granicus.if.org Git - imagemagick/blob - magick/geometry.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %           GGGG   EEEEE   OOO   M   M  EEEEE  TTTTT  RRRR   Y   Y            %
   7 %           G      E      O   O  MM MM  E        T    R   R   Y Y             %
   8 %           G  GG  EEE    O   O  M M M  EEE      T    RRRR     Y              %
   9 %           G   G  E      O   O  M   M  E        T    R R      Y              %
  10 %            GGGG  EEEEE   OOO   M   M  EEEEE    T    R  R     Y              %
  11 %                                                                             %
  12 %                                                                             %
  13 %                       MagickCore Geometry Methods                           %
  14 %                                                                             %
  15 %                             Software Design                                 %
  16 %                               John Cristy                                   %
  17 %                              January 2003                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %
  37 */
  38 \f
  39 /*
  40   Include declarations.
  41 */
  42 #include "magick/studio.h"
  43 #include "magick/constitute.h"
  44 #include "magick/draw.h"
  45 #include "magick/exception.h"
  46 #include "magick/exception-private.h"
  47 #include "magick/geometry.h"
  48 #include "magick/memory_.h"
  49 #include "magick/string_.h"
  50 #include "magick/string-private.h"
  51 #include "magick/token.h"
  52 \f
  53 /*
  54 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  55 %                                                                             %
  56 %                                                                             %
  57 %                                                                             %
  58 %   G e t G e o m e t r y                                                     %
  59 %                                                                             %
  60 %                                                                             %
  61 %                                                                             %
  62 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  63 %
  64 %  GetGeometry() parses a geometry specification and returns the width,
  65 %  height, x, and y values.  It also returns flags that indicates which
  66 %  of the four values (width, height, x, y) were located in the string, and
  67 %  whether the x or y values are negative.  In addition, there are flags to
  68 %  report any meta characters (%, !, <, or >).
  69 %
  70 %  The format of the GetGeometry method is:
  71 %
  72 %      MagickStatusType GetGeometry(const char *geometry,ssize_t *x,ssize_t *y,
  73 %        size_t *width,size_t *height)
  74 %
  75 %  A description of each parameter follows:
  76 %
  77 %    o geometry:  The geometry.
  78 %
  79 %    o x,y:  The x and y offset as determined by the geometry specification.
  80 %
  81 %    o width,height:  The width and height as determined by the geometry
  82 %      specification.
  83 %
  84 */
  85 MagickExport MagickStatusType GetGeometry(const char *geometry,ssize_t *x,ssize_t *y,
  86   size_t *width,size_t *height)
  87 {
  88   char
  89     *p,
  90     pedantic_geometry[MaxTextExtent],
  91     *q;
  92
  93   double
  94     value;
  95
  96   MagickStatusType
  97     flags;
  98
  99   /*
 100     Remove whitespace and meta characters from geometry specification.
 101   */
 102   flags=NoValue;
 103   if ((geometry == (char *) NULL) || (*geometry == '\0'))
 104     return(flags);
 105   if (strlen(geometry) >= MaxTextExtent)
 106     return(flags);
 107   (void) CopyMagickString(pedantic_geometry,geometry,MaxTextExtent);
 108   for (p=pedantic_geometry; *p != '\0'; )
 109   {
 110     if (isspace((int) ((unsigned char) *p)) != 0)
 111       {
 112         (void) CopyMagickString(p,p+1,MaxTextExtent);
 113         continue;
 114       }
 115     switch ((int) *p)
 116     {
 117       case '%':
 118       {
 119         flags|=PercentValue;
 120         (void) CopyMagickString(p,p+1,MaxTextExtent);
 121         break;
 122       }
 123       case '!':
 124       {
 125         flags|=AspectValue;
 126         (void) CopyMagickString(p,p+1,MaxTextExtent);
 127         break;
 128       }
 129       case '<':
 130       {
 131         flags|=LessValue;
 132         (void) CopyMagickString(p,p+1,MaxTextExtent);
 133         break;
 134       }
 135       case '>':
 136       {
 137         flags|=GreaterValue;
 138         (void) CopyMagickString(p,p+1,MaxTextExtent);
 139         break;
 140       }
 141       case '^':
 142       {
 143         flags|=MinimumValue;
 144         (void) CopyMagickString(p,p+1,MaxTextExtent);
 145         break;
 146       }
 147       case '@':
 148       {
 149         flags|=AreaValue;
 150         (void) CopyMagickString(p,p+1,MaxTextExtent);
 151         break;
 152       }
 153       case '(':
 154       case ')':
 155       {
 156         (void) CopyMagickString(p,p+1,MaxTextExtent);
 157         break;
 158       }
 159       case '-':
 160       case '.':
 161       case ',':
 162       case '+':
 163       case '0':
 164       case '1':
 165       case '2':
 166       case '3':
 167       case '4':
 168       case '5':
 169       case '6':
 170       case '7':
 171       case '8':
 172       case '9':
 173       case -41:
 174       case 'x':
 175       case 'X':
 176       {
 177         p++;
 178         break;
 179       }
 180       default:
 181         return(flags);
 182     }
 183   }
 184   /*
 185     Parse width, height, x, and y.
 186   */
 187   p=pedantic_geometry;
 188   if (*p == '\0')
 189     return(flags);
 190   q=p;
 191   value=strtod(p,&q);
 192   (void) value;
 193   if (LocaleNCompare(p,"0x",2) == 0)
 194     value=strtol(p,&q,10);
 195   if ((((int) *q) == -41) || (*q == 'x') || (*q == 'X') || (*q == '\0'))
