept=(-z+(double) image->rows)/affine->rx;
1122  x=intercept;
1123  if (x > inverse_edge.x1)
1124  inverse_edge.x1=x;
1125  intercept=(-z/affine->rx);
1126  x=intercept;
1127  if (x < inverse_edge.x2)
1128  inverse_edge.x2=x;
1129  }
1130  else
1131  if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1132  {
1133  inverse_edge.x2=edge->x2;
1134  return(inverse_edge);
1135  }
1136  return(inverse_edge);
1137 }
1138 
1139 static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1140 {
1141  AffineMatrix
1142  inverse_affine;
1143 
1144  double
1145  determinant;
1146 
1147  determinant=PerceptibleReciprocal(affine->sx*affine->sy-affine->rx*
1148  affine->ry);
1149  inverse_affine.sx=determinant*affine->sy;
1150  inverse_affine.rx=determinant*(-affine->rx);
1151  inverse_affine.ry=determinant*(-affine->ry);
1152  inverse_affine.sy=determinant*affine->sx;
1153  inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1154  inverse_affine.ry;
1155  inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1156  inverse_affine.sy;
1157  return(inverse_affine);
1158 }
1159 
1160 MagickExport MagickBooleanType DrawAffineImage(Image *image,
1161  const Image *source,const AffineMatrix *affine)
1162 {
1163  AffineMatrix
1164  inverse_affine;
1165 
1166  CacheView
1167  *image_view,
1168  *source_view;
1169 
1171  *exception;
1172 
1173  MagickBooleanType
1174  status;
1175 
1177  zero;
1178 
1179  PointInfo
1180  extent[4],
1181  min,
1182  max,
1183  point;
1184 
1185  ssize_t
1186  i;
1187 
1188  SegmentInfo
1189  edge;
1190 
1191  ssize_t
1192  start,
1193  stop,
1194  y;
1195 
1196  /*
1197  Determine bounding box.
1198  */
1199  assert(image != (Image *) NULL);
1200  assert(image->signature == MagickCoreSignature);
1201  assert(source != (const Image *) NULL);
1202  assert(source->signature == MagickCoreSignature);
1203  if (IsEventLogging() != MagickFalse)
1204  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1205  assert(affine != (AffineMatrix *) NULL);
1206  extent[0].x=0.0;
1207  extent[0].y=0.0;
1208  extent[1].x=(double) source->columns-1.0;
1209  extent[1].y=0.0;
1210  extent[2].x=(double) source->columns-1.0;
1211  extent[2].y=(double) source->rows-1.0;
1212  extent[3].x=0.0;
1213  extent[3].y=(double) source->rows-1.0;
1214  for (i=0; i < 4; i++)
1215  {
1216  point=extent[i];
1217  extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1218  extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1219  }
1220  min=extent[0];
1221  max=extent[0];
1222  for (i=1; i < 4; i++)
1223  {
1224  if (min.x > extent[i].x)
1225  min.x=extent[i].x;
1226  if (min.y > extent[i].y)
1227  min.y=extent[i].y;
1228  if (max.x < extent[i].x)
1229  max.x=extent[i].x;
1230  if (max.y < extent[i].y)
1231  max.y=extent[i].y;
1232  }
1233  /*
1234  Affine transform image.
1235  */
1236  if (SetImageStorageClass(image,DirectClass) == MagickFalse)
1237  return(MagickFalse);
1238  status=MagickTrue;
1239  edge.x1=MagickMax(min.x,0.0);
1240  edge.y1=MagickMax(min.y,0.0);
1241  edge.x2=MagickMin(max.x,(double) image->columns-1.0);
1242  edge.y2=MagickMin(max.y,(double) image->rows-1.0);
1243  inverse_affine=InverseAffineMatrix(affine);
1244  GetMagickPixelPacket(image,&zero);
1245  exception=(&image->exception);
1246  start=CastDoubleToLong(ceil(edge.y1-0.5));
1247  stop=CastDoubleToLong(floor(edge.y2+0.5));
1248  source_view=AcquireVirtualCacheView(source,exception);
1249  image_view=AcquireAuthenticCacheView(image,exception);
1250 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1251  #pragma omp parallel for schedule(static) shared(status) \
1252  magick_number_threads(source,image,stop-start,1)
1253 #endif
1254  for (y=start; y <= stop; y++)
1255  {
1257  composite,
1258  pixel;
1259 
1260  PointInfo
1261  point;
1262 
1263  IndexPacket
1264  *magick_restrict indexes;
1265 
1266  ssize_t
1267  x;
1268 
1269  PixelPacket
1270  *magick_restrict q;
1271 
1272  SegmentInfo
1273  inverse_edge;
1274 
1275  ssize_t
1276  x_offset;
1277 
1278  if (status == MagickFalse)
1279  continue;
1280  inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1281  if (inverse_edge.x2 < inverse_edge.x1)
1282  continue;
1283  q=GetCacheViewAuthenticPixels(image_view,CastDoubleToLong(
1284  ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToLong(floor(
1285  inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1286  if (q == (PixelPacket *) NULL)
1287  continue;
1288  indexes=GetCacheViewAuthenticIndexQueue(image_view);
1289  pixel=zero;
1290  composite=zero;
1291  x_offset=0;
1292  for (x=CastDoubleToLong(ceil(inverse_edge.x1-0.5));
1293  x <= CastDoubleToLong(floor(inverse_edge.x2+0.5)); x++)
1294  {
1295  point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1296  inverse_affine.tx;
1297  point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1298  inverse_affine.ty;
1299  status=InterpolateMagickPixelPacket(source,source_view,
1300  UndefinedInterpolatePixel,point.x,point.y,&pixel,exception);
1301  if (status == MagickFalse)
1302  break;
1303  SetMagickPixelPacket(image,q,indexes+x_offset,&composite);
1304  MagickPixelCompositeOver(&pixel,pixel.opacity,&composite,
1305  composite.opacity,&composite);
1306  SetPixelPacket(image,&composite,q,indexes+x_offset);
1307  x_offset++;
1308  q++;
1309  }
1310  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1311  status=MagickFalse;
1312  }
1313  source_view=DestroyCacheView(source_view);
1314  image_view=DestroyCacheView(image_view);
1315  return(status);
1316 }
1317 ␌
1318 /*
1319 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1320 % %
1321 % %
1322 % %
1323 + D r a w B o u n d i n g R e c t a n g l e s %
1324 % %
1325 % %
1326 % %
1327 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1328 %
1329 % DrawBoundingRectangles() draws the bounding rectangles on the image. This
1330 % is only useful for developers debugging the rendering algorithm.
1331 %
1332 % The format of the DrawBoundingRectangles method is:
1333 %
1334 % MagickBooleanType DrawBoundingRectangles(Image *image,
1335 % const DrawInfo *draw_info,PolygonInfo *polygon_info)
1336 %
1337 % A description of each parameter follows:
1338 %
1339 % o image: the image.
1340 %
1341 % o draw_info: the draw info.
1342 %
1343 % o polygon_info: Specifies a pointer to a PolygonInfo structure.
1344 %
1345 */
1346 
1347 static MagickBooleanType DrawBoundingRectangles(Image *image,
1348  const DrawInfo *draw_info,const PolygonInfo *polygon_info)
1349 {
1350  double
1351  mid;
1352 
1353  DrawInfo
1354  *clone_info;
1355 
1356  MagickStatusType
1357  status;
1358 
1359  PointInfo
1360  end,
1361  resolution,
1362  start;
1363 
1365  primitive_info[6];
1366 
1367  ssize_t
1368  i;
1369 
1370  SegmentInfo
1371  bounds;
1372 
1373  ssize_t
1374  coordinates;
1375 
1376  (void) memset(primitive_info,0,sizeof(primitive_info));
1377  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1378  status=QueryColorDatabase("#0000",&clone_info->fill,&image->exception);
1379  if (status == MagickFalse)
1380  {
1381  clone_info=DestroyDrawInfo(clone_info);
1382  return(MagickFalse);
1383  }
1384  resolution.x=96.0;
1385  resolution.y=96.0;
1386  if (clone_info->density != (char *) NULL)
1387  {
1388  GeometryInfo
1389  geometry_info;
1390 
1391  MagickStatusType
1392  flags;
1393 
1394  flags=ParseGeometry(clone_info->density,&geometry_info);
1395  if ((flags & RhoValue) != 0)
1396  resolution.x=geometry_info.rho;
1397  resolution.y=resolution.x;
1398  if ((flags & SigmaValue) != 0)
1399  resolution.y=geometry_info.sigma;
1400  }
1401  mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1402  clone_info->stroke_width/2.0;
1403  bounds.x1=0.0;
1404  bounds.y1=0.0;
1405  bounds.x2=0.0;
1406  bounds.y2=0.0;
1407  if (polygon_info != (PolygonInfo *) NULL)
1408  {
1409  bounds=polygon_info->edges[0].bounds;
1410  for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1411  {
1412  if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1413  bounds.x1=polygon_info->edges[i].bounds.x1;
1414  if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1415  bounds.y1=polygon_info->edges[i].bounds.y1;
1416  if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1417  bounds.x2=polygon_info->edges[i].bounds.x2;
1418  if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1419  bounds.y2=polygon_info->edges[i].bounds.y2;
1420  }
1421  bounds.x1-=mid;
1422  bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1423  image->columns ? (double) image->columns-1 : bounds.x1;
1424  bounds.y1-=mid;
1425  bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1426  image->rows ? (double) image->rows-1 : bounds.y1;
1427  bounds.x2+=mid;
1428  bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1429  image->columns ? (double) image->columns-1 : bounds.x2;
1430  bounds.y2+=mid;
1431  bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1432  image->rows ? (double) image->rows-1 : bounds.y2;
1433  for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1434  {
1435  if (polygon_info->edges[i].direction != 0)
1436  status=QueryColorDatabase("#f00",&clone_info->stroke,
1437  &image->exception);
1438  else
1439  status=QueryColorDatabase("#0f0",&clone_info->stroke,
1440  &image->exception);
1441  if (status == MagickFalse)
1442  break;
1443  start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1444  start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1445  end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1446  end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1447  primitive_info[0].primitive=RectanglePrimitive;
1448  status&=TraceRectangle(primitive_info,start,end);
1449  primitive_info[0].method=ReplaceMethod;
1450  coordinates=(ssize_t) primitive_info[0].coordinates;
1451  primitive_info[coordinates].primitive=UndefinedPrimitive;
1452  status=DrawPrimitive(image,clone_info,primitive_info);
1453  if (status == MagickFalse)
1454  break;
1455  }
1456  if (i < (ssize_t) polygon_info->number_edges)
1457  {
1458  clone_info=DestroyDrawInfo(clone_info);
1459  return(status == 0 ? MagickFalse : MagickTrue);
1460  }
1461  }
1462  status=QueryColorDatabase("#00f",&clone_info->stroke,&image->exception);
1463  if (status == MagickFalse)
1464  {
1465  clone_info=DestroyDrawInfo(clone_info);
1466  return(MagickFalse);
1467  }
1468  start.x=(double) (bounds.x1-mid);
1469  start.y=(double) (bounds.y1-mid);
1470  end.x=(double) (bounds.x2+mid);
1471  end.y=(double) (bounds.y2+mid);
1472  primitive_info[0].primitive=RectanglePrimitive;
1473  status&=TraceRectangle(primitive_info,start,end);
1474  primitive_info[0].method=ReplaceMethod;
1475  coordinates=(ssize_t) primitive_info[0].coordinates;
1476  primitive_info[coordinates].primitive=UndefinedPrimitive;
1477  status=DrawPrimitive(image,clone_info,primitive_info);
1478  clone_info=DestroyDrawInfo(clone_info);
1479  return(status == 0 ? MagickFalse : MagickTrue);
1480 }
1481 ␌
1482 /*
1483 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1484 % %
1485 % %
1486 % %
1487 % D r a w C l i p P a t h %
1488 % %
1489 % %
1490 % %
1491 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1492 %
1493 % DrawClipPath() draws the clip path on the image mask.
1494 %
1495 % The format of the DrawClipPath method is:
1496 %
1497 % MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1498 % const char *id)
1499 %
1500 % A description of each parameter follows:
1501 %
1502 % o image: the image.
1503 %
1504 % o draw_info: the draw info.
1505 %
1506 % o id: the clip path id.
1507 %
1508 */
1509 MagickExport MagickBooleanType DrawClipPath(Image *image,
1510  const DrawInfo *draw_info,const char *id)
1511 {
1512  const char
1513  *clip_path;
1514 
1515  Image
1516  *clipping_mask;
1517 
1518  MagickBooleanType
1519  status;
1520 
1521  clip_path=GetImageArtifact(image,id);
1522  if (clip_path == (const char *) NULL)
1523  return(MagickFalse);
1524  clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1525  &image->exception);
1526  if (clipping_mask == (Image *) NULL)
1527  return(MagickFalse);
1528  status=SetImageClipMask(image,clipping_mask);
1529  clipping_mask=DestroyImage(clipping_mask);
1530  return(status);
1531 }
1532 ␌
1533 /*
1534 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1535 % %
1536 % %
1537 % %
1538 % D r a w C l i p p i n g M a s k %
1539 % %
1540 % %
1541 % %
1542 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1543 %
1544 % DrawClippingMask() draws the clip path and returns it as an image clipping
1545 % mask.
1546 %
1547 % The format of the DrawClippingMask method is:
1548 %
1549 % Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1550 % const char *id,const char *clip_path,ExceptionInfo *exception)
1551 %
1552 % A description of each parameter follows:
1553 %
1554 % o image: the image.
1555 %
1556 % o draw_info: the draw info.
1557 %
1558 % o id: the clip path id.
1559 %
1560 % o clip_path: the clip path.
1561 %
1562 % o exception: return any errors or warnings in this structure.
1563 %
1564 */
1565 static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1566  const char *id,const char *clip_path,ExceptionInfo *exception)
1567 {
1568  DrawInfo
1569  *clone_info;
1570 
1571  Image
1572  *clip_mask;
1573 
1574  MagickStatusType
1575  status;
1576 
1577  /*
1578  Draw a clip path.
1579  */
1580  assert(image != (Image *) NULL);
1581  assert(image->signature == MagickCoreSignature);
1582  assert(draw_info != (const DrawInfo *) NULL);
1583  if (IsEventLogging() != MagickFalse)
1584  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1585  clip_mask=AcquireImage((const ImageInfo *) NULL);
1586  status=SetImageExtent(clip_mask,image->columns,image->rows);
1587  if (status == MagickFalse)
1588  return(DestroyImage(clip_mask));
1589  status=SetImageClipMask(image,(Image *) NULL);
1590  status=QueryColorCompliance("#0000",AllCompliance,
1591  &clip_mask->background_color,exception);
1592  clip_mask->background_color.opacity=(Quantum) TransparentOpacity;
1593  status=SetImageBackgroundColor(clip_mask);
1594  if (draw_info->debug != MagickFalse)
1595  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1596  id);
1597  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1598  (void) CloneString(&clone_info->primitive,clip_path);
1599  status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1600  exception);
1601  if (clone_info->clip_mask != (char *) NULL)
1602  clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1603  (void) QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1604  exception);
1605  clone_info->stroke_width=0.0;
1606  clone_info->opacity=OpaqueOpacity;
1607  clone_info->clip_path=MagickTrue;
1608  status=RenderMVGContent(clip_mask,clone_info,0);
1609  clone_info=DestroyDrawInfo(clone_info);
1610  status&=SeparateImageChannel(clip_mask,TrueAlphaChannel);
1611  if (draw_info->compliance != SVGCompliance)
1612  status&=NegateImage(clip_mask,MagickFalse);
1613  if (status == MagickFalse)
1614  clip_mask=DestroyImage(clip_mask);
1615  if (draw_info->debug != MagickFalse)
1616  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1617  return(clip_mask);
1618 }
1619 ␌
1620 /*
1621 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1622 % %
1623 % %
1624 % %
1625 % D r a w C o m p o s i t e M a s k %
1626 % %
1627 % %
1628 % %
1629 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1630 %
1631 % DrawCompositeMask() draws the mask path and returns it as an image mask.
1632 %
1633 % The format of the DrawCompositeMask method is:
1634 %
1635 % Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1636 % const char *id,const char *mask_path,ExceptionInfo *exception)
1637 %
1638 % A description of each parameter follows:
1639 %
1640 % o image: the image.
1641 %
1642 % o draw_info: the draw info.
1643 %
1644 % o id: the mask path id.
1645 %
1646 % o mask_path: the mask path.
1647 %
1648 % o exception: return any errors or warnings in this structure.
1649 %
1650 */
1651 static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1652  const char *id,const char *mask_path,ExceptionInfo *exception)
1653 {
1654  Image
1655  *composite_mask;
1656 
1657  DrawInfo
1658  *clone_info;
1659 
1660  MagickStatusType
1661  status;
1662 
1663  /*
1664  Draw a mask path.
1665  */
1666  assert(image != (Image *) NULL);
1667  assert(image->signature == MagickCoreSignature);
1668  assert(draw_info != (const DrawInfo *) NULL);
1669  if (IsEventLogging() != MagickFalse)
1670  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1671  composite_mask=AcquireImage((const ImageInfo *) NULL);
1672  status=SetImageExtent(composite_mask,image->columns,image->rows);
1673  if (status == MagickFalse)
1674  return(DestroyImage(composite_mask));
1675  status=SetImageMask(image,(Image *) NULL);
1676  status=QueryColorCompliance("#0000",AllCompliance,
1677  &composite_mask->background_color,exception);
1678  composite_mask->background_color.opacity=(Quantum) TransparentOpacity;
1679  (void) SetImageBackgroundColor(composite_mask);
1680  if (draw_info->debug != MagickFalse)
1681  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1682  id);
1683  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1684  (void) CloneString(&clone_info->primitive,mask_path);
1685  status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1686  exception);
1687  status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1688  exception);
1689  clone_info->stroke_width=0.0;
1690  clone_info->opacity=OpaqueOpacity;
1691  status=RenderMVGContent(composite_mask,clone_info,0);
1692  clone_info=DestroyDrawInfo(clone_info);
1693  status&=SeparateImageChannel(composite_mask,TrueAlphaChannel);
1694  status&=NegateImage(composite_mask,MagickFalse);
1695  if (status == MagickFalse)
1696  composite_mask=DestroyImage(composite_mask);
1697  if (draw_info->debug != MagickFalse)
1698  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1699  return(composite_mask);
1700 }
1701 ␌
1702 /*
1703 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1704 % %
1705 % %
1706 % %
1707 + D r a w D a s h P o l y g o n %
1708 % %
1709 % %
1710 % %
1711 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1712 %
1713 % DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1714 % image while respecting the dash offset and dash pattern attributes.
1715 %
1716 % The format of the DrawDashPolygon method is:
1717 %
1718 % MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1719 % const PrimitiveInfo *primitive_info,Image *image)
1720 %
1721 % A description of each parameter follows:
1722 %
1723 % o draw_info: the draw info.
1724 %
1725 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1726 %
1727 % o image: the image.
1728 %
1729 %
1730 */
1731 static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1732  const PrimitiveInfo *primitive_info,Image *image)
1733 {
1734  double
1735  dx,
1736  dy,
1737  length,
1738  maximum_length,
1739  offset,
1740  scale,
1741  total_length;
1742 
1743  DrawInfo
1744  *clone_info;
1745 
1746  MagickStatusType
1747  status;
1748 
1750  *dash_polygon;
1751 
1752  ssize_t
1753  i;
1754 
1755  size_t
1756  number_vertices;
1757 
1758  ssize_t
1759  j,
1760  n;
1761 
1762  assert(draw_info != (const DrawInfo *) NULL);
1763  if (draw_info->debug != MagickFalse)
1764  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1765  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1766  number_vertices=(size_t) i;
1767  dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1768  (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1769  if (dash_polygon == (PrimitiveInfo *) NULL)
1770  {
1771  (void) ThrowMagickException(&image->exception,GetMagickModule(),
1772  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1773  return(MagickFalse);
1774  }
1775  (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1776  sizeof(*dash_polygon));
1777  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1778  clone_info->miterlimit=0;
1779  dash_polygon[0]=primitive_info[0];
1780  scale=ExpandAffine(&draw_info->affine);
1781  length=scale*draw_info->dash_pattern[0];
1782  offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1783  scale*draw_info->dash_offset : 0.0;
1784  j=1;
1785  for (n=0; offset > 0.0; j=0)
1786  {
1787  if (draw_info->dash_pattern[n] <= 0.0)
1788  break;
1789  length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1790  if (offset > length)
1791  {
1792  offset-=length;
1793  n++;
1794  length=scale*draw_info->dash_pattern[n];
1795  continue;
1796  }
1797  if (offset < length)
1798  {
1799  length-=offset;
1800  offset=0.0;
1801  break;
1802  }
1803  offset=0.0;
1804  n++;
1805  }
1806  status=MagickTrue;
1807  maximum_length=0.0;
1808  total_length=0.0;
1809  for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1810  {
1811  dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1812  dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1813  maximum_length=hypot(dx,dy);
1814  if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1815  continue;
1816  if (fabs(length) < MagickEpsilon)
1817  {
1818  if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1819  n++;
1820  if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1821  n=0;
1822  length=scale*draw_info->dash_pattern[n];
1823  }
1824  for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1825  {
1826  total_length+=length;
1827  if ((n & 0x01) != 0)
1828  {
1829  dash_polygon[0]=primitive_info[0];
1830  dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1831  total_length*PerceptibleReciprocal(maximum_length));
1832  dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1833  total_length*PerceptibleReciprocal(maximum_length));
1834  j=1;
1835  }
1836  else
1837  {
1838  if ((j+1) > (ssize_t) number_vertices)
1839  break;
1840  dash_polygon[j]=primitive_info[i-1];
1841  dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1842  total_length*PerceptibleReciprocal(maximum_length));
1843  dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1844  total_length*PerceptibleReciprocal(maximum_length));
1845  dash_polygon[j].coordinates=1;
1846  j++;
1847  dash_polygon[0].coordinates=(size_t) j;
1848  dash_polygon[j].primitive=UndefinedPrimitive;
1849  status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1850  if (status == MagickFalse)
1851  break;
1852  }
1853  if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1854  n++;
1855  if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1856  n=0;
1857  length=scale*draw_info->dash_pattern[n];
1858  }
1859  length-=(maximum_length-total_length);
1860  if ((n & 0x01) != 0)
1861  continue;
1862  dash_polygon[j]=primitive_info[i];
1863  dash_polygon[j].coordinates=1;
1864  j++;
1865  }
1866  if ((status != MagickFalse) && (total_length < maximum_length) &&
1867  ((n & 0x01) == 0) && (j > 1))
1868  {
1869  dash_polygon[j]=primitive_info[i-1];
1870  dash_polygon[j].point.x+=MagickEpsilon;
1871  dash_polygon[j].point.y+=MagickEpsilon;
1872  dash_polygon[j].coordinates=1;
1873  j++;
1874  dash_polygon[0].coordinates=(size_t) j;
1875  dash_polygon[j].primitive=UndefinedPrimitive;
1876  status&=DrawStrokePolygon(image,clone_info,dash_polygon);
1877  }
1878  dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1879  clone_info=DestroyDrawInfo(clone_info);
1880  if (draw_info->debug != MagickFalse)
1881  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1882  return(status != 0 ? MagickTrue : MagickFalse);
1883 }
1884 ␌
1885 /*
1886 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1887 % %
1888 % %
1889 % %
1890 % D r a w G r a d i e n t I m a g e %
1891 % %
1892 % %
1893 % %
1894 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1895 %
1896 % DrawGradientImage() draws a linear gradient on the image.
1897 %
1898 % The format of the DrawGradientImage method is:
1899 %
1900 % MagickBooleanType DrawGradientImage(Image *image,
1901 % const DrawInfo *draw_info)
1902 %
1903 % A description of each parameter follows:
1904 %
1905 % o image: the image.
1906 %
1907 % o draw_info: the draw info.
