cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % % |
| 6 | % SSSSS H H EEEEE AAA RRRR % |
| 7 | % SS H H E A A R R % |
| 8 | % SSS HHHHH EEE AAAAA RRRR % |
| 9 | % SS H H E A A R R % |
| 10 | % SSSSS H H EEEEE A A R R % |
| 11 | % % |
| 12 | % % |
| 13 | % MagickCore Methods to Shear or Rotate an Image by an Arbitrary Angle % |
| 14 | % % |
| 15 | % Software Design % |
| 16 | % John Cristy % |
| 17 | % July 1992 % |
| 18 | % % |
| 19 | % % |
cristy | 45ef08f | 2012-12-07 13:13:34 +0000 | [diff] [blame] | 20 | % Copyright 1999-2013 ImageMagick Studio LLC, a non-profit organization % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 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 | % |
cristy | c7c8114 | 2011-11-07 12:14:23 +0000 | [diff] [blame] | 36 | % The XShearImage() and YShearImage() methods are based on the paper "A Fast |
cristy | 7f81c00 | 2011-11-07 01:08:58 +0000 | [diff] [blame] | 37 | % Algorithm for General Raster Rotatation" by Alan W. Paeth, Graphics |
cristy | c7c8114 | 2011-11-07 12:14:23 +0000 | [diff] [blame] | 38 | % Interface '86 (Vancouver). ShearRotateImage() is adapted from a similar |
| 39 | % method based on the Paeth paper written by Michael Halle of the Spatial |
| 40 | % Imaging Group, MIT Media Lab. |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 41 | % |
| 42 | */ |
| 43 | |
| 44 | /* |
| 45 | Include declarations. |
| 46 | */ |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 47 | #include "MagickCore/studio.h" |
| 48 | #include "MagickCore/artifact.h" |
| 49 | #include "MagickCore/attribute.h" |
| 50 | #include "MagickCore/blob-private.h" |
| 51 | #include "MagickCore/cache-private.h" |
| 52 | #include "MagickCore/color-private.h" |
| 53 | #include "MagickCore/colorspace-private.h" |
| 54 | #include "MagickCore/composite.h" |
| 55 | #include "MagickCore/composite-private.h" |
| 56 | #include "MagickCore/decorate.h" |
| 57 | #include "MagickCore/distort.h" |
| 58 | #include "MagickCore/draw.h" |
| 59 | #include "MagickCore/exception.h" |
| 60 | #include "MagickCore/exception-private.h" |
| 61 | #include "MagickCore/gem.h" |
| 62 | #include "MagickCore/geometry.h" |
| 63 | #include "MagickCore/image.h" |
| 64 | #include "MagickCore/image-private.h" |
| 65 | #include "MagickCore/memory_.h" |
| 66 | #include "MagickCore/list.h" |
| 67 | #include "MagickCore/monitor.h" |
| 68 | #include "MagickCore/monitor-private.h" |
cristy | 2c5fc27 | 2012-02-22 01:27:46 +0000 | [diff] [blame] | 69 | #include "MagickCore/nt-base-private.h" |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 70 | #include "MagickCore/pixel-accessor.h" |
| 71 | #include "MagickCore/quantum.h" |
| 72 | #include "MagickCore/resource_.h" |
| 73 | #include "MagickCore/shear.h" |
| 74 | #include "MagickCore/statistic.h" |
| 75 | #include "MagickCore/string_.h" |
| 76 | #include "MagickCore/string-private.h" |
| 77 | #include "MagickCore/thread-private.h" |
| 78 | #include "MagickCore/threshold.h" |
| 79 | #include "MagickCore/transform.h" |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 80 | |
| 81 | /* |
| 82 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 83 | % % |
| 84 | % % |
| 85 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 86 | + C r o p T o F i t I m a g e % |
| 87 | % % |
| 88 | % % |
| 89 | % % |
| 90 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 91 | % |
| 92 | % CropToFitImage() crops the sheared image as determined by the bounding box |
| 93 | % as defined by width and height and shearing angles. |
| 94 | % |
| 95 | % The format of the CropToFitImage method is: |
| 96 | % |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 97 | % MagickBooleanType CropToFitImage(Image **image, |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 98 | % const double x_shear,const double x_shear, |
| 99 | % const double width,const double height, |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 100 | % const MagickBooleanType rotate,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 101 | % |
| 102 | % A description of each parameter follows. |
| 103 | % |
| 104 | % o image: the image. |
| 105 | % |
| 106 | % o x_shear, y_shear, width, height: Defines a region of the image to crop. |
| 107 | % |
| 108 | % o exception: return any errors or warnings in this structure. |
| 109 | % |
| 110 | */ |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 111 | static MagickBooleanType CropToFitImage(Image **image, |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 112 | const double x_shear,const double y_shear, |
| 113 | const double width,const double height, |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 114 | const MagickBooleanType rotate,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 115 | { |
| 116 | Image |
| 117 | *crop_image; |
| 118 | |
| 119 | PointInfo |
| 120 | extent[4], |
| 121 | min, |
| 122 | max; |
| 123 | |
| 124 | RectangleInfo |
| 125 | geometry, |
| 126 | page; |
| 127 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 128 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 129 | i; |
| 130 | |
| 131 | /* |
| 132 | Calculate the rotated image size. |
| 133 | */ |
| 134 | extent[0].x=(double) (-width/2.0); |
| 135 | extent[0].y=(double) (-height/2.0); |
| 136 | extent[1].x=(double) width/2.0; |
| 137 | extent[1].y=(double) (-height/2.0); |
| 138 | extent[2].x=(double) (-width/2.0); |
| 139 | extent[2].y=(double) height/2.0; |
| 140 | extent[3].x=(double) width/2.0; |
| 141 | extent[3].y=(double) height/2.0; |
| 142 | for (i=0; i < 4; i++) |
| 143 | { |
| 144 | extent[i].x+=x_shear*extent[i].y; |
| 145 | extent[i].y+=y_shear*extent[i].x; |
| 146 | if (rotate != MagickFalse) |
| 147 | extent[i].x+=x_shear*extent[i].y; |
| 148 | extent[i].x+=(double) (*image)->columns/2.0; |
| 149 | extent[i].y+=(double) (*image)->rows/2.0; |
| 150 | } |
| 151 | min=extent[0]; |
| 152 | max=extent[0]; |
| 153 | for (i=1; i < 4; i++) |
| 154 | { |
| 155 | if (min.x > extent[i].x) |
| 156 | min.x=extent[i].x; |
| 157 | if (min.y > extent[i].y) |
| 158 | min.y=extent[i].y; |
| 159 | if (max.x < extent[i].x) |
| 160 | max.x=extent[i].x; |
| 161 | if (max.y < extent[i].y) |
| 162 | max.y=extent[i].y; |
| 163 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 164 | geometry.x=(ssize_t) ceil(min.x-0.5); |
| 165 | geometry.y=(ssize_t) ceil(min.y-0.5); |
| 166 | geometry.width=(size_t) floor(max.x-min.x+0.5); |
| 167 | geometry.height=(size_t) floor(max.y-min.y+0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 168 | page=(*image)->page; |
| 169 | (void) ParseAbsoluteGeometry("0x0+0+0",&(*image)->page); |
| 170 | crop_image=CropImage(*image,&geometry,exception); |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 171 | if (crop_image == (Image *) NULL) |
| 172 | return(MagickFalse); |
| 173 | crop_image->page=page; |
| 174 | *image=DestroyImage(*image); |
| 175 | *image=crop_image; |
| 176 | return(MagickTrue); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | /* |
| 180 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 181 | % % |
| 182 | % % |
| 183 | % % |
| 184 | % D e s k e w I m a g e % |
| 185 | % % |
| 186 | % % |
| 187 | % % |
| 188 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 189 | % |
| 190 | % DeskewImage() removes skew from the image. Skew is an artifact that |
| 191 | % occurs in scanned images because of the camera being misaligned, |
| 192 | % imperfections in the scanning or surface, or simply because the paper was |
| 193 | % not placed completely flat when scanned. |
| 194 | % |
anthony | 8a95e80 | 2013-04-10 05:31:57 +0000 | [diff] [blame^] | 195 | % The result will be auto-croped if the artifact "deskew:auto-crop" is |
| 196 | % defined, while the amount the image is to be deskewed, in degrees is also |
| 197 | % saved as the artifact "deskew:angle". |
| 198 | % |
| 199 | % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 200 | % The format of the DeskewImage method is: |
| 201 | % |
| 202 | % Image *DeskewImage(const Image *image,const double threshold, |
| 203 | % ExceptionInfo *exception) |
| 204 | % |
| 205 | % A description of each parameter follows: |
| 206 | % |
| 207 | % o image: the image. |
| 208 | % |
| 209 | % o threshold: separate background from foreground. |
| 210 | % |
| 211 | % o exception: return any errors or warnings in this structure. |
| 212 | % |
| 213 | */ |
| 214 | |
| 215 | typedef struct _RadonInfo |
| 216 | { |
| 217 | CacheType |
| 218 | type; |
| 219 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 220 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 221 | width, |
| 222 | height; |
| 223 | |
| 224 | MagickSizeType |
| 225 | length; |
| 226 | |
| 227 | MagickBooleanType |
| 228 | mapped; |
| 229 | |
| 230 | char |
| 231 | path[MaxTextExtent]; |
| 232 | |
| 233 | int |
| 234 | file; |
| 235 | |
| 236 | unsigned short |
| 237 | *cells; |
| 238 | } RadonInfo; |
| 239 | |
| 240 | static RadonInfo *DestroyRadonInfo(RadonInfo *radon_info) |
| 241 | { |
| 242 | assert(radon_info != (RadonInfo *) NULL); |
| 243 | switch (radon_info->type) |
| 244 | { |
| 245 | case MemoryCache: |
| 246 | { |
| 247 | if (radon_info->mapped == MagickFalse) |
| 248 | radon_info->cells=(unsigned short *) RelinquishMagickMemory( |
| 249 | radon_info->cells); |
| 250 | else |
| 251 | radon_info->cells=(unsigned short *) UnmapBlob(radon_info->cells, |
| 252 | (size_t) radon_info->length); |
| 253 | RelinquishMagickResource(MemoryResource,radon_info->length); |
| 254 | break; |
| 255 | } |