 196     {
 197       /*
 198         Parse width.
 199       */
 200       q=p;
 201       if (LocaleNCompare(p,"0x",2) == 0)
 202         *width=(size_t) strtol(p,&p,10);
 203       else
 204         *width=(size_t) floor(strtod(p,&p)+0.5);
 205       if (p != q)
 206         flags|=WidthValue;
 207     }
 208   if ((((int) *p) == -41) || (*p == 'x') || (*p == 'X'))
 209     {
 210       p++;
 211       if ((*p != '+') && (*p != '-'))
 212         {
 213           /*
 214             Parse height.
 215           */
 216           q=p;
 217           *height=(size_t) floor(strtod(p,&p)+0.5);
 218           if (p != q)
 219             flags|=HeightValue;
 220         }
 221     }
 222   if ((*p == '+') || (*p == '-'))
 223     {
 224       /*
 225         Parse x value.
 226       */
 227       if (*p == '-')
 228         flags|=XNegative;
 229       q=p;
 230       *x=(ssize_t) ceil(strtod(p,&p)-0.5);
 231       if (p != q)
 232         flags|=XValue;
 233       if ((*p == '+') || (*p == '-'))
 234         {
 235           /*
 236             Parse y value.
 237           */
 238           if (*p == '-')
 239             flags|=YNegative;
 240           q=p;
 241           *y=(ssize_t) ceil(strtod(p,&p)-0.5);
 242           if (p != q)
 243             flags|=YValue;
 244         }
 245     }
 246   return(flags);
 247 }
 248 \f
 249 /*
 250 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 251 %                                                                             %
 252 %                                                                             %
 253 %                                                                             %
 254 %  G e t P a g e G e o m e t r y                                              %
 255 %                                                                             %
 256 %                                                                             %
 257 %                                                                             %
 258 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 259 %
 260 %  GetPageGeometry() replaces any page mneumonic with the equivalent size in
 261 %  picas.
 262 %
 263 %  The format of the GetPageGeometry method is:
 264 %
 265 %      char *GetPageGeometry(const char *page_geometry)
 266 %
 267 %  A description of each parameter follows.
 268 %
 269 %   o  page_geometry:  Specifies a pointer to an array of characters.
 270 %      The string is either a Postscript page name (e.g. A4) or a postscript
 271 %      page geometry (e.g. 612x792+36+36).
 272 %
 273 */
 274 MagickExport char *GetPageGeometry(const char *page_geometry)
 275 {
 276   static const char
 277     *PageSizes[][2]=
 278     {
 279       { "4x6",  "288x432" },
 280       { "5x7",  "360x504" },
 281       { "7x9",  "504x648" },
 282       { "8x10", "576x720" },
 283       { "9x11",  "648x792" },
 284       { "9x12",  "648x864" },
 285       { "10x13",  "720x936" },
 286       { "10x14",  "720x1008" },
 287       { "11x17",  "792x1224" },
 288       { "a0",  "2384x3370" },
 289       { "a1",  "1684x2384" },
 290       { "a10", "73x105" },
 291       { "a2",  "1191x1684" },
 292       { "a3",  "842x1191" },
 293       { "a4",  "595x842" },
 294       { "a4smaLL", "595x842" },
 295       { "a5",  "420x595" },
 296       { "a6",  "297x420" },
 297       { "a7",  "210x297" },
 298       { "a8",  "148x210" },
 299       { "a9",  "105x148" },
 300       { "archa", "648x864" },
 301       { "archb", "864x1296" },
 302       { "archC", "1296x1728" },
 303       { "archd", "1728x2592" },
 304       { "arche", "2592x3456" },
 305       { "b0",  "2920x4127" },
 306       { "b1",  "2064x2920" },
 307       { "b10", "91x127" },
 308       { "b2",  "1460x2064" },
 309       { "b3",  "1032x1460" },
 310       { "b4",  "729x1032" },
 311       { "b5",  "516x729" },
 312       { "b6",  "363x516" },
 313       { "b7",  "258x363" },
 314       { "b8",  "181x258" },
 315       { "b9",  "127x181" },
 316       { "c0",  "2599x3676" },
 317       { "c1",  "1837x2599" },
 318       { "c2",  "1298x1837" },
 319       { "c3",  "918x1296" },
 320       { "c4",  "649x918" },
 321       { "c5",  "459x649" },
 322       { "c6",  "323x459" },
 323       { "c7",  "230x323" },
 324       { "executive", "540x720" },
 325       { "flsa", "612x936" },
 326       { "flse", "612x936" },
 327       { "folio",  "612x936" },
 328       { "halfletter", "396x612" },
 329       { "isob0", "2835x4008" },
 330       { "isob1", "2004x2835" },
 331       { "isob10", "88x125" },
 332       { "isob2", "1417x2004" },
 333       { "isob3", "1001x1417" },
 334       { "isob4", "709x1001" },
 335       { "isob5", "499x709" },
 336       { "isob6", "354x499" },
 337       { "isob7", "249x354" },
 338       { "isob8", "176x249" },
 339       { "isob9", "125x176" },
 340       { "jisb0", "1030x1456" },
 341       { "jisb1", "728x1030" },
 342       { "jisb2", "515x728" },
 343       { "jisb3", "364x515" },
 344       { "jisb4", "257x364" },
 345       { "jisb5", "182x257" },
 346       { "jisb6", "128x182" },
 347       { "ledger",  "1224x792" },
 348       { "legal",  "612x1008" },
 349       { "letter", "612x792" },
 350       { "lettersmaLL",  "612x792" },
 351       { "quarto",  "610x780" },
 352       { "statement",  "396x612" },
 353       { "tabloid",  "792x1224" },
 354       { (char *) NULL, (char *) NULL }
 355     };
 356
 357   char
 358     *page;
 359
 360   register ssize_t
 361     i;
 362
 363   assert(page_geometry != (char *) NULL);
 364   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",page_geometry);
 365   page=AcquireString(page_geometry);
 366   for (i=0; *PageSizes[i] != (char *) NULL; i++)
 367     if (LocaleNCompare(PageSizes[i][0],page,strlen(PageSizes[i][0])) == 0)
 368       {
 369         RectangleInfo
 370           geometry;
 371
 372         MagickStatusType
 373           flags;