1908 %
1909 */
1910 
1911 static inline double GetStopColorOffset(const GradientInfo *gradient,
1912  const ssize_t x,const ssize_t y)
1913 {
1914  switch (gradient->type)
1915  {
1916  case UndefinedGradient:
1917  case LinearGradient:
1918  {
1919  double
1920  gamma,
1921  length,
1922  offset,
1923  scale;
1924 
1925  PointInfo
1926  p,
1927  q;
1928 
1929  const SegmentInfo
1930  *gradient_vector;
1931 
1932  gradient_vector=(&gradient->gradient_vector);
1933  p.x=gradient_vector->x2-gradient_vector->x1;
1934  p.y=gradient_vector->y2-gradient_vector->y1;
1935  q.x=(double) x-gradient_vector->x1;
1936  q.y=(double) y-gradient_vector->y1;
1937  length=sqrt(q.x*q.x+q.y*q.y);
1938  gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1939  gamma=PerceptibleReciprocal(gamma);
1940  scale=p.x*q.x+p.y*q.y;
1941  offset=gamma*scale*length;
1942  return(offset);
1943  }
1944  case RadialGradient:
1945  {
1946  PointInfo
1947  v;
1948 
1949  if (gradient->spread == RepeatSpread)
1950  {
1951  v.x=(double) x-gradient->center.x;
1952  v.y=(double) y-gradient->center.y;
1953  return(sqrt(v.x*v.x+v.y*v.y));
1954  }
1955  v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1956  gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1957  gradient->angle))))*PerceptibleReciprocal(gradient->radii.x);
1958  v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1959  gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1960  gradient->angle))))*PerceptibleReciprocal(gradient->radii.y);
1961  return(sqrt(v.x*v.x+v.y*v.y));
1962  }
1963  }
1964  return(0.0);
1965 }
1966 
1967 MagickExport MagickBooleanType DrawGradientImage(Image *image,
1968  const DrawInfo *draw_info)
1969 {
1970  CacheView
1971  *image_view;
1972 
1973  const GradientInfo
1974  *gradient;
1975 
1976  const SegmentInfo
1977  *gradient_vector;
1978 
1979  double
1980  length;
1981 
1983  *exception;
1984 
1985  MagickBooleanType
1986  status;
1987 
1989  zero;
1990 
1991  PointInfo
1992  point;
1993 
1995  bounding_box;
1996 
1997  ssize_t
1998  y;
1999 
2000  /*
2001  Draw linear or radial gradient on image.
2002  */
2003  assert(image != (Image *) NULL);
2004  assert(image->signature == MagickCoreSignature);
2005  assert(draw_info != (const DrawInfo *) NULL);
2006  if (IsEventLogging() != MagickFalse)
2007  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2008  gradient=(&draw_info->gradient);
2009  gradient_vector=(&gradient->gradient_vector);
2010  point.x=gradient_vector->x2-gradient_vector->x1;
2011  point.y=gradient_vector->y2-gradient_vector->y1;
2012  length=sqrt(point.x*point.x+point.y*point.y);
2013  bounding_box=gradient->bounding_box;
2014  status=MagickTrue;
2015  exception=(&image->exception);
2016  GetMagickPixelPacket(image,&zero);
2017  image_view=AcquireAuthenticCacheView(image,exception);
2018 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2019  #pragma omp parallel for schedule(static) shared(status) \
2020  magick_number_threads(image,image,bounding_box.height-bounding_box.y,1)
2021 #endif
2022  for (y=bounding_box.y; y < (ssize_t) bounding_box.height; y++)
2023  {
2024  double
2025  alpha,
2026  offset;
2027 
2029  composite,
2030  pixel;
2031 
2032  IndexPacket
2033  *magick_restrict indexes;
2034 
2035  ssize_t
2036  i,
2037  x;
2038 
2039  PixelPacket
2040  *magick_restrict q;
2041 
2042  ssize_t
2043  j;
2044 
2045  if (status == MagickFalse)
2046  continue;
2047  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2048  if (q == (PixelPacket *) NULL)
2049  {
2050  status=MagickFalse;
2051  continue;
2052  }
2053  indexes=GetCacheViewAuthenticIndexQueue(image_view);
2054  pixel=zero;
2055  composite=zero;
2056  offset=GetStopColorOffset(gradient,0,y);
2057  if (gradient->type != RadialGradient)
2058  offset*=PerceptibleReciprocal(length);
2059  for (x=bounding_box.x; x < (ssize_t) bounding_box.width; x++)
2060  {
2061  SetMagickPixelPacket(image,q,indexes+x,&pixel);
2062  switch (gradient->spread)
2063  {
2064  case UndefinedSpread:
2065  case PadSpread:
2066  {
2067  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2068  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2069  {
2070  offset=GetStopColorOffset(gradient,x,y);
2071  if (gradient->type != RadialGradient)
2072  offset*=PerceptibleReciprocal(length);
2073  }
2074  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2075  if (offset < gradient->stops[i].offset)
2076  break;
2077  if ((offset < 0.0) || (i == 0))
2078  composite=gradient->stops[0].color;
2079  else
2080  if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2081  composite=gradient->stops[gradient->number_stops-1].color;
2082  else
2083  {
2084  j=i;
2085  i--;
2086  alpha=(offset-gradient->stops[i].offset)/
2087  (gradient->stops[j].offset-gradient->stops[i].offset);
2088  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2089  &gradient->stops[j].color,alpha,&composite);
2090  }
2091  break;
2092  }
2093  case ReflectSpread:
2094  {
2095  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2096  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2097  {
2098  offset=GetStopColorOffset(gradient,x,y);
2099  if (gradient->type != RadialGradient)
2100  offset*=PerceptibleReciprocal(length);
2101  }
2102  if (offset < 0.0)
2103  offset=(-offset);
2104  if ((ssize_t) fmod(offset,2.0) == 0)
2105  offset=fmod(offset,1.0);
2106  else
2107  offset=1.0-fmod(offset,1.0);
2108  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2109  if (offset < gradient->stops[i].offset)
2110  break;
2111  if (i == 0)
2112  composite=gradient->stops[0].color;
2113  else
2114  if (i == (ssize_t) gradient->number_stops)
2115  composite=gradient->stops[gradient->number_stops-1].color;
2116  else
2117  {
2118  j=i;
2119  i--;
2120  alpha=(offset-gradient->stops[i].offset)/
2121  (gradient->stops[j].offset-gradient->stops[i].offset);
2122  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2123  &gradient->stops[j].color,alpha,&composite);
2124  }
2125  break;
2126  }
2127  case RepeatSpread:
2128  {
2129  double
2130  repeat;
2131 
2132  MagickBooleanType
2133  antialias;
2134 
2135  antialias=MagickFalse;
2136  repeat=0.0;
2137  if ((x != CastDoubleToLong(ceil(gradient_vector->x1-0.5))) ||
2138  (y != CastDoubleToLong(ceil(gradient_vector->y1-0.5))))
2139  {
2140  offset=GetStopColorOffset(gradient,x,y);
2141  if (gradient->type == LinearGradient)
2142  {
2143  repeat=fmod(offset,length);
2144  if (repeat < 0.0)
2145  repeat=length-fmod(-repeat,length);
2146  else
2147  repeat=fmod(offset,length);
2148  antialias=(repeat < length) && ((repeat+1.0) > length) ?
2149  MagickTrue : MagickFalse;
2150  offset=PerceptibleReciprocal(length)*repeat;
2151  }
2152  else
2153  {
2154  repeat=fmod(offset,(double) gradient->radius);
2155  if (repeat < 0.0)
2156  repeat=gradient->radius-fmod(-repeat,
2157  (double) gradient->radius);
2158  else
2159  repeat=fmod(offset,(double) gradient->radius);
2160  antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2161  MagickFalse;
2162  offset=repeat*PerceptibleReciprocal(gradient->radius);
2163  }
2164  }
2165  for (i=0; i < (ssize_t) gradient->number_stops; i++)
2166  if (offset < gradient->stops[i].offset)
2167  break;
2168  if (i == 0)
2169  composite=gradient->stops[0].color;
2170  else
2171  if (i == (ssize_t) gradient->number_stops)
2172  composite=gradient->stops[gradient->number_stops-1].color;
2173  else
2174  {
2175  j=i;
2176  i--;
2177  alpha=(offset-gradient->stops[i].offset)/
2178  (gradient->stops[j].offset-gradient->stops[i].offset);
2179  if (antialias != MagickFalse)
2180  {
2181  if (gradient->type == LinearGradient)
2182  alpha=length-repeat;
2183  else
2184  alpha=gradient->radius-repeat;
2185  i=0;
2186  j=(ssize_t) gradient->number_stops-1L;
2187  }
2188  MagickPixelCompositeBlend(&gradient->stops[i].color,1.0-alpha,
2189  &gradient->stops[j].color,alpha,&composite);
2190  }
2191  break;
2192  }
2193  }
2194  MagickPixelCompositeOver(&composite,composite.opacity,&pixel,
2195  pixel.opacity,&pixel);
2196  SetPixelPacket(image,&pixel,q,indexes+x);
2197  q++;
2198  }
2199  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2200  status=MagickFalse;
2201  }
2202  image_view=DestroyCacheView(image_view);
2203  return(status);
2204 }
2205 ␌
2206 /*
2207 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2208 % %
2209 % %
2210 % %
2211 % D r a w I m a g e %
2212 % %
2213 % %
2214 % %
2215 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2216 %
2217 % DrawImage() draws a graphic primitive on your image. The primitive
2218 % may be represented as a string or filename. Precede the filename with an
2219 % "at" sign (@) and the contents of the file are drawn on the image. You
2220 % can affect how text is drawn by setting one or more members of the draw
2221 % info structure.
2222 %
2223 % The format of the DrawImage method is:
2224 %
2225 % MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
2226 %
2227 % A description of each parameter follows:
2228 %
2229 % o image: the image.
2230 %
2231 % o draw_info: the draw info.
2232 %
2233 */
2234 
2235 static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2236  const double pad)
2237 {
2238  char
2239  **text = (char **) NULL;
2240 
2241  double
2242  extent;
2243 
2244  size_t
2245  quantum;
2246 
2247  ssize_t
2248  i;
2249 
2250  /*
2251  Check if there is enough storage for drawing primitives.
2252  */
2253  quantum=sizeof(**mvg_info->primitive_info);
2254  extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*quantum;
2255  if (extent <= (double) *mvg_info->extent)
2256  return(MagickTrue);
2257  if ((extent >= (double) MAGICK_SSIZE_MAX) || (IsNaN(extent) != 0))
2258  return(MagickFalse);
2259  if (mvg_info->offset > 0)
2260  {
2261  text=(char **) AcquireQuantumMemory(mvg_info->offset,sizeof(*text));
2262  if (text == (char **) NULL)
2263  return(MagickFalse);
2264  for (i=0; i < mvg_info->offset; i++)
2265  text[i]=(*mvg_info->primitive_info)[i].text;
2266  }
2267  *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2268  *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2269  if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2270  {
2271  if (text != (char **) NULL)
2272  text=(char **) RelinquishMagickMemory(text);
2273  *mvg_info->extent=(size_t) extent;
2274  for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2275  {
2276  (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2277  (*mvg_info->primitive_info)[i].text=(char *) NULL;
2278  }
2279  return(MagickTrue);
2280  }
2281  /*
2282  Reallocation failed, allocate a primitive to facilitate unwinding.
2283  */
2284  if (text != (char **) NULL)
2285  {
2286  for (i=0; i < mvg_info->offset; i++)
2287  if (text[i] != (char *) NULL)
2288  text[i]=DestroyString(text[i]);
2289  text=(char **) RelinquishMagickMemory(text);
2290  }
2291  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2292  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2293  *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2294  (PrimitiveExtentPad+1)*quantum);
2295  (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2296  quantum));
2297  *mvg_info->extent=1;
2298  mvg_info->offset=0;
2299  return(MagickFalse);
2300 }
2301 
2302 static inline double GetDrawValue(const char *magick_restrict string,
2303  char **magick_restrict sentinal)
2304 {
2305  char
2306  **magick_restrict q;
2307 
2308  double
2309  value;
2310 
2311  q=sentinal;
2312  value=InterpretLocaleValue(string,q);
2313  sentinal=q;
2314  return(value);
2315 }
2316 
2317 static int MVGMacroCompare(const void *target,const void *source)
2318 {
2319  const char
2320  *p,
2321  *q;
2322 
2323  p=(const char *) target;
2324  q=(const char *) source;
2325  return(strcmp(p,q));
2326 }
2327 
2328 static SplayTreeInfo *GetMVGMacros(const char *primitive)
2329 {
2330  char
2331  *macro,
2332  *token;
2333 
2334  const char
2335  *q;
2336 
2337  size_t
2338  extent;
2339 
2341  *macros;
2342 
2343  /*
2344  Scan graphic primitives for definitions and classes.
2345  */
2346  if (primitive == (const char *) NULL)
2347  return((SplayTreeInfo *) NULL);
2348  macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2349  RelinquishMagickMemory);
2350  macro=AcquireString(primitive);
2351  token=AcquireString(primitive);
2352  extent=strlen(token)+MagickPathExtent;
2353  for (q=primitive; *q != '\0'; )
2354  {
2355  if (GetNextToken(q,&q,extent,token) < 1)
2356  break;
2357  if (*token == '\0')
2358  break;
2359  if (LocaleCompare("push",token) == 0)
2360  {
2361  const char
2362  *end,
2363  *start;
2364 
2365  (void) GetNextToken(q,&q,extent,token);
2366  if (*q == '"')
2367  {
2368  char
2369  name[MagickPathExtent];
2370 
2371  const char
2372  *p;
2373 
2374  ssize_t
2375  n;
2376 
2377  /*
2378  Named macro (e.g. push graphic-context "wheel").
2379  */
2380  (void) GetNextToken(q,&q,extent,token);
2381  start=q;
2382  end=q;
2383  (void) CopyMagickString(name,token,MagickPathExtent);
2384  n=1;
2385  for (p=q; *p != '\0'; )
2386  {
2387  if (GetNextToken(p,&p,extent,token) < 1)
2388  break;
2389  if (*token == '\0')
2390  break;
2391  if (LocaleCompare(token,"pop") == 0)
2392  {
2393  end=p-strlen(token)-1;
2394  n--;
2395  }
2396  if (LocaleCompare(token,"push") == 0)
2397  n++;
2398  if ((n == 0) && (end > start))
2399  {
2400  /*
2401  Extract macro.
2402  */
2403  (void) GetNextToken(p,&p,extent,token);
2404  (void) CopyMagickString(macro,start,(size_t) (end-start));
2405  (void) AddValueToSplayTree(macros,ConstantString(name),
2406  ConstantString(macro));
2407  break;
2408  }
2409  }
2410  }
2411  }
2412  }
2413  token=DestroyString(token);
2414  macro=DestroyString(macro);
2415  return(macros);
2416 }
2417 
2418 static inline MagickBooleanType IsPoint(const char *point)
2419 {
2420  char
2421  *p;
2422 
2423  double
2424  value;
2425 
2426  value=GetDrawValue(point,&p);
2427  return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2428  MagickTrue);
2429 }
2430 
2431 static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2432  const PointInfo point)
2433 {
2434  primitive_info->coordinates=1;
2435  primitive_info->closed_subpath=MagickFalse;
2436  primitive_info->point=point;
2437  return(MagickTrue);
2438 }
2439 
2440 static MagickBooleanType RenderMVGContent(Image *image,
2441  const DrawInfo *draw_info,const size_t depth)
2442 {
2443 #define RenderImageTag "Render/Image"
2444 
2445  AffineMatrix
2446  affine,
2447  current;
2448 
2449  char
2450  key[2*MaxTextExtent],
2451  keyword[MaxTextExtent],
2452  geometry[MaxTextExtent],
2453  name[MaxTextExtent],
2454  *next_token,
2455  pattern[MaxTextExtent],
2456  *primitive,
2457  *token;
2458 
2459  const char
2460  *q;
2461 
2462  double
2463  angle,
2464  coordinates,
2465  cursor,
2466  factor,
2467  primitive_extent;
2468 
2469  DrawInfo
2470  *clone_info,
2471  **graphic_context;
2472 
2473  MagickBooleanType
2474  proceed;
2475 
2476  MagickStatusType
2477  status;
2478 
2479  MVGInfo
2480  mvg_info;
2481 
2482  PointInfo
2483  point;
2484 
2485  PixelPacket
2486  start_color;
2487 
2489  *primitive_info;
2490 
2491  PrimitiveType
2492  primitive_type;
2493 
2494  const char
2495  *p;
2496 
2497  ssize_t
2498  i,
2499  x;
2500 
2501  SegmentInfo
2502  bounds;
2503 
2504  size_t
2505  extent,
2506  number_points;
2507 
2509  *macros;
2510 
2511  ssize_t
2512  defsDepth,
2513  j,
2514  k,
2515  n,
2516  symbolDepth;
2517 
2518  TypeMetric
2519  metrics;
2520 
2521  assert(image != (Image *) NULL);
2522  assert(image->signature == MagickCoreSignature);
2523  assert(draw_info != (DrawInfo *) NULL);
2524  assert(draw_info->signature == MagickCoreSignature);
2525  if (IsEventLogging() != MagickFalse)
2526  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2527  if (depth > MagickMaxRecursionDepth)
2528  ThrowBinaryImageException(DrawError,"VectorGraphicsNestedTooDeeply",
2529  image->filename);
2530  if ((draw_info->primitive == (char *) NULL) ||
2531  (*draw_info->primitive == '\0'))
2532  return(MagickFalse);
2533  if (draw_info->debug != MagickFalse)
2534  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2535  if (SetImageStorageClass(image,DirectClass) == MagickFalse)
2536  return(MagickFalse);
2537  if (image->matte == MagickFalse)
2538  {
2539  status=SetImageAlphaChannel(image,OpaqueAlphaChannel);
2540  if (status == MagickFalse)
2541  return(MagickFalse);
2542  }
2543  primitive=(char *) NULL;
2544  if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2545  (*(draw_info->primitive+1) != '-') && (depth == 0))
2546  primitive=FileToString(draw_info->primitive+1,~0UL,&image->exception);
2547  else
2548  primitive=AcquireString(draw_info->primitive);
2549  if (primitive == (char *) NULL)
2550  return(MagickFalse);
2551  primitive_extent=(double) strlen(primitive);
2552  (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2553  n=0;
2554  /*
2555  Allocate primitive info memory.
2556  */
2557  graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2558  if (graphic_context == (DrawInfo **) NULL)
2559  {
2560  primitive=DestroyString(primitive);
2561  ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2562  image->filename);
2563  }
2564  number_points=(size_t) PrimitiveExtentPad;
2565  primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2566  (number_points+1),sizeof(*primitive_info));
2567  if (primitive_info == (PrimitiveInfo *) NULL)
2568  {
2569  primitive=DestroyString(primitive);
2570  for ( ; n >= 0; n--)
2571  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2572  graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2573  ThrowBinaryImageException(ResourceLimitError,"MemoryAllocationFailed",
2574  image->filename);
2575  }
2576  (void) memset(primitive_info,0,(size_t) (number_points+1)*
2577  sizeof(*primitive_info));
2578  (void) memset(&mvg_info,0,sizeof(mvg_info));
2579  mvg_info.primitive_info=(&primitive_info);
2580  mvg_info.extent=(&number_points);
2581  mvg_info.exception=(&image->exception);
2582  graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2583  graphic_context[n]->viewbox=image->page;
2584  if ((image->page.width == 0) || (image->page.height == 0))
2585  {
2586  graphic_context[n]->viewbox.width=image->columns;
2587  graphic_context[n]->viewbox.height=image->rows;
2588  }
2589  token=AcquireString(primitive);
2590  extent=strlen(token)+MaxTextExtent;
2591  cursor=0.0;
2592  defsDepth=0;
2593  symbolDepth=0;
2594  macros=GetMVGMacros(primitive);
2595  status=QueryColorDatabase("#000000",&start_color,&image->exception);
2596  for (q=primitive; *q != '\0'; )
2597  {
2598  /*
2599  Interpret graphic primitive.
2600  */
2601  if (GetNextToken(q,&q,MaxTextExtent,keyword) < 1)
2602  break;
2603  if (*keyword == '\0')
2604  break;
2605  if (*keyword == '#')
2606  {
2607  /*
2608  Comment.
2609  */
2610  while ((*q != '\n') && (*q != '\0'))
2611  q++;
2612  continue;
2613  }
2614  p=q-strlen(keyword)-1;
2615  primitive_type=UndefinedPrimitive;
2616  current=graphic_context[n]->affine;
2617  GetAffineMatrix(&affine);
2618  *token='\0';
2619  switch (*keyword)
2620  {
2621  case ';':
2622  break;
2623  case 'a':
2624  case 'A':
2625  {
2626  if (LocaleCompare("affine",keyword) == 0)
2627  {
2628  (void) GetNextToken(q,&q,extent,token);
2629  affine.sx=GetDrawValue(token,&next_token);
2630  if (token == next_token)
2631  ThrowPointExpectedException(image,token);
2632  (void) GetNextToken(q,&q,extent,token);
2633  if (*token == ',')
2634  (void) GetNextToken(q,&q,extent,token);
2635  affine.rx=GetDrawValue(token,&next_token);
2636  if (token == next_token)
2637  ThrowPointExpectedException(image,token);
2638  (void) GetNextToken(q,&q,extent,token);
2639  if (*token == ',')
2640  (void) GetNextToken(q,&q,extent,token);
2641  affine.ry=GetDrawValue(token,&next_token);
2642  if (token == next_token)
2643  ThrowPointExpectedException(image,token);
2644  (void) GetNextToken(q,&q,extent,token);
2645  if (*token == ',')
2646  (void) GetNextToken(q,&q,extent,token);
2647  affine.sy=GetDrawValue(token,&next_token);
2648  if (token == next_token)
2649  ThrowPointExpectedException(image,token);
2650  (void) GetNextToken(q,&q,extent,token);
2651  if (*token == ',')
2652  (void) GetNextToken(q,&q,extent,token);
2653  affine.tx=GetDrawValue(token,&next_token);
2654  if (token == next_token)
2655  ThrowPointExpectedException(image,token);
2656  (void) GetNextToken(q,&q,extent,token);
2657  if (*token == ',')
2658  (void) GetNextToken(q,&q,extent,token);
2659  affine.ty=GetDrawValue(token,&next_token);
2660  if (token == next_token)
2661  ThrowPointExpectedException(image,token);
2662  break;
2663  }
2664  if (LocaleCompare("arc",keyword) == 0)
2665  {
2666  primitive_type=ArcPrimitive;
2667  break;
2668  }
2669  status=MagickFalse;
2670  break;
2671  }
2672  case 'b':
2673  case 'B':
2674  {
2675  if (LocaleCompare("bezier",keyword) == 0)
2676  {
2677  primitive_type=BezierPrimitive;
2678  break;
2679  }
2680  if (LocaleCompare("border-color",keyword) == 0)
2681  {
2682  (void) GetNextToken(q,&q,extent,token);
2683  status&=QueryColorDatabase(token,&graphic_context[n]->border_color,
2684  &image->exception);
2685  break;
2686  }
2687  status=MagickFalse;
2688  break;
2689  }
2690  case 'c':
2691  case 'C':
2692  {
2693  if (LocaleCompare("class",keyword) == 0)
2694  {
2695  const char
2696  *mvg_class;
2697 
2698  (void) GetNextToken(q,&q,extent,token);
2699  if (*token == '\0')
2700  {
2701  status=MagickFalse;
2702  break;
2703  }
2704  if (LocaleCompare(token,graphic_context[n]->id) == 0)
2705  break;
2706  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2707  if ((graphic_context[n]->render != MagickFalse) &&
2708  (mvg_class != (const char *) NULL) && (p > primitive))
2709  {
2710  char
2711  *elements;
2712 
2713  ssize_t
2714  offset;
2715 
2716  /*
2717  Inject class elements in stream.
2718  */
2719  offset=(ssize_t) (p-primitive);
2720  elements=AcquireString(primitive);
2721  elements[offset]='\0';
2722  (void) ConcatenateString(&elements,mvg_class);
2723  (void) ConcatenateString(&elements,"\n");
2724  (void) ConcatenateString(&elements,q);
2725  primitive=DestroyString(primitive);
2726  primitive=elements;
2727  q=primitive+offset;
2728  }
2729  break;
2730  }
2731  if (LocaleCompare("clip-path",keyword) == 0)
2732  {
2733  const char
2734  *clip_path;
2735 
2736  /*
2737  Take a node from within the MVG document, and duplicate it here.
2738  */
2739  (void) GetNextToken(q,&q,extent,token);
2740  if (*token == '\0')
2741  {
2742  status=MagickFalse;
2743  break;
2744  }
2745  (void) CloneString(&graphic_context[n]->clip_mask,token);
2746  clip_path=(const char *) GetValueFromSplayTree(macros,token);
2747  if (clip_path != (const char *) NULL)
2748  {
2749  if (graphic_context[n]->clipping_mask != (Image *) NULL)
2750  graphic_context[n]->clipping_mask=
2751  DestroyImage(graphic_context[n]->clipping_mask);
2752  graphic_context[n]->clipping_mask=DrawClippingMask(image,
2753  graphic_context[n],token,clip_path,&image->exception);
2754  if (graphic_context[n]->compliance != SVGCompliance)
2755  {
2756  const char
2757  *clip_path;
2758 
2759  clip_path=(const char *) GetValueFromSplayTree(macros,
2760  graphic_context[n]->clip_mask);
2761  if (clip_path != (const char *) NULL)
2762  (void) SetImageArtifact(image,
2763  graphic_context[n]->clip_mask,clip_path);
2764  status&=DrawClipPath(image,graphic_context[n],
2765  graphic_context[n]->clip_mask);
2766  }
2767  }
2768  break;
2769  }
2770  if (LocaleCompare("clip-rule",keyword) == 0)
2771  {
2772  ssize_t
2773  fill_rule;
2774 
2775  (void) GetNextToken(q,&q,extent,token);
2776  fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2777  token);
2778  if (fill_rule == -1)
2779  {
2780  status=MagickFalse;
2781  break;
2782  }
2783  graphic_context[n]->fill_rule=(FillRule) fill_rule;
2784  break;
2785  }
2786  if (LocaleCompare("clip-units",keyword) == 0)
2787  {
2788  ssize_t
2789  clip_units;
2790 
2791  (void) GetNextToken(q,&q,extent,token);
2792  clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2793  token);
2794  if (clip_units == -1)
2795  {
2796  status=MagickFalse;
2797  break;
2798  }
2799  graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2800  if (clip_units == ObjectBoundingBox)
2801  {
2802  GetAffineMatrix(&current);
2803  affine.sx=draw_info->bounds.x2;
2804  affine.sy=draw_info->bounds.y2;
2805  affine.tx=draw_info->bounds.x1;
2806  affine.ty=draw_info->bounds.y1;
2807  break;
2808  }
2809  break;
2810  }
2811  if (LocaleCompare("circle",keyword) == 0)
2812  {
2813  primitive_type=CirclePrimitive;
2814  break;
2815  }
2816  if (LocaleCompare("color",keyword) == 0)
2817  {
2818  primitive_type=ColorPrimitive;
2819  break;
2820  }
2821  if (LocaleCompare("compliance",keyword) == 0)
2822  {
2823  /*
2824  MVG compliance associates a clipping mask with an image; SVG
2825  compliance associates a clipping mask with a graphics context.