| 256 | case MapCache: |
| 257 | { |
| 258 | radon_info->cells=(unsigned short *) UnmapBlob(radon_info->cells,(size_t) |
| 259 | radon_info->length); |
| 260 | RelinquishMagickResource(MapResource,radon_info->length); |
| 261 | } |
| 262 | case DiskCache: |
| 263 | { |
| 264 | if (radon_info->file != -1) |
| 265 | (void) close(radon_info->file); |
| 266 | (void) RelinquishUniqueFileResource(radon_info->path); |
| 267 | RelinquishMagickResource(DiskResource,radon_info->length); |
| 268 | break; |
| 269 | } |
| 270 | default: |
| 271 | break; |
| 272 | } |
| 273 | return((RadonInfo *) RelinquishMagickMemory(radon_info)); |
| 274 | } |
| 275 | |
| 276 | static MagickBooleanType ResetRadonCells(RadonInfo *radon_info) |
| 277 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 278 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 279 | x; |
| 280 | |
| 281 | ssize_t |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 282 | count, |
| 283 | y; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 284 | |
| 285 | unsigned short |
| 286 | value; |
| 287 | |
| 288 | if (radon_info->type != DiskCache) |
| 289 | { |
| 290 | (void) ResetMagickMemory(radon_info->cells,0,(size_t) radon_info->length); |
| 291 | return(MagickTrue); |
| 292 | } |
| 293 | value=0; |
cristy | 7f31770 | 2011-02-18 20:40:28 +0000 | [diff] [blame] | 294 | (void) lseek(radon_info->file,0,SEEK_SET); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 295 | for (y=0; y < (ssize_t) radon_info->height; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 296 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 297 | for (x=0; x < (ssize_t) radon_info->width; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 298 | { |
| 299 | count=write(radon_info->file,&value,sizeof(*radon_info->cells)); |
| 300 | if (count != (ssize_t) sizeof(*radon_info->cells)) |
| 301 | break; |
| 302 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 303 | if (x < (ssize_t) radon_info->width) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 304 | break; |
| 305 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 306 | return(y < (ssize_t) radon_info->height ? MagickFalse : MagickTrue); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 307 | } |
| 308 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 309 | static RadonInfo *AcquireRadonInfo(const Image *image,const size_t width, |
| 310 | const size_t height,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 311 | { |
| 312 | MagickBooleanType |
| 313 | status; |
| 314 | |
| 315 | RadonInfo |
| 316 | *radon_info; |
| 317 | |
cristy | 73bd4a5 | 2010-10-05 11:24:23 +0000 | [diff] [blame] | 318 | radon_info=(RadonInfo *) AcquireMagickMemory(sizeof(*radon_info)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 319 | if (radon_info == (RadonInfo *) NULL) |
| 320 | return((RadonInfo *) NULL); |
| 321 | (void) ResetMagickMemory(radon_info,0,sizeof(*radon_info)); |
| 322 | radon_info->width=width; |
| 323 | radon_info->height=height; |
| 324 | radon_info->length=(MagickSizeType) width*height*sizeof(*radon_info->cells); |
| 325 | radon_info->type=MemoryCache; |
| 326 | status=AcquireMagickResource(AreaResource,radon_info->length); |
| 327 | if ((status != MagickFalse) && |
| 328 | (radon_info->length == (MagickSizeType) ((size_t) radon_info->length))) |
| 329 | { |
| 330 | status=AcquireMagickResource(MemoryResource,radon_info->length); |
| 331 | if (status != MagickFalse) |
| 332 | { |
| 333 | radon_info->mapped=MagickFalse; |
| 334 | radon_info->cells=(unsigned short *) AcquireMagickMemory((size_t) |
| 335 | radon_info->length); |
| 336 | if (radon_info->cells == (unsigned short *) NULL) |
| 337 | { |
| 338 | radon_info->mapped=MagickTrue; |
| 339 | radon_info->cells=(unsigned short *) MapBlob(-1,IOMode,0,(size_t) |
| 340 | radon_info->length); |
| 341 | } |
| 342 | if (radon_info->cells == (unsigned short *) NULL) |
| 343 | RelinquishMagickResource(MemoryResource,radon_info->length); |
| 344 | } |
| 345 | } |
| 346 | radon_info->file=(-1); |
| 347 | if (radon_info->cells == (unsigned short *) NULL) |
| 348 | { |
| 349 | status=AcquireMagickResource(DiskResource,radon_info->length); |
| 350 | if (status == MagickFalse) |
| 351 | { |
| 352 | (void) ThrowMagickException(exception,GetMagickModule(),CacheError, |
cristy | efe601c | 2013-01-05 17:51:12 +0000 | [diff] [blame] | 353 | "CacheResourcesExhausted","`%s'",image->filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 354 | return(DestroyRadonInfo(radon_info)); |
| 355 | } |
| 356 | radon_info->type=DiskCache; |
| 357 | (void) AcquireMagickResource(MemoryResource,radon_info->length); |
| 358 | radon_info->file=AcquireUniqueFileResource(radon_info->path); |
| 359 | if (radon_info->file == -1) |
| 360 | return(DestroyRadonInfo(radon_info)); |
| 361 | status=AcquireMagickResource(MapResource,radon_info->length); |
| 362 | if (status != MagickFalse) |
| 363 | { |
| 364 | status=ResetRadonCells(radon_info); |
| 365 | if (status != MagickFalse) |
| 366 | { |
| 367 | radon_info->cells=(unsigned short *) MapBlob(radon_info->file, |
| 368 | IOMode,0,(size_t) radon_info->length); |
| 369 | if (radon_info->cells != (unsigned short *) NULL) |
| 370 | radon_info->type=MapCache; |
| 371 | else |
| 372 | RelinquishMagickResource(MapResource,radon_info->length); |
| 373 | } |
| 374 | } |
| 375 | } |
| 376 | return(radon_info); |
| 377 | } |
| 378 | |
| 379 | static inline size_t MagickMin(const size_t x,const size_t y) |
| 380 | { |
| 381 | if (x < y) |
| 382 | return(x); |
| 383 | return(y); |
| 384 | } |
| 385 | |
| 386 | static inline ssize_t ReadRadonCell(const RadonInfo *radon_info, |
cristy | 2c38b27 | 2011-02-18 23:25:33 +0000 | [diff] [blame] | 387 | const MagickOffsetType offset,const size_t length,unsigned char *buffer) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 388 | { |
| 389 | register ssize_t |
| 390 | i; |
| 391 | |
| 392 | ssize_t |
| 393 | count; |
| 394 | |
| 395 | #if !defined(MAGICKCORE_HAVE_PPREAD) |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 396 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 397 | #pragma omp critical (MagickCore_ReadRadonCell) |
| 398 | #endif |
| 399 | { |
| 400 | i=(-1); |
cristy | 7f31770 | 2011-02-18 20:40:28 +0000 | [diff] [blame] | 401 | if (lseek(radon_info->file,offset,SEEK_SET) >= 0) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 402 | { |
| 403 | #endif |
| 404 | count=0; |
| 405 | for (i=0; i < (ssize_t) length; i+=count) |
| 406 | { |
| 407 | #if !defined(MAGICKCORE_HAVE_PPREAD) |
| 408 | count=read(radon_info->file,buffer+i,MagickMin(length-i,(size_t) |
| 409 | SSIZE_MAX)); |
| 410 | #else |
| 411 | count=pread(radon_info->file,buffer+i,MagickMin(length-i,(size_t) |
cristy | 2c38b27 | 2011-02-18 23:25:33 +0000 | [diff] [blame] | 412 | SSIZE_MAX),offset+i); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 413 | #endif |
| 414 | if (count > 0) |
| 415 | continue; |
| 416 | count=0; |
| 417 | if (errno != EINTR) |
| 418 | { |
| 419 | i=(-1); |
| 420 | break; |
| 421 | } |
| 422 | } |
| 423 | #if !defined(MAGICKCORE_HAVE_PPREAD) |
| 424 | } |
| 425 | } |
| 426 | #endif |
| 427 | return(i); |
| 428 | } |
| 429 | |
| 430 | static inline ssize_t WriteRadonCell(const RadonInfo *radon_info, |
cristy | 2c38b27 | 2011-02-18 23:25:33 +0000 | [diff] [blame] | 431 | const MagickOffsetType offset,const size_t length,const unsigned char *buffer) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 432 | { |
| 433 | register ssize_t |
| 434 | i; |
| 435 | |
| 436 | ssize_t |
| 437 | count; |
| 438 | |
| 439 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 440 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 441 | #pragma omp critical (MagickCore_WriteRadonCell) |
| 442 | #endif |
| 443 | { |
cristy | 7f31770 | 2011-02-18 20:40:28 +0000 | [diff] [blame] | 444 | if (lseek(radon_info->file,offset,SEEK_SET) >= 0) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 445 | { |
| 446 | #endif |
| 447 | count=0; |
| 448 | for (i=0; i < (ssize_t) length; i+=count) |
| 449 | { |
| 450 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
| 451 | count=write(radon_info->file,buffer+i,MagickMin(length-i,(size_t) |
| 452 | SSIZE_MAX)); |
| 453 | #else |
| 454 | count=pwrite(radon_info->file,buffer+i,MagickMin(length-i,(size_t) |
cristy | 2c38b27 | 2011-02-18 23:25:33 +0000 | [diff] [blame] | 455 | SSIZE_MAX),offset+i); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 456 | #endif |
| 457 | if (count > 0) |
| 458 | continue; |
| 459 | count=0; |
| 460 | if (errno != EINTR) |
| 461 | { |
| 462 | i=(-1); |
| 463 | break; |
| 464 | } |
| 465 | } |
| 466 | #if !defined(MAGICKCORE_HAVE_PWRITE) |
| 467 | } |
| 468 | } |
| 469 | #endif |
| 470 | return(i); |
| 471 | } |
| 472 | |
| 473 | static inline unsigned short GetRadonCell(const RadonInfo *radon_info, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 474 | const ssize_t x,const ssize_t y) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 475 | { |
cristy | 2c38b27 | 2011-02-18 23:25:33 +0000 | [diff] [blame] | 476 | MagickOffsetType |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 477 | i; |
| 478 | |
| 479 | unsigned short |
| 480 | value; |
| 481 | |
cristy | 2c38b27 | 2011-02-18 23:25:33 +0000 | [diff] [blame] | 482 | i=(MagickOffsetType) radon_info->height*x+y; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 483 | if ((i < 0) || |
| 484 | ((MagickSizeType) (i*sizeof(*radon_info->cells)) >= radon_info->length)) |
| 485 | return(0); |