 374
 375         /*
 376           Replace mneumonic with the equivalent size in dots-per-inch.
 377         */
 378         (void) CopyMagickString(page,PageSizes[i][1],MaxTextExtent);
 379         (void) ConcatenateMagickString(page,page_geometry+
 380           strlen(PageSizes[i][0]),MaxTextExtent);
 381         flags=GetGeometry(page,&geometry.x,&geometry.y,&geometry.width,
 382           &geometry.height);
 383         if ((flags & GreaterValue) == 0)
 384           (void) ConcatenateMagickString(page,">",MaxTextExtent);
 385         break;
 386       }
 387   return(page);
 388 }
 389 \f
 390 /*
 391 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 392 %                                                                             %
 393 %                                                                             %
 394 %                                                                             %
 395 %   G r a v i t y A d j u s t G e o m e t r y                                 %
 396 %                                                                             %
 397 %                                                                             %
 398 %                                                                             %
 399 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 400 %
 401 %  GravityAdjustGeometry() adjusts the offset of a region with regard to the
 402 %  given: width, height and gravity; against which it is positioned.
 403 %
 404 %  The region should also have an appropriate width and height to correctly
 405 %  set the right offset of the top left corner of the region.
 406 %
 407 %  The format of the GravityAdjustGeometry method is:
 408 %
 409 %      void GravityAdjustGeometry(const size_t width,
 410 %        const size_t height,const GravityType gravity,
 411 %        RectangleInfo *region);
 412 %
 413 %  A description of each parameter follows:
 414 %
 415 %    o width, height:  the larger area the region is relative to
 416 %
 417 %    o gravity: the edge/corner the current offset is relative to
 418 %
 419 %    o region:  The region requiring a offset adjustment relative to gravity
 420 %
 421 */
 422 MagickExport void GravityAdjustGeometry(const size_t width,
 423   const size_t height,const GravityType gravity,RectangleInfo *region)
 424 {
 425   if (region->height == 0)
 426     region->height=height;
 427   if (region->width == 0)
 428     region->width=width;
 429   switch (gravity)
 430   {
 431     case NorthEastGravity:
 432     case EastGravity:
 433     case SouthEastGravity:
 434     {
 435       region->x=(ssize_t) (width-region->width-region->x);
 436       break;
 437     }
 438     case NorthGravity:
 439     case SouthGravity:
 440     case CenterGravity:
 441     case StaticGravity:
 442     {
 443       region->x+=(ssize_t) (width/2-region->width/2);
 444       break;
 445     }
 446     case ForgetGravity:
 447     case NorthWestGravity:
 448     case WestGravity:
 449     case SouthWestGravity:
 450     default:
 451       break;
 452   }
 453   switch (gravity)
 454   {
 455     case SouthWestGravity:
 456     case SouthGravity:
 457     case SouthEastGravity:
 458     {
 459       region->y=(ssize_t) (height-region->height-region->y);
 460       break;
 461     }
 462     case EastGravity:
 463     case WestGravity:
 464     case CenterGravity:
 465     case StaticGravity:
 466     {
 467       region->y+=(ssize_t) (height/2-region->height/2);
 468       break;
 469     }
 470     case ForgetGravity:
 471     case NorthWestGravity:
 472     case NorthGravity:
 473     case NorthEastGravity:
 474     default:
 475       break;
 476   }
 477   return;
 478 }
 479 \f
 480 /*
 481 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 482 %                                                                             %
 483 %                                                                             %
 484 %                                                                             %
 485 +     I s G e o m e t r y                                                     %
 486 %                                                                             %
 487 %                                                                             %
 488 %                                                                             %
 489 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 490 %
 491 %  IsGeometry() returns MagickTrue if the geometry specification is valid.
 492 %  Examples are 100, 100x200, x200, 100x200+10+20, +10+20, 200%, 200x200!, etc.
 493 %
 494 %  The format of the IsGeometry method is:
 495 %
 496 %      MagickBooleanType IsGeometry(const char *geometry)
 497 %
 498 %  A description of each parameter follows:
 499 %
 500 %    o geometry: This string is the geometry specification.
 501 %
 502 */
 503 MagickExport MagickBooleanType IsGeometry(const char *geometry)
 504 {
 505   GeometryInfo
 506     geometry_info;
 507
 508   MagickStatusType
 509     flags;
 510
 511   if (geometry == (const char *) NULL)
 512     return(MagickFalse);
 513   flags=ParseGeometry(geometry,&geometry_info);
 514   if (flags == NoValue)
 515     flags=ParseGeometry(geometry+1,&geometry_info);  /* i.e. +-4+-4 */
 516   return(flags != NoValue ? MagickTrue : MagickFalse);
 517 }
 518 \f
 519 /*
 520 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 521 %                                                                             %
 522 %                                                                             %
 523 %                                                                             %
 524 +     I s S c e n e G e o m e t r y                                           %
 525 %                                                                             %
 526 %                                                                             %
 527 %                                                                             %
 528 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 529 %
 530 %  IsSceneGeometry() returns MagickTrue if the geometry is a valid scene
 531 %  specification (e.g. [1], [1-9], [1,7,4]).
 532 %
 533 %  The format of the IsSceneGeometry method is:
 534 %
 535 %      MagickBooleanType IsSceneGeometry(const char *geometry,
 536 %        const MagickBooleanType pedantic)
 537 %
 538 %  A description of each parameter follows:
 539 %
 540 %    o geometry: This string is the geometry specification.