2826  */
2827  (void) GetNextToken(q,&q,extent,token);
2828  graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2829  MagickComplianceOptions,MagickFalse,token);
2830  break;
2831  }
2832  if (LocaleCompare("currentColor",keyword) == 0)
2833  {
2834  (void) GetNextToken(q,&q,extent,token);
2835  break;
2836  }
2837  status=MagickFalse;
2838  break;
2839  }
2840  case 'd':
2841  case 'D':
2842  {
2843  if (LocaleCompare("decorate",keyword) == 0)
2844  {
2845  ssize_t
2846  decorate;
2847 
2848  (void) GetNextToken(q,&q,extent,token);
2849  decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2850  token);
2851  if (decorate == -1)
2852  {
2853  status=MagickFalse;
2854  break;
2855  }
2856  graphic_context[n]->decorate=(DecorationType) decorate;
2857  break;
2858  }
2859  if (LocaleCompare("density",keyword) == 0)
2860  {
2861  (void) GetNextToken(q,&q,extent,token);
2862  (void) CloneString(&graphic_context[n]->density,token);
2863  break;
2864  }
2865  if (LocaleCompare("direction",keyword) == 0)
2866  {
2867  ssize_t
2868  direction;
2869 
2870  (void) GetNextToken(q,&q,extent,token);
2871  direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2872  token);
2873  if (direction == -1)
2874  status=MagickFalse;
2875  else
2876  graphic_context[n]->direction=(DirectionType) direction;
2877  break;
2878  }
2879  status=MagickFalse;
2880  break;
2881  }
2882  case 'e':
2883  case 'E':
2884  {
2885  if (LocaleCompare("ellipse",keyword) == 0)
2886  {
2887  primitive_type=EllipsePrimitive;
2888  break;
2889  }
2890  if (LocaleCompare("encoding",keyword) == 0)
2891  {
2892  (void) GetNextToken(q,&q,extent,token);
2893  (void) CloneString(&graphic_context[n]->encoding,token);
2894  break;
2895  }
2896  status=MagickFalse;
2897  break;
2898  }
2899  case 'f':
2900  case 'F':
2901  {
2902  if (LocaleCompare("fill",keyword) == 0)
2903  {
2904  const char
2905  *mvg_class;
2906 
2907  (void) GetNextToken(q,&q,extent,token);
2908  if (graphic_context[n]->clip_path != MagickFalse)
2909  break;
2910  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2911  if (mvg_class != (const char *) NULL)
2912  {
2913  (void) DrawPatternPath(image,draw_info,mvg_class,
2914  &graphic_context[n]->fill_pattern);
2915  break;
2916  }
2917  (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
2918  if (GetImageArtifact(image,pattern) != (const char *) NULL)
2919  {
2920  (void) DrawPatternPath(image,draw_info,token,
2921  &graphic_context[n]->fill_pattern);
2922  break;
2923  }
2924  status&=QueryColorDatabase(token,&graphic_context[n]->fill,
2925  &image->exception);
2926  if (graphic_context[n]->fill_opacity != OpaqueOpacity)
2927  graphic_context[n]->fill.opacity=ClampToQuantum(
2928  graphic_context[n]->fill_opacity);
2929  break;
2930  }
2931  if (LocaleCompare("fill-opacity",keyword) == 0)
2932  {
2933  double
2934  opacity;
2935 
2936  (void) GetNextToken(q,&q,extent,token);
2937  if (graphic_context[n]->clip_path != MagickFalse)
2938  break;
2939  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2940  opacity=MagickMin(MagickMax(factor*
2941  GetDrawValue(token,&next_token),0.0),1.0);
2942  if (token == next_token)
2943  ThrowPointExpectedException(image,token);
2944  if (graphic_context[n]->compliance == SVGCompliance)
2945  graphic_context[n]->fill_opacity*=(1.0-opacity);
2946  else
2947  graphic_context[n]->fill_opacity=(QuantumRange-
2948  graphic_context[n]->fill_opacity)*(1.0-opacity);
2949  if (graphic_context[n]->fill.opacity != TransparentOpacity)
2950  graphic_context[n]->fill.opacity=(Quantum)
2951  graphic_context[n]->fill_opacity;
2952  else
2953  graphic_context[n]->fill.opacity=ClampToQuantum(QuantumRange*
2954  (1.0-opacity));
2955  break;
2956  }
2957  if (LocaleCompare("fill-rule",keyword) == 0)
2958  {
2959  ssize_t
2960  fill_rule;
2961 
2962  (void) GetNextToken(q,&q,extent,token);
2963  fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2964  token);
2965  if (fill_rule == -1)
2966  {
2967  status=MagickFalse;
2968  break;
2969  }
2970  graphic_context[n]->fill_rule=(FillRule) fill_rule;
2971  break;
2972  }
2973  if (LocaleCompare("font",keyword) == 0)
2974  {
2975  (void) GetNextToken(q,&q,extent,token);
2976  (void) CloneString(&graphic_context[n]->font,token);
2977  if (LocaleCompare("none",token) == 0)
2978  graphic_context[n]->font=(char *) RelinquishMagickMemory(
2979  graphic_context[n]->font);
2980  break;
2981  }
2982  if (LocaleCompare("font-family",keyword) == 0)
2983  {
2984  (void) GetNextToken(q,&q,extent,token);
2985  (void) CloneString(&graphic_context[n]->family,token);
2986  break;
2987  }
2988  if (LocaleCompare("font-size",keyword) == 0)
2989  {
2990  (void) GetNextToken(q,&q,extent,token);
2991  graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
2992  if (token == next_token)
2993  ThrowPointExpectedException(image,token);
2994  break;
2995  }
2996  if (LocaleCompare("font-stretch",keyword) == 0)
2997  {
2998  ssize_t
2999  stretch;
3000 
3001  (void) GetNextToken(q,&q,extent,token);
3002  stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3003  if (stretch == -1)
3004  {
3005  status=MagickFalse;
3006  break;
3007  }
3008  graphic_context[n]->stretch=(StretchType) stretch;
3009  break;
3010  }
3011  if (LocaleCompare("font-style",keyword) == 0)
3012  {
3013  ssize_t
3014  style;
3015 
3016  (void) GetNextToken(q,&q,extent,token);
3017  style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3018  if (style == -1)
3019  {
3020  status=MagickFalse;
3021  break;
3022  }
3023  graphic_context[n]->style=(StyleType) style;
3024  break;
3025  }
3026  if (LocaleCompare("font-weight",keyword) == 0)
3027  {
3028  ssize_t
3029  weight;
3030 
3031  (void) GetNextToken(q,&q,extent,token);
3032  weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3033  if (weight == -1)
3034  weight=(ssize_t) StringToUnsignedLong(token);
3035  graphic_context[n]->weight=(size_t) weight;
3036  break;
3037  }
3038  status=MagickFalse;
3039  break;
3040  }
3041  case 'g':
3042  case 'G':
3043  {
3044  if (LocaleCompare("gradient-units",keyword) == 0)
3045  {
3046  (void) GetNextToken(q,&q,extent,token);
3047  break;
3048  }
3049  if (LocaleCompare("gravity",keyword) == 0)
3050  {
3051  ssize_t
3052  gravity;
3053 
3054  (void) GetNextToken(q,&q,extent,token);
3055  gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3056  if (gravity == -1)
3057  {
3058  status=MagickFalse;
3059  break;
3060  }
3061  graphic_context[n]->gravity=(GravityType) gravity;
3062  break;
3063  }
3064  status=MagickFalse;
3065  break;
3066  }
3067  case 'i':
3068  case 'I':
3069  {
3070  if (LocaleCompare("image",keyword) == 0)
3071  {
3072  ssize_t
3073  compose;
3074 
3075  primitive_type=ImagePrimitive;
3076  (void) GetNextToken(q,&q,extent,token);
3077  compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3078  if (compose == -1)
3079  {
3080  status=MagickFalse;
3081  break;
3082  }
3083  graphic_context[n]->compose=(CompositeOperator) compose;
3084  break;
3085  }
3086  if (LocaleCompare("interline-spacing",keyword) == 0)
3087  {
3088  (void) GetNextToken(q,&q,extent,token);
3089  graphic_context[n]->interline_spacing=GetDrawValue(token,
3090  &next_token);
3091  if (token == next_token)
3092  ThrowPointExpectedException(image,token);
3093  break;
3094  }
3095  if (LocaleCompare("interword-spacing",keyword) == 0)
3096  {
3097  (void) GetNextToken(q,&q,extent,token);
3098  graphic_context[n]->interword_spacing=GetDrawValue(token,
3099  &next_token);
3100  if (token == next_token)
3101  ThrowPointExpectedException(image,token);
3102  break;
3103  }
3104  status=MagickFalse;
3105  break;
3106  }
3107  case 'k':
3108  case 'K':
3109  {
3110  if (LocaleCompare("kerning",keyword) == 0)
3111  {
3112  (void) GetNextToken(q,&q,extent,token);
3113  graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3114  if (token == next_token)
3115  ThrowPointExpectedException(image,token);
3116  break;
3117  }
3118  status=MagickFalse;
3119  break;
3120  }
3121  case 'l':
3122  case 'L':
3123  {
3124  if (LocaleCompare("letter-spacing",keyword) == 0)
3125  {
3126  (void) GetNextToken(q,&q,extent,token);
3127  if (IsPoint(token) == MagickFalse)
3128  break;
3129  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3130  clone_info->text=AcquireString(" ");
3131  status&=GetTypeMetrics(image,clone_info,&metrics);
3132  graphic_context[n]->kerning=metrics.width*
3133  GetDrawValue(token,&next_token);
3134  clone_info=DestroyDrawInfo(clone_info);
3135  if (token == next_token)
3136  ThrowPointExpectedException(image,token);
3137  break;
3138  }
3139  if (LocaleCompare("line",keyword) == 0)
3140  {
3141  primitive_type=LinePrimitive;
3142  break;
3143  }
3144  status=MagickFalse;
3145  break;
3146  }
3147  case 'm':
3148  case 'M':
3149  {
3150  if (LocaleCompare("mask",keyword) == 0)
3151  {
3152  const char
3153  *mask_path;
3154 
3155  /*
3156  Take a node from within the MVG document, and duplicate it here.
3157  */
3158  (void) GetNextToken(q,&q,extent,token);
3159  mask_path=(const char *) GetValueFromSplayTree(macros,token);
3160  if (mask_path != (const char *) NULL)
3161  {
3162  if (graphic_context[n]->composite_mask != (Image *) NULL)
3163  graphic_context[n]->composite_mask=
3164  DestroyImage(graphic_context[n]->composite_mask);
3165  graphic_context[n]->composite_mask=DrawCompositeMask(image,
3166  graphic_context[n],token,mask_path,&image->exception);
3167  if (graphic_context[n]->compliance != SVGCompliance)
3168  status=SetImageMask(image,graphic_context[n]->composite_mask);
3169  }
3170  break;
3171  }
3172  if (LocaleCompare("matte",keyword) == 0)
3173  {
3174  primitive_type=MattePrimitive;
3175  break;
3176  }
3177  status=MagickFalse;
3178  break;
3179  }
3180  case 'o':
3181  case 'O':
3182  {
3183  if (LocaleCompare("offset",keyword) == 0)
3184  {
3185  (void) GetNextToken(q,&q,extent,token);
3186  break;
3187  }
3188  if (LocaleCompare("opacity",keyword) == 0)
3189  {
3190  double
3191  opacity;
3192 
3193  (void) GetNextToken(q,&q,extent,token);
3194  if (graphic_context[n]->clip_path != MagickFalse)
3195  break;
3196  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3197  opacity=MagickMin(MagickMax(factor*
3198  GetDrawValue(token,&next_token),0.0),1.0);
3199  if (token == next_token)
3200  ThrowPointExpectedException(image,token);
3201  if (graphic_context[n]->compliance == SVGCompliance)
3202  {
3203  graphic_context[n]->fill_opacity*=(1.0-opacity);
3204  graphic_context[n]->stroke_opacity*=(1.0-opacity);
3205  }
3206  else
3207  {
3208  graphic_context[n]->fill_opacity=(QuantumRange-
3209  graphic_context[n]->fill_opacity)*(1.0-opacity);
3210  graphic_context[n]->stroke_opacity=(QuantumRange-
3211  graphic_context[n]->stroke_opacity)*(1.0-opacity);
3212  }
3213  break;
3214  }
3215  status=MagickFalse;
3216  break;
3217  }
3218  case 'p':
3219  case 'P':
3220  {
3221  if (LocaleCompare("path",keyword) == 0)
3222  {
3223  primitive_type=PathPrimitive;
3224  break;
3225  }
3226  if (LocaleCompare("point",keyword) == 0)
3227  {
3228  primitive_type=PointPrimitive;
3229  break;
3230  }
3231  if (LocaleCompare("polyline",keyword) == 0)
3232  {
3233  primitive_type=PolylinePrimitive;
3234  break;
3235  }
3236  if (LocaleCompare("polygon",keyword) == 0)
3237  {
3238  primitive_type=PolygonPrimitive;
3239  break;
3240  }
3241  if (LocaleCompare("pop",keyword) == 0)
3242  {
3243  if (GetNextToken(q,&q,extent,token) < 1)
3244  break;
3245  if (LocaleCompare("class",token) == 0)
3246  break;
3247  if (LocaleCompare("clip-path",token) == 0)
3248  break;
3249  if (LocaleCompare("defs",token) == 0)
3250  {
3251  defsDepth--;
3252  graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3253  MagickTrue;
3254  break;
3255  }
3256  if (LocaleCompare("gradient",token) == 0)
3257  break;
3258  if (LocaleCompare("graphic-context",token) == 0)
3259  {
3260  if (n <= 0)
3261  {
3262  (void) ThrowMagickException(&image->exception,
3263  GetMagickModule(),DrawError,
3264  "UnbalancedGraphicContextPushPop","`%s'",token);
3265  status=MagickFalse;
3266  n=0;
3267  break;
3268  }
3269  if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3270  (graphic_context[n]->compliance != SVGCompliance))
3271  if (LocaleCompare(graphic_context[n]->clip_mask,
3272  graphic_context[n-1]->clip_mask) != 0)
3273  status=SetImageClipMask(image,(Image *) NULL);
3274  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3275  n--;
3276  break;
3277  }
3278  if (LocaleCompare("mask",token) == 0)
3279  break;
3280  if (LocaleCompare("pattern",token) == 0)
3281  break;
3282  if (LocaleCompare("symbol",token) == 0)
3283  {
3284  symbolDepth--;
3285  graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3286  MagickTrue;
3287  break;
3288  }
3289  status=MagickFalse;
3290  break;
3291  }
3292  if (LocaleCompare("push",keyword) == 0)
3293  {
3294  if (GetNextToken(q,&q,extent,token) < 1)
3295  break;
3296  if (LocaleCompare("class",token) == 0)
3297  {
3298  /*
3299  Class context.
3300  */
3301  for (p=q; *q != '\0'; )
3302  {
3303  if (GetNextToken(q,&q,extent,token) < 1)
3304  break;
3305  if (LocaleCompare(token,"pop") != 0)
3306  continue;
3307  (void) GetNextToken(q,(const char **) NULL,extent,token);
3308  if (LocaleCompare(token,"class") != 0)
3309  continue;
3310  break;
3311  }
3312  (void) GetNextToken(q,&q,extent,token);
3313  break;
3314  }
3315  if (LocaleCompare("clip-path",token) == 0)
3316  {
3317  (void) GetNextToken(q,&q,extent,token);
3318  for (p=q; *q != '\0'; )
3319  {
3320  if (GetNextToken(q,&q,extent,token) < 1)
3321  break;
3322  if (LocaleCompare(token,"pop") != 0)
3323  continue;
3324  (void) GetNextToken(q,(const char **) NULL,extent,token);
3325  if (LocaleCompare(token,"clip-path") != 0)
3326  continue;
3327  break;
3328  }
3329  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3330  {
3331  status=MagickFalse;
3332  break;
3333  }
3334  (void) GetNextToken(q,&q,extent,token);
3335  break;
3336  }
3337  if (LocaleCompare("defs",token) == 0)
3338  {
3339  defsDepth++;
3340  graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3341  MagickTrue;
3342  break;
3343  }
3344  if (LocaleCompare("gradient",token) == 0)
3345  {
3346  char
3347  key[2*MaxTextExtent],
3348  name[MaxTextExtent],
3349  type[MaxTextExtent];
3350 
3351  SegmentInfo
3352  segment;
3353 
3354  (void) GetNextToken(q,&q,extent,token);
3355  (void) CopyMagickString(name,token,MaxTextExtent);
3356  (void) GetNextToken(q,&q,extent,token);
3357  (void) CopyMagickString(type,token,MaxTextExtent);
3358  (void) GetNextToken(q,&q,extent,token);
3359  segment.x1=GetDrawValue(token,&next_token);
3360  if (token == next_token)
3361  ThrowPointExpectedException(image,token);
3362  (void) GetNextToken(q,&q,extent,token);
3363  if (*token == ',')
3364  (void) GetNextToken(q,&q,extent,token);
3365  segment.y1=GetDrawValue(token,&next_token);
3366  if (token == next_token)
3367  ThrowPointExpectedException(image,token);
3368  (void) GetNextToken(q,&q,extent,token);
3369  if (*token == ',')
3370  (void) GetNextToken(q,&q,extent,token);
3371  segment.x2=GetDrawValue(token,&next_token);
3372  if (token == next_token)
3373  ThrowPointExpectedException(image,token);
3374  (void) GetNextToken(q,&q,extent,token);
3375  if (*token == ',')
3376  (void) GetNextToken(q,&q,extent,token);
3377  segment.y2=GetDrawValue(token,&next_token);
3378  if (token == next_token)
3379  ThrowPointExpectedException(image,token);
3380  if (LocaleCompare(type,"radial") == 0)
3381  {
3382  (void) GetNextToken(q,&q,extent,token);
3383  if (*token == ',')
3384  (void) GetNextToken(q,&q,extent,token);
3385  }
3386  for (p=q; *q != '\0'; )
3387  {
3388  if (GetNextToken(q,&q,extent,token) < 1)
3389  break;
3390  if (LocaleCompare(token,"pop") != 0)
3391  continue;
3392  (void) GetNextToken(q,(const char **) NULL,extent,token);
3393  if (LocaleCompare(token,"gradient") != 0)
3394  continue;
3395  break;
3396  }
3397  if ((q == (char *) NULL) || (*q == '\0') ||
3398  (p == (char *) NULL) || ((q-4) < p))
3399  {
3400  status=MagickFalse;
3401  break;
3402  }
3403  (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3404  bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3405  graphic_context[n]->affine.ry*segment.y1+
3406  graphic_context[n]->affine.tx;
3407  bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3408  graphic_context[n]->affine.sy*segment.y1+
3409  graphic_context[n]->affine.ty;
3410  bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3411  graphic_context[n]->affine.ry*segment.y2+
3412  graphic_context[n]->affine.tx;
3413  bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3414  graphic_context[n]->affine.sy*segment.y2+
3415  graphic_context[n]->affine.ty;
3416  (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3417  (void) SetImageArtifact(image,key,token);
3418  (void) FormatLocaleString(key,MaxTextExtent,"%s-type",name);
3419  (void) SetImageArtifact(image,key,type);
3420  (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3421  (void) FormatLocaleString(geometry,MaxTextExtent,
3422  "%gx%g%+.15g%+.15g",
3423  MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3424  MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3425  bounds.x1,bounds.y1);
3426  (void) SetImageArtifact(image,key,geometry);
3427  (void) GetNextToken(q,&q,extent,token);
3428  break;
3429  }
3430  if (LocaleCompare("graphic-context",token) == 0)
3431  {
3432  n++;
3433  graphic_context=(DrawInfo **) ResizeQuantumMemory(
3434  graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3435  if (graphic_context == (DrawInfo **) NULL)
3436  {
3437  (void) ThrowMagickException(&image->exception,
3438  GetMagickModule(),ResourceLimitError,
3439  "MemoryAllocationFailed","`%s'",image->filename);
3440  break;
3441  }
3442  graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3443  graphic_context[n-1]);
3444  if (*q == '"')
3445  {
3446  (void) GetNextToken(q,&q,extent,token);
3447  (void) CloneString(&graphic_context[n]->id,token);
3448  }
3449  break;
3450  }
3451  if (LocaleCompare("mask",token) == 0)
3452  {
3453  (void) GetNextToken(q,&q,extent,token);
3454  break;
3455  }
3456  if (LocaleCompare("pattern",token) == 0)
3457  {
3459  bounds;
3460 
3461  (void) GetNextToken(q,&q,extent,token);
3462  (void) CopyMagickString(name,token,MaxTextExtent);
3463  (void) GetNextToken(q,&q,extent,token);
3464  bounds.x=CastDoubleToLong(ceil(GetDrawValue(token,
3465  &next_token)-0.5));
3466  if (token == next_token)
3467  ThrowPointExpectedException(image,token);
3468  (void) GetNextToken(q,&q,extent,token);
3469  if (*token == ',')
3470  (void) GetNextToken(q,&q,extent,token);
3471  bounds.y=CastDoubleToLong(ceil(GetDrawValue(token,
3472  &next_token)-0.5));
3473  if (token == next_token)
3474  ThrowPointExpectedException(image,token);
3475  (void) GetNextToken(q,&q,extent,token);
3476  if (*token == ',')
3477  (void) GetNextToken(q,&q,extent,token);
3478  bounds.width=(size_t) floor(GetDrawValue(token,&next_token)+
3479  0.5);
3480  if (token == next_token)
3481  ThrowPointExpectedException(image,token);
3482  (void) GetNextToken(q,&q,extent,token);
3483  if (*token == ',')
3484  (void) GetNextToken(q,&q,extent,token);
3485  bounds.height=(size_t) floor(GetDrawValue(token,&next_token)+
3486  0.5);
3487  if (token == next_token)
3488  ThrowPointExpectedException(image,token);
3489  for (p=q; *q != '\0'; )
3490  {
3491  if (GetNextToken(q,&q,extent,token) < 1)
3492  break;
3493  if (LocaleCompare(token,"pop") != 0)
3494  continue;
3495  (void) GetNextToken(q,(const char **) NULL,extent,token);
3496  if (LocaleCompare(token,"pattern") != 0)
3497  continue;
3498  break;
3499  }
3500  if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3501  {
3502  status=MagickFalse;
3503  break;
3504  }
3505  (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3506  (void) FormatLocaleString(key,MaxTextExtent,"%s",name);
3507  (void) SetImageArtifact(image,key,token);
3508  (void) FormatLocaleString(key,MaxTextExtent,"%s-geometry",name);
3509  (void) FormatLocaleString(geometry,MaxTextExtent,
3510  "%.20gx%.20g%+.20g%+.20g",(double) bounds.width,(double)
3511  bounds.height,(double) bounds.x,(double) bounds.y);
3512  (void) SetImageArtifact(image,key,geometry);
3513  (void) GetNextToken(q,&q,extent,token);
3514  break;
3515  }
3516  if (LocaleCompare("symbol",token) == 0)
3517  {
3518  symbolDepth++;
3519  graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3520  MagickTrue;
3521  break;
3522  }
3523  status=MagickFalse;
3524  break;
3525  }
3526  status=MagickFalse;
3527  break;
3528  }
3529  case 'r':
3530  case 'R':
3531  {
3532  if (LocaleCompare("rectangle",keyword) == 0)
3533  {
3534  primitive_type=RectanglePrimitive;
3535  break;
3536  }
3537  if (LocaleCompare("rotate",keyword) == 0)
3538  {
3539  (void) GetNextToken(q,&q,extent,token);
3540  angle=GetDrawValue(token,&next_token);
3541  if (token == next_token)
3542  ThrowPointExpectedException(image,token);
3543  affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3544  affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3545  affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3546  affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3547  break;
3548  }
3549  if (LocaleCompare("roundRectangle",keyword) == 0)
3550  {
3551  primitive_type=RoundRectanglePrimitive;
3552  break;
3553  }
3554  status=MagickFalse;
3555  break;
3556  }
3557  case 's':
3558  case 'S':
3559  {
3560  if (LocaleCompare("scale",keyword) == 0)
3561  {
3562  (void) GetNextToken(q,&q,extent,token);
3563  affine.sx=GetDrawValue(token,&next_token);
3564  if (token == next_token)
3565  ThrowPointExpectedException(image,token);
3566  (void) GetNextToken(q,&q,extent,token);
3567  if (*token == ',')
3568  (void) GetNextToken(q,&q,extent,token);
3569  affine.sy=GetDrawValue(token,&next_token);
3570  if (token == next_token)
3571  ThrowPointExpectedException(image,token);
3572  break;
3573  }
3574  if (LocaleCompare("skewX",keyword) == 0)
3575  {
3576  (void) GetNextToken(q,&q,extent,token);
3577  angle=GetDrawValue(token,&next_token);
3578  if (token == next_token)
3579  ThrowPointExpectedException(image,token);
3580  affine.ry=sin(DegreesToRadians(angle));
3581  break;
3582  }
3583  if (LocaleCompare("skewY",keyword) == 0)
3584  {
3585  (void) GetNextToken(q,&q,extent,token);
3586  angle=GetDrawValue(token,&next_token);
3587  if (token == next_token)
3588  ThrowPointExpectedException(image,token);
3589  affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3590  break;
3591  }
3592  if (LocaleCompare("stop-color",keyword) == 0)
3593  {
3594  GradientType
3595  type;
3596 
3597  PixelPacket
3598  stop_color;
3599 
3600  (void) GetNextToken(q,&q,extent,token);
3601  status&=QueryColorDatabase(token,&stop_color,&image->exception);
3602  type=LinearGradient;
3603  if (draw_info->gradient.type == RadialGradient)
3604  type=RadialGradient;
3605  (void) GradientImage(image,type,PadSpread,&start_color,&stop_color);
3606  start_color=stop_color;
3607  (void) GetNextToken(q,&q,extent,token);
3608  break;
3609  }
3610  if (LocaleCompare("stroke",keyword) == 0)
3611  {
3612  const char
3613  *mvg_class;
3614 
3615  (void) GetNextToken(q,&q,extent,token);
3616  if (graphic_context[n]->clip_path != MagickFalse)
3617  break;
3618  mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3619  if (mvg_class != (const char *) NULL)
3620  {
3621  (void) DrawPatternPath(image,draw_info,mvg_class,
3622  &graphic_context[n]->stroke_pattern);
3623  break;
3624  }
3625  (void) FormatLocaleString(pattern,MaxTextExtent,"%s",token);
3626  if (GetImageArtifact(image,pattern) != (const char *) NULL)
3627  {
3628  (void) DrawPatternPath(image,draw_info,token,
3629  &graphic_context[n]->stroke_pattern);
3630  break;
3631  }
3632  status&=QueryColorDatabase(token,&graphic_context[n]->stroke,
3633  &image->exception);
3634  if (graphic_context[n]->stroke_opacity != OpaqueOpacity)
3635  graphic_context[n]->stroke.opacity=ClampToQuantum(
3636  graphic_context[n]->stroke_opacity);
3637  break;
3638  }
3639  if (LocaleCompare("stroke-antialias",keyword) == 0)
3640  {
3641  (void) GetNextToken(q,&q,extent,token);
3642  graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3643  MagickTrue : MagickFalse;