| 486 | if (radon_info->type != DiskCache) |
| 487 | return(radon_info->cells[i]); |
| 488 | value=0; |
| 489 | (void) ReadRadonCell(radon_info,i*sizeof(*radon_info->cells), |
| 490 | sizeof(*radon_info->cells),(unsigned char *) &value); |
| 491 | return(value); |
| 492 | } |
| 493 | |
| 494 | static inline MagickBooleanType SetRadonCell(const RadonInfo *radon_info, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 495 | const ssize_t x,const ssize_t y,const unsigned short value) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 496 | { |
cristy | 2c38b27 | 2011-02-18 23:25:33 +0000 | [diff] [blame] | 497 | MagickOffsetType |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 498 | i; |
| 499 | |
| 500 | ssize_t |
| 501 | count; |
| 502 | |
cristy | 2c38b27 | 2011-02-18 23:25:33 +0000 | [diff] [blame] | 503 | i=(MagickOffsetType) radon_info->height*x+y; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 504 | if ((i < 0) || |
| 505 | ((MagickSizeType) (i*sizeof(*radon_info->cells)) >= radon_info->length)) |
| 506 | return(MagickFalse); |
| 507 | if (radon_info->type != DiskCache) |
| 508 | { |
| 509 | radon_info->cells[i]=value; |
| 510 | return(MagickTrue); |
| 511 | } |
| 512 | count=WriteRadonCell(radon_info,i*sizeof(*radon_info->cells), |
cristy | 44807bb | 2009-09-19 18:28:06 +0000 | [diff] [blame] | 513 | sizeof(*radon_info->cells),(const unsigned char *) &value); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 514 | if (count != (ssize_t) sizeof(*radon_info->cells)) |
| 515 | return(MagickFalse); |
| 516 | return(MagickTrue); |
| 517 | } |
| 518 | |
cristy | 4ee2b0c | 2012-05-15 00:30:35 +0000 | [diff] [blame] | 519 | static void RadonProjection(const Image *image,RadonInfo *source_cells, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 520 | RadonInfo *destination_cells,const ssize_t sign,size_t *projection) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 521 | { |
| 522 | RadonInfo |
| 523 | *swap; |
| 524 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 525 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 526 | x; |
| 527 | |
| 528 | register RadonInfo |
| 529 | *p, |
| 530 | *q; |
| 531 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 532 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 533 | step; |
| 534 | |
| 535 | p=source_cells; |
| 536 | q=destination_cells; |
| 537 | for (step=1; step < p->width; step*=2) |
| 538 | { |
cristy | eaedf06 | 2010-05-29 22:36:02 +0000 | [diff] [blame] | 539 | for (x=0; x < (ssize_t) p->width; x+=2*(ssize_t) step) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 540 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 541 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 542 | i; |
| 543 | |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 544 | ssize_t |
| 545 | y; |
| 546 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 547 | unsigned short |
| 548 | cell; |
| 549 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 550 | for (i=0; i < (ssize_t) step; i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 551 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 552 | for (y=0; y < (ssize_t) (p->height-i-1); y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 553 | { |
| 554 | cell=GetRadonCell(p,x+i,y); |
cristy | eaedf06 | 2010-05-29 22:36:02 +0000 | [diff] [blame] | 555 | (void) SetRadonCell(q,x+2*i,y,cell+GetRadonCell(p,x+i+(ssize_t) |
| 556 | step,y+i)); |
| 557 | (void) SetRadonCell(q,x+2*i+1,y,cell+GetRadonCell(p,x+i+(ssize_t) |
| 558 | step,y+i+1)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 559 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 560 | for ( ; y < (ssize_t) (p->height-i); y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 561 | { |
| 562 | cell=GetRadonCell(p,x+i,y); |
cristy | eaedf06 | 2010-05-29 22:36:02 +0000 | [diff] [blame] | 563 | (void) SetRadonCell(q,x+2*i,y,cell+GetRadonCell(p,x+i+(ssize_t) step, |
| 564 | y+i)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 565 | (void) SetRadonCell(q,x+2*i+1,y,cell); |
| 566 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 567 | for ( ; y < (ssize_t) p->height; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 568 | { |
| 569 | cell=GetRadonCell(p,x+i,y); |
| 570 | (void) SetRadonCell(q,x+2*i,y,cell); |
| 571 | (void) SetRadonCell(q,x+2*i+1,y,cell); |
| 572 | } |
| 573 | } |
| 574 | } |
| 575 | swap=p; |
| 576 | p=q; |
| 577 | q=swap; |
| 578 | } |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 579 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | ac245f8 | 2012-05-05 17:13:57 +0000 | [diff] [blame] | 580 | #pragma omp parallel for schedule(static,4) \ |
cristy | cb7dfcc | 2013-01-06 18:34:59 +0000 | [diff] [blame] | 581 | magick_threads(image,image,1,1) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 582 | #endif |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 583 | for (x=0; x < (ssize_t) p->width; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 584 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 585 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 586 | y; |
| 587 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 588 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 589 | sum; |
| 590 | |
| 591 | sum=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 592 | for (y=0; y < (ssize_t) (p->height-1); y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 593 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 594 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 595 | delta; |
| 596 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 597 | delta=GetRadonCell(p,x,y)-(ssize_t) GetRadonCell(p,x,y+1); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 598 | sum+=delta*delta; |
| 599 | } |
| 600 | projection[p->width+sign*x-1]=sum; |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | static MagickBooleanType RadonTransform(const Image *image, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 605 | const double threshold,size_t *projection,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 606 | { |
| 607 | CacheView |
| 608 | *image_view; |
| 609 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 610 | MagickBooleanType |
| 611 | status; |
| 612 | |
| 613 | RadonInfo |
| 614 | *destination_cells, |
| 615 | *source_cells; |
| 616 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 617 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 618 | i; |
| 619 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 620 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 621 | count, |
| 622 | width; |
| 623 | |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 624 | ssize_t |
| 625 | y; |
| 626 | |
| 627 | unsigned char |
| 628 | byte; |
| 629 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 630 | unsigned short |
| 631 | bits[256]; |
| 632 | |
| 633 | for (width=1; width < ((image->columns+7)/8); width<<=1) ; |
| 634 | source_cells=AcquireRadonInfo(image,width,image->rows,exception); |
| 635 | destination_cells=AcquireRadonInfo(image,width,image->rows,exception); |
| 636 | if ((source_cells == (RadonInfo *) NULL) || |
| 637 | (destination_cells == (RadonInfo *) NULL)) |
| 638 | { |
| 639 | if (destination_cells != (RadonInfo *) NULL) |
| 640 | destination_cells=DestroyRadonInfo(destination_cells); |
| 641 | if (source_cells != (RadonInfo *) NULL) |
| 642 | source_cells=DestroyRadonInfo(source_cells); |
| 643 | return(MagickFalse); |
| 644 | } |
| 645 | if (ResetRadonCells(source_cells) == MagickFalse) |
| 646 | { |
| 647 | destination_cells=DestroyRadonInfo(destination_cells); |
| 648 | source_cells=DestroyRadonInfo(source_cells); |
| 649 | return(MagickFalse); |
| 650 | } |
| 651 | for (i=0; i < 256; i++) |
| 652 | { |
| 653 | byte=(unsigned char) i; |
| 654 | for (count=0; byte != 0; byte>>=1) |
| 655 | count+=byte & 0x01; |
| 656 | bits[i]=(unsigned short) count; |
| 657 | } |
| 658 | status=MagickTrue; |
cristy | 46ff267 | 2012-12-14 15:32:26 +0000 | [diff] [blame] | 659 | image_view=AcquireVirtualCacheView(image,exception); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 660 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | ac245f8 | 2012-05-05 17:13:57 +0000 | [diff] [blame] | 661 | #pragma omp parallel for schedule(static,4) shared(status) \ |
cristy | 5e6b259 | 2012-12-19 14:08:11 +0000 | [diff] [blame] | 662 | magick_threads(image,image,image->rows,1) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 663 | #endif |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 664 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 665 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 666 | register const Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 667 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 668 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 669 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 670 | i, |
| 671 | x; |
| 672 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 673 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 674 | bit, |
| 675 | byte; |
| 676 | |
| 677 | if (status == MagickFalse) |
| 678 | continue; |
| 679 | p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 680 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 681 | { |
| 682 | status=MagickFalse; |
| 683 | continue; |
| 684 | } |
| 685 | bit=0; |
| 686 | byte=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 687 | i=(ssize_t) (image->columns+7)/8; |
| 688 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 689 | { |