 541 %
 542 %    o pedantic: A value other than 0 invokes a more restrictive set of
 543 %      conditions for a valid specification (e.g. [1], [1-4], [4-1]).
 544 %
 545 */
 546 MagickExport MagickBooleanType IsSceneGeometry(const char *geometry,
 547   const MagickBooleanType pedantic)
 548 {
 549   char
 550     *p;
 551
 552   double
 553     value;
 554
 555   if (geometry == (const char *) NULL)
 556     return(MagickFalse);
 557   p=(char *) geometry;
 558   value=strtod(geometry,&p);
 559   (void) value;
 560   if (p == geometry)
 561     return(MagickFalse);
 562   if (strspn(geometry,"0123456789-, ") != strlen(geometry))
 563     return(MagickFalse);
 564   if ((pedantic != MagickFalse) && (strchr(geometry,',') != (char *) NULL))
 565     return(MagickFalse);
 566   return(MagickTrue);
 567 }
 568 \f
 569 /*
 570 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 571 %                                                                             %
 572 %                                                                             %
 573 %                                                                             %
 574 %   P a r s e A b s o l u t e G e o m e t r y                                 %
 575 %                                                                             %
 576 %                                                                             %
 577 %                                                                             %
 578 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 579 %
 580 %  ParseAbsoluteGeometry() returns a region as defined by the geometry string.
 581 %
 582 %  The format of the ParseAbsoluteGeometry method is:
 583 %
 584 %      MagickStatusType ParseAbsoluteGeometry(const char *geometry,
 585 %        RectangleInfo *region_info)
 586 %
 587 %  A description of each parameter follows:
 588 %
 589 %    o geometry:  The geometry (e.g. 100x100+10+10).
 590 %
 591 %    o region_info: the region as defined by the geometry string.
 592 %
 593 */
 594 MagickExport MagickStatusType ParseAbsoluteGeometry(const char *geometry,
 595   RectangleInfo *region_info)
 596 {
 597   MagickStatusType
 598     flags;
 599
 600   flags=GetGeometry(geometry,&region_info->x,&region_info->y,
 601     &region_info->width,&region_info->height);
 602   return(flags);
 603 }
 604 \f
 605 /*
 606 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 607 %                                                                             %
 608 %                                                                             %
 609 %                                                                             %
 610 %   P a r s e A f f i n e G e o m e t r y                                     %
 611 %                                                                             %
 612 %                                                                             %
 613 %                                                                             %
 614 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 615 %
 616 %  ParseAffineGeometry() returns an affine matrix as defined by the geometry
 617 %  string.
 618 %
 619 %  The format of the ParseAffineGeometry method is:
 620 %
 621 %      MagickStatusType ParseAffineGeometry(const char *geometry,
 622 %        AffineMatrix *affine_matrix,ExceptionInfo *exception)
 623 %
 624 %  A description of each parameter follows:
 625 %
 626 %    o geometry:  The geometry (e.g. 1.0,0.0,0.0,1.0,3.2,1.2).
 627 %
 628 %    o affine_matrix: the affine matrix as defined by the geometry string.
 629 %
 630 %    o exception: return any errors or warnings in this structure.
 631 %
 632 */
 633 MagickExport MagickStatusType ParseAffineGeometry(const char *geometry,
 634   AffineMatrix *affine_matrix,ExceptionInfo *exception)
 635 {
 636   char
 637     token[MaxTextExtent];
 638
 639   const char
 640     *p;
 641
 642   double
 643     determinant;
 644
 645   MagickStatusType
 646     flags;
 647
 648   register ssize_t
 649     i;
 650
 651   GetAffineMatrix(affine_matrix);
 652   flags=NoValue;
 653   p=(char *) geometry;
 654   for (i=0; (*p != '\0') && (i < 6); i++)
 655   {
 656     GetMagickToken(p,&p,token);
 657     if (*token == ',')
 658       GetMagickToken(p,&p,token);
 659     switch (i)
 660     {
 661       case 0: affine_matrix->sx=StringToDouble(token); break;
 662       case 1: affine_matrix->rx=StringToDouble(token); break;
 663       case 2: affine_matrix->ry=StringToDouble(token); break;
 664       case 3: affine_matrix->sy=StringToDouble(token); break;
 665       case 4: affine_matrix->tx=StringToDouble(token); flags|=XValue; break;
 666       case 5: affine_matrix->ty=StringToDouble(token); flags|=YValue; break;
 667     }
 668   }
 669   determinant=(affine_matrix->sx*affine_matrix->sy-affine_matrix->rx*
 670     affine_matrix->ry);
 671   if (fabs(determinant) < MagickEpsilon)
 672     (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
 673       "InvalidGeometry","`%s'",geometry);
 674   return(flags);
 675 }
 676 \f
 677 /*
 678 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 679 %                                                                             %
 680 %                                                                             %
 681 %                                                                             %
 682 %   P a r s e G e o m e t r y                                                 %
 683 %                                                                             %
 684 %                                                                             %
 685 %                                                                             %
 686 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 687 %
 688 %  ParseGeometry() parses a geometry specification and returns the sigma,
 689 %  rho, xi, and psi values.  It also returns flags that indicates which
 690 %  of the four values (sigma, rho, xi, psi) were located in the string, and
 691 %  whether the xi or pi values are negative.  In addition, there are flags to
 692 %  report any meta characters (%, !, <, or >).
 693 %
 694 %  The format of the ParseGeometry method is:
 695 %
 696 %      MagickStatusType ParseGeometry(const char *geometry,
 697 %        GeometryInfo *geometry_info)
 698 %
 699 %  A description of each parameter follows:
 700 %
 701 %    o geometry:  The geometry.