3644  break;
3645  }
3646  if (LocaleCompare("stroke-dasharray",keyword) == 0)
3647  {
3648  if (graphic_context[n]->dash_pattern != (double *) NULL)
3649  graphic_context[n]->dash_pattern=(double *)
3650  RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3651  if (IsPoint(q) != MagickFalse)
3652  {
3653  const char
3654  *p;
3655 
3656  p=q;
3657  (void) GetNextToken(p,&p,extent,token);
3658  if (*token == ',')
3659  (void) GetNextToken(p,&p,extent,token);
3660  for (x=0; IsPoint(token) != MagickFalse; x++)
3661  {
3662  (void) GetNextToken(p,&p,extent,token);
3663  if (*token == ',')
3664  (void) GetNextToken(p,&p,extent,token);
3665  }
3666  graphic_context[n]->dash_pattern=(double *)
3667  AcquireQuantumMemory((size_t) (2*x+2),
3668  sizeof(*graphic_context[n]->dash_pattern));
3669  if (graphic_context[n]->dash_pattern == (double *) NULL)
3670  {
3671  (void) ThrowMagickException(&image->exception,
3672  GetMagickModule(),ResourceLimitError,
3673  "MemoryAllocationFailed","`%s'",image->filename);
3674  status=MagickFalse;
3675  break;
3676  }
3677  (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3678  (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3679  for (j=0; j < x; j++)
3680  {
3681  (void) GetNextToken(q,&q,extent,token);
3682  if (*token == ',')
3683  (void) GetNextToken(q,&q,extent,token);
3684  graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3685  &next_token);
3686  if (token == next_token)
3687  ThrowPointExpectedException(image,token);
3688  if (graphic_context[n]->dash_pattern[j] <= 0.0)
3689  status=MagickFalse;
3690  }
3691  if ((x & 0x01) != 0)
3692  for ( ; j < (2*x); j++)
3693  graphic_context[n]->dash_pattern[j]=
3694  graphic_context[n]->dash_pattern[j-x];
3695  graphic_context[n]->dash_pattern[j]=0.0;
3696  break;
3697  }
3698  (void) GetNextToken(q,&q,extent,token);
3699  break;
3700  }
3701  if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3702  {
3703  (void) GetNextToken(q,&q,extent,token);
3704  graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3705  if (token == next_token)
3706  ThrowPointExpectedException(image,token);
3707  break;
3708  }
3709  if (LocaleCompare("stroke-linecap",keyword) == 0)
3710  {
3711  ssize_t
3712  linecap;
3713 
3714  (void) GetNextToken(q,&q,extent,token);
3715  linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3716  if (linecap == -1)
3717  {
3718  status=MagickFalse;
3719  break;
3720  }
3721  graphic_context[n]->linecap=(LineCap) linecap;
3722  break;
3723  }
3724  if (LocaleCompare("stroke-linejoin",keyword) == 0)
3725  {
3726  ssize_t
3727  linejoin;
3728 
3729  (void) GetNextToken(q,&q,extent,token);
3730  linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3731  token);
3732  if (linejoin == -1)
3733  {
3734  status=MagickFalse;
3735  break;
3736  }
3737  graphic_context[n]->linejoin=(LineJoin) linejoin;
3738  break;
3739  }
3740  if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3741  {
3742  (void) GetNextToken(q,&q,extent,token);
3743  graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3744  break;
3745  }
3746  if (LocaleCompare("stroke-opacity",keyword) == 0)
3747  {
3748  double
3749  opacity;
3750 
3751  (void) GetNextToken(q,&q,extent,token);
3752  if (graphic_context[n]->clip_path != MagickFalse)
3753  break;
3754  factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3755  opacity=MagickMin(MagickMax(factor*
3756  GetDrawValue(token,&next_token),0.0),1.0);
3757  if (token == next_token)
3758  ThrowPointExpectedException(image,token);
3759  if (graphic_context[n]->compliance == SVGCompliance)
3760  graphic_context[n]->stroke_opacity*=(1.0-opacity);
3761  else
3762  graphic_context[n]->stroke_opacity=(QuantumRange-
3763  graphic_context[n]->stroke_opacity)*(1.0-opacity);
3764  if (graphic_context[n]->stroke.opacity != TransparentOpacity)
3765  graphic_context[n]->stroke.opacity=(Quantum)
3766  graphic_context[n]->stroke_opacity;
3767  else
3768  graphic_context[n]->stroke.opacity=ClampToQuantum(QuantumRange*
3769  opacity);
3770  break;
3771  }
3772  if (LocaleCompare("stroke-width",keyword) == 0)
3773  {
3774  (void) GetNextToken(q,&q,extent,token);
3775  if (graphic_context[n]->clip_path != MagickFalse)
3776  break;
3777  graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3778  if (token == next_token)
3779  ThrowPointExpectedException(image,token);
3780  break;
3781  }
3782  status=MagickFalse;
3783  break;
3784  }
3785  case 't':
3786  case 'T':
3787  {
3788  if (LocaleCompare("text",keyword) == 0)
3789  {
3790  primitive_type=TextPrimitive;
3791  cursor=0.0;
3792  break;
3793  }
3794  if (LocaleCompare("text-align",keyword) == 0)
3795  {
3796  ssize_t
3797  align;
3798 
3799  (void) GetNextToken(q,&q,extent,token);
3800  align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3801  if (align == -1)
3802  {
3803  status=MagickFalse;
3804  break;
3805  }
3806  graphic_context[n]->align=(AlignType) align;
3807  break;
3808  }
3809  if (LocaleCompare("text-anchor",keyword) == 0)
3810  {
3811  ssize_t
3812  align;
3813 
3814  (void) GetNextToken(q,&q,extent,token);
3815  align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3816  if (align == -1)
3817  {
3818  status=MagickFalse;
3819  break;
3820  }
3821  graphic_context[n]->align=(AlignType) align;
3822  break;
3823  }
3824  if (LocaleCompare("text-antialias",keyword) == 0)
3825  {
3826  (void) GetNextToken(q,&q,extent,token);
3827  graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3828  MagickTrue : MagickFalse;
3829  break;
3830  }
3831  if (LocaleCompare("text-undercolor",keyword) == 0)
3832  {
3833  (void) GetNextToken(q,&q,extent,token);
3834  status&=QueryColorDatabase(token,&graphic_context[n]->undercolor,
3835  &image->exception);
3836  break;
3837  }
3838  if (LocaleCompare("translate",keyword) == 0)
3839  {
3840  (void) GetNextToken(q,&q,extent,token);
3841  affine.tx=GetDrawValue(token,&next_token);
3842  if (token == next_token)
3843  ThrowPointExpectedException(image,token);
3844  (void) GetNextToken(q,&q,extent,token);
3845  if (*token == ',')
3846  (void) GetNextToken(q,&q,extent,token);
3847  affine.ty=GetDrawValue(token,&next_token);
3848  if (token == next_token)
3849  ThrowPointExpectedException(image,token);
3850  break;
3851  }
3852  status=MagickFalse;
3853  break;
3854  }
3855  case 'u':
3856  case 'U':
3857  {
3858  if (LocaleCompare("use",keyword) == 0)
3859  {
3860  const char
3861  *use;
3862 
3863  /*
3864  Get a macro from the MVG document, and "use" it here.
3865  */
3866  (void) GetNextToken(q,&q,extent,token);
3867  use=(const char *) GetValueFromSplayTree(macros,token);
3868  if (use != (const char *) NULL)
3869  {
3870  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3871  (void) CloneString(&clone_info->primitive,use);
3872  status=RenderMVGContent(image,clone_info,depth+1);
3873  clone_info=DestroyDrawInfo(clone_info);
3874  }
3875  break;
3876  }
3877  status=MagickFalse;
3878  break;
3879  }
3880  case 'v':
3881  case 'V':
3882  {
3883  if (LocaleCompare("viewbox",keyword) == 0)
3884  {
3885  (void) GetNextToken(q,&q,extent,token);
3886  graphic_context[n]->viewbox.x=CastDoubleToLong(ceil(
3887  GetDrawValue(token,&next_token)-0.5));
3888  if (token == next_token)
3889  ThrowPointExpectedException(image,token);
3890  (void) GetNextToken(q,&q,extent,token);
3891  if (*token == ',')
3892  (void) GetNextToken(q,&q,extent,token);
3893  graphic_context[n]->viewbox.y=CastDoubleToLong(ceil(
3894  GetDrawValue(token,&next_token)-0.5));
3895  if (token == next_token)
3896  ThrowPointExpectedException(image,token);
3897  (void) GetNextToken(q,&q,extent,token);
3898  if (*token == ',')
3899  (void) GetNextToken(q,&q,extent,token);
3900  graphic_context[n]->viewbox.width=(size_t) floor(GetDrawValue(
3901  token,&next_token)+0.5);
3902  if (token == next_token)
3903  ThrowPointExpectedException(image,token);
3904  (void) GetNextToken(q,&q,extent,token);
3905  if (*token == ',')
3906  (void) GetNextToken(q,&q,extent,token);
3907  graphic_context[n]->viewbox.height=(size_t) floor(GetDrawValue(
3908  token,&next_token)+0.5);
3909  if (token == next_token)
3910  ThrowPointExpectedException(image,token);
3911  break;
3912  }
3913  status=MagickFalse;
3914  break;
3915  }
3916  case 'w':
3917  case 'W':
3918  {
3919  if (LocaleCompare("word-spacing",keyword) == 0)
3920  {
3921  (void) GetNextToken(q,&q,extent,token);
3922  graphic_context[n]->interword_spacing=GetDrawValue(token,
3923  &next_token);
3924  if (token == next_token)
3925  ThrowPointExpectedException(image,token);
3926  break;
3927  }
3928  status=MagickFalse;
3929  break;
3930  }
3931  default:
3932  {
3933  status=MagickFalse;
3934  break;
3935  }
3936  }
3937  if (status == MagickFalse)
3938  break;
3939  if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
3940  (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
3941  (fabs(affine.sy-1.0) >= MagickEpsilon) ||
3942  (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
3943  {
3944  graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
3945  graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
3946  graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
3947  graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
3948  graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
3949  current.tx;
3950  graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
3951  current.ty;
3952  }
3953  if (primitive_type == UndefinedPrimitive)
3954  {
3955  if ((draw_info->debug != MagickFalse) && (q > p))
3956  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
3957  (q-p-1),p);
3958  continue;
3959  }
3960  /*
3961  Parse the primitive attributes.
3962  */
3963  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
3964  if (primitive_info[i].text != (char *) NULL)
3965  primitive_info[i].text=DestroyString(primitive_info[i].text);
3966  i=0;
3967  mvg_info.offset=i;
3968  j=0;
3969  primitive_info[0].point.x=0.0;
3970  primitive_info[0].point.y=0.0;
3971  primitive_info[0].coordinates=0;
3972  primitive_info[0].method=FloodfillMethod;
3973  primitive_info[0].closed_subpath=MagickFalse;
3974  for (x=0; *q != '\0'; x++)
3975  {
3976  /*
3977  Define points.
3978  */
3979  if (IsPoint(q) == MagickFalse)
3980  break;
3981  (void) GetNextToken(q,&q,extent,token);
3982  point.x=GetDrawValue(token,&next_token);
3983  if (token == next_token)
3984  ThrowPointExpectedException(image,token);
3985  (void) GetNextToken(q,&q,extent,token);
3986  if (*token == ',')
3987  (void) GetNextToken(q,&q,extent,token);
3988  point.y=GetDrawValue(token,&next_token);
3989  if (token == next_token)
3990  ThrowPointExpectedException(image,token);
3991  (void) GetNextToken(q,(const char **) NULL,extent,token);
3992  if (*token == ',')
3993  (void) GetNextToken(q,&q,extent,token);
3994  primitive_info[i].primitive=primitive_type;
3995  primitive_info[i].point=point;
3996  primitive_info[i].coordinates=0;
3997  primitive_info[i].method=FloodfillMethod;
3998  primitive_info[i].closed_subpath=MagickFalse;
3999  i++;
4000  mvg_info.offset=i;
4001  if (i < (ssize_t) number_points)
4002  continue;
4003  status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4004  primitive_info=(*mvg_info.primitive_info);
4005  }
4006  if (status == MagickFalse)
4007  break;
4008  if (primitive_info[j].text != (char *) NULL)
4009  primitive_info[j].text=DestroyString(primitive_info[j].text);
4010  primitive_info[j].primitive=primitive_type;
4011  primitive_info[j].coordinates=(size_t) x;
4012  primitive_info[j].method=FloodfillMethod;
4013  primitive_info[j].closed_subpath=MagickFalse;
4014  /*
4015  Circumscribe primitive within a circle.
4016  */
4017  bounds.x1=primitive_info[j].point.x;
4018  bounds.y1=primitive_info[j].point.y;
4019  bounds.x2=primitive_info[j].point.x;
4020  bounds.y2=primitive_info[j].point.y;
4021  for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4022  {
4023  point=primitive_info[j+k].point;
4024  if (point.x < bounds.x1)
4025  bounds.x1=point.x;
4026  if (point.y < bounds.y1)
4027  bounds.y1=point.y;
4028  if (point.x > bounds.x2)
4029  bounds.x2=point.x;
4030  if (point.y > bounds.y2)
4031  bounds.y2=point.y;
4032  }
4033  /*
4034  Speculate how many points our primitive might consume.
4035  */
4036  coordinates=(double) primitive_info[j].coordinates;
4037  switch (primitive_type)
4038  {
4039  case RectanglePrimitive:
4040  {
4041  coordinates*=5.0;
4042  break;
4043  }
4044  case RoundRectanglePrimitive:
4045  {
4046  double
4047  alpha,
4048  beta,
4049  radius;
4050 
4051  alpha=bounds.x2-bounds.x1;
4052  beta=bounds.y2-bounds.y1;
4053  radius=hypot(alpha,beta);
4054  coordinates*=5.0;
4055  coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4056  BezierQuantum+360.0;
4057  break;
4058  }
4059  case BezierPrimitive:
4060  {
4061  coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4062  break;
4063  }
4064  case PathPrimitive:
4065  {
4066  char
4067  *s,
4068  *t;
4069 
4070  (void) GetNextToken(q,&q,extent,token);
4071  coordinates=1.0;
4072  t=token;
4073  for (s=token; *s != '\0'; s=t)
4074  {
4075  double
4076  value;
4077 
4078  value=GetDrawValue(s,&t);
4079  (void) value;
4080  if (s == t)
4081  {
4082  t++;
4083  continue;
4084  }
4085  coordinates++;
4086  }
4087  for (s=token; *s != '\0'; s++)
4088  if (strspn(s,"AaCcQqSsTt") != 0)
4089  coordinates+=(20.0*BezierQuantum)+360.0;
4090  break;
4091  }
4092  default:
4093  break;
4094  }
4095  if (status == MagickFalse)
4096  break;
4097  if (((size_t) (i+coordinates)) >= number_points)
4098  {
4099  /*
4100  Resize based on speculative points required by primitive.
4101  */
4102  number_points+=coordinates+1;
4103  if (number_points < (size_t) coordinates)
4104  {
4105  (void) ThrowMagickException(&image->exception,GetMagickModule(),
4106  ResourceLimitError,"MemoryAllocationFailed","`%s'",
4107  image->filename);
4108  break;
4109  }
4110  mvg_info.offset=i;
4111  status&=CheckPrimitiveExtent(&mvg_info,(double) number_points);
4112  primitive_info=(*mvg_info.primitive_info);
4113  }
4114  status&=CheckPrimitiveExtent(&mvg_info,PrimitiveExtentPad);
4115  primitive_info=(*mvg_info.primitive_info);
4116  if (status == MagickFalse)
4117  break;
4118  mvg_info.offset=j;
4119  switch (primitive_type)
4120  {
4121  case PointPrimitive:
4122  default:
4123  {
4124  if (primitive_info[j].coordinates != 1)
4125  {
4126  status=MagickFalse;
4127  break;
4128  }
4129  status&=TracePoint(primitive_info+j,primitive_info[j].point);
4130  primitive_info=(*mvg_info.primitive_info);
4131  i=(ssize_t) (j+primitive_info[j].coordinates);
4132  break;
4133  }
4134  case LinePrimitive:
4135  {
4136  if (primitive_info[j].coordinates != 2)
4137  {
4138  status=MagickFalse;
4139  break;
4140  }
4141  status&=TraceLine(primitive_info+j,primitive_info[j].point,
4142  primitive_info[j+1].point);
4143  primitive_info=(*mvg_info.primitive_info);
4144  i=(ssize_t) (j+primitive_info[j].coordinates);
4145  break;
4146  }
4147  case RectanglePrimitive:
4148  {
4149  if (primitive_info[j].coordinates != 2)
4150  {
4151  status=MagickFalse;
4152  break;
4153  }
4154  status&=TraceRectangle(primitive_info+j,primitive_info[j].point,
4155  primitive_info[j+1].point);
4156  primitive_info=(*mvg_info.primitive_info);
4157  i=(ssize_t) (j+primitive_info[j].coordinates);
4158  break;
4159  }
4160  case RoundRectanglePrimitive:
4161  {
4162  if (primitive_info[j].coordinates != 3)
4163  {
4164  status=MagickFalse;
4165  break;
4166  }
4167  if ((primitive_info[j+2].point.x < 0.0) ||
4168  (primitive_info[j+2].point.y < 0.0))
4169  {
4170  status=MagickFalse;
4171  break;
4172  }
4173  if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4174  {
4175  status=MagickFalse;
4176  break;
4177  }
4178  if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4179  {
4180  status=MagickFalse;
4181  break;
4182  }
4183  status&=TraceRoundRectangle(&mvg_info,primitive_info[j].point,
4184  primitive_info[j+1].point,primitive_info[j+2].point);
4185  primitive_info=(*mvg_info.primitive_info);
4186  i=(ssize_t) (j+primitive_info[j].coordinates);
4187  break;
4188  }
4189  case ArcPrimitive:
4190  {
4191  if (primitive_info[j].coordinates != 3)
4192  {
4193  status=MagickFalse;
4194  break;
4195  }
4196  status&=TraceArc(&mvg_info,primitive_info[j].point,
4197  primitive_info[j+1].point,primitive_info[j+2].point);
4198  primitive_info=(*mvg_info.primitive_info);
4199  i=(ssize_t) (j+primitive_info[j].coordinates);
4200  break;
4201  }
4202  case EllipsePrimitive:
4203  {
4204  if (primitive_info[j].coordinates != 3)
4205  {
4206  status=MagickFalse;
4207  break;
4208  }
4209  if ((primitive_info[j+1].point.x < 0.0) ||
4210  (primitive_info[j+1].point.y < 0.0))
4211  {
4212  status=MagickFalse;
4213  break;
4214  }
4215  status&=TraceEllipse(&mvg_info,primitive_info[j].point,
4216  primitive_info[j+1].point,primitive_info[j+2].point);
4217  primitive_info=(*mvg_info.primitive_info);
4218  i=(ssize_t) (j+primitive_info[j].coordinates);
4219  break;
4220  }
4221  case CirclePrimitive:
4222  {
4223  if (primitive_info[j].coordinates != 2)
4224  {
4225  status=MagickFalse;
4226  break;
4227  }
4228  status&=TraceCircle(&mvg_info,primitive_info[j].point,
4229  primitive_info[j+1].point);
4230  primitive_info=(*mvg_info.primitive_info);
4231  i=(ssize_t) (j+primitive_info[j].coordinates);
4232  break;
4233  }
4234  case PolylinePrimitive:
4235  {
4236  if (primitive_info[j].coordinates < 1)
4237  {
4238  status=MagickFalse;
4239  break;
4240  }
4241  break;
4242  }
4243  case PolygonPrimitive:
4244  {
4245  if (primitive_info[j].coordinates < 3)
4246  {
4247  status=MagickFalse;
4248  break;
4249  }
4250  primitive_info[i]=primitive_info[j];
4251  primitive_info[i].coordinates=0;
4252  primitive_info[j].coordinates++;
4253  primitive_info[j].closed_subpath=MagickTrue;
4254  i++;
4255  break;
4256  }
4257  case BezierPrimitive:
4258  {
4259  if (primitive_info[j].coordinates < 3)
4260  {
4261  status=MagickFalse;
4262  break;
4263  }
4264  status&=TraceBezier(&mvg_info,primitive_info[j].coordinates);
4265  primitive_info=(*mvg_info.primitive_info);
4266  i=(ssize_t) (j+primitive_info[j].coordinates);
4267  break;
4268  }
4269  case PathPrimitive:
4270  {
4271  coordinates=(double) TracePath(image,&mvg_info,token);
4272  primitive_info=(*mvg_info.primitive_info);
4273  if (coordinates < 0.0)
4274  {
4275  status=MagickFalse;
4276  break;
4277  }
4278  i=(ssize_t) (j+coordinates);
4279  break;
4280  }
4281  case ColorPrimitive:
4282  case MattePrimitive:
4283  {
4284  ssize_t
4285  method;
4286 
4287  if (primitive_info[j].coordinates != 1)
4288  {
4289  status=MagickFalse;
4290  break;
4291  }
4292  (void) GetNextToken(q,&q,extent,token);
4293  method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4294  if (method == -1)
4295  {
4296  status=MagickFalse;
4297  break;
4298  }
4299  primitive_info[j].method=(PaintMethod) method;
4300  break;
4301  }
4302  case TextPrimitive:
4303  {
4304  char
4305  geometry[MagickPathExtent];
4306 
4307  if (primitive_info[j].coordinates != 1)
4308  {
4309  status=MagickFalse;
4310  break;
4311  }
4312  if (*token != ',')
4313  (void) GetNextToken(q,&q,extent,token);
4314  (void) CloneString(&primitive_info[j].text,token);
4315  /*
4316  Compute text cursor offset.
4317  */
4318  clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4319  if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4320  (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4321  {
4322  mvg_info.point=primitive_info->point;
4323  primitive_info->point.x+=cursor;
4324  }
4325  else
4326  {
4327  mvg_info.point=primitive_info->point;
4328  cursor=0.0;
4329  }
4330  (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
4331  primitive_info->point.x,primitive_info->point.y);
4332  clone_info->render=MagickFalse;
4333  clone_info->text=AcquireString(token);
4334  status&=GetTypeMetrics(image,clone_info,&metrics);
4335  clone_info=DestroyDrawInfo(clone_info);
4336  cursor+=metrics.width;
4337  if (graphic_context[n]->compliance != SVGCompliance)
4338  cursor=0.0;
4339  break;
4340  }
4341  case ImagePrimitive:
4342  {
4343  if (primitive_info[j].coordinates != 2)
4344  {
4345  status=MagickFalse;
4346  break;
4347  }
4348  (void) GetNextToken(q,&q,extent,token);
4349  (void) CloneString(&primitive_info[j].text,token);
4350  break;
4351  }
4352  }
4353  mvg_info.offset=i;
4354  if (status == 0)
4355  break;
4356  primitive_info[i].primitive=UndefinedPrimitive;
4357  if ((draw_info->debug != MagickFalse) && (q > p))
4358  (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4359  /*
4360  Sanity check.
4361  */
4362  status&=CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4363  &graphic_context[n]->affine));
4364  primitive_info=(*mvg_info.primitive_info);
4365  if (status == 0)
4366  break;
4367  status&=CheckPrimitiveExtent(&mvg_info,(double)
4368  graphic_context[n]->stroke_width);
4369  primitive_info=(*mvg_info.primitive_info);
4370  if (status == 0)
4371  break;
4372  if (i == 0)
4373  continue;
4374  /*
4375  Transform points.
4376  */
4377  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4378  {
4379  point=primitive_info[i].point;
4380  primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4381  graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4382  primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4383  graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4384  point=primitive_info[i].point;
4385  if (point.x < graphic_context[n]->bounds.x1)
4386  graphic_context[n]->bounds.x1=point.x;
4387  if (point.y < graphic_context[n]->bounds.y1)
4388  graphic_context[n]->bounds.y1=point.y;
4389  if (point.x > graphic_context[n]->bounds.x2)
4390  graphic_context[n]->bounds.x2=point.x;
4391  if (point.y > graphic_context[n]->bounds.y2)
4392  graphic_context[n]->bounds.y2=point.y;
4393  if (primitive_info[i].primitive == ImagePrimitive)
4394  break;
4395  if (i >= (ssize_t) number_points)
4396  ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4397  }
4398  if (graphic_context[n]->render != MagickFalse)
4399  {
4400  if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4401  (graphic_context[n]->clip_mask != (char *) NULL) &&
4402  (LocaleCompare(graphic_context[n]->clip_mask,
4403  graphic_context[n-1]->clip_mask) != 0))
4404  {
4405  const char
4406  *clip_path;
4407 
4408  clip_path=(const char *) GetValueFromSplayTree(macros,
4409  graphic_context[n]->clip_mask);
4410  if (clip_path != (const char *) NULL)
4411  (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4412  clip_path);
4413  status&=DrawClipPath(image,graphic_context[n],
4414  graphic_context[n]->clip_mask);
4415  }
4416  status&=DrawPrimitive(image,graphic_context[n],primitive_info);
4417  }
4418  proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4419  primitive_extent);
4420  if (proceed == MagickFalse)
4421  break;
4422  if (status == 0)
4423  break;
4424  }
4425  if (draw_info->debug != MagickFalse)
4426  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4427  /*
4428  Relinquish resources.
4429  */
4430  macros=DestroySplayTree(macros);
4431  token=DestroyString(token);
4432  if (primitive_info != (PrimitiveInfo *) NULL)
4433  {
4434  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4435  if (primitive_info[i].text != (char *) NULL)
4436  primitive_info[i].text=DestroyString(primitive_info[i].text);
4437  primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4438  }
4439  primitive=DestroyString(primitive);
4440  for ( ; n >= 0; n--)
4441  graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4442  graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4443  if (status == MagickFalse)
4444  ThrowBinaryImageException(DrawError,
4445  "NonconformingDrawingPrimitiveDefinition",keyword);
4446  return(status != 0 ? MagickTrue : MagickFalse);
4447 }
4448 
4449 MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info)
4450 {
4451  return(RenderMVGContent(image,draw_info,0));
4452 }
4453 ␌
4454 /*
4455 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4456 % %
4457 % %
4458 % %
4459 % D r a w P a t t e r n P a t h %
4460 % %
4461 % %
4462 % %
4463 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4464 %
4465 % DrawPatternPath() draws a pattern.