| 690 | byte<<=1; |
cristy | f13c594 | 2012-08-08 23:50:11 +0000 | [diff] [blame] | 691 | if (GetPixelIntensity(image,p) < threshold) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 692 | byte|=0x01; |
| 693 | bit++; |
| 694 | if (bit == 8) |
| 695 | { |
| 696 | (void) SetRadonCell(source_cells,--i,y,bits[byte]); |
| 697 | bit=0; |
| 698 | byte=0; |
| 699 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 700 | p+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 701 | } |
| 702 | if (bit != 0) |
| 703 | { |
| 704 | byte<<=(8-bit); |
| 705 | (void) SetRadonCell(source_cells,--i,y,bits[byte]); |
| 706 | } |
| 707 | } |
cristy | 4ee2b0c | 2012-05-15 00:30:35 +0000 | [diff] [blame] | 708 | RadonProjection(image,source_cells,destination_cells,-1,projection); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 709 | (void) ResetRadonCells(source_cells); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 710 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | ac245f8 | 2012-05-05 17:13:57 +0000 | [diff] [blame] | 711 | #pragma omp parallel for schedule(static,4) shared(status) \ |
cristy | cb7dfcc | 2013-01-06 18:34:59 +0000 | [diff] [blame] | 712 | magick_threads(image,image,1,1) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 713 | #endif |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 714 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 715 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 716 | register const Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 717 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 718 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 719 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 720 | i, |
| 721 | x; |
| 722 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 723 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 724 | bit, |
| 725 | byte; |
| 726 | |
| 727 | if (status == MagickFalse) |
| 728 | continue; |
| 729 | p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 730 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 731 | { |
| 732 | status=MagickFalse; |
| 733 | continue; |
| 734 | } |
| 735 | bit=0; |
| 736 | byte=0; |
| 737 | i=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 738 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 739 | { |
| 740 | byte<<=1; |
cristy | f13c594 | 2012-08-08 23:50:11 +0000 | [diff] [blame] | 741 | if (GetPixelIntensity(image,p) < threshold) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 742 | byte|=0x01; |
| 743 | bit++; |
| 744 | if (bit == 8) |
| 745 | { |
| 746 | (void) SetRadonCell(source_cells,i++,y,bits[byte]); |
| 747 | bit=0; |
| 748 | byte=0; |
| 749 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 750 | p+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 751 | } |
| 752 | if (bit != 0) |
| 753 | { |
| 754 | byte<<=(8-bit); |
| 755 | (void) SetRadonCell(source_cells,i++,y,bits[byte]); |
| 756 | } |
| 757 | } |
cristy | 4ee2b0c | 2012-05-15 00:30:35 +0000 | [diff] [blame] | 758 | RadonProjection(image,source_cells,destination_cells,1,projection); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 759 | image_view=DestroyCacheView(image_view); |
| 760 | destination_cells=DestroyRadonInfo(destination_cells); |
| 761 | source_cells=DestroyRadonInfo(source_cells); |
| 762 | return(MagickTrue); |
| 763 | } |
| 764 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 765 | static void GetImageBackgroundColor(Image *image,const ssize_t offset, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 766 | ExceptionInfo *exception) |
| 767 | { |
| 768 | CacheView |
| 769 | *image_view; |
| 770 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 771 | PixelInfo |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 772 | background; |
| 773 | |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 774 | double |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 775 | count; |
| 776 | |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 777 | ssize_t |
| 778 | y; |
| 779 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 780 | /* |
| 781 | Compute average background color. |
| 782 | */ |
| 783 | if (offset <= 0) |
| 784 | return; |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 785 | GetPixelInfo(image,&background); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 786 | count=0.0; |
cristy | 46ff267 | 2012-12-14 15:32:26 +0000 | [diff] [blame] | 787 | image_view=AcquireVirtualCacheView(image,exception); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 788 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 789 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 790 | register const Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 791 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 792 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 793 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 794 | x; |
| 795 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 796 | if ((y >= offset) && (y < ((ssize_t) image->rows-offset))) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 797 | continue; |
| 798 | p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 799 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 800 | continue; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 801 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 802 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 803 | if ((x >= offset) && (x < ((ssize_t) image->columns-offset))) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 804 | continue; |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 805 | background.red+=QuantumScale*GetPixelRed(image,p); |
| 806 | background.green+=QuantumScale*GetPixelGreen(image,p); |
| 807 | background.blue+=QuantumScale*GetPixelBlue(image,p); |
cristy | 2629532 | 2011-09-22 00:50:36 +0000 | [diff] [blame] | 808 | if ((GetPixelAlphaTraits(image) & UpdatePixelTrait) != 0) |
| 809 | background.alpha+=QuantumScale*GetPixelAlpha(image,p); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 810 | count++; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 811 | p+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 812 | } |
| 813 | } |
| 814 | image_view=DestroyCacheView(image_view); |
cristy | 8cd03c3 | 2012-07-07 18:57:59 +0000 | [diff] [blame] | 815 | image->background_color.red=(double) ClampToQuantum(QuantumRange* |
| 816 | background.red/count); |
| 817 | image->background_color.green=(double) ClampToQuantum(QuantumRange* |
| 818 | background.green/count); |
| 819 | image->background_color.blue=(double) ClampToQuantum(QuantumRange* |
| 820 | background.blue/count); |
cristy | 2629532 | 2011-09-22 00:50:36 +0000 | [diff] [blame] | 821 | if ((GetPixelAlphaTraits(image) & UpdatePixelTrait) != 0) |
cristy | 8cd03c3 | 2012-07-07 18:57:59 +0000 | [diff] [blame] | 822 | image->background_color.alpha=(double) ClampToQuantum(QuantumRange* |
| 823 | background.alpha/count); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 824 | } |
| 825 | |
| 826 | MagickExport Image *DeskewImage(const Image *image,const double threshold, |
| 827 | ExceptionInfo *exception) |
| 828 | { |
| 829 | AffineMatrix |
| 830 | affine_matrix; |
| 831 | |
| 832 | const char |
| 833 | *artifact; |
| 834 | |
| 835 | double |
| 836 | degrees; |
| 837 | |
| 838 | Image |
| 839 | *clone_image, |
| 840 | *crop_image, |
| 841 | *deskew_image, |
| 842 | *median_image; |
| 843 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 844 | MagickBooleanType |
| 845 | status; |
| 846 | |
| 847 | RectangleInfo |
| 848 | geometry; |
| 849 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 850 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 851 | i; |
| 852 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 853 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 854 | max_projection, |
| 855 | *projection, |
| 856 | width; |
| 857 | |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 858 | ssize_t |
| 859 | skew; |
| 860 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 861 | /* |
| 862 | Compute deskew angle. |
| 863 | */ |
| 864 | for (width=1; width < ((image->columns+7)/8); width<<=1) ; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 865 | projection=(size_t *) AcquireQuantumMemory((size_t) (2*width-1), |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 866 | sizeof(*projection)); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 867 | if (projection == (size_t *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 868 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 869 | status=RadonTransform(image,threshold,projection,exception); |
| 870 | if (status == MagickFalse) |
| 871 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 872 | projection=(size_t *) RelinquishMagickMemory(projection); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 873 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 874 | } |
| 875 | max_projection=0; |
| 876 | skew=0; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 877 | for (i=0; i < (ssize_t) (2*width-1); i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 878 | { |
| 879 | if (projection[i] > max_projection) |
| 880 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 881 | skew=i-(ssize_t) width+1; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 882 | max_projection=projection[i]; |
| 883 | } |
| 884 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 885 | projection=(size_t *) RelinquishMagickMemory(projection); |