 702 %
 703 %    o geometry_info:  returns the parsed width/height/x/y in this structure.
 704 %
 705 */
 706 MagickExport MagickStatusType ParseGeometry(const char *geometry,
 707   GeometryInfo *geometry_info)
 708 {
 709   char
 710     *p,
 711     pedantic_geometry[MaxTextExtent],
 712     *q;
 713
 714   double
 715     value;
 716
 717   MagickStatusType
 718     flags;
 719
 720   /*
 721     Remove whitespaces meta characters from geometry specification.
 722   */
 723   assert(geometry_info != (GeometryInfo *) NULL);
 724   flags=NoValue;
 725   if ((geometry == (char *) NULL) || (*geometry == '\0'))
 726     return(flags);
 727   if (strlen(geometry) >= MaxTextExtent)
 728     return(flags);
 729   (void) CopyMagickString(pedantic_geometry,geometry,MaxTextExtent);
 730   for (p=pedantic_geometry; *p != '\0'; )
 731   {
 732     if (isspace((int) ((unsigned char) *p)) != 0)
 733       {
 734         (void) CopyMagickString(p,p+1,MaxTextExtent);
 735         continue;
 736       }
 737     switch ((int) *p)
 738     {
 739       case '%':
 740       {
 741         flags|=PercentValue;
 742         (void) CopyMagickString(p,p+1,MaxTextExtent);
 743         break;
 744       }
 745       case '!':
 746       {
 747         flags|=AspectValue;
 748         (void) CopyMagickString(p,p+1,MaxTextExtent);
 749         break;
 750       }
 751       case '<':
 752       {
 753         flags|=LessValue;
 754         (void) CopyMagickString(p,p+1,MaxTextExtent);
 755         break;
 756       }
 757       case '>':
 758       {
 759         flags|=GreaterValue;
 760         (void) CopyMagickString(p,p+1,MaxTextExtent);
 761         break;
 762       }
 763       case '^':
 764       {
 765         flags|=MinimumValue;
 766         (void) CopyMagickString(p,p+1,MaxTextExtent);
 767         break;
 768       }
 769       case '@':
 770       {
 771         flags|=AreaValue;
 772         (void) CopyMagickString(p,p+1,MaxTextExtent);
 773         break;
 774       }
 775       case '(':
 776       case ')':
 777       {
 778         (void) CopyMagickString(p,p+1,MaxTextExtent);
 779         break;
 780       }
 781       case '-':
 782       case '+':
 783       case ',':
 784       case '0':
 785       case '1':
 786       case '2':
 787       case '3':
 788       case '4':
 789       case '5':
 790       case '6':
 791       case '7':
 792       case '8':
 793       case '9':
 794       case -41:
 795       case 'x':
 796       case 'X':
 797       case '/':
 798       case ':':
 799       {
 800         p++;
 801         break;
 802       }
 803       case '.':
 804       {
 805         p++;
 806         flags|=DecimalValue;
 807         break;
 808       }
 809       default:
 810         return(flags);
 811     }
 812   }
 813   /*
 814     Parse rho, sigma, xi, psi, and optionally chi.
 815   */
 816   p=pedantic_geometry;
 817   if (*p == '\0')
 818     return(flags);
 819   q=p;
 820   value=strtod(p,&q);
 821   if (LocaleNCompare(p,"0x",2) == 0)
 822     value=(double) strtol(p,&q,10);
 823   if ((((int) *q) == -41) || (*q == 'x') || (*q == 'X') || (*q == ',') ||
 824       (*q == '/') || (*q == ':') || (*q =='\0'))
 825     {
 826       /*
 827         Parse rho.
 828       */
 829       q=p;
 830       if (LocaleNCompare(p,"0x",2) == 0)
 831         value=(double) strtol(p,&p,10);
 832       else
 833         value=strtod(p,&p);
 834       if (p != q)
 835         {
 836           flags|=RhoValue;
 837           geometry_info->rho=value;
 838         }
 839     }
 840   q=p;
 841   if ((((int) *p) == -41) || (*p == 'x') || (*p == 'X') || (*p == ',') ||
 842       (*p == '/') || (*p == ':'))
 843     {
 844       /*
 845         Parse sigma.
 846       */
 847       p++;
 848       while (isspace((int) ((unsigned char) *p)) != 0)
 849         p++;
 850       if (((((int) *q) != -41) && (*q != 'x') && (*q != 'X')) ||
 851           ((*p != '+') && (*p != '-')))
 852         {
 853           q=p;
 854           value=strtod(p,&p);
 855           if (p != q)
 856             {
 857               flags|=SigmaValue;
 858               geometry_info->sigma=value;
 859             }
 860         }
 861     }
 862   while (isspace((int) ((unsigned char) *p)) != 0)
 863     p++;
 864   if ((*p == '+') || (*p == '-') || (*p == ',') || (*p == '/') || (*p == ':'))
 865     {
 866       /*
 867         Parse xi value.
 868       */
 869       if ((*p == ',') || (*p == '/') || (*p == ':'))
 870         p++;
 871       q=p;
 872       value=strtod(p,&p);
 873       if (p != q)
 874         {
 875           flags|=XiValue;
 876           if (*q == '-')
 877             flags|=XiNegative;
 878           geometry_info->xi=value;
 879         }
 880       while (isspace((int) ((unsigned char) *p)) != 0)
 881         p++;
 882       if ((*p == '+') || (*p == '-') || (*p == ',') || (*p == '/') ||
 883           (*p == ':'))