4466 %
4467 % The format of the DrawPatternPath method is:
4468 %
4469 % MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4470 % const char *name,Image **pattern)
4471 %
4472 % A description of each parameter follows:
4473 %
4474 % o image: the image.
4475 %
4476 % o draw_info: the draw info.
4477 %
4478 % o name: the pattern name.
4479 %
4480 % o image: the image.
4481 %
4482 */
4483 MagickExport MagickBooleanType DrawPatternPath(Image *image,
4484  const DrawInfo *draw_info,const char *name,Image **pattern)
4485 {
4486  char
4487  property[MaxTextExtent];
4488 
4489  const char
4490  *geometry,
4491  *path,
4492  *type;
4493 
4494  DrawInfo
4495  *clone_info;
4496 
4497  ImageInfo
4498  *image_info;
4499 
4500  MagickBooleanType
4501  status;
4502 
4503  assert(image != (Image *) NULL);
4504  assert(image->signature == MagickCoreSignature);
4505  assert(draw_info != (const DrawInfo *) NULL);
4506  if (IsEventLogging() != MagickFalse)
4507  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4508  assert(name != (const char *) NULL);
4509  (void) FormatLocaleString(property,MaxTextExtent,"%s",name);
4510  path=GetImageArtifact(image,property);
4511  if (path == (const char *) NULL)
4512  return(MagickFalse);
4513  (void) FormatLocaleString(property,MaxTextExtent,"%s-geometry",name);
4514  geometry=GetImageArtifact(image,property);
4515  if (geometry == (const char *) NULL)
4516  return(MagickFalse);
4517  if ((*pattern) != (Image *) NULL)
4518  *pattern=DestroyImage(*pattern);
4519  image_info=AcquireImageInfo();
4520  image_info->size=AcquireString(geometry);
4521  *pattern=AcquireImage(image_info);
4522  image_info=DestroyImageInfo(image_info);
4523  (void) QueryColorDatabase("#00000000",&(*pattern)->background_color,
4524  &image->exception);
4525  (void) SetImageBackgroundColor(*pattern);
4526  if (draw_info->debug != MagickFalse)
4527  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4528  "begin pattern-path %s %s",name,geometry);
4529  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4530  if (clone_info->fill_pattern != (Image *) NULL)
4531  clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4532  if (clone_info->stroke_pattern != (Image *) NULL)
4533  clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4534  (void) FormatLocaleString(property,MaxTextExtent,"%s-type",name);
4535  type=GetImageArtifact(image,property);
4536  if (type != (const char *) NULL)
4537  clone_info->gradient.type=(GradientType) ParseCommandOption(
4538  MagickGradientOptions,MagickFalse,type);
4539  (void) CloneString(&clone_info->primitive,path);
4540  status=RenderMVGContent(*pattern,clone_info,0);
4541  clone_info=DestroyDrawInfo(clone_info);
4542  if (draw_info->debug != MagickFalse)
4543  (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4544  return(status);
4545 }
4546 ␌
4547 /*
4548 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4549 % %
4550 % %
4551 % %
4552 + D r a w P o l y g o n P r i m i t i v e %
4553 % %
4554 % %
4555 % %
4556 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4557 %
4558 % DrawPolygonPrimitive() draws a polygon on the image.
4559 %
4560 % The format of the DrawPolygonPrimitive method is:
4561 %
4562 % MagickBooleanType DrawPolygonPrimitive(Image *image,
4563 % const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4564 %
4565 % A description of each parameter follows:
4566 %
4567 % o image: the image.
4568 %
4569 % o draw_info: the draw info.
4570 %
4571 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4572 %
4573 */
4574 
4575 static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4576 {
4577  ssize_t
4578  i;
4579 
4580  assert(polygon_info != (PolygonInfo **) NULL);
4581  for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4582  if (polygon_info[i] != (PolygonInfo *) NULL)
4583  polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4584  polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4585  return(polygon_info);
4586 }
4587 
4588 static PolygonInfo **AcquirePolygonTLS(const DrawInfo *draw_info,
4589  const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
4590 {
4591  PathInfo
4592  *magick_restrict path_info;
4593 
4594  PolygonInfo
4595  **polygon_info;
4596 
4597  size_t
4598  number_threads;
4599 
4600  number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4601  polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4602  sizeof(*polygon_info));
4603  if (polygon_info == (PolygonInfo **) NULL)
4604  {
4605  (void) ThrowMagickException(exception,GetMagickModule(),
4606  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4607  return((PolygonInfo **) NULL);
4608  }
4609  (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4610  path_info=ConvertPrimitiveToPath(draw_info,primitive_info,exception);
4611  if (path_info == (PathInfo *) NULL)
4612  return(DestroyPolygonTLS(polygon_info));
4613  polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4614  if (polygon_info[0] == (PolygonInfo *) NULL)
4615  {
4616  (void) ThrowMagickException(exception,GetMagickModule(),
4617  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4618  return(DestroyPolygonTLS(polygon_info));
4619  }
4620  path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4621  return(polygon_info);
4622 }
4623 
4624 static MagickBooleanType AcquirePolygonEdgesTLS(PolygonInfo **polygon_info,
4625  const size_t number_threads,ExceptionInfo *exception)
4626 {
4627  ssize_t
4628  i;
4629 
4630  for (i=1; i < (ssize_t) number_threads; i++)
4631  {
4632  EdgeInfo
4633  *edge_info;
4634 
4635  ssize_t
4636  j;
4637 
4638  polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4639  sizeof(*polygon_info[i]));
4640  if (polygon_info[i] == (PolygonInfo *) NULL)
4641  {
4642  (void) ThrowMagickException(exception,GetMagickModule(),
4643  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4644  return(MagickFalse);
4645  }
4646  polygon_info[i]->number_edges=0;
4647  edge_info=polygon_info[0]->edges;
4648  polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4649  polygon_info[0]->number_edges,sizeof(*edge_info));
4650  if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4651  {
4652  (void) ThrowMagickException(exception,GetMagickModule(),
4653  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4654  return(MagickFalse);
4655  }
4656  (void) memcpy(polygon_info[i]->edges,edge_info,
4657  polygon_info[0]->number_edges*sizeof(*edge_info));
4658  for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4659  polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4660  polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4661  for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4662  {
4663  edge_info=polygon_info[0]->edges+j;
4664  polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4665  edge_info->number_points,sizeof(*edge_info));
4666  if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4667  {
4668  (void) ThrowMagickException(exception,GetMagickModule(),
4669  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4670  return(MagickFalse);
4671  }
4672  (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4673  edge_info->number_points*sizeof(*edge_info->points));
4674  }
4675  }
4676  return(MagickTrue);
4677 }
4678 
4679 static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4680 {
4681  assert(edge < (ssize_t) polygon_info->number_edges);
4682  polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4683  polygon_info->edges[edge].points);
4684  polygon_info->number_edges--;
4685  if (edge < (ssize_t) polygon_info->number_edges)
4686  (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4687  (size_t) (polygon_info->number_edges-edge)*sizeof(*polygon_info->edges));
4688  return(polygon_info->number_edges);
4689 }
4690 
4691 static double GetOpacityPixel(PolygonInfo *polygon_info,const double mid,
4692  const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4693  const ssize_t y,double *stroke_opacity)
4694 {
4695  double
4696  alpha,
4697  beta,
4698  distance,
4699  subpath_opacity;
4700 
4701  PointInfo
4702  delta;
4703 
4704  EdgeInfo
4705  *p;
4706 
4707  const PointInfo
4708  *q;
4709 
4710  ssize_t
4711  i;
4712 
4713  ssize_t
4714  j,
4715  winding_number;
4716 
4717  /*
4718  Compute fill & stroke opacity for this (x,y) point.
4719  */
4720  *stroke_opacity=0.0;
4721  subpath_opacity=0.0;
4722  p=polygon_info->edges;
4723  for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4724  {
4725  if ((double) y <= (p->bounds.y1-mid-0.5))
4726  break;
4727  if ((double) y > (p->bounds.y2+mid+0.5))
4728  {
4729  p--;
4730  (void) DestroyEdge(polygon_info,j--);
4731  continue;
4732  }
4733  if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4734  ((double) x > (p->bounds.x2+mid+0.5)))
4735  continue;
4736  i=(ssize_t) MagickMax((double) p->highwater,1.0);
4737  for ( ; i < (ssize_t) p->number_points; i++)
4738  {
4739  if ((double) y <= (p->points[i-1].y-mid-0.5))
4740  break;
4741  if ((double) y > (p->points[i].y+mid+0.5))
4742  continue;
4743  if (p->scanline != (double) y)
4744  {
4745  p->scanline=(double) y;
4746  p->highwater=(size_t) i;
4747  }
4748  /*
4749  Compute distance between a point and an edge.
4750  */
4751  q=p->points+i-1;
4752  delta.x=(q+1)->x-q->x;
4753  delta.y=(q+1)->y-q->y;
4754  beta=delta.x*(x-q->x)+delta.y*(y-q->y);
4755  if (beta <= 0.0)
4756  {
4757  delta.x=(double) x-q->x;
4758  delta.y=(double) y-q->y;
4759  distance=delta.x*delta.x+delta.y*delta.y;
4760  }
4761  else
4762  {
4763  alpha=delta.x*delta.x+delta.y*delta.y;
4764  if (beta >= alpha)
4765  {
4766  delta.x=(double) x-(q+1)->x;
4767  delta.y=(double) y-(q+1)->y;
4768  distance=delta.x*delta.x+delta.y*delta.y;
4769  }
4770  else
4771  {
4772  alpha=PerceptibleReciprocal(alpha);
4773  beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4774  distance=alpha*beta*beta;
4775  }
4776  }
4777  /*
4778  Compute stroke & subpath opacity.
4779  */
4780  beta=0.0;
4781  if (p->ghostline == MagickFalse)
4782  {
4783  alpha=mid+0.5;
4784  if ((*stroke_opacity < 1.0) &&
4785  (distance <= ((alpha+0.25)*(alpha+0.25))))
4786  {
4787  alpha=mid-0.5;
4788  if (distance <= ((alpha+0.25)*(alpha+0.25)))
4789  *stroke_opacity=1.0;
4790  else
4791  {
4792  beta=1.0;
4793  if (fabs(distance-1.0) >= MagickEpsilon)
4794  beta=sqrt((double) distance);
4795  alpha=beta-mid-0.5;
4796  if (*stroke_opacity < ((alpha-0.25)*(alpha-0.25)))
4797  *stroke_opacity=(alpha-0.25)*(alpha-0.25);
4798  }
4799  }
4800  }
4801  if ((fill == MagickFalse) || (distance > 1.0) || (subpath_opacity >= 1.0))
4802  continue;
4803  if (distance <= 0.0)
4804  {
4805  subpath_opacity=1.0;
4806  continue;
4807  }
4808  if (distance > 1.0)
4809  continue;
4810  if (fabs(beta) < MagickEpsilon)
4811  {
4812  beta=1.0;
4813  if (fabs(distance-1.0) >= MagickEpsilon)
4814  beta=sqrt(distance);
4815  }
4816  alpha=beta-1.0;
4817  if (subpath_opacity < (alpha*alpha))
4818  subpath_opacity=alpha*alpha;
4819  }
4820  }
4821  /*
4822  Compute fill opacity.
4823  */
4824  if (fill == MagickFalse)
4825  return(0.0);
4826  if (subpath_opacity >= 1.0)
4827  return(1.0);
4828  /*
4829  Determine winding number.
4830  */
4831  winding_number=0;
4832  p=polygon_info->edges;
4833  for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4834  {
4835  if ((double) y <= p->bounds.y1)
4836  break;
4837  if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4838  continue;
4839  if ((double) x > p->bounds.x2)
4840  {
4841  winding_number+=p->direction != 0 ? 1 : -1;
4842  continue;
4843  }
4844  i=(ssize_t) MagickMax((double) p->highwater,1.0);
4845  for ( ; i < (ssize_t) (p->number_points-1); i++)
4846  if ((double) y <= p->points[i].y)
4847  break;
4848  q=p->points+i-1;
4849  if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4850  winding_number+=p->direction != 0 ? 1 : -1;
4851  }
4852  if (fill_rule != NonZeroRule)
4853  {
4854  if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4855  return(1.0);
4856  }
4857  else
4858  if (MagickAbsoluteValue(winding_number) != 0)
4859  return(1.0);
4860  return(subpath_opacity);
4861 }
4862 
4863 static MagickBooleanType DrawPolygonPrimitive(Image *image,
4864  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
4865 {
4866  typedef struct _ExtentInfo
4867  {
4868  ssize_t
4869  x1,
4870  y1,
4871  x2,
4872  y2;
4873  } ExtentInfo;
4874 
4875  CacheView
4876  *image_view;
4877 
4878  const char
4879  *artifact;
4880 
4881  double
4882  mid;
4883 
4885  *exception;
4886 
4887  ExtentInfo
4888  poly_extent;
4889 
4890  MagickBooleanType
4891  fill,
4892  status;
4893 
4894  PolygonInfo
4895  **magick_restrict polygon_info;
4896 
4897  EdgeInfo
4898  *p;
4899 
4900  SegmentInfo
4901  bounds;
4902 
4903  size_t
4904  number_threads = 1;
4905 
4906  ssize_t
4907  i,
4908  y;
4909 
4910  assert(image != (Image *) NULL);
4911  assert(image->signature == MagickCoreSignature);
4912  assert(draw_info != (DrawInfo *) NULL);
4913  assert(draw_info->signature == MagickCoreSignature);
4914  assert(primitive_info != (PrimitiveInfo *) NULL);
4915  if (IsEventLogging() != MagickFalse)
4916  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4917  if (primitive_info->coordinates <= 1)
4918  return(MagickTrue);
4919  /*
4920  Compute bounding box.
4921  */
4922  polygon_info=AcquirePolygonTLS(draw_info,primitive_info,&image->exception);
4923  if (polygon_info == (PolygonInfo **) NULL)
4924  return(MagickFalse);
4925  if (draw_info->debug != MagickFalse)
4926  (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
4927  fill=(primitive_info->method == FillToBorderMethod) ||
4928  (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
4929  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
4930  bounds=polygon_info[0]->edges[0].bounds;
4931  artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
4932  if (IsStringTrue(artifact) != MagickFalse)
4933  (void) DrawBoundingRectangles(image,draw_info,polygon_info[0]);
4934  for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
4935  {
4936  p=polygon_info[0]->edges+i;
4937  if (p->bounds.x1 < bounds.x1)
4938  bounds.x1=p->bounds.x1;
4939  if (p->bounds.y1 < bounds.y1)
4940  bounds.y1=p->bounds.y1;
4941  if (p->bounds.x2 > bounds.x2)
4942  bounds.x2=p->bounds.x2;
4943  if (p->bounds.y2 > bounds.y2)
4944  bounds.y2=p->bounds.y2;
4945  }
4946  bounds.x1-=(mid+1.0);
4947  bounds.y1-=(mid+1.0);
4948  bounds.x2+=(mid+1.0);
4949  bounds.y2+=(mid+1.0);
4950  if ((bounds.x1 >= (double) image->columns) ||
4951  (bounds.y1 >= (double) image->rows) ||
4952  (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
4953  {
4954  polygon_info=DestroyPolygonTLS(polygon_info);
4955  return(MagickTrue); /* virtual polygon */
4956  }
4957  bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
4958  (double) image->columns-1.0 : bounds.x1;
4959  bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
4960  (double) image->rows-1.0 : bounds.y1;
4961  bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
4962  (double) image->columns-1.0 : bounds.x2;
4963  bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
4964  (double) image->rows-1.0 : bounds.y2;
4965  poly_extent.x1=CastDoubleToLong(ceil(bounds.x1-0.5));
4966  poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
4967  poly_extent.x2=CastDoubleToLong(floor(bounds.x2+0.5));
4968  poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
4969  number_threads=GetMagickNumberThreads(image,image,poly_extent.y2-
4970  poly_extent.y1+1,1);
4971  status=AcquirePolygonEdgesTLS(polygon_info,number_threads,&image->exception);
4972  if (status == MagickFalse)
4973  {
4974  polygon_info=DestroyPolygonTLS(polygon_info);
4975  return(status);
4976  }
4977  status=MagickTrue;
4978  exception=(&image->exception);
4979  image_view=AcquireAuthenticCacheView(image,exception);
4980  if ((primitive_info->coordinates == 1) ||
4981  (polygon_info[0]->number_edges == 0))
4982  {
4983  /*
4984  Draw point.
4985  */
4986 #if defined(MAGICKCORE_OPENMP_SUPPORT)
4987  #pragma omp parallel for schedule(static) shared(status) \
4988  num_threads(number_threads)
4989 #endif
4990  for (y=poly_extent.y1; y <= poly_extent.y2; y++)
4991  {
4992  MagickBooleanType
4993  sync;
4994 
4995  PixelPacket
4996  *magick_restrict q;
4997 
4998  ssize_t
4999  x;
5000 
5001  if (status == MagickFalse)
5002  continue;
5003  x=poly_extent.x1;
5004  q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5005  x+1),1,exception);
5006  if (q == (PixelPacket *) NULL)
5007  {
5008  status=MagickFalse;
5009  continue;
5010  }
5011  for ( ; x <= poly_extent.x2; x++)
5012  {
5013  if ((x == CastDoubleToLong(ceil(primitive_info->point.x-0.5))) &&
5014  (y == CastDoubleToLong(ceil(primitive_info->point.y-0.5))))
5015  (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,q);
5016  q++;
5017  }
5018  sync=SyncCacheViewAuthenticPixels(image_view,exception);
5019  if (sync == MagickFalse)
5020  status=MagickFalse;
5021  }
5022  image_view=DestroyCacheView(image_view);
5023  polygon_info=DestroyPolygonTLS(polygon_info);
5024  if (draw_info->debug != MagickFalse)
5025  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5026  " end draw-polygon");
5027  return(status);
5028  }
5029  /*
5030  Draw polygon or line.
5031  */
5032  poly_extent.y1=CastDoubleToLong(ceil(bounds.y1-0.5));
5033  poly_extent.y2=CastDoubleToLong(floor(bounds.y2+0.5));
5034 #if defined(MAGICKCORE_OPENMP_SUPPORT)
5035  #pragma omp parallel for schedule(static) shared(status) \
5036  num_threads(number_threads)
5037 #endif
5038  for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5039  {
5040  const int
5041  id = GetOpenMPThreadId();
5042 
5043  PixelPacket
5044  fill_color,
5045  stroke_color;
5046 
5047  PixelPacket
5048  *magick_restrict q;
5049 
5050  ssize_t
5051  x;
5052 
5053  if (status == MagickFalse)
5054  continue;
5055  q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5056  (poly_extent.x2-poly_extent.x1+1),1,exception);
5057  if (q == (PixelPacket *) NULL)
5058  {
5059  status=MagickFalse;
5060  continue;
5061  }
5062  for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5063  {
5064  double
5065  fill_opacity,
5066  stroke_opacity;
5067 
5068  /*
5069  Fill and/or stroke.
5070  */
5071  fill_opacity=GetOpacityPixel(polygon_info[id],mid,fill,
5072  draw_info->fill_rule,x,y,&stroke_opacity);
5073  if (draw_info->stroke_antialias == MagickFalse)
5074  {
5075  fill_opacity=fill_opacity > 0.5 ? 1.0 : 0.0;
5076  stroke_opacity=stroke_opacity > 0.5 ? 1.0 : 0.0;
5077  }
5078  (void) GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5079  &fill_color);
5080  fill_opacity=(double) (QuantumRange-fill_opacity*(QuantumRange-
5081  fill_color.opacity));
5082  MagickCompositeOver(&fill_color,(MagickRealType) fill_opacity,q,
5083  (MagickRealType) q->opacity,q);
5084  (void) GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,
5085  &stroke_color);
5086  stroke_opacity=(double) (QuantumRange-stroke_opacity*(QuantumRange-
5087  stroke_color.opacity));
5088  MagickCompositeOver(&stroke_color,(MagickRealType) stroke_opacity,q,
5089  (MagickRealType) q->opacity,q);
5090  q++;
5091  }
5092  if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5093  status=MagickFalse;
5094  }
5095  image_view=DestroyCacheView(image_view);
5096  polygon_info=DestroyPolygonTLS(polygon_info);
5097  if (draw_info->debug != MagickFalse)
5098  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5099  return(status);
5100 }
5101 ␌
5102 /*
5103 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5104 % %
5105 % %
5106 % %
5107 % D r a w P r i m i t i v e %
5108 % %
5109 % %
5110 % %
5111 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5112 %
5113 % DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5114 %
5115 % The format of the DrawPrimitive method is:
5116 %
5117 % MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5118 % PrimitiveInfo *primitive_info)
5119 %
5120 % A description of each parameter follows:
5121 %
5122 % o image: the image.
5123 %
5124 % o draw_info: the draw info.
5125 %
5126 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5127 %
5128 */
5129 static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5130 {
5131  const char
5132  *methods[] =
5133  {
5134  "point",
5135  "replace",
5136  "floodfill",
5137  "filltoborder",
5138  "reset",
5139  "?"