anthony | 553bfcc | 2013-04-10 01:27:43 +0000 | [diff] [blame] | 886 | degrees=RadiansToDegrees(-atan((double) skew/width/8)); |
| 887 | if (image->debug != MagickFalse) |
| 888 | (void) LogMagickEvent(TransformEvent,GetMagickModule(), |
| 889 | " Deskew angle: %g",degrees); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 890 | /* |
| 891 | Deskew image. |
| 892 | */ |
| 893 | clone_image=CloneImage(image,0,0,MagickTrue,exception); |
| 894 | if (clone_image == (Image *) NULL) |
| 895 | return((Image *) NULL); |
anthony | 8a95e80 | 2013-04-10 05:31:57 +0000 | [diff] [blame^] | 896 | { |
| 897 | char |
| 898 | angle[MaxTextExtent]; |
| 899 | |
| 900 | (void) FormatLocaleString(angle,MaxTextExtent,"%.20g",degrees); |
| 901 | (void) SetImageArtifact(clone_image,"deskew:angle",angle); |
| 902 | } |
cristy | 387430f | 2012-02-07 13:09:46 +0000 | [diff] [blame] | 903 | (void) SetImageVirtualPixelMethod(clone_image,BackgroundVirtualPixelMethod, |
| 904 | exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 905 | affine_matrix.sx=cos(DegreesToRadians(fmod((double) degrees,360.0))); |
| 906 | affine_matrix.rx=sin(DegreesToRadians(fmod((double) degrees,360.0))); |
| 907 | affine_matrix.ry=(-sin(DegreesToRadians(fmod((double) degrees,360.0)))); |
| 908 | affine_matrix.sy=cos(DegreesToRadians(fmod((double) degrees,360.0))); |
| 909 | affine_matrix.tx=0.0; |
| 910 | affine_matrix.ty=0.0; |
| 911 | artifact=GetImageArtifact(image,"deskew:auto-crop"); |
| 912 | if (artifact == (const char *) NULL) |
| 913 | { |
| 914 | deskew_image=AffineTransformImage(clone_image,&affine_matrix,exception); |
| 915 | clone_image=DestroyImage(clone_image); |
| 916 | return(deskew_image); |
| 917 | } |
| 918 | /* |
| 919 | Auto-crop image. |
| 920 | */ |
cristy | ba978e1 | 2010-09-12 20:26:50 +0000 | [diff] [blame] | 921 | GetImageBackgroundColor(clone_image,(ssize_t) StringToLong(artifact), |
| 922 | exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 923 | deskew_image=AffineTransformImage(clone_image,&affine_matrix,exception); |
| 924 | clone_image=DestroyImage(clone_image); |
| 925 | if (deskew_image == (Image *) NULL) |
| 926 | return((Image *) NULL); |
cristy | 95c3834 | 2011-03-18 22:39:51 +0000 | [diff] [blame] | 927 | median_image=StatisticImage(deskew_image,MedianStatistic,3,3,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 928 | if (median_image == (Image *) NULL) |
| 929 | { |
| 930 | deskew_image=DestroyImage(deskew_image); |
| 931 | return((Image *) NULL); |
| 932 | } |
| 933 | geometry=GetImageBoundingBox(median_image,exception); |
| 934 | median_image=DestroyImage(median_image); |
| 935 | if (image->debug != MagickFalse) |
| 936 | (void) LogMagickEvent(TransformEvent,GetMagickModule()," Deskew geometry: " |
cristy | 6d8abba | 2010-06-03 01:10:47 +0000 | [diff] [blame] | 937 | "%.20gx%.20g%+.20g%+.20g",(double) geometry.width,(double) |
cristy | e8c25f9 | 2010-06-03 00:53:06 +0000 | [diff] [blame] | 938 | geometry.height,(double) geometry.x,(double) geometry.y); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 939 | crop_image=CropImage(deskew_image,&geometry,exception); |
| 940 | deskew_image=DestroyImage(deskew_image); |
| 941 | return(crop_image); |
| 942 | } |
| 943 | |
| 944 | /* |
| 945 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 946 | % % |
| 947 | % % |
| 948 | % % |
cristy | 987feef | 2011-11-17 12:24:56 +0000 | [diff] [blame] | 949 | % I n t e g r a l R o t a t e I m a g e % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 950 | % % |
| 951 | % % |
| 952 | % % |
| 953 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 954 | % |
cristy | 3dfa16c | 2010-05-17 19:34:48 +0000 | [diff] [blame] | 955 | % IntegralRotateImage() rotates the image an integral of 90 degrees. It |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 956 | % allocates the memory necessary for the new Image structure and returns a |
| 957 | % pointer to the rotated image. |
| 958 | % |
| 959 | % The format of the IntegralRotateImage method is: |
| 960 | % |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 961 | % Image *IntegralRotateImage(const Image *image,size_t rotations, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 962 | % ExceptionInfo *exception) |
| 963 | % |
| 964 | % A description of each parameter follows. |
| 965 | % |
| 966 | % o image: the image. |
| 967 | % |
| 968 | % o rotations: Specifies the number of 90 degree rotations. |
| 969 | % |
| 970 | */ |
cristy | 987feef | 2011-11-17 12:24:56 +0000 | [diff] [blame] | 971 | MagickExport Image *IntegralRotateImage(const Image *image,size_t rotations, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 972 | ExceptionInfo *exception) |
| 973 | { |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 974 | #define RotateImageTag "Rotate/Image" |
| 975 | |
| 976 | CacheView |
| 977 | *image_view, |
| 978 | *rotate_view; |
| 979 | |
| 980 | Image |
| 981 | *rotate_image; |
| 982 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 983 | MagickBooleanType |
| 984 | status; |
| 985 | |
cristy | 5f95947 | 2010-05-27 22:19:46 +0000 | [diff] [blame] | 986 | MagickOffsetType |
| 987 | progress; |
| 988 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 989 | RectangleInfo |
| 990 | page; |
| 991 | |
cristy | 5f95947 | 2010-05-27 22:19:46 +0000 | [diff] [blame] | 992 | ssize_t |
| 993 | y; |
| 994 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 995 | /* |
| 996 | Initialize rotated image attributes. |
| 997 | */ |
| 998 | assert(image != (Image *) NULL); |
| 999 | page=image->page; |
| 1000 | rotations%=4; |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1001 | if (rotations == 0) |
| 1002 | return(CloneImage(image,0,0,MagickTrue,exception)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1003 | if ((rotations == 1) || (rotations == 3)) |
| 1004 | rotate_image=CloneImage(image,image->rows,image->columns,MagickTrue, |
| 1005 | exception); |
| 1006 | else |
| 1007 | rotate_image=CloneImage(image,image->columns,image->rows,MagickTrue, |
| 1008 | exception); |
| 1009 | if (rotate_image == (Image *) NULL) |
| 1010 | return((Image *) NULL); |
| 1011 | /* |
| 1012 | Integral rotate the image. |
| 1013 | */ |
| 1014 | status=MagickTrue; |
| 1015 | progress=0; |
cristy | 46ff267 | 2012-12-14 15:32:26 +0000 | [diff] [blame] | 1016 | image_view=AcquireVirtualCacheView(image,exception); |
| 1017 | rotate_view=AcquireAuthenticCacheView(rotate_image,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1018 | switch (rotations) |
| 1019 | { |
| 1020 | case 0: |
| 1021 | { |
| 1022 | /* |
| 1023 | Rotate 0 degrees. |
| 1024 | */ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1025 | break; |
| 1026 | } |
| 1027 | case 1: |
| 1028 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1029 | size_t |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1030 | tile_height, |
| 1031 | tile_width; |
| 1032 | |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 1033 | ssize_t |
| 1034 | tile_y; |
| 1035 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1036 | /* |
| 1037 | Rotate 90 degrees. |
| 1038 | */ |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1039 | GetPixelCacheTileSize(image,&tile_width,&tile_height); |
cristy | 8b8148b | 2012-10-07 00:41:15 +0000 | [diff] [blame] | 1040 | tile_width=image->columns; |
cristy | 26b6491 | 2012-12-16 18:20:09 +0000 | [diff] [blame] | 1041 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 64c10cd | 2013-01-06 18:40:43 +0000 | [diff] [blame] | 1042 | #pragma omp parallel for schedule(static,4) shared(status) \ |
cristy | 3e1fa37 | 2013-01-06 18:07:11 +0000 | [diff] [blame] | 1043 | magick_threads(image,image,1,1) |
cristy | 9a5a52f | 2012-10-09 14:40:31 +0000 | [diff] [blame] | 1044 | #endif |
cristy | ad11aac | 2011-09-25 21:29:16 +0000 | [diff] [blame] | 1045 | for (tile_y=0; tile_y < (ssize_t) image->rows; tile_y+=(ssize_t) tile_height) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1046 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1047 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1048 | tile_x; |
| 1049 | |
| 1050 | if (status == MagickFalse) |
| 1051 | continue; |
cristy | 2629532 | 2011-09-22 00:50:36 +0000 | [diff] [blame] | 1052 | tile_x=0; |
| 1053 | for ( ; tile_x < (ssize_t) image->columns; tile_x+=(ssize_t) tile_width) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1054 | { |
| 1055 | MagickBooleanType |
| 1056 | sync; |
| 1057 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1058 | register const Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1059 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1060 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1061 | register Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1062 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1063 | |
cristy | a26211e | 2011-10-09 01:24:57 +0000 | [diff] [blame] | 1064 | register ssize_t |
| 1065 | y; |
| 1066 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1067 | size_t |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1068 | height, |
| 1069 | width; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1070 | |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1071 | width=tile_width; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1072 | if ((tile_x+(ssize_t) tile_width) > (ssize_t) image->columns) |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1073 | width=(size_t) (tile_width-(tile_x+tile_width-image->columns)); |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1074 | height=tile_height; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1075 | if ((tile_y+(ssize_t) tile_height) > (ssize_t) image->rows) |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1076 | height=(size_t) (tile_height-(tile_y+tile_height-image->rows)); |