 884         {
 885           /*
 886             Parse psi value.
 887           */
 888           if ((*p == ',') || (*p == '/') || (*p == ':'))
 889             p++;
 890           q=p;
 891           value=strtod(p,&p);
 892           if (p != q)
 893             {
 894               flags|=PsiValue;
 895               if (*q == '-')
 896                 flags|=PsiNegative;
 897               geometry_info->psi=value;
 898             }
 899         }
 900       while (isspace((int) ((unsigned char) *p)) != 0)
 901         p++;
 902       if ((*p == '+') || (*p == '-') || (*p == ',') || (*p == '/') ||
 903           (*p == ':'))
 904         {
 905           /*
 906             Parse chi value.
 907           */
 908           if ((*p == ',') || (*p == '/') || (*p == ':'))
 909             p++;
 910           q=p;
 911           value=strtod(p,&p);
 912           if (p != q)
 913             {
 914               flags|=ChiValue;
 915               if (*q == '-')
 916                 flags|=ChiNegative;
 917               geometry_info->chi=value;
 918             }
 919         }
 920     }
 921   if (strchr(pedantic_geometry,':') != (char *) NULL)
 922     {
 923       /*
 924         Normalize sampling factor (e.g. 4:2:2 => 2x1).
 925       */
 926       geometry_info->rho/=geometry_info->sigma;
 927       geometry_info->sigma=1.0;
 928       if (geometry_info->xi == 0.0)
 929         geometry_info->sigma=2.0;
 930     }
 931   if (((flags & SigmaValue) == 0) && ((flags & XiValue) != 0) &&
 932       ((flags & PsiValue) == 0))
 933     {
 934       /*
 935         Support negative height values (e.g. 30x-20).
 936       */
 937       geometry_info->sigma=geometry_info->xi;
 938       geometry_info->xi=0.0;
 939       flags|=SigmaValue;
 940       flags&=(~XiValue);
 941     }
 942   return(flags);
 943 }
 944 \f
 945 /*
 946 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 947 %                                                                             %
 948 %                                                                             %
 949 %                                                                             %
 950 %   P a r s e G r a v i t y G e o m e t r y                                   %
 951 %                                                                             %
 952 %                                                                             %
 953 %                                                                             %
 954 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 955 %
 956 %  ParseGravityGeometry() returns a region as defined by the geometry string
 957 %  with respect to the image dimensions and its gravity.
 958 %
 959 %  The format of the ParseGravityGeometry method is:
 960 %
 961 %      MagickStatusType ParseGravityGeometry(Image *image,const char *geometry,
 962 %        RectangeInfo *region_info,ExceptionInfo *exception)
 963 %
 964 %  A description of each parameter follows:
 965 %
 966 %    o geometry:  The geometry (e.g. 100x100+10+10).
 967 %
 968 %    o region_info: the region as defined by the geometry string with
 969 %      respect to the image dimensions and its gravity.
 970 %
 971 %    o exception: return any errors or warnings in this structure.
 972 %
 973 */
 974 MagickExport MagickStatusType ParseGravityGeometry(const Image *image,
 975   const char *geometry,RectangleInfo *region_info,ExceptionInfo *exception)
 976 {
 977   MagickStatusType
 978     flags;
 979
 980   size_t
 981     height,
 982     width;
 983
 984   SetGeometry(image,region_info);
 985   if (image->page.width != 0)
 986     region_info->width=image->page.width;
 987   if (image->page.height != 0)
 988     region_info->height=image->page.height;
 989   flags=ParseAbsoluteGeometry(geometry,region_info);
 990   if (flags == NoValue)
 991     {
 992       (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
 993         "InvalidGeometry","`%s'",geometry);
 994       return(flags);
 995     }
 996   if ((flags & PercentValue) != 0)
 997     {
 998       GeometryInfo
 999         geometry_info;
1000
1001       MagickStatusType
1002         status;
1003
1004       PointInfo
1005         scale;
1006
1007       /*
1008         Geometry is a percentage of the image size.
1009       */
1010       if (image->gravity != UndefinedGravity)
1011         flags|=XValue | YValue;
1012       status=ParseGeometry(geometry,&geometry_info);
1013       scale.x=geometry_info.rho;
1014       if ((status & RhoValue) == 0)
1015         scale.x=100.0;
1016       scale.y=geometry_info.sigma;
1017       if ((status & SigmaValue) == 0)
1018         scale.y=scale.x;
1019       region_info->width=(size_t) floor((scale.x*image->columns/100.0)+
1020         0.5);
1021       region_info->height=(size_t) floor((scale.y*image->rows/100.0)+
1022         0.5);
1023     }
1024   /*
1025     Adjust offset according to gravity setting.
1026   */
1027   width=region_info->width;
1028   height=region_info->height;
1029   if (width == 0)
1030     region_info->width=image->page.width | image->columns;
1031   if (height == 0)
1032     region_info->height=image->page.height | image->rows;
1033   GravityAdjustGeometry(image->columns,image->rows,image->gravity,region_info);
1034   region_info->width=width;
1035   region_info->height=height;
1036   return(flags);
1037 }
1038 \f
1039 /*
1040 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1041 %                                                                             %
1042 %                                                                             %
1043 %                                                                             %
1044 +   P a r s e M e t a G e o m e t r y                                         %
1045 %                                                                             %
1046 %                                                                             %
1047 %                                                                             %
1048 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1049 %
1050 %  ParseMetaGeometry() is similar to GetGeometry() except the returned
1051 %  geometry is modified as determined by the meta characters:  %, !, <, >,
1052 %  and ~.
1053 %
1054 %  The format of the ParseMetaGeometry method is:
1055 %
1056 %      MagickStatusType ParseMetaGeometry(const char *geometry,ssize_t *x,ssize_t *y,
1057 %        size_t *width,size_t *height)
1058 %
1059 %  A description of each parameter follows:
1060 %
1061 %    o geometry:  The geometry.