5140  };
5141 
5142  PointInfo
5143  p,
5144  q,
5145  point;
5146 
5147  ssize_t
5148  i,
5149  x;
5150 
5151  ssize_t
5152  coordinates,
5153  y;
5154 
5155  x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5156  y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5157  switch (primitive_info->primitive)
5158  {
5159  case PointPrimitive:
5160  {
5161  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5162  "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5163  methods[primitive_info->method]);
5164  return;
5165  }
5166  case ColorPrimitive:
5167  {
5168  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5169  "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5170  methods[primitive_info->method]);
5171  return;
5172  }
5173  case MattePrimitive:
5174  {
5175  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5176  "MattePrimitive %.20g,%.20g %s",(double) x,(double) y,
5177  methods[primitive_info->method]);
5178  return;
5179  }
5180  case TextPrimitive:
5181  {
5182  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5183  "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5184  return;
5185  }
5186  case ImagePrimitive:
5187  {
5188  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5189  "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5190  return;
5191  }
5192  default:
5193  break;
5194  }
5195  coordinates=0;
5196  p=primitive_info[0].point;
5197  q.x=(-1.0);
5198  q.y=(-1.0);
5199  for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5200  {
5201  point=primitive_info[i].point;
5202  if (coordinates <= 0)
5203  {
5204  coordinates=(ssize_t) primitive_info[i].coordinates;
5205  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5206  " begin open (%.20g)",(double) coordinates);
5207  p=point;
5208  }
5209  point=primitive_info[i].point;
5210  if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5211  (fabs(q.y-point.y) >= MagickEpsilon))
5212  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5213  " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5214  else
5215  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5216  " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5217  q=point;
5218  coordinates--;
5219  if (coordinates > 0)
5220  continue;
5221  if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5222  (fabs(p.y-point.y) >= MagickEpsilon))
5223  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5224  (double) coordinates);
5225  else
5226  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5227  (double) coordinates);
5228  }
5229 }
5230 
5231 MagickExport MagickBooleanType DrawPrimitive(Image *image,
5232  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5233 {
5234  CacheView
5235  *image_view;
5236 
5238  *exception;
5239 
5240  MagickStatusType
5241  status;
5242 
5243  ssize_t
5244  i,
5245  x;
5246 
5247  ssize_t
5248  y;
5249 
5250  if (draw_info->debug != MagickFalse)
5251  {
5252  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5253  " begin draw-primitive");
5254  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5255  " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5256  draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5257  draw_info->affine.tx,draw_info->affine.ty);
5258  }
5259  exception=(&image->exception);
5260  status=MagickTrue;
5261  if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5262  ((IsPixelGray(&draw_info->fill) == MagickFalse) ||
5263  (IsPixelGray(&draw_info->stroke) == MagickFalse)))
5264  status=SetImageColorspace(image,sRGBColorspace);
5265  if (draw_info->compliance == SVGCompliance)
5266  {
5267  status&=SetImageClipMask(image,draw_info->clipping_mask);
5268  status&=SetImageMask(image,draw_info->composite_mask);
5269  }
5270  x=CastDoubleToLong(ceil(primitive_info->point.x-0.5));
5271  y=CastDoubleToLong(ceil(primitive_info->point.y-0.5));
5272  image_view=AcquireAuthenticCacheView(image,exception);
5273  switch (primitive_info->primitive)
5274  {
5275  case ColorPrimitive:
5276  {
5277  switch (primitive_info->method)
5278  {
5279  case PointMethod:
5280  default:
5281  {
5282  PixelPacket
5283  *q;
5284 
5285  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5286  if (q == (PixelPacket *) NULL)
5287  break;
5288  (void) GetFillColor(draw_info,x,y,q);
5289  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5290  break;
5291  }
5292  case ReplaceMethod:
5293  {
5294  PixelPacket
5295  target;
5296 
5297  status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5298  for (y=0; y < (ssize_t) image->rows; y++)
5299  {
5300  PixelPacket
5301  *magick_restrict q;
5302 
5303  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5304  exception);
5305  if (q == (PixelPacket *) NULL)
5306  break;
5307  for (x=0; x < (ssize_t) image->columns; x++)
5308  {
5309  if (IsColorSimilar(image,q,&target) == MagickFalse)
5310  {
5311  q++;
5312  continue;
5313  }
5314  (void) GetFillColor(draw_info,x,y,q);
5315  q++;
5316  }
5317  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5318  if (status == MagickFalse)
5319  break;
5320  }
5321  break;
5322  }
5323  case FloodfillMethod:
5324  case FillToBorderMethod:
5325  {
5327  target;
5328 
5329  status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5330  if (primitive_info->method == FillToBorderMethod)
5331  {
5332  target.red=(MagickRealType) draw_info->border_color.red;
5333  target.green=(MagickRealType) draw_info->border_color.green;
5334  target.blue=(MagickRealType) draw_info->border_color.blue;
5335  }
5336  status&=FloodfillPaintImage(image,DefaultChannels,draw_info,&target,x,
5337  y,primitive_info->method == FloodfillMethod ? MagickFalse :
5338  MagickTrue);
5339  break;
5340  }
5341  case ResetMethod:
5342  {
5343  for (y=0; y < (ssize_t) image->rows; y++)
5344  {
5345  PixelPacket
5346  *magick_restrict q;
5347 
5348  ssize_t
5349  x;
5350 
5351  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5352  exception);
5353  if (q == (PixelPacket *) NULL)
5354  break;
5355  for (x=0; x < (ssize_t) image->columns; x++)
5356  {
5357  (void) GetFillColor(draw_info,x,y,q);
5358  q++;
5359  }
5360  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5361  if (status == MagickFalse)
5362  break;
5363  }
5364  break;
5365  }
5366  }
5367  break;
5368  }
5369  case MattePrimitive:
5370  {
5371  if (image->matte == MagickFalse)
5372  status&=SetImageAlphaChannel(image,OpaqueAlphaChannel);
5373  switch (primitive_info->method)
5374  {
5375  case PointMethod:
5376  default:
5377  {
5378  PixelPacket
5379  pixel;
5380 
5381  PixelPacket
5382  *q;
5383 
5384  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5385  if (q == (PixelPacket *) NULL)
5386  break;
5387  (void) GetFillColor(draw_info,x,y,&pixel);
5388  SetPixelOpacity(q,pixel.opacity);
5389  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5390  break;
5391  }
5392  case ReplaceMethod:
5393  {
5394  PixelPacket
5395  pixel,
5396  target;
5397 
5398  status&=GetOneCacheViewVirtualPixel(image_view,x,y,&target,exception);
5399  for (y=0; y < (ssize_t) image->rows; y++)
5400  {
5401  PixelPacket
5402  *magick_restrict q;
5403 
5404  ssize_t
5405  x;
5406 
5407  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5408  exception);
5409  if (q == (PixelPacket *) NULL)
5410  break;
5411  for (x=0; x < (ssize_t) image->columns; x++)
5412  {
5413  if (IsColorSimilar(image,q,&target) == MagickFalse)
5414  {
5415  q++;
5416  continue;
5417  }
5418  (void) GetFillColor(draw_info,x,y,&pixel);
5419  SetPixelOpacity(q,pixel.opacity);
5420  q++;
5421  }
5422  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5423  if (status == MagickFalse)
5424  break;
5425  }
5426  break;
5427  }
5428  case FloodfillMethod:
5429  case FillToBorderMethod:
5430  {
5432  target;
5433 
5434  status&=GetOneVirtualMagickPixel(image,x,y,&target,exception);
5435  if (primitive_info->method == FillToBorderMethod)
5436  {
5437  target.red=(MagickRealType) draw_info->border_color.red;
5438  target.green=(MagickRealType) draw_info->border_color.green;
5439  target.blue=(MagickRealType) draw_info->border_color.blue;
5440  }
5441  status&=FloodfillPaintImage(image,OpacityChannel,draw_info,&target,x,
5442  y,primitive_info->method == FloodfillMethod ? MagickFalse :
5443  MagickTrue);
5444  break;
5445  }
5446  case ResetMethod:
5447  {
5448  PixelPacket
5449  pixel;
5450 
5451  for (y=0; y < (ssize_t) image->rows; y++)
5452  {
5453  PixelPacket
5454  *magick_restrict q;
5455 
5456  ssize_t
5457  x;
5458 
5459  q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5460  exception);
5461  if (q == (PixelPacket *) NULL)
5462  break;
5463  for (x=0; x < (ssize_t) image->columns; x++)
5464  {
5465  (void) GetFillColor(draw_info,x,y,&pixel);
5466  SetPixelOpacity(q,pixel.opacity);
5467  q++;
5468  }
5469  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5470  if (status == MagickFalse)
5471  break;
5472  }
5473  break;
5474  }
5475  }
5476  break;
5477  }
5478  case ImagePrimitive:
5479  {
5480  AffineMatrix
5481  affine;
5482 
5483  char
5484  composite_geometry[MaxTextExtent];
5485 
5486  Image
5487  *composite_image,
5488  *composite_images;
5489 
5490  ImageInfo
5491  *clone_info;
5492 
5494  geometry;
5495 
5496  ssize_t
5497  x1,
5498  y1;
5499 
5500  if (primitive_info->text == (char *) NULL)
5501  break;
5502  clone_info=AcquireImageInfo();
5503  composite_images=(Image *) NULL;
5504  if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5505  composite_images=ReadInlineImage(clone_info,primitive_info->text,
5506  &image->exception);
5507  else
5508  if (*primitive_info->text != '\0')
5509  {
5510  MagickStatusType
5511  path_status;
5512 
5513  struct stat
5514  attributes;
5515 
5516  /*
5517  Read composite image.
5518  */
5519  (void) CopyMagickString(clone_info->filename,primitive_info->text,
5520  MagickPathExtent);
5521  (void) SetImageInfo(clone_info,1,exception);
5522  (void) CopyMagickString(clone_info->filename,primitive_info->text,
5523  MagickPathExtent);
5524  if (clone_info->size != (char *) NULL)
5525  clone_info->size=DestroyString(clone_info->size);
5526  if (clone_info->extract != (char *) NULL)
5527  clone_info->extract=DestroyString(clone_info->extract);
5528  path_status=GetPathAttributes(clone_info->filename,&attributes);
5529  if (path_status != MagickFalse)
5530  {
5531  if (S_ISCHR(attributes.st_mode) == 0)
5532  composite_images=ReadImage(clone_info,exception);
5533  else
5534  (void) ThrowMagickException(exception,GetMagickModule(),
5535  FileOpenError,"UnableToOpenFile","`%s'",
5536  clone_info->filename);
5537  }
5538  else
5539  if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5540  (LocaleCompare(clone_info->magick,"http") != 0) &&
5541  (LocaleCompare(clone_info->magick,"https") != 0) &&
5542  (LocaleCompare(clone_info->magick,"vid") != 0))
5543  composite_images=ReadImage(clone_info,exception);
5544  else
5545  (void) ThrowMagickException(exception,GetMagickModule(),
5546  FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5547  }
5548  clone_info=DestroyImageInfo(clone_info);
5549  if (composite_images == (Image *) NULL)
5550  {
5551  status=0;
5552  break;
5553  }
5554  composite_image=RemoveFirstImageFromList(&composite_images);
5555  composite_images=DestroyImageList(composite_images);
5556  (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5557  NULL,(void *) NULL);
5558  x1=CastDoubleToLong(ceil(primitive_info[1].point.x-0.5));
5559  y1=CastDoubleToLong(ceil(primitive_info[1].point.y-0.5));
5560  if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5561  ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5562  {
5563  char
5564  geometry[MaxTextExtent];
5565 
5566  /*
5567  Resize image.
5568  */
5569  (void) FormatLocaleString(geometry,MaxTextExtent,"%gx%g!",
5570  primitive_info[1].point.x,primitive_info[1].point.y);
5571  composite_image->filter=image->filter;
5572  status&=TransformImage(&composite_image,(char *) NULL,geometry);
5573  }
5574  if (composite_image->matte == MagickFalse)
5575  status&=SetImageAlphaChannel(composite_image,OpaqueAlphaChannel);
5576  if (draw_info->opacity != OpaqueOpacity)
5577  status&=SetImageOpacity(composite_image,draw_info->opacity);
5578  SetGeometry(image,&geometry);
5579  image->gravity=draw_info->gravity;
5580  geometry.x=x;
5581  geometry.y=y;
5582  (void) FormatLocaleString(composite_geometry,MaxTextExtent,
5583  "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5584  composite_image->rows,(double) geometry.x,(double) geometry.y);
5585  (void) ParseGravityGeometry(image,composite_geometry,&geometry,
5586  &image->exception);
5587  affine=draw_info->affine;
5588  affine.tx=(double) geometry.x;
5589  affine.ty=(double) geometry.y;
5590  composite_image->interpolate=image->interpolate;
5591  if ((draw_info->compose == OverCompositeOp) ||
5592  (draw_info->compose == SrcOverCompositeOp))
5593  status&=DrawAffineImage(image,composite_image,&affine);
5594  else
5595  status&=CompositeImage(image,draw_info->compose,composite_image,
5596  geometry.x,geometry.y);
5597  composite_image=DestroyImage(composite_image);
5598  break;
5599  }
5600  case PointPrimitive:
5601  {
5602  PixelPacket
5603  fill_color;
5604 
5605  PixelPacket
5606  *q;
5607 
5608  if ((y < 0) || (y >= (ssize_t) image->rows))
5609  break;
5610  if ((x < 0) || (x >= (ssize_t) image->columns))
5611  break;
5612  q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5613  if (q == (PixelPacket *) NULL)
5614  break;
5615  (void) GetFillColor(draw_info,x,y,&fill_color);
5616  MagickCompositeOver(&fill_color,(MagickRealType) fill_color.opacity,q,
5617  (MagickRealType) q->opacity,q);
5618  status&=SyncCacheViewAuthenticPixels(image_view,exception);
5619  break;
5620  }
5621  case TextPrimitive:
5622  {
5623  char
5624  geometry[MaxTextExtent];
5625 
5626  DrawInfo
5627  *clone_info;
5628 
5629  if (primitive_info->text == (char *) NULL)
5630  break;
5631  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5632  (void) CloneString(&clone_info->text,primitive_info->text);
5633  (void) FormatLocaleString(geometry,MaxTextExtent,"%+f%+f",
5634  primitive_info->point.x,primitive_info->point.y);
5635  (void) CloneString(&clone_info->geometry,geometry);
5636  status&=AnnotateImage(image,clone_info);
5637  clone_info=DestroyDrawInfo(clone_info);
5638  break;
5639  }
5640  default:
5641  {
5642  double
5643  mid,
5644  scale;
5645 
5646  DrawInfo
5647  *clone_info;
5648 
5649  if (IsEventLogging() != MagickFalse)
5650  LogPrimitiveInfo(primitive_info);
5651  scale=ExpandAffine(&draw_info->affine);
5652  if ((draw_info->dash_pattern != (double *) NULL) &&
5653  (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5654  (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5655  (draw_info->stroke.opacity != (Quantum) TransparentOpacity))
5656  {
5657  /*
5658  Draw dash polygon.
5659  */
5660  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5661  clone_info->stroke_width=0.0;
5662  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5663  status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5664  clone_info=DestroyDrawInfo(clone_info);
5665  if (status != MagickFalse)
5666  status&=DrawDashPolygon(draw_info,primitive_info,image);
5667  break;
5668  }
5669  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5670  if ((mid > 1.0) &&
5671  ((draw_info->stroke.opacity != (Quantum) TransparentOpacity) ||
5672  (draw_info->stroke_pattern != (Image *) NULL)))
5673  {
5674  double
5675  x,
5676  y;
5677 
5678  MagickBooleanType
5679  closed_path;
5680 
5681  /*
5682  Draw strokes while respecting line cap/join attributes.
5683  */
5684  closed_path=primitive_info[0].closed_subpath;
5685  i=(ssize_t) primitive_info[0].coordinates;
5686  x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5687  y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5688  if ((x < MagickEpsilon) && (y < MagickEpsilon))
5689  closed_path=MagickTrue;
5690  if ((((draw_info->linecap == RoundCap) ||
5691  (closed_path != MagickFalse)) &&
5692  (draw_info->linejoin == RoundJoin)) ||
5693  (primitive_info[i].primitive != UndefinedPrimitive))
5694  {
5695  status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5696  break;
5697  }
5698  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5699  clone_info->stroke_width=0.0;
5700  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5701  status&=DrawPolygonPrimitive(image,clone_info,primitive_info);
5702  clone_info=DestroyDrawInfo(clone_info);
5703  if (status != MagickFalse)
5704  status&=DrawStrokePolygon(image,draw_info,primitive_info);
5705  break;
5706  }
5707  status&=DrawPolygonPrimitive(image,draw_info,primitive_info);
5708  break;
5709  }
5710  }
5711  image_view=DestroyCacheView(image_view);
5712  if (draw_info->compliance == SVGCompliance)
5713  {
5714  status&=SetImageClipMask(image,(Image *) NULL);
5715  status&=SetImageMask(image,(Image *) NULL);
5716  }
5717  if (draw_info->debug != MagickFalse)
5718  (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5719  return(status != 0 ? MagickTrue : MagickFalse);
5720 }
5721 ␌
5722 /*
5723 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5724 % %
5725 % %
5726 % %
5727 + D r a w S t r o k e P o l y g o n %
5728 % %
5729 % %
5730 % %
5731 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5732 %
5733 % DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5734 % the image while respecting the line cap and join attributes.
5735 %
5736 % The format of the DrawStrokePolygon method is:
5737 %
5738 % MagickBooleanType DrawStrokePolygon(Image *image,
5739 % const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5740 %
5741 % A description of each parameter follows:
5742 %
5743 % o image: the image.
5744 %
5745 % o draw_info: the draw info.
5746 %
5747 % o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5748 %
5749 %
5750 */
5751 
5752 static MagickBooleanType DrawRoundLinecap(Image *image,
5753  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5754 {
5756  linecap[5];
5757 
5758  ssize_t
5759  i;
5760 
5761  for (i=0; i < 4; i++)
5762  linecap[i]=(*primitive_info);
5763  linecap[0].coordinates=4;
5764  linecap[1].point.x+=2.0*MagickEpsilon;
5765  linecap[2].point.x+=2.0*MagickEpsilon;
5766  linecap[2].point.y+=2.0*MagickEpsilon;
5767  linecap[3].point.y+=2.0*MagickEpsilon;
5768  linecap[4].primitive=UndefinedPrimitive;
5769  return(DrawPolygonPrimitive(image,draw_info,linecap));
5770 }
5771 
5772 static MagickBooleanType DrawStrokePolygon(Image *image,
5773  const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5774 {
5775  DrawInfo
5776  *clone_info;
5777 
5778  MagickBooleanType
5779  closed_path;
5780 
5781  MagickStatusType
5782  status;
5783 
5785  *stroke_polygon;
5786 
5787  const PrimitiveInfo
5788  *p,
5789  *q;
5790 
5791  /*
5792  Draw stroked polygon.
5793  */
5794  if (draw_info->debug != MagickFalse)
5795  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5796  " begin draw-stroke-polygon");
5797  clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5798  clone_info->fill=draw_info->stroke;
5799  if (clone_info->fill_pattern != (Image *) NULL)
5800  clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5801  if (clone_info->stroke_pattern != (Image *) NULL)
5802  clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5803  MagickTrue,&clone_info->stroke_pattern->exception);
5804  clone_info->stroke.opacity=(Quantum) TransparentOpacity;
5805  clone_info->stroke_width=0.0;
5806  clone_info->fill_rule=NonZeroRule;
5807  status=MagickTrue;
5808  for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=p->coordinates)
5809  {
5810  if (p->coordinates == 1)
5811  continue;
5812  stroke_polygon=TraceStrokePolygon(draw_info,p,&image->exception);
5813  if (stroke_polygon == (PrimitiveInfo *) NULL)
5814  {
5815  status=0;
5816  break;
5817  }
5818  status&=DrawPolygonPrimitive(image,clone_info,stroke_polygon);
5819  stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5820  if (status == 0)
5821  break;
5822  q=p+p->coordinates-1;
5823  closed_path=p->closed_subpath;
5824  if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5825  {
5826  status&=DrawRoundLinecap(image,draw_info,p);
5827  status&=DrawRoundLinecap(image,draw_info,q);
5828  }
5829  }
5830  clone_info=DestroyDrawInfo(clone_info);
5831  if (draw_info->debug != MagickFalse)
5832  (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5833  " end draw-stroke-polygon");
5834  return(status != 0 ? MagickTrue : MagickFalse);
5835 }
5836 ␌
5837 /*
5838 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5839 % %
5840 % %
5841 % %
5842 % G e t A f f i n e M a t r i x %
5843 % %
5844 % %
5845 % %
5846 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5847 %
5848 % GetAffineMatrix() returns an AffineMatrix initialized to the identity
5849 % matrix.
5850 %
5851 % The format of the GetAffineMatrix method is:
5852 %
5853 % void GetAffineMatrix(AffineMatrix *affine_matrix)
5854 %
5855 % A description of each parameter follows:
5856 %
5857 % o affine_matrix: the affine matrix.
5858 %
5859 */
5860 MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
5861 {
5862  assert(affine_matrix != (AffineMatrix *) NULL);
5863  if (IsEventLogging() != MagickFalse)
5864  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5865  (void) memset(affine_matrix,0,sizeof(*affine_matrix));
5866  affine_matrix->sx=1.0;
5867  affine_matrix->sy=1.0;
5868 }
5869 ␌
5870 /*
5871 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5872 % %
5873 % %
5874 % %
5875 + G e t D r a w I n f o %
5876 % %
5877 % %
5878 % %
5879 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5880 %
5881 % GetDrawInfo() initializes draw_info to default values from image_info.
5882 %
5883 % The format of the GetDrawInfo method is:
5884 %
5885 % void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5886 %
5887 % A description of each parameter follows:
5888 %
5889 % o image_info: the image info..
5890 %
5891 % o draw_info: the draw info.
5892 %
5893 */
5894 MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
5895 {
5896  char
5897  *next_token;
5898 
5899  const char
5900  *option;
5901 
5903  *exception;
5904 
5905  ImageInfo
5906  *clone_info;
5907 
5908  /*
5909  Initialize draw attributes.
5910  */
5911  assert(draw_info != (DrawInfo *) NULL);
5912  if (IsEventLogging() != MagickFalse)
5913  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
5914  (void) memset(draw_info,0,sizeof(*draw_info));
5915  clone_info=CloneImageInfo(image_info);
5916  GetAffineMatrix(&draw_info->affine);
5917  exception=AcquireExceptionInfo();
5918  (void) QueryColorDatabase("#000F",&draw_info->fill,exception);
5919  (void) QueryColorDatabase("#FFF0",&draw_info->stroke,exception);
5920  draw_info->stroke_antialias=clone_info->antialias;
5921  draw_info->stroke_width=1.0;
5922  draw_info->fill_rule=EvenOddRule;
5923  draw_info->opacity=OpaqueOpacity;
5924  draw_info->fill_opacity=OpaqueOpacity;
5925  draw_info->stroke_opacity=OpaqueOpacity;
5926  draw_info->linecap=ButtCap;
5927  draw_info->linejoin=MiterJoin;
5928  draw_info->miterlimit=10;
5929  draw_info->decorate=NoDecoration;
5930  if (clone_info->font != (char *) NULL)
5931  draw_info->font=AcquireString(clone_info->font);
5932  if (clone_info->density != (char *) NULL)
5933  draw_info->density=AcquireString(clone_info->density);
5934  draw_info->text_antialias=clone_info->antialias;
5935  draw_info->pointsize=12.0;
5936  if (fabs(clone_info->pointsize) >= MagickEpsilon)
5937  draw_info->pointsize=clone_info->pointsize;
5938  draw_info->undercolor.opacity=(Quantum) TransparentOpacity;
5939  draw_info->border_color=clone_info->border_color;
5940  draw_info->compose=OverCompositeOp;
5941  if (clone_info->server_name != (char *) NULL)
5942  draw_info->server_name=AcquireString(clone_info->server_name);
5943  draw_info->render=MagickTrue;
5944  draw_info->clip_path=MagickFalse;
5945  draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
5946  MagickTrue : MagickFalse;
5947  option=GetImageOption(clone_info,"direction");
5948  if (option != (const char *) NULL)
5949  draw_info->direction=(DirectionType) ParseCommandOption(
5950  MagickDirectionOptions,MagickFalse,option);
5951  else
5952  draw_info->direction=UndefinedDirection;
5953  option=GetImageOption(clone_info,"encoding");
5954  if (option != (const char *) NULL)
5955  (void) CloneString(&draw_info->encoding,option);
5956  option=GetImageOption(clone_info,"family");
5957  if (option != (const char *) NULL)
5958  (void) CloneString(&draw_info->family,option);
5959  option=GetImageOption(clone_info,"fill");
5960  if (option != (const char *) NULL)
5961  (void) QueryColorDatabase(option,&draw_info->fill,exception);
5962  option=GetImageOption(clone_info,"gravity");
5963  if (option != (const char *) NULL)
5964  draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
5965  MagickFalse,option);
5966  option=GetImageOption(clone_info,"interline-spacing");
5967  if (option != (const char *) NULL)
5968  draw_info->interline_spacing=GetDrawValue(option,&next_token);
5969  option=GetImageOption(clone_info,"interword-spacing");
5970  if (option != (const char *) NULL)
5971  draw_info->interword_spacing=GetDrawValue(option,&next_token);
5972  option=GetImageOption(clone_info,"kerning");
5973  if (option != (const char *) NULL)
5974  draw_info->kerning=GetDrawValue(option,&next_token);
5975  option=GetImageOption(clone_info,"stroke");
5976  if (option != (const char *) NULL)
5977  (void) QueryColorDatabase(option,&draw_info->stroke,exception);
5978  option=GetImageOption(clone_info,"strokewidth");
5979  if (option != (const char *) NULL)
5980  draw_info->stroke_width=GetDrawValue(option,&next_token);
5981  option=GetImageOption(clone_info,"style");
5982  if (option != (const char *) NULL)
5983  draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
5984  MagickFalse,option);
5985  option=GetImageOption(clone_info,"undercolor");
5986  if (option != (const char *) NULL)
5987  (void) QueryColorDatabase(option,&draw_info->undercolor,exception);
5988  option=GetImageOption(clone_info,"weight");
5989  if (option != (const char *) NULL)
5990  {
5991  ssize_t
5992  weight;
5993 
5994  weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
5995  if (weight == -1)
5996  weight=(ssize_t) StringToUnsignedLong(option);
5997  draw_info->weight=(size_t) weight;
5998  }
5999  exception=DestroyExceptionInfo(exception);
6000  draw_info->signature=MagickCoreSignature;
6001  clone_info=DestroyImageInfo(clone_info);
6002 }
6003 ␌
6004 /*
6005 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6006 % %
6007 % %
6008 % %
6009 + P e r m u t a t e %
6010 % %
6011 % %
6012 % %
6013 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6014 %
6015 % Permutate() returns the permuation of the (n,k).