cristy | daa9769 | 2009-09-13 02:10:35 +0000 | [diff] [blame] | 1077 | p=GetCacheViewVirtualPixels(image_view,tile_x,tile_y,width,height, |
| 1078 | exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1079 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1080 | { |
| 1081 | status=MagickFalse; |
| 1082 | break; |
| 1083 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1084 | for (y=0; y < (ssize_t) width; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1085 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1086 | register const Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1087 | *restrict tile_pixels; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1088 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1089 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1090 | x; |
| 1091 | |
cristy | 27709ef | 2011-09-18 02:53:53 +0000 | [diff] [blame] | 1092 | if (status == MagickFalse) |
| 1093 | continue; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1094 | q=QueueCacheViewAuthenticPixels(rotate_view,(ssize_t) |
cristy | 9261157 | 2011-07-07 16:02:42 +0000 | [diff] [blame] | 1095 | (rotate_image->columns-(tile_y+height)),y+tile_x,height,1, |
| 1096 | exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 1097 | if (q == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1098 | { |
| 1099 | status=MagickFalse; |
cristy | 27709ef | 2011-09-18 02:53:53 +0000 | [diff] [blame] | 1100 | continue; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1101 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1102 | tile_pixels=p+((height-1)*width+y)*GetPixelChannels(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1103 | for (x=0; x < (ssize_t) height; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1104 | { |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1105 | register ssize_t |
| 1106 | i; |
| 1107 | |
cristy | 883fde1 | 2013-04-08 00:50:13 +0000 | [diff] [blame] | 1108 | if (GetPixelReadMask(image,tile_pixels) == 0) |
cristy | 10a6c61 | 2012-01-29 21:41:05 +0000 | [diff] [blame] | 1109 | { |
| 1110 | tile_pixels-=width*GetPixelChannels(image); |
| 1111 | q+=GetPixelChannels(rotate_image); |
| 1112 | continue; |
| 1113 | } |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1114 | for (i=0; i < (ssize_t) GetPixelChannels(image); i++) |
| 1115 | { |
cristy | 5a23c55 | 2013-02-13 14:34:28 +0000 | [diff] [blame] | 1116 | PixelChannel channel=GetPixelChannelChannel(image,i); |
| 1117 | PixelTrait traits=GetPixelChannelTraits(image,channel); |
| 1118 | PixelTrait rotate_traits=GetPixelChannelTraits(rotate_image, |
| 1119 | channel); |
cristy | 010d7d1 | 2011-08-31 01:02:48 +0000 | [diff] [blame] | 1120 | if ((traits == UndefinedPixelTrait) || |
| 1121 | (rotate_traits == UndefinedPixelTrait)) |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1122 | continue; |
cristy | 0beccfa | 2011-09-25 20:47:53 +0000 | [diff] [blame] | 1123 | SetPixelChannel(rotate_image,channel,tile_pixels[i],q); |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1124 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1125 | tile_pixels-=width*GetPixelChannels(image); |
| 1126 | q+=GetPixelChannels(rotate_image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1127 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1128 | sync=SyncCacheViewAuthenticPixels(rotate_view,exception); |
| 1129 | if (sync == MagickFalse) |
| 1130 | status=MagickFalse; |
| 1131 | } |
| 1132 | } |
| 1133 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1134 | { |
| 1135 | MagickBooleanType |
| 1136 | proceed; |
| 1137 | |
cristy | 26b6491 | 2012-12-16 18:20:09 +0000 | [diff] [blame] | 1138 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 9a5a52f | 2012-10-09 14:40:31 +0000 | [diff] [blame] | 1139 | #pragma omp critical (MagickCore_IntegralRotateImage) |
| 1140 | #endif |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1141 | proceed=SetImageProgress(image,RotateImageTag,progress+=tile_height, |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1142 | image->rows); |
| 1143 | if (proceed == MagickFalse) |
| 1144 | status=MagickFalse; |
| 1145 | } |
| 1146 | } |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 1147 | (void) SetImageProgress(image,RotateImageTag,(MagickOffsetType) |
| 1148 | image->rows-1,image->rows); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1149 | Swap(page.width,page.height); |
| 1150 | Swap(page.x,page.y); |
| 1151 | if (page.width != 0) |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1152 | page.x=(ssize_t) (page.width-rotate_image->columns-page.x); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1153 | break; |
| 1154 | } |
| 1155 | case 2: |
| 1156 | { |
| 1157 | /* |
| 1158 | Rotate 180 degrees. |
| 1159 | */ |
cristy | 5f89061 | 2012-12-16 23:34:05 +0000 | [diff] [blame] | 1160 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 64c10cd | 2013-01-06 18:40:43 +0000 | [diff] [blame] | 1161 | #pragma omp parallel for schedule(static,4) shared(status) \ |
cristy | d643247 | 2013-01-06 16:56:13 +0000 | [diff] [blame] | 1162 | magick_threads(image,image,1,1) |
cristy | 5f89061 | 2012-12-16 23:34:05 +0000 | [diff] [blame] | 1163 | #endif |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1164 | for (y=0; y < (ssize_t) image->rows; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1165 | { |
| 1166 | MagickBooleanType |
| 1167 | sync; |
| 1168 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1169 | register const Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1170 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1171 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1172 | register Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1173 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1174 | |
cristy | 2be5060 | 2011-10-09 01:28:13 +0000 | [diff] [blame] | 1175 | register ssize_t |
| 1176 | x; |
| 1177 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1178 | if (status == MagickFalse) |
| 1179 | continue; |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1180 | p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception); |
| 1181 | q=QueueCacheViewAuthenticPixels(rotate_view,0,(ssize_t) (image->rows-y- |
| 1182 | 1),image->columns,1,exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1183 | if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL)) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1184 | { |
| 1185 | status=MagickFalse; |
| 1186 | continue; |
| 1187 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1188 | q+=GetPixelChannels(rotate_image)*image->columns; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1189 | for (x=0; x < (ssize_t) image->columns; x++) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1190 | { |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1191 | register ssize_t |
| 1192 | i; |
| 1193 | |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1194 | q-=GetPixelChannels(rotate_image); |
cristy | 883fde1 | 2013-04-08 00:50:13 +0000 | [diff] [blame] | 1195 | if (GetPixelReadMask(image,p) == 0) |
cristy | 10a6c61 | 2012-01-29 21:41:05 +0000 | [diff] [blame] | 1196 | { |
| 1197 | p+=GetPixelChannels(image); |
| 1198 | continue; |
| 1199 | } |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1200 | for (i=0; i < (ssize_t) GetPixelChannels(image); i++) |
| 1201 | { |
cristy | 5a23c55 | 2013-02-13 14:34:28 +0000 | [diff] [blame] | 1202 | PixelChannel channel=GetPixelChannelChannel(image,i); |
| 1203 | PixelTrait traits=GetPixelChannelTraits(image,channel); |
| 1204 | PixelTrait rotate_traits=GetPixelChannelTraits(rotate_image, |
| 1205 | channel); |
cristy | 010d7d1 | 2011-08-31 01:02:48 +0000 | [diff] [blame] | 1206 | if ((traits == UndefinedPixelTrait) || |
| 1207 | (rotate_traits == UndefinedPixelTrait)) |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1208 | continue; |
cristy | 0beccfa | 2011-09-25 20:47:53 +0000 | [diff] [blame] | 1209 | SetPixelChannel(rotate_image,channel,p[i],q); |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1210 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1211 | p+=GetPixelChannels(image); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1212 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1213 | sync=SyncCacheViewAuthenticPixels(rotate_view,exception); |
| 1214 | if (sync == MagickFalse) |
| 1215 | status=MagickFalse; |
| 1216 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1217 | { |
| 1218 | MagickBooleanType |
| 1219 | proceed; |
| 1220 | |
cristy | 5f89061 | 2012-12-16 23:34:05 +0000 | [diff] [blame] | 1221 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
| 1222 | #pragma omp critical (MagickCore_IntegralRotateImage) |
| 1223 | #endif |
cristy | 0729beb | 2011-09-25 23:29:32 +0000 | [diff] [blame] | 1224 | proceed=SetImageProgress(image,RotateImageTag,progress++, |
cristy | 21e0341 | 2011-09-25 22:39:35 +0000 | [diff] [blame] | 1225 | image->rows); |
| 1226 | if (proceed == MagickFalse) |
| 1227 | status=MagickFalse; |
| 1228 | } |
| 1229 | } |
| 1230 | (void) SetImageProgress(image,RotateImageTag,(MagickOffsetType) |
| 1231 | image->rows-1,image->rows); |
| 1232 | Swap(page.width,page.height); |
| 1233 | Swap(page.x,page.y); |
| 1234 | if (page.width != 0) |