1062 %
1063 %    o x,y:  The x and y offset as determined by the geometry specification.
1064 %
1065 %    o width,height:  The width and height as determined by the geometry
1066 %      specification.
1067 %
1068 */
1069
1070 static inline size_t MagickMax(const size_t x,
1071   const size_t y)
1072 {
1073   if (x > y)
1074     return(x);
1075   return(y);
1076 }
1077
1078 MagickExport MagickStatusType ParseMetaGeometry(const char *geometry,ssize_t *x,
1079   ssize_t *y,size_t *width,size_t *height)
1080 {
1081   GeometryInfo
1082     geometry_info;
1083
1084   MagickStatusType
1085     flags;
1086
1087   size_t
1088     former_height,
1089     former_width;
1090
1091   /*
1092     Ensure the image geometry is valid.
1093   */
1094   assert(x != (ssize_t *) NULL);
1095   assert(y != (ssize_t *) NULL);
1096   assert(width != (size_t *) NULL);
1097   assert(height != (size_t *) NULL);
1098   if ((geometry == (char *) NULL) || (*geometry == '\0'))
1099     return(NoValue);
1100   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",geometry);
1101   /*
1102     Parse geometry using GetGeometry.
1103   */
1104   SetGeometryInfo(&geometry_info);
1105   former_width=(*width);
1106   former_height=(*height);
1107   flags=GetGeometry(geometry,x,y,width,height);
1108   if ((flags & PercentValue) != 0)
1109     {
1110       MagickStatusType
1111         flags;
1112
1113       PointInfo
1114         scale;
1115
1116       /*
1117         Geometry is a percentage of the image size.
1118       */
1119       flags=ParseGeometry(geometry,&geometry_info);
1120       scale.x=geometry_info.rho;
1121       if ((flags & RhoValue) == 0)
1122         scale.x=100.0;
1123       scale.y=geometry_info.sigma;
1124       if ((flags & SigmaValue) == 0)
1125         scale.y=scale.x;
1126       *width=(size_t) floor(scale.x*former_width/100.0+0.5);
1127       if (*width == 0)
1128         *width=1;
1129       *height=(size_t) floor(scale.y*former_height/100.0+0.5);
1130       if (*height == 0)
1131         *height=1;
1132       former_width=(*width);
1133       former_height=(*height);
1134     }
1135   if (((flags & AspectValue) == 0) && ((*width != former_width) ||
1136       (*height != former_height)))
1137     {
1138       MagickRealType
1139         scale_factor;
1140
1141       /*
1142         Respect aspect ratio of the image.
1143       */
1144       if ((former_width == 0) || (former_height == 0))
1145         scale_factor=1.0;
1146       else
1147         if (((flags & RhoValue) != 0) && (flags & SigmaValue) != 0)
1148           {
1149             scale_factor=(MagickRealType) *width/(MagickRealType) former_width;
1150             if ((flags & MinimumValue) == 0)
1151               {
1152                 if (scale_factor > ((MagickRealType) *height/
1153                     (MagickRealType) former_height))
1154                   scale_factor=(MagickRealType) *height/(MagickRealType)
1155                     former_height;
1156               }
1157             else
1158               if (scale_factor < ((MagickRealType) *height/
1159                   (MagickRealType) former_height))
1160                 scale_factor=(MagickRealType) *height/(MagickRealType)
1161                   former_height;
1162           }
1163         else
1164           if ((flags & RhoValue) != 0)
1165             {
1166               scale_factor=(MagickRealType) *width/(MagickRealType)
1167                 former_width;
1168               if (((flags & MinimumValue) != 0) &&
1169                   (scale_factor < ((MagickRealType) *width/
1170                     (MagickRealType) former_height)))
1171                 scale_factor=(MagickRealType) *width/(MagickRealType)
1172                   former_height;
1173             }
1174           else
1175             {
1176               scale_factor=(MagickRealType) *height/(MagickRealType)
1177                 former_height;
1178               if (((flags & MinimumValue) != 0) &&
1179                   (scale_factor < ((MagickRealType) *height/
1180                     (MagickRealType) former_width)))
1181                 scale_factor=(MagickRealType) *height/(MagickRealType)
1182                   former_width;
1183             }
1184       *width=MagickMax((size_t) floor(scale_factor*former_width+0.5),
1185         1UL);
1186       *height=MagickMax((size_t) floor(scale_factor*former_height+0.5),
1187         1UL);
1188     }
1189   if ((flags & GreaterValue) != 0)
1190     {
1191       if (former_width < *width)
1192         *width=former_width;
1193       if (former_height < *height)
1194         *height=former_height;
1195     }
1196   if ((flags & LessValue) != 0)
1197     {
1198       if (former_width > *width)
1199         *width=former_width;
1200       if (former_height > *height)
1201         *height=former_height;
1202     }
1203   if ((flags & AreaValue) != 0)
1204     {
1205       MagickRealType
1206         area,
1207         distance;
1208
1209       PointInfo
1210         scale;
1211
1212       /*
1213         Geometry is a maximum area in pixels.
1214       */
1215       (void) ParseGeometry(geometry,&geometry_info);
1216       area=geometry_info.rho;
1217       distance=sqrt((double) former_width*former_height);
1218       scale.x=(double) former_width/(double) (distance/sqrt((double) area));
1219       scale.y=(double) former_height/(double) (distance/sqrt((double) area));
1220       if ((scale.x < (double) *width) || (scale.y < (double) *height))
1221         {
1222           *width=(size_t) (former_width/(distance/sqrt((double) area)));
1223           *height=(size_t) (former_height/(distance/
1224             sqrt((double) area)));
1225         }
1226       former_width=(*width);
1227       former_height=(*height);
1228     }
1229   return(flags);
1230 }
1231 \f
1232 /*
1233 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1234 %                                                                             %
1235 %                                                                             %
1236 %                                                                             %
1237 %   P a r s e P a g e G e o m e t r y                                         %
1238 %                                                                             %
1239 %                                                                             %
1240 %                                                                             %
1241 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1242 %
1243 %  ParsePageGeometry() returns a region as defined by the geometry string with
1244 %  respect to the image dimensions.