6016 %
6017 % The format of the Permutate method is:
6018 %
6019 % void Permutate(ssize_t n,ssize_t k)
6020 %
6021 % A description of each parameter follows:
6022 %
6023 % o n:
6024 %
6025 % o k:
6026 %
6027 %
6028 */
6029 static inline double Permutate(const ssize_t n,const ssize_t k)
6030 {
6031  double
6032  r;
6033 
6034  ssize_t
6035  i;
6036 
6037  r=1.0;
6038  for (i=k+1; i <= n; i++)
6039  r*=i;
6040  for (i=1; i <= (n-k); i++)
6041  r/=i;
6042  return(r);
6043 }
6044 ␌
6045 /*
6046 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6047 % %
6048 % %
6049 % %
6050 + T r a c e P r i m i t i v e %
6051 % %
6052 % %
6053 % %
6054 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6055 %
6056 % TracePrimitive is a collection of methods for generating graphic
6057 % primitives such as arcs, ellipses, paths, etc.
6058 %
6059 */
6060 
6061 static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6062  const PointInfo end,const PointInfo degrees)
6063 {
6064  PointInfo
6065  center,
6066  radius;
6067 
6068  center.x=0.5*(end.x+start.x);
6069  center.y=0.5*(end.y+start.y);
6070  radius.x=fabs(center.x-start.x);
6071  radius.y=fabs(center.y-start.y);
6072  return(TraceEllipse(mvg_info,center,radius,degrees));
6073 }
6074 
6075 static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6076  const PointInfo end,const PointInfo arc,const double angle,
6077  const MagickBooleanType large_arc,const MagickBooleanType sweep)
6078 {
6079  double
6080  alpha,
6081  beta,
6082  delta,
6083  factor,
6084  gamma,
6085  theta;
6086 
6087  MagickStatusType
6088  status;
6089 
6090  PointInfo
6091  center,
6092  points[3],
6093  radii;
6094 
6095  double
6096  cosine,
6097  sine;
6098 
6100  *primitive_info;
6101 
6103  *p;
6104 
6105  ssize_t
6106  i;
6107 
6108  size_t
6109  arc_segments;
6110 
6111  ssize_t
6112  offset;
6113 
6114  offset=mvg_info->offset;
6115  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6116  primitive_info->coordinates=0;
6117  if ((fabs(start.x-end.x) < MagickEpsilon) &&
6118  (fabs(start.y-end.y) < MagickEpsilon))
6119  return(TracePoint(primitive_info,end));
6120  radii.x=fabs(arc.x);
6121  radii.y=fabs(arc.y);
6122  if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6123  return(TraceLine(primitive_info,start,end));
6124  cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6125  sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6126  center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6127  center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6128  delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6129  (radii.y*radii.y);
6130  if (delta < MagickEpsilon)
6131  return(TraceLine(primitive_info,start,end));
6132  if (delta > 1.0)
6133  {
6134  radii.x*=sqrt((double) delta);
6135  radii.y*=sqrt((double) delta);
6136  }
6137  points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6138  points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6139  points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6140  points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6141  alpha=points[1].x-points[0].x;
6142  beta=points[1].y-points[0].y;
6143  if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6144  return(TraceLine(primitive_info,start,end));
6145  factor=PerceptibleReciprocal(alpha*alpha+beta*beta)-0.25;
6146  if (factor <= 0.0)
6147  factor=0.0;
6148  else
6149  {
6150  factor=sqrt((double) factor);
6151  if (sweep == large_arc)
6152  factor=(-factor);
6153  }
6154  center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6155  center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6156  alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6157  theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6158  if ((theta < 0.0) && (sweep != MagickFalse))
6159  theta+=2.0*MagickPI;
6160  else
6161  if ((theta > 0.0) && (sweep == MagickFalse))
6162  theta-=2.0*MagickPI;
6163  arc_segments=(size_t) CastDoubleToLong(ceil(fabs((double) (theta/(0.5*
6164  MagickPI+MagickEpsilon)))));
6165  p=primitive_info;
6166  status=MagickTrue;
6167  for (i=0; i < (ssize_t) arc_segments; i++)
6168  {
6169  beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6170  gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6171  sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6172  sin(fmod((double) beta,DegreesToRadians(360.0)));
6173  points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6174  arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6175  (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6176  points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6177  arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6178  (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6179  points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6180  theta/arc_segments),DegreesToRadians(360.0))));
6181  points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6182  theta/arc_segments),DegreesToRadians(360.0))));
6183  points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6184  (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6185  points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6186  (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6187  p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6188  p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6189  (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6190  points[0].y);
6191  (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6192  points[0].y);
6193  (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6194  points[1].y);
6195  (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6196  points[1].y);
6197  (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6198  points[2].y);
6199  (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6200  points[2].y);
6201  if (i == (ssize_t) (arc_segments-1))
6202  (p+3)->point=end;
6203  status&=TraceBezier(mvg_info,4);
6204  if (status == 0)
6205  break;
6206  p=(*mvg_info->primitive_info)+mvg_info->offset;
6207  mvg_info->offset+=p->coordinates;
6208  p+=p->coordinates;
6209  }
6210  if (status == 0)
6211  return(MagickFalse);
6212  mvg_info->offset=offset;
6213  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6214  primitive_info->coordinates=(size_t) (p-primitive_info);
6215  primitive_info->closed_subpath=MagickFalse;
6216  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6217  {
6218  p->primitive=primitive_info->primitive;
6219  p--;
6220  }
6221  return(MagickTrue);
6222 }
6223 
6224 static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6225  const size_t number_coordinates)
6226 {
6227  double
6228  alpha,
6229  *coefficients,
6230  weight;
6231 
6232  PointInfo
6233  end,
6234  point,
6235  *points;
6236 
6238  *primitive_info;
6239 
6241  *p;
6242 
6243  ssize_t
6244  i,
6245  j;
6246 
6247  size_t
6248  control_points,
6249  quantum;
6250 
6251  /*
6252  Allocate coefficients.
6253  */
6254  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6255  quantum=number_coordinates;
6256  for (i=0; i < (ssize_t) number_coordinates; i++)
6257  {
6258  for (j=i+1; j < (ssize_t) number_coordinates; j++)
6259  {
6260  alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6261  if (alpha > (double) MAGICK_SSIZE_MAX)
6262  {
6263  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6264  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6265  return(MagickFalse);
6266  }
6267  if (alpha > (double) quantum)
6268  quantum=(size_t) alpha;
6269  alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6270  if (alpha > (double) MAGICK_SSIZE_MAX)
6271  {
6272  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6273  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6274  return(MagickFalse);
6275  }
6276  if (alpha > (double) quantum)
6277  quantum=(size_t) alpha;
6278  }
6279  }
6280  coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6281  sizeof(*coefficients));
6282  quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6283  points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6284  sizeof(*points));
6285  if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6286  {
6287  if (points != (PointInfo *) NULL)
6288  points=(PointInfo *) RelinquishMagickMemory(points);
6289  if (coefficients != (double *) NULL)
6290  coefficients=(double *) RelinquishMagickMemory(coefficients);
6291  (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6292  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6293  return(MagickFalse);
6294  }
6295  control_points=quantum*number_coordinates;
6296  if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6297  {
6298  points=(PointInfo *) RelinquishMagickMemory(points);
6299  coefficients=(double *) RelinquishMagickMemory(coefficients);
6300  return(MagickFalse);
6301  }
6302  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6303  /*
6304  Compute bezier points.
6305  */
6306  end=primitive_info[number_coordinates-1].point;
6307  for (i=0; i < (ssize_t) number_coordinates; i++)
6308  coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6309  weight=0.0;
6310  for (i=0; i < (ssize_t) control_points; i++)
6311  {
6312  p=primitive_info;
6313  point.x=0.0;
6314  point.y=0.0;
6315  alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6316  for (j=0; j < (ssize_t) number_coordinates; j++)
6317  {
6318  point.x+=alpha*coefficients[j]*p->point.x;
6319  point.y+=alpha*coefficients[j]*p->point.y;
6320  alpha*=weight/(1.0-weight);
6321  p++;
6322  }
6323  points[i]=point;
6324  weight+=1.0/control_points;
6325  }
6326  /*
6327  Bezier curves are just short segmented polys.
6328  */
6329  p=primitive_info;
6330  for (i=0; i < (ssize_t) control_points; i++)
6331  {
6332  if (TracePoint(p,points[i]) == MagickFalse)
6333  {
6334  points=(PointInfo *) RelinquishMagickMemory(points);
6335  coefficients=(double *) RelinquishMagickMemory(coefficients);
6336  return(MagickFalse);
6337  }
6338  p+=p->coordinates;
6339  }
6340  if (TracePoint(p,end) == MagickFalse)
6341  {
6342  points=(PointInfo *) RelinquishMagickMemory(points);
6343  coefficients=(double *) RelinquishMagickMemory(coefficients);
6344  return(MagickFalse);
6345  }
6346  p+=p->coordinates;
6347  primitive_info->coordinates=(size_t) (p-primitive_info);
6348  primitive_info->closed_subpath=MagickFalse;
6349  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6350  {
6351  p->primitive=primitive_info->primitive;
6352  p--;
6353  }
6354  points=(PointInfo *) RelinquishMagickMemory(points);
6355  coefficients=(double *) RelinquishMagickMemory(coefficients);
6356  return(MagickTrue);
6357 }
6358 
6359 static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6360  const PointInfo end)
6361 {
6362  double
6363  alpha,
6364  beta,
6365  radius;
6366 
6367  PointInfo
6368  offset,
6369  degrees;
6370 
6371  alpha=end.x-start.x;
6372  beta=end.y-start.y;
6373  radius=hypot((double) alpha,(double) beta);
6374  offset.x=(double) radius;
6375  offset.y=(double) radius;
6376  degrees.x=0.0;
6377  degrees.y=360.0;
6378  return(TraceEllipse(mvg_info,start,offset,degrees));
6379 }
6380 
6381 static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6382  const PointInfo radii,const PointInfo arc)
6383 {
6384  double
6385  coordinates,
6386  delta,
6387  step,
6388  x,
6389  y;
6390 
6391  PointInfo
6392  angle,
6393  point;
6394 
6396  *primitive_info;
6397 
6399  *p;
6400 
6401  ssize_t
6402  i;
6403 
6404  /*
6405  Ellipses are just short segmented polys.
6406  */
6407  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6408  primitive_info->coordinates=0;
6409  if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6410  return(MagickTrue);
6411  delta=2.0*PerceptibleReciprocal(MagickMax(radii.x,radii.y));
6412  step=MagickPI/8.0;
6413  if ((delta >= 0.0) && (delta < (MagickPI/8.0)))
6414  step=MagickPI/4.0/(MagickPI*PerceptibleReciprocal(delta)/2.0);
6415  angle.x=DegreesToRadians(arc.x);
6416  y=arc.y;
6417  while (y < arc.x)
6418  y+=360.0;
6419  angle.y=DegreesToRadians(y);
6420  coordinates=ceil((angle.y-angle.x)/step+1.0);
6421  if (CheckPrimitiveExtent(mvg_info,coordinates) == MagickFalse)
6422  return(MagickFalse);
6423  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6424  for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6425  {
6426  point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6427  point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6428  if (TracePoint(p,point) == MagickFalse)
6429  return(MagickFalse);
6430  p+=p->coordinates;
6431  }
6432  point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6433  point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6434  if (TracePoint(p,point) == MagickFalse)
6435  return(MagickFalse);
6436  p+=p->coordinates;
6437  primitive_info->coordinates=(size_t) (p-primitive_info);
6438  primitive_info->closed_subpath=MagickFalse;
6439  x=fabs(primitive_info[0].point.x-
6440  primitive_info[primitive_info->coordinates-1].point.x);
6441  y=fabs(primitive_info[0].point.y-
6442  primitive_info[primitive_info->coordinates-1].point.y);
6443  if ((x < MagickEpsilon) && (y < MagickEpsilon))
6444  primitive_info->closed_subpath=MagickTrue;
6445  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6446  {
6447  p->primitive=primitive_info->primitive;
6448  p--;
6449  }
6450  return(MagickTrue);
6451 }
6452 
6453 static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6454  const PointInfo start,const PointInfo end)
6455 {
6456  if (TracePoint(primitive_info,start) == MagickFalse)
6457  return(MagickFalse);
6458  if ((fabs(start.x-end.x) < MagickEpsilon) &&
6459  (fabs(start.y-end.y) < MagickEpsilon))
6460  {
6461  primitive_info->primitive=PointPrimitive;
6462  primitive_info->coordinates=1;
6463  return(MagickTrue);
6464  }
6465  if (TracePoint(primitive_info+1,end) == MagickFalse)
6466  return(MagickFalse);
6467  (primitive_info+1)->primitive=primitive_info->primitive;
6468  primitive_info->coordinates=2;
6469  primitive_info->closed_subpath=MagickFalse;
6470  return(MagickTrue);
6471 }
6472 
6473 static ssize_t TracePath(Image *image,MVGInfo *mvg_info,const char *path)
6474 {
6475  char
6476  *next_token,
6477  token[MaxTextExtent] = "";
6478 
6479  const char
6480  *p;
6481 
6482  double
6483  x,
6484  y;
6485 
6486  int
6487  attribute,
6488  last_attribute;
6489 
6490  MagickStatusType
6491  status;
6492 
6493  PointInfo
6494  end = {0.0, 0.0},
6495  points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6496  point = {0.0, 0.0},
6497  start = {0.0, 0.0};
6498 
6500  *primitive_info;
6501 
6502  PrimitiveType
6503  primitive_type;
6504 
6506  *q;
6507 
6508  ssize_t
6509  i;
6510 
6511  size_t
6512  number_coordinates,
6513  z_count;
6514 
6515  ssize_t
6516  subpath_offset;
6517 
6518  subpath_offset=mvg_info->offset;
6519  primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6520  status=MagickTrue;
6521  attribute=0;
6522  number_coordinates=0;
6523  z_count=0;
6524  *token='\0';
6525  primitive_type=primitive_info->primitive;
6526  q=primitive_info;
6527  for (p=path; *p != '\0'; )
6528  {
6529  if (status == MagickFalse)
6530  break;
6531  while (isspace((int) ((unsigned char) *p)) != 0)
6532  p++;
6533  if (*p == '\0')
6534  break;
6535  last_attribute=attribute;
6536  attribute=(int) (*p++);
6537  switch (attribute)
6538  {
6539  case 'a':
6540  case 'A':
6541  {
6542  double
6543  angle = 0.0;
6544 
6545  MagickBooleanType
6546  large_arc = MagickFalse,
6547  sweep = MagickFalse;
6548 
6549  PointInfo
6550  arc = {0.0, 0.0};
6551 
6552  /*
6553  Elliptical arc.
6554  */
6555  do
6556  {
6557  (void) GetNextToken(p,&p,MaxTextExtent,token);
6558  if (*token == ',')
6559  (void) GetNextToken(p,&p,MaxTextExtent,token);
6560  arc.x=GetDrawValue(token,&next_token);
6561  if (token == next_token)
6562  ThrowPointExpectedException(image,token);
6563  (void) GetNextToken(p,&p,MaxTextExtent,token);
6564  if (*token == ',')
6565  (void) GetNextToken(p,&p,MaxTextExtent,token);
6566  arc.y=GetDrawValue(token,&next_token);
6567  if (token == next_token)
6568  ThrowPointExpectedException(image,token);
6569  (void) GetNextToken(p,&p,MaxTextExtent,token);
6570  if (*token == ',')
6571  (void) GetNextToken(p,&p,MaxTextExtent,token);
6572  angle=GetDrawValue(token,&next_token);
6573  if (token == next_token)
6574  ThrowPointExpectedException(image,token);
6575  (void) GetNextToken(p,&p,MaxTextExtent,token);
6576  if (*token == ',')
6577  (void) GetNextToken(p,&p,MaxTextExtent,token);
6578  large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6579  (void) GetNextToken(p,&p,MaxTextExtent,token);
6580  if (*token == ',')
6581  (void) GetNextToken(p,&p,MaxTextExtent,token);
6582  sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6583  if (*token == ',')
6584  (void) GetNextToken(p,&p,MaxTextExtent,token);
6585  (void) GetNextToken(p,&p,MaxTextExtent,token);
6586  if (*token == ',')
6587  (void) GetNextToken(p,&p,MaxTextExtent,token);
6588  x=GetDrawValue(token,&next_token);
6589  if (token == next_token)
6590  ThrowPointExpectedException(image,token);
6591  (void) GetNextToken(p,&p,MaxTextExtent,token);
6592  if (*token == ',')
6593  (void) GetNextToken(p,&p,MaxTextExtent,token);
6594  y=GetDrawValue(token,&next_token);
6595  if (token == next_token)
6596  ThrowPointExpectedException(image,token);
6597  end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6598  end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6599  status&=TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep);
6600  q=(*mvg_info->primitive_info)+mvg_info->offset;
6601  mvg_info->offset+=q->coordinates;
6602  q+=q->coordinates;
6603  point=end;
6604  while (isspace((int) ((unsigned char) *p)) != 0)
6605  p++;
6606  if (*p == ',')
6607  p++;
6608  } while (IsPoint(p) != MagickFalse);
6609  break;
6610  }
6611  case 'c':
6612  case 'C':
6613  {
6614  /*
6615  Cubic Bézier curve.
6616  */
6617  do
6618  {
6619  points[0]=point;
6620  for (i=1; i < 4; i++)
6621  {
6622  (void) GetNextToken(p,&p,MaxTextExtent,token);
6623  if (*token == ',')
6624  (void) GetNextToken(p,&p,MaxTextExtent,token);
6625  x=GetDrawValue(token,&next_token);
6626  if (token == next_token)
6627  ThrowPointExpectedException(image,token);
6628  (void) GetNextToken(p,&p,MaxTextExtent,token);
6629  if (*token == ',')
6630  (void) GetNextToken(p,&p,MaxTextExtent,token);
6631  y=GetDrawValue(token,&next_token);
6632  if (token == next_token)
6633  ThrowPointExpectedException(image,token);
6634  end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6635  end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6636  points[i]=end;
6637  }
6638  for (i=0; i < 4; i++)
6639  (q+i)->point=points[i];
6640  if (TraceBezier(mvg_info,4) == MagickFalse)
6641  return(-1);
6642  q=(*mvg_info->primitive_info)+mvg_info->offset;
6643  mvg_info->offset+=q->coordinates;
6644  q+=q->coordinates;
6645  point=end;
6646  while (isspace((int) ((unsigned char) *p)) != 0)
6647  p++;
6648  if (*p == ',')
6649  p++;
6650  } while (IsPoint(p) != MagickFalse);
6651  break;
6652  }
6653  case 'H':
6654  case 'h':
6655  {
6656  do
6657  {
6658  (void) GetNextToken(p,&p,MaxTextExtent,token);
6659  if (*token == ',')
6660  (void) GetNextToken(p,&p,MaxTextExtent,token);
6661  x=GetDrawValue(token,&next_token);
6662  if (token == next_token)
6663  ThrowPointExpectedException(image,token);
6664  point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6665  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6666  return(-1);
6667  q=(*mvg_info->primitive_info)+mvg_info->offset;
6668  if (TracePoint(q,point) == MagickFalse)
6669  return(-1);
6670  mvg_info->offset+=q->coordinates;
6671  q+=q->coordinates;
6672  while (isspace((int) ((unsigned char) *p)) != 0)
6673  p++;
6674  if (*p == ',')
6675  p++;
6676  } while (IsPoint(p) != MagickFalse);
6677  break;
6678  }
6679  case 'l':
6680  case 'L':
6681  {
6682  /*
6683  Line to.
6684  */
6685  do
6686  {
6687  (void) GetNextToken(p,&p,MaxTextExtent,token);
6688  if (*token == ',')
6689  (void) GetNextToken(p,&p,MaxTextExtent,token);
6690  x=GetDrawValue(token,&next_token);
6691  if (token == next_token)
6692  ThrowPointExpectedException(image,token);
6693  (void) GetNextToken(p,&p,MaxTextExtent,token);
6694  if (*token == ',')
6695  (void) GetNextToken(p,&p,MaxTextExtent,token);
6696  y=GetDrawValue(token,&next_token);
6697  if (token == next_token)
6698  ThrowPointExpectedException(image,token);
6699  point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6700  point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6701  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6702  return(-1);
6703  q=(*mvg_info->primitive_info)+mvg_info->offset;
6704  if (TracePoint(q,point) == MagickFalse)
6705  return(-1);
6706  mvg_info->offset+=q->coordinates;
6707  q+=q->coordinates;
6708  while (isspace((int) ((unsigned char) *p)) != 0)
6709  p++;
6710  if (*p == ',')
6711  p++;
6712  } while (IsPoint(p) != MagickFalse);
6713  break;
6714  }
6715  case 'M':
6716  case 'm':
6717  {
6718  /*
6719  Move to.
6720  */
6721  if (mvg_info->offset != subpath_offset)
6722  {
6723  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6724  primitive_info->coordinates=(size_t) (q-primitive_info);
6725  number_coordinates+=primitive_info->coordinates;
6726  primitive_info=q;
6727  subpath_offset=mvg_info->offset;
6728  }
6729  i=0;
6730  do
6731  {
6732  (void) GetNextToken(p,&p,MaxTextExtent,token);
6733  if (*token == ',')
6734  (void) GetNextToken(p,&p,MaxTextExtent,token);
6735  x=GetDrawValue(token,&next_token);
6736  if (token == next_token)
6737  ThrowPointExpectedException(image,token);
6738  (void) GetNextToken(p,&p,MaxTextExtent,token);
6739  if (*token == ',')
6740  (void) GetNextToken(p,&p,MaxTextExtent,token);
6741  y=GetDrawValue(token,&next_token);
6742  if (token == next_token)
6743  ThrowPointExpectedException(image,token);
6744  point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6745  point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6746  if (i == 0)
6747  start=point;
6748  i++;
6749  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6750  return(-1);
6751  q=(*mvg_info->primitive_info)+mvg_info->offset;
6752  if (TracePoint(q,point) == MagickFalse)
6753  return(-1);
6754  mvg_info->offset+=q->coordinates;
6755  q+=q->coordinates;
6756  while (isspace((int) ((unsigned char) *p)) != 0)
6757  p++;
6758  if (*p == ',')
6759  p++;
6760  } while (IsPoint(p) != MagickFalse);
6761  break;
6762  }
6763  case 'q':
6764  case 'Q':
6765  {
6766  /*
6767  Quadratic Bézier curve.
6768  */
6769  do
6770  {
6771  points[0]=point;
6772  for (i=1; i < 3; i++)
6773  {
6774  (void) GetNextToken(p,&p,MaxTextExtent,token);
6775  if (*token == ',')
6776  (void) GetNextToken(p,&p,MaxTextExtent,token);
6777  x=GetDrawValue(token,&next_token);
6778  if (token == next_token)
6779  ThrowPointExpectedException(image,token);
6780  (void) GetNextToken(p,&p,MaxTextExtent,token);
6781  if (*token == ',')
6782  (void) GetNextToken(p,&p,MaxTextExtent,token);
6783  y=GetDrawValue(token,&next_token);
6784  if (token == next_token)
6785  ThrowPointExpectedException(image,token);
6786  if (*p == ',')
6787  p++;
6788  end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6789  end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6790  points[i]=end;
6791  }
6792  for (i=0; i < 3; i++)
6793  (q+i)->point=points[i];
6794  if (TraceBezier(mvg_info,3) == MagickFalse)
6795  return(-1);
6796  q=(*mvg_info->primitive_info)+mvg_info->offset;
6797  mvg_info->offset+=q->coordinates;
6798  q+=q->coordinates;
6799  point=end;
6800  while (isspace((int) ((unsigned char) *p)) != 0)
6801  p++;
6802  if (*p == ',')
6803  p++;
6804  } while (IsPoint(p) != MagickFalse);
6805  break;
6806  }
6807  case 's':
6808  case 'S':
6809  {
6810  /*
6811  Cubic Bézier curve.
6812  */
6813  do
6814  {
6815  points[0]=points[3];
6816  points[1].x=2.0*points[3].x-points[2].x;
6817  points[1].y=2.0*points[3].y-points[2].y;
6818  for (i=2; i < 4; i++)
6819  {
6820  (void) GetNextToken(p,&p,MaxTextExtent,token);
6821  if (*token == ',')
6822  (void) GetNextToken(p,&p,MaxTextExtent,token);
6823  x=GetDrawValue(token,&next_token);
6824  if (token == next_token)
6825  ThrowPointExpectedException(image,token);
6826  (void) GetNextToken(p,&p,MaxTextExtent,token);
6827  if (*token == ',')
6828  (void) GetNextToken(p,&p,MaxTextExtent,token);
6829  y=GetDrawValue(token,&next_token);
6830  if (token == next_token)
6831  ThrowPointExpectedException(image,token);
6832  if (*p == ',')
6833  p++;
6834  end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6835  end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6836  points[i]=end;
6837  }
6838  if (strchr("CcSs",last_attribute) == (char *) NULL)
6839  {
6840  points[0]=point;
6841  points[1]=point;
6842  }
6843  for (i=0; i < 4; i++)
6844  (q+i)->point=points[i];
6845  if (TraceBezier(mvg_info,4) == MagickFalse)
6846  return(-1);
6847  q=(*mvg_info->primitive_info)+mvg_info->offset;
6848  mvg_info->offset+=q->coordinates;
6849  q+=q->coordinates;
6850  point=end;
6851  last_attribute=attribute;
6852  while (isspace((int) ((unsigned char) *p)) != 0)
6853  p++;
6854  if (*p == ',')
6855  p++;
6856  } while (IsPoint(p) != MagickFalse);
6857  break;
6858  }
6859  case 't':
6860  case 'T':