| 1235 | page.x=(ssize_t) (page.width-rotate_image->columns-page.x); |
| 1236 | break; |
| 1237 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1238 | case 3: |
| 1239 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1240 | size_t |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1241 | tile_height, |
| 1242 | tile_width; |
| 1243 | |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 1244 | ssize_t |
| 1245 | tile_y; |
| 1246 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1247 | /* |
| 1248 | Rotate 270 degrees. |
| 1249 | */ |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1250 | GetPixelCacheTileSize(image,&tile_width,&tile_height); |
cristy | 8b8148b | 2012-10-07 00:41:15 +0000 | [diff] [blame] | 1251 | tile_width=image->columns; |
cristy | 26b6491 | 2012-12-16 18:20:09 +0000 | [diff] [blame] | 1252 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 64c10cd | 2013-01-06 18:40:43 +0000 | [diff] [blame] | 1253 | #pragma omp parallel for schedule(static,4) shared(status) \ |
cristy | cb7dfcc | 2013-01-06 18:34:59 +0000 | [diff] [blame] | 1254 | magick_threads(image,image,1,1) |
cristy | 9a5a52f | 2012-10-09 14:40:31 +0000 | [diff] [blame] | 1255 | #endif |
cristy | ad11aac | 2011-09-25 21:29:16 +0000 | [diff] [blame] | 1256 | for (tile_y=0; tile_y < (ssize_t) image->rows; tile_y+=(ssize_t) tile_height) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1257 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1258 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1259 | tile_x; |
| 1260 | |
| 1261 | if (status == MagickFalse) |
| 1262 | continue; |
cristy | 2629532 | 2011-09-22 00:50:36 +0000 | [diff] [blame] | 1263 | tile_x=0; |
| 1264 | for ( ; tile_x < (ssize_t) image->columns; tile_x+=(ssize_t) tile_width) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1265 | { |
| 1266 | MagickBooleanType |
| 1267 | sync; |
| 1268 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1269 | register const Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1270 | *restrict p; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1271 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1272 | register Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1273 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1274 | |
cristy | 2be5060 | 2011-10-09 01:28:13 +0000 | [diff] [blame] | 1275 | register ssize_t |
| 1276 | y; |
| 1277 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1278 | size_t |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1279 | height, |
| 1280 | width; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1281 | |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1282 | width=tile_width; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1283 | if ((tile_x+(ssize_t) tile_width) > (ssize_t) image->columns) |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1284 | width=(size_t) (tile_width-(tile_x+tile_width-image->columns)); |
cristy | b32b90a | 2009-09-07 21:45:48 +0000 | [diff] [blame] | 1285 | height=tile_height; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1286 | if ((tile_y+(ssize_t) tile_height) > (ssize_t) image->rows) |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1287 | height=(size_t) (tile_height-(tile_y+tile_height-image->rows)); |
| 1288 | p=GetCacheViewVirtualPixels(image_view,tile_x,tile_y,width,height, |
| 1289 | exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1290 | if (p == (const Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1291 | { |
| 1292 | status=MagickFalse; |
| 1293 | break; |
| 1294 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1295 | for (y=0; y < (ssize_t) width; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1296 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1297 | register const Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1298 | *restrict tile_pixels; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1299 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1300 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1301 | x; |
| 1302 | |
cristy | 27709ef | 2011-09-18 02:53:53 +0000 | [diff] [blame] | 1303 | if (status == MagickFalse) |
| 1304 | continue; |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1305 | q=QueueCacheViewAuthenticPixels(rotate_view,tile_y,(ssize_t) (y+ |
| 1306 | rotate_image->rows-(tile_x+width)),height,1,exception); |
cristy | acd2ed2 | 2011-08-30 01:44:23 +0000 | [diff] [blame] | 1307 | if (q == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1308 | { |
| 1309 | status=MagickFalse; |
cristy | 27709ef | 2011-09-18 02:53:53 +0000 | [diff] [blame] | 1310 | continue; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1311 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1312 | tile_pixels=p+((width-1)-y)*GetPixelChannels(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1313 | for (x=0; x < (ssize_t) height; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1314 | { |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1315 | register ssize_t |
| 1316 | i; |
| 1317 | |
cristy | 883fde1 | 2013-04-08 00:50:13 +0000 | [diff] [blame] | 1318 | if (GetPixelReadMask(image,tile_pixels) == 0) |
cristy | 10a6c61 | 2012-01-29 21:41:05 +0000 | [diff] [blame] | 1319 | { |
| 1320 | tile_pixels+=width*GetPixelChannels(image); |
| 1321 | q+=GetPixelChannels(rotate_image); |
| 1322 | continue; |
| 1323 | } |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1324 | for (i=0; i < (ssize_t) GetPixelChannels(image); i++) |
| 1325 | { |
cristy | 5a23c55 | 2013-02-13 14:34:28 +0000 | [diff] [blame] | 1326 | PixelChannel channel=GetPixelChannelChannel(image,i); |
| 1327 | PixelTrait traits=GetPixelChannelTraits(image,channel); |
| 1328 | PixelTrait rotate_traits=GetPixelChannelTraits(rotate_image, |
| 1329 | channel); |
cristy | 010d7d1 | 2011-08-31 01:02:48 +0000 | [diff] [blame] | 1330 | if ((traits == UndefinedPixelTrait) || |
| 1331 | (rotate_traits == UndefinedPixelTrait)) |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1332 | continue; |
cristy | 0beccfa | 2011-09-25 20:47:53 +0000 | [diff] [blame] | 1333 | SetPixelChannel(rotate_image,channel,tile_pixels[i],q); |
cristy | a45d2ec | 2011-08-24 13:17:19 +0000 | [diff] [blame] | 1334 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1335 | tile_pixels+=width*GetPixelChannels(image); |
| 1336 | q+=GetPixelChannels(rotate_image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1337 | } |
cristy | 26b6491 | 2012-12-16 18:20:09 +0000 | [diff] [blame] | 1338 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 9a5a52f | 2012-10-09 14:40:31 +0000 | [diff] [blame] | 1339 | #pragma omp critical (MagickCore_IntegralRotateImage) |
| 1340 | #endif |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1341 | sync=SyncCacheViewAuthenticPixels(rotate_view,exception); |
| 1342 | if (sync == MagickFalse) |
| 1343 | status=MagickFalse; |
| 1344 | } |
| 1345 | } |
| 1346 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1347 | { |
| 1348 | MagickBooleanType |
| 1349 | proceed; |
| 1350 | |
cristy | 21e0341 | 2011-09-25 22:39:35 +0000 | [diff] [blame] | 1351 | proceed=SetImageProgress(image,RotateImageTag,progress+=tile_height, |
| 1352 | image->rows); |
| 1353 | if (proceed == MagickFalse) |
| 1354 | status=MagickFalse; |
| 1355 | } |
| 1356 | } |
| 1357 | (void) SetImageProgress(image,RotateImageTag,(MagickOffsetType) |
| 1358 | image->rows-1,image->rows); |
| 1359 | Swap(page.width,page.height); |
| 1360 | Swap(page.x,page.y); |
| 1361 | if (page.width != 0) |
| 1362 | page.x=(ssize_t) (page.width-rotate_image->columns-page.x); |
| 1363 | break; |
| 1364 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1365 | } |
| 1366 | rotate_view=DestroyCacheView(rotate_view); |
| 1367 | image_view=DestroyCacheView(image_view); |
| 1368 | rotate_image->type=image->type; |
| 1369 | rotate_image->page=page; |
| 1370 | if (status == MagickFalse) |
| 1371 | rotate_image=DestroyImage(rotate_image); |
| 1372 | return(rotate_image); |
| 1373 | } |
| 1374 | |
| 1375 | /* |
| 1376 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1377 | % % |
| 1378 | % % |
| 1379 | % % |
| 1380 | + X S h e a r I m a g e % |
| 1381 | % % |
| 1382 | % % |
| 1383 | % % |
| 1384 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1385 | % |
| 1386 | % XShearImage() shears the image in the X direction with a shear angle of |
| 1387 | % 'degrees'. Positive angles shear counter-clockwise (right-hand rule), and |
| 1388 | % negative angles shear clockwise. Angles are measured relative to a vertical |
| 1389 | % Y-axis. X shears will widen an image creating 'empty' triangles on the left |
| 1390 | % and right sides of the source image. |
| 1391 | % |
| 1392 | % The format of the XShearImage method is: |
| 1393 | % |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1394 | % MagickBooleanType XShearImage(Image *image,const double degrees, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1395 | % const size_t width,const size_t height, |
| 1396 | % const ssize_t x_offset,const ssize_t y_offset,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1397 | % |
| 1398 | % A description of each parameter follows. |
| 1399 | % |
| 1400 | % o image: the image. |
| 1401 | % |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1402 | % o degrees: A double representing the shearing angle along the X |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1403 | % axis. |
| 1404 | % |
| 1405 | % o width, height, x_offset, y_offset: Defines a region of the image |