1245 %
1246 %  The format of the ParsePageGeometry method is:
1247 %
1248 %      MagickStatusType ParsePageGeometry(const Image *image,
1249 %        const char *geometry,RectangeInfo *region_info,
1250 %        ExceptionInfo *exception)
1251 %
1252 %  A description of each parameter follows:
1253 %
1254 %    o geometry:  The geometry (e.g. 100x100+10+10).
1255 %
1256 %    o region_info: the region as defined by the geometry string with
1257 %      respect to the image and its gravity.
1258 %
1259 %    o exception: return any errors or warnings in this structure.
1260 %
1261 */
1262 MagickExport MagickStatusType ParsePageGeometry(const Image *image,
1263   const char *geometry,RectangleInfo *region_info,ExceptionInfo *exception)
1264 {
1265   MagickStatusType
1266     flags;
1267
1268   SetGeometry(image,region_info);
1269   if (image->page.width != 0)
1270     region_info->width=image->page.width;
1271   if (image->page.height != 0)
1272     region_info->height=image->page.height;
1273   flags=ParseAbsoluteGeometry(geometry,region_info);
1274   if (flags == NoValue)
1275     {
1276       (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1277         "InvalidGeometry","`%s'",geometry);
1278       return(flags);
1279     }
1280   if ((flags & PercentValue) != 0)
1281     {
1282       region_info->width=image->columns;
1283       region_info->height=image->rows;
1284     }
1285   flags=ParseMetaGeometry(geometry,&region_info->x,&region_info->y,
1286     &region_info->width,&region_info->height);
1287   return(flags);
1288 }
1289 \f
1290 /*
1291 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1292 %                                                                             %
1293 %                                                                             %
1294 %                                                                             %
1295 %   P a r s e R e g i o n G e o m e t r y                                     %
1296 %                                                                             %
1297 %                                                                             %
1298 %                                                                             %
1299 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1300 %
1301 %  ParseRegionGeometry() returns a region as defined by the geometry string
1302 %  with respect to the image dimensions and aspect ratio.
1303 %
1304 %  The format of the ParseRegionGeometry method is:
1305 %
1306 %      MagickStatusType ParseRegionGeometry(const Image *image,
1307 %        const char *geometry,RectangeInfo *region_info,
1308 %        ExceptionInfo *exception)
1309 %
1310 %  A description of each parameter follows:
1311 %
1312 %    o geometry:  The geometry (e.g. 100x100+10+10).
1313 %
1314 %    o region_info: the region as defined by the geometry string.
1315 %
1316 %    o exception: return any errors or warnings in this structure.
1317 %
1318 */
1319 MagickExport MagickStatusType ParseRegionGeometry(const Image *image,
1320   const char *geometry,RectangleInfo *region_info,ExceptionInfo *exception)
1321 {
1322   MagickStatusType
1323     flags;
1324
1325   SetGeometry(image,region_info);
1326   flags=ParseMetaGeometry(geometry,&region_info->x,&region_info->y,
1327     &region_info->width,&region_info->height);
1328   if (flags == NoValue)
1329     (void) ThrowMagickException(exception,GetMagickModule(),OptionError,
1330       "InvalidGeometry","`%s'",geometry);
1331   return(flags);
1332 }
1333 \f
1334 /*
1335 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1336 %                                                                             %
1337 %                                                                             %
1338 %                                                                             %
1339 %   S e t G e o m e t r y                                                     %
1340 %                                                                             %
1341 %                                                                             %
1342 %                                                                             %
1343 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1344 %
1345 %  SetGeometry() sets the geometry to its default values.
1346 %
1347 %  The format of the SetGeometry method is:
1348 %
1349 %      SetGeometry(const Image *image,RectangleInfo *geometry)
1350 %
1351 %  A description of each parameter follows:
1352 %
1353 %    o image: the image.
1354 %
1355 %    o geometry: the geometry.
1356 %
1357 */
1358 MagickExport void SetGeometry(const Image *image,RectangleInfo *geometry)
1359 {
1360   assert(image != (Image *) NULL);
1361   assert(image->signature == MagickSignature);
1362   if (image->debug != MagickFalse)
1363     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1364   assert(geometry != (RectangleInfo *) NULL);
1365   (void) ResetMagickMemory(geometry,0,sizeof(*geometry));
1366   geometry->width=image->columns;
1367   geometry->height=image->rows;
1368 }
1369 \f
1370 /*
1371 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1372 %                                                                             %
1373 %                                                                             %
1374 %                                                                             %
1375 %   S e t G e o m e t r y I n f o                                             %
1376 %                                                                             %
1377 %                                                                             %
1378 %                                                                             %
1379 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1380 %
1381 %  SetGeometryInfo sets the GeometryInfo structure to its default values.
1382 %
1383 %  The format of the SetGeometryInfo method is:
1384 %
1385 %      SetGeometryInfo(GeometryInfo *geometry_info)
1386 %
1387 %  A description of each parameter follows:
1388 %
1389 %    o geometry_info: the geometry info structure.
1390 %
1391 */
1392 MagickExport void SetGeometryInfo(GeometryInfo *geometry_info)
1393 {
1394   assert(geometry_info != (GeometryInfo *) NULL);
1395   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1396   (void) ResetMagickMemory(geometry_info,0,sizeof(*geometry_info));
1397 }