6861  {
6862  /*
6863  Quadratic Bézier curve.
6864  */
6865  do
6866  {
6867  points[0]=points[2];
6868  points[1].x=2.0*points[2].x-points[1].x;
6869  points[1].y=2.0*points[2].y-points[1].y;
6870  for (i=2; i < 3; i++)
6871  {
6872  (void) GetNextToken(p,&p,MaxTextExtent,token);
6873  if (*token == ',')
6874  (void) GetNextToken(p,&p,MaxTextExtent,token);
6875  x=GetDrawValue(token,&next_token);
6876  if (token == next_token)
6877  ThrowPointExpectedException(image,token);
6878  (void) GetNextToken(p,&p,MaxTextExtent,token);
6879  if (*token == ',')
6880  (void) GetNextToken(p,&p,MaxTextExtent,token);
6881  y=GetDrawValue(token,&next_token);
6882  if (token == next_token)
6883  ThrowPointExpectedException(image,token);
6884  end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
6885  end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
6886  points[i]=end;
6887  }
6888  if (status == MagickFalse)
6889  break;
6890  if (strchr("QqTt",last_attribute) == (char *) NULL)
6891  {
6892  points[0]=point;
6893  points[1]=point;
6894  }
6895  for (i=0; i < 3; i++)
6896  (q+i)->point=points[i];
6897  if (TraceBezier(mvg_info,3) == MagickFalse)
6898  return(-1);
6899  q=(*mvg_info->primitive_info)+mvg_info->offset;
6900  mvg_info->offset+=q->coordinates;
6901  q+=q->coordinates;
6902  point=end;
6903  last_attribute=attribute;
6904  while (isspace((int) ((unsigned char) *p)) != 0)
6905  p++;
6906  if (*p == ',')
6907  p++;
6908  } while (IsPoint(p) != MagickFalse);
6909  break;
6910  }
6911  case 'v':
6912  case 'V':
6913  {
6914  /*
6915  Line to.
6916  */
6917  do
6918  {
6919  (void) GetNextToken(p,&p,MaxTextExtent,token);
6920  if (*token == ',')
6921  (void) GetNextToken(p,&p,MaxTextExtent,token);
6922  y=GetDrawValue(token,&next_token);
6923  if (token == next_token)
6924  ThrowPointExpectedException(image,token);
6925  point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
6926  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6927  return(-1);
6928  q=(*mvg_info->primitive_info)+mvg_info->offset;
6929  if (TracePoint(q,point) == MagickFalse)
6930  return(-1);
6931  mvg_info->offset+=q->coordinates;
6932  q+=q->coordinates;
6933  while (isspace((int) ((unsigned char) *p)) != 0)
6934  p++;
6935  if (*p == ',')
6936  p++;
6937  } while (IsPoint(p) != MagickFalse);
6938  break;
6939  }
6940  case 'z':
6941  case 'Z':
6942  {
6943  /*
6944  Close path.
6945  */
6946  point=start;
6947  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6948  return(-1);
6949  q=(*mvg_info->primitive_info)+mvg_info->offset;
6950  if (TracePoint(q,point) == MagickFalse)
6951  return(-1);
6952  mvg_info->offset+=q->coordinates;
6953  q+=q->coordinates;
6954  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6955  primitive_info->coordinates=(size_t) (q-primitive_info);
6956  primitive_info->closed_subpath=MagickTrue;
6957  number_coordinates+=primitive_info->coordinates;
6958  primitive_info=q;
6959  subpath_offset=mvg_info->offset;
6960  z_count++;
6961  break;
6962  }
6963  default:
6964  {
6965  ThrowPointExpectedException(image,token);
6966  break;
6967  }
6968  }
6969  }
6970  if (status == MagickFalse)
6971  return(-1);
6972  primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6973  primitive_info->coordinates=(size_t) (q-primitive_info);
6974  number_coordinates+=primitive_info->coordinates;
6975  for (i=0; i < (ssize_t) number_coordinates; i++)
6976  {
6977  q--;
6978  q->primitive=primitive_type;
6979  if (z_count > 1)
6980  q->method=FillToBorderMethod;
6981  }
6982  q=primitive_info;
6983  return((ssize_t) number_coordinates);
6984 }
6985 
6986 static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
6987  const PointInfo start,const PointInfo end)
6988 {
6989  PointInfo
6990  point;
6991 
6993  *p;
6994 
6995  ssize_t
6996  i;
6997 
6998  p=primitive_info;
6999  if (TracePoint(p,start) == MagickFalse)
7000  return(MagickFalse);
7001  p+=p->coordinates;
7002  point.x=start.x;
7003  point.y=end.y;
7004  if (TracePoint(p,point) == MagickFalse)
7005  return(MagickFalse);
7006  p+=p->coordinates;
7007  if (TracePoint(p,end) == MagickFalse)
7008  return(MagickFalse);
7009  p+=p->coordinates;
7010  point.x=end.x;
7011  point.y=start.y;
7012  if (TracePoint(p,point) == MagickFalse)
7013  return(MagickFalse);
7014  p+=p->coordinates;
7015  if (TracePoint(p,start) == MagickFalse)
7016  return(MagickFalse);
7017  p+=p->coordinates;
7018  primitive_info->coordinates=(size_t) (p-primitive_info);
7019  primitive_info->closed_subpath=MagickTrue;
7020  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7021  {
7022  p->primitive=primitive_info->primitive;
7023  p--;
7024  }
7025  return(MagickTrue);
7026 }
7027 
7028 static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7029  const PointInfo start,const PointInfo end,PointInfo arc)
7030 {
7031  PointInfo
7032  degrees,
7033  point,
7034  segment;
7035 
7037  *primitive_info;
7038 
7040  *p;
7041 
7042  ssize_t
7043  i;
7044 
7045  ssize_t
7046  offset;
7047 
7048  offset=mvg_info->offset;
7049  segment.x=fabs(end.x-start.x);
7050  segment.y=fabs(end.y-start.y);
7051  if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7052  {
7053  (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7054  return(MagickTrue);
7055  }
7056  if (arc.x > (0.5*segment.x))
7057  arc.x=0.5*segment.x;
7058  if (arc.y > (0.5*segment.y))
7059  arc.y=0.5*segment.y;
7060  point.x=start.x+segment.x-arc.x;
7061  point.y=start.y+arc.y;
7062  degrees.x=270.0;
7063  degrees.y=360.0;
7064  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7065  return(MagickFalse);
7066  p=(*mvg_info->primitive_info)+mvg_info->offset;
7067  mvg_info->offset+=p->coordinates;
7068  point.x=start.x+segment.x-arc.x;
7069  point.y=start.y+segment.y-arc.y;
7070  degrees.x=0.0;
7071  degrees.y=90.0;
7072  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7073  return(MagickFalse);
7074  p=(*mvg_info->primitive_info)+mvg_info->offset;
7075  mvg_info->offset+=p->coordinates;
7076  point.x=start.x+arc.x;
7077  point.y=start.y+segment.y-arc.y;
7078  degrees.x=90.0;
7079  degrees.y=180.0;
7080  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7081  return(MagickFalse);
7082  p=(*mvg_info->primitive_info)+mvg_info->offset;
7083  mvg_info->offset+=p->coordinates;
7084  point.x=start.x+arc.x;
7085  point.y=start.y+arc.y;
7086  degrees.x=180.0;
7087  degrees.y=270.0;
7088  if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7089  return(MagickFalse);
7090  p=(*mvg_info->primitive_info)+mvg_info->offset;
7091  mvg_info->offset+=p->coordinates;
7092  if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7093  return(MagickFalse);
7094  p=(*mvg_info->primitive_info)+mvg_info->offset;
7095  if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7096  return(MagickFalse);
7097  p+=p->coordinates;
7098  mvg_info->offset=offset;
7099  primitive_info=(*mvg_info->primitive_info)+offset;
7100  primitive_info->coordinates=(size_t) (p-primitive_info);
7101  primitive_info->closed_subpath=MagickTrue;
7102  for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7103  {
7104  p->primitive=primitive_info->primitive;
7105  p--;
7106  }
7107  return(MagickTrue);
7108 }
7109 
7110 static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7111  const size_t number_vertices,const double offset)
7112 {
7113  double
7114  distance;
7115 
7116  double
7117  dx,
7118  dy;
7119 
7120  ssize_t
7121  i;
7122 
7123  ssize_t
7124  j;
7125 
7126  dx=0.0;
7127  dy=0.0;
7128  for (i=1; i < (ssize_t) number_vertices; i++)
7129  {
7130  dx=primitive_info[0].point.x-primitive_info[i].point.x;
7131  dy=primitive_info[0].point.y-primitive_info[i].point.y;
7132  if ((fabs((double) dx) >= MagickEpsilon) ||
7133  (fabs((double) dy) >= MagickEpsilon))
7134  break;
7135  }
7136  if (i == (ssize_t) number_vertices)
7137  i=(ssize_t) number_vertices-1L;
7138  distance=hypot((double) dx,(double) dy);
7139  primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7140  dx*(distance+offset)/distance);
7141  primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7142  dy*(distance+offset)/distance);
7143  for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7144  {
7145  dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7146  dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7147  if ((fabs((double) dx) >= MagickEpsilon) ||
7148  (fabs((double) dy) >= MagickEpsilon))
7149  break;
7150  }
7151  distance=hypot((double) dx,(double) dy);
7152  primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7153  dx*(distance+offset)/distance);
7154  primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7155  dy*(distance+offset)/distance);
7156  return(MagickTrue);
7157 }
7158 
7159 static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7160  const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7161 {
7162 #define MaxStrokePad (6*BezierQuantum+360)
7163 #define CheckPathExtent(pad_p,pad_q) \
7164 { \
7165  if ((pad_p) > MaxBezierCoordinates) \
7166  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7167  else \
7168  if ((ssize_t) (p+(pad_p)) >= (ssize_t) extent_p) \
7169  { \
7170  if (~extent_p < (pad_p)) \
7171  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7172  else \
7173  { \
7174  extent_p+=(pad_p); \
7175  stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7176  MaxStrokePad,sizeof(*stroke_p)); \
7177  } \
7178  } \
7179  if ((pad_q) > MaxBezierCoordinates) \
7180  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7181  else \
7182  if ((ssize_t) (q+(pad_q)) >= (ssize_t) extent_q) \
7183  { \
7184  if (~extent_q < (pad_q)) \
7185  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7186  else \
7187  { \
7188  extent_q+=(pad_q); \
7189  stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7190  MaxStrokePad,sizeof(*stroke_q)); \
7191  } \
7192  } \
7193  if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7194  { \
7195  if (stroke_p != (PointInfo *) NULL) \
7196  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7197  if (stroke_q != (PointInfo *) NULL) \
7198  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7199  polygon_primitive=(PrimitiveInfo *) \
7200  RelinquishMagickMemory(polygon_primitive); \
7201  (void) ThrowMagickException(exception,GetMagickModule(), \
7202  ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7203  return((PrimitiveInfo *) NULL); \
7204  } \
7205 }
7206 
7207  typedef struct _StrokeSegment
7208  {
7209  double
7210  p,
7211  q;
7212  } StrokeSegment;
7213 
7214  double
7215  delta_theta,
7216  dot_product,
7217  mid,
7218  miterlimit;
7219 
7220  MagickBooleanType
7221  closed_path;
7222 
7223  PointInfo
7224  box_p[5],
7225  box_q[5],
7226  center,
7227  offset,
7228  *stroke_p,
7229  *stroke_q;
7230 
7232  *polygon_primitive,
7233  *stroke_polygon;
7234 
7235  ssize_t
7236  i;
7237 
7238  size_t
7239  arc_segments,
7240  extent_p,
7241  extent_q,
7242  number_vertices;
7243 
7244  ssize_t
7245  j,
7246  n,
7247  p,
7248  q;
7249 
7250  StrokeSegment
7251  dx = {0.0, 0.0},
7252  dy = {0.0, 0.0},
7253  inverse_slope = {0.0, 0.0},
7254  slope = {0.0, 0.0},
7255  theta = {0.0, 0.0};
7256 
7257  /*
7258  Allocate paths.
7259  */
7260  number_vertices=primitive_info->coordinates;
7261  polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7262  number_vertices+2UL,sizeof(*polygon_primitive));
7263  if (polygon_primitive == (PrimitiveInfo *) NULL)
7264  {
7265  (void) ThrowMagickException(exception,GetMagickModule(),
7266  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7267  return((PrimitiveInfo *) NULL);
7268  }
7269  (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7270  sizeof(*polygon_primitive));
7271  offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7272  offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7273  closed_path=(fabs(offset.x) < MagickEpsilon) &&
7274  (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7275  if (((draw_info->linejoin == RoundJoin) ||
7276  (draw_info->linejoin == MiterJoin)) && (closed_path != MagickFalse))
7277  {
7278  polygon_primitive[number_vertices]=primitive_info[1];
7279  number_vertices++;
7280  }
7281  polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7282  /*
7283  Compute the slope for the first line segment, p.
7284  */
7285  dx.p=0.0;
7286  dy.p=0.0;
7287  for (n=1; n < (ssize_t) number_vertices; n++)
7288  {
7289  dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7290  dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7291  if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7292  break;
7293  }
7294  if (n == (ssize_t) number_vertices)
7295  {
7296  if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7297  {
7298  /*
7299  Zero length subpath.
7300  */
7301  stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7302  sizeof(*stroke_polygon));
7303  stroke_polygon[0]=polygon_primitive[0];
7304  stroke_polygon[0].coordinates=0;
7305  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7306  polygon_primitive);
7307  return(stroke_polygon);
7308  }
7309  n=(ssize_t) number_vertices-1L;
7310  }
7311  extent_p=2*number_vertices;
7312  extent_q=2*number_vertices;
7313  stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7314  sizeof(*stroke_p));
7315  stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7316  sizeof(*stroke_q));
7317  if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7318  {
7319  if (stroke_p != (PointInfo *) NULL)
7320  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7321  if (stroke_q != (PointInfo *) NULL)
7322  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7323  polygon_primitive=(PrimitiveInfo *)
7324  RelinquishMagickMemory(polygon_primitive);
7325  (void) ThrowMagickException(exception,GetMagickModule(),
7326  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7327  return((PrimitiveInfo *) NULL);
7328  }
7329  slope.p=0.0;
7330  inverse_slope.p=0.0;
7331  if (fabs(dx.p) < MagickEpsilon)
7332  {
7333  if (dx.p >= 0.0)
7334  slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7335  else
7336  slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7337  }
7338  else
7339  if (fabs(dy.p) < MagickEpsilon)
7340  {
7341  if (dy.p >= 0.0)
7342  inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7343  else
7344  inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7345  }
7346  else
7347  {
7348  slope.p=dy.p/dx.p;
7349  inverse_slope.p=(-1.0*PerceptibleReciprocal(slope.p));
7350  }
7351  mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7352  miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7353  if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7354  (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7355  offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7356  offset.y=(double) (offset.x*inverse_slope.p);
7357  if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7358  {
7359  box_p[0].x=polygon_primitive[0].point.x-offset.x;
7360  box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7361  box_p[1].x=polygon_primitive[n].point.x-offset.x;
7362  box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7363  box_q[0].x=polygon_primitive[0].point.x+offset.x;
7364  box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7365  box_q[1].x=polygon_primitive[n].point.x+offset.x;
7366  box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7367  }
7368  else
7369  {
7370  box_p[0].x=polygon_primitive[0].point.x+offset.x;
7371  box_p[0].y=polygon_primitive[0].point.y+offset.y;
7372  box_p[1].x=polygon_primitive[n].point.x+offset.x;
7373  box_p[1].y=polygon_primitive[n].point.y+offset.y;
7374  box_q[0].x=polygon_primitive[0].point.x-offset.x;
7375  box_q[0].y=polygon_primitive[0].point.y-offset.y;
7376  box_q[1].x=polygon_primitive[n].point.x-offset.x;
7377  box_q[1].y=polygon_primitive[n].point.y-offset.y;
7378  }
7379  /*
7380  Create strokes for the line join attribute: bevel, miter, round.
7381  */
7382  p=0;
7383  q=0;
7384  stroke_q[p++]=box_q[0];
7385  stroke_p[q++]=box_p[0];
7386  for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7387  {
7388  /*
7389  Compute the slope for this line segment, q.
7390  */
7391  dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7392  dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7393  dot_product=dx.q*dx.q+dy.q*dy.q;
7394  if (dot_product < 0.25)
7395  continue;
7396  slope.q=0.0;
7397  inverse_slope.q=0.0;
7398  if (fabs(dx.q) < MagickEpsilon)
7399  {
7400  if (dx.q >= 0.0)
7401  slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7402  else
7403  slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7404  }
7405  else
7406  if (fabs(dy.q) < MagickEpsilon)
7407  {
7408  if (dy.q >= 0.0)
7409  inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7410  else
7411  inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7412  }
7413  else
7414  {
7415  slope.q=dy.q/dx.q;
7416  inverse_slope.q=(-1.0*PerceptibleReciprocal(slope.q));
7417  }
7418  offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7419  offset.y=(double) (offset.x*inverse_slope.q);
7420  dot_product=dy.q*offset.x-dx.q*offset.y;
7421  if (dot_product > 0.0)
7422  {
7423  box_p[2].x=polygon_primitive[n].point.x-offset.x;
7424  box_p[2].y=polygon_primitive[n].point.y-offset.y;
7425  box_p[3].x=polygon_primitive[i].point.x-offset.x;
7426  box_p[3].y=polygon_primitive[i].point.y-offset.y;
7427  box_q[2].x=polygon_primitive[n].point.x+offset.x;
7428  box_q[2].y=polygon_primitive[n].point.y+offset.y;
7429  box_q[3].x=polygon_primitive[i].point.x+offset.x;
7430  box_q[3].y=polygon_primitive[i].point.y+offset.y;
7431  }
7432  else
7433  {
7434  box_p[2].x=polygon_primitive[n].point.x+offset.x;
7435  box_p[2].y=polygon_primitive[n].point.y+offset.y;
7436  box_p[3].x=polygon_primitive[i].point.x+offset.x;
7437  box_p[3].y=polygon_primitive[i].point.y+offset.y;
7438  box_q[2].x=polygon_primitive[n].point.x-offset.x;
7439  box_q[2].y=polygon_primitive[n].point.y-offset.y;
7440  box_q[3].x=polygon_primitive[i].point.x-offset.x;
7441  box_q[3].y=polygon_primitive[i].point.y-offset.y;
7442  }
7443  if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7444  {
7445  box_p[4]=box_p[1];
7446  box_q[4]=box_q[1];
7447  }
7448  else
7449  {
7450  box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7451  box_p[3].y)/(slope.p-slope.q));
7452  box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7453  box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7454  box_q[3].y)/(slope.p-slope.q));
7455  box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7456  }
7457  CheckPathExtent(MaxStrokePad,MaxStrokePad);
7458  dot_product=dx.q*dy.p-dx.p*dy.q;
7459  if (dot_product <= 0.0)
7460  switch (draw_info->linejoin)
7461  {
7462  case BevelJoin:
7463  {
7464  stroke_q[q++]=box_q[1];
7465  stroke_q[q++]=box_q[2];
7466  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7467  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7468  if (dot_product <= miterlimit)
7469  stroke_p[p++]=box_p[4];
7470  else
7471  {
7472  stroke_p[p++]=box_p[1];
7473  stroke_p[p++]=box_p[2];
7474  }
7475  break;
7476  }
7477  case MiterJoin:
7478  {
7479  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7480  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7481  if (dot_product <= miterlimit)
7482  {
7483  stroke_q[q++]=box_q[4];
7484  stroke_p[p++]=box_p[4];
7485  }
7486  else
7487  {
7488  stroke_q[q++]=box_q[1];
7489  stroke_q[q++]=box_q[2];
7490  stroke_p[p++]=box_p[1];
7491  stroke_p[p++]=box_p[2];
7492  }
7493  break;
7494  }
7495  case RoundJoin:
7496  {
7497  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7498  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7499  if (dot_product <= miterlimit)
7500  stroke_p[p++]=box_p[4];
7501  else
7502  {
7503  stroke_p[p++]=box_p[1];
7504  stroke_p[p++]=box_p[2];
7505  }
7506  center=polygon_primitive[n].point;
7507  theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7508  theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7509  if (theta.q < theta.p)
7510  theta.q+=2.0*MagickPI;
7511  arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.q-
7512  theta.p)/(2.0*sqrt(PerceptibleReciprocal(mid))))));
7513  CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7514  stroke_q[q].x=box_q[1].x;
7515  stroke_q[q].y=box_q[1].y;
7516  q++;
7517  for (j=1; j < (ssize_t) arc_segments; j++)
7518  {
7519  delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7520  stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7521  (theta.p+delta_theta),DegreesToRadians(360.0))));
7522  stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7523  (theta.p+delta_theta),DegreesToRadians(360.0))));
7524  q++;
7525  }
7526  stroke_q[q++]=box_q[2];
7527  break;
7528  }
7529  default:
7530  break;
7531  }
7532  else
7533  switch (draw_info->linejoin)
7534  {
7535  case BevelJoin:
7536  {
7537  stroke_p[p++]=box_p[1];
7538  stroke_p[p++]=box_p[2];
7539  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7540  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7541  if (dot_product <= miterlimit)
7542  stroke_q[q++]=box_q[4];
7543  else
7544  {
7545  stroke_q[q++]=box_q[1];
7546  stroke_q[q++]=box_q[2];
7547  }
7548  break;
7549  }
7550  case MiterJoin:
7551  {
7552  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7553  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7554  if (dot_product <= miterlimit)
7555  {
7556  stroke_q[q++]=box_q[4];
7557  stroke_p[p++]=box_p[4];
7558  }
7559  else
7560  {
7561  stroke_q[q++]=box_q[1];
7562  stroke_q[q++]=box_q[2];
7563  stroke_p[p++]=box_p[1];
7564  stroke_p[p++]=box_p[2];
7565  }
7566  break;
7567  }
7568  case RoundJoin:
7569  {
7570  dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7571  (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7572  if (dot_product <= miterlimit)
7573  stroke_q[q++]=box_q[4];
7574  else
7575  {
7576  stroke_q[q++]=box_q[1];
7577  stroke_q[q++]=box_q[2];
7578  }
7579  center=polygon_primitive[n].point;
7580  theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7581  theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7582  if (theta.p < theta.q)
7583  theta.p+=2.0*MagickPI;
7584  arc_segments=(size_t) CastDoubleToLong(ceil((double) ((theta.p-
7585  theta.q)/(2.0*sqrt((double) (PerceptibleReciprocal(mid)))))));
7586  CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7587  stroke_p[p++]=box_p[1];
7588  for (j=1; j < (ssize_t) arc_segments; j++)
7589  {
7590  delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7591  stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7592  (theta.p+delta_theta),DegreesToRadians(360.0))));
7593  stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7594  (theta.p+delta_theta),DegreesToRadians(360.0))));
7595  p++;
7596  }
7597  stroke_p[p++]=box_p[2];
7598  break;
7599  }
7600  default:
7601  break;
7602  }
7603  slope.p=slope.q;
7604  inverse_slope.p=inverse_slope.q;
7605  box_p[0]=box_p[2];
7606  box_p[1]=box_p[3];
7607  box_q[0]=box_q[2];
7608  box_q[1]=box_q[3];
7609  dx.p=dx.q;
7610  dy.p=dy.q;
7611  n=i;
7612  }
7613  stroke_p[p++]=box_p[1];
7614  stroke_q[q++]=box_q[1];
7615  /*
7616  Trace stroked polygon.
7617  */
7618  stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7619  (p+q+2UL*closed_path+2UL),sizeof(*stroke_polygon));
7620  if (stroke_polygon == (PrimitiveInfo *) NULL)
7621  {
7622  (void) ThrowMagickException(exception,GetMagickModule(),
7623  ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7624  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7625  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7626  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7627  polygon_primitive);
7628  return(stroke_polygon);
7629  }
7630  for (i=0; i < (ssize_t) p; i++)
7631  {
7632  stroke_polygon[i]=polygon_primitive[0];
7633  stroke_polygon[i].point=stroke_p[i];
7634  }
7635  if (closed_path != MagickFalse)
7636  {
7637  stroke_polygon[i]=polygon_primitive[0];
7638  stroke_polygon[i].point=stroke_polygon[0].point;
7639  i++;
7640  }
7641  for ( ; i < (ssize_t) (p+q+closed_path); i++)
7642  {
7643  stroke_polygon[i]=polygon_primitive[0];
7644  stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7645  }
7646  if (closed_path != MagickFalse)
7647  {
7648  stroke_polygon[i]=polygon_primitive[0];
7649  stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7650  i++;
7651  }
7652  stroke_polygon[i]=polygon_primitive[0];
7653  stroke_polygon[i].point=stroke_polygon[0].point;
7654  i++;
7655  stroke_polygon[i].primitive=UndefinedPrimitive;
7656  stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7657  stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7658  stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7659  polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7660  return(stroke_polygon);
7661 }
Definition: image.h:153
Definition: draw.c:144