| 1406 | % to shear. |
| 1407 | % |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 1408 | % o exception: return any errors or warnings in this structure. |
| 1409 | % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1410 | */ |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1411 | static MagickBooleanType XShearImage(Image *image,const double degrees, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1412 | const size_t width,const size_t height,const ssize_t x_offset, |
| 1413 | const ssize_t y_offset,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1414 | { |
| 1415 | #define XShearImageTag "XShear/Image" |
| 1416 | |
| 1417 | typedef enum |
| 1418 | { |
| 1419 | LEFT, |
| 1420 | RIGHT |
| 1421 | } ShearDirection; |
| 1422 | |
| 1423 | CacheView |
| 1424 | *image_view; |
| 1425 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1426 | MagickBooleanType |
| 1427 | status; |
| 1428 | |
cristy | 5f95947 | 2010-05-27 22:19:46 +0000 | [diff] [blame] | 1429 | MagickOffsetType |
| 1430 | progress; |
| 1431 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1432 | PixelInfo |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1433 | background; |
| 1434 | |
cristy | 5f95947 | 2010-05-27 22:19:46 +0000 | [diff] [blame] | 1435 | ssize_t |
| 1436 | y; |
| 1437 | |
cristy | 9d8c8ce | 2011-10-25 16:13:52 +0000 | [diff] [blame] | 1438 | /* |
| 1439 | X shear image. |
| 1440 | */ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1441 | assert(image != (Image *) NULL); |
| 1442 | assert(image->signature == MagickSignature); |
| 1443 | if (image->debug != MagickFalse) |
| 1444 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1445 | status=MagickTrue; |
cristy | 9d8c8ce | 2011-10-25 16:13:52 +0000 | [diff] [blame] | 1446 | background=image->background_color; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1447 | progress=0; |
cristy | 46ff267 | 2012-12-14 15:32:26 +0000 | [diff] [blame] | 1448 | image_view=AcquireAuthenticCacheView(image,exception); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1449 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | ac245f8 | 2012-05-05 17:13:57 +0000 | [diff] [blame] | 1450 | #pragma omp parallel for schedule(static,4) shared(progress,status) \ |
cristy | 5e6b259 | 2012-12-19 14:08:11 +0000 | [diff] [blame] | 1451 | magick_threads(image,image,height,1) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1452 | #endif |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1453 | for (y=0; y < (ssize_t) height; y++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1454 | { |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1455 | PixelInfo |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1456 | pixel, |
| 1457 | source, |
| 1458 | destination; |
| 1459 | |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1460 | double |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1461 | area, |
| 1462 | displacement; |
| 1463 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1464 | register Quantum |
cristy | c47d1f8 | 2009-11-26 01:44:43 +0000 | [diff] [blame] | 1465 | *restrict p, |
| 1466 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1467 | |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 1468 | register ssize_t |
| 1469 | i; |
| 1470 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1471 | ShearDirection |
| 1472 | direction; |
| 1473 | |
cristy | d40deb6 | 2011-03-09 00:52:27 +0000 | [diff] [blame] | 1474 | ssize_t |
| 1475 | step; |
| 1476 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1477 | if (status == MagickFalse) |
| 1478 | continue; |
| 1479 | p=GetCacheViewAuthenticPixels(image_view,0,y_offset+y,image->columns,1, |
| 1480 | exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1481 | if (p == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1482 | { |
| 1483 | status=MagickFalse; |
| 1484 | continue; |
| 1485 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1486 | p+=x_offset*GetPixelChannels(image); |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1487 | displacement=degrees*(double) (y-height/2.0); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1488 | if (displacement == 0.0) |
| 1489 | continue; |
| 1490 | if (displacement > 0.0) |
| 1491 | direction=RIGHT; |
| 1492 | else |
| 1493 | { |
| 1494 | displacement*=(-1.0); |
| 1495 | direction=LEFT; |
| 1496 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1497 | step=(ssize_t) floor((double) displacement); |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1498 | area=(double) (displacement-step); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1499 | step++; |
| 1500 | pixel=background; |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1501 | GetPixelInfo(image,&source); |
| 1502 | GetPixelInfo(image,&destination); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1503 | switch (direction) |
| 1504 | { |
| 1505 | case LEFT: |
| 1506 | { |
| 1507 | /* |
| 1508 | Transfer pixels left-to-right. |
| 1509 | */ |
| 1510 | if (step > x_offset) |
| 1511 | break; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1512 | q=p-step*GetPixelChannels(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1513 | for (i=0; i < (ssize_t) width; i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1514 | { |
| 1515 | if ((x_offset+i) < step) |
| 1516 | { |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1517 | p+=GetPixelChannels(image); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1518 | GetPixelInfoPixel(image,p,&pixel); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1519 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1520 | continue; |
| 1521 | } |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1522 | GetPixelInfoPixel(image,p,&source); |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1523 | CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha, |
| 1524 | &source,(double) GetPixelAlpha(image,p),area,&destination); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1525 | SetPixelInfoPixel(image,&destination,q); |
| 1526 | GetPixelInfoPixel(image,p,&pixel); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1527 | p+=GetPixelChannels(image); |
| 1528 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1529 | } |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1530 | CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha, |
| 1531 | &background,(double) background.alpha,area,&destination); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1532 | SetPixelInfoPixel(image,&destination,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1533 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1534 | for (i=0; i < (step-1); i++) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1535 | { |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1536 | SetPixelInfoPixel(image,&background,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1537 | q+=GetPixelChannels(image); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1538 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1539 | break; |
| 1540 | } |
| 1541 | case RIGHT: |
| 1542 | { |
| 1543 | /* |
| 1544 | Transfer pixels right-to-left. |
| 1545 | */ |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1546 | p+=width*GetPixelChannels(image); |
| 1547 | q=p+step*GetPixelChannels(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1548 | for (i=0; i < (ssize_t) width; i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1549 | { |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1550 | p-=GetPixelChannels(image); |
| 1551 | q-=GetPixelChannels(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1552 | if ((size_t) (x_offset+width+step-i) >= image->columns) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1553 | continue; |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1554 | GetPixelInfoPixel(image,p,&source); |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1555 | CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha, |
| 1556 | &source,(double) GetPixelAlpha(image,p),area,&destination); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1557 | SetPixelInfoPixel(image,&destination,q); |
| 1558 | GetPixelInfoPixel(image,p,&pixel); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1559 | } |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1560 | CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha, |
| 1561 | &background,(double) background.alpha,area,&destination); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1562 | q-=GetPixelChannels(image); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1563 | SetPixelInfoPixel(image,&destination,q); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1564 | for (i=0; i < (step-1); i++) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1565 | { |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1566 | q-=GetPixelChannels(image); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1567 | SetPixelInfoPixel(image,&background,q); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1568 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1569 | break; |
| 1570 | } |
| 1571 | } |
| 1572 | if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
| 1573 | status=MagickFalse; |
| 1574 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1575 | { |
| 1576 | MagickBooleanType |
| 1577 | proceed; |
| 1578 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1579 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 7b650b5 | 2011-10-09 01:13:39 +0000 | [diff] [blame] | 1580 | #pragma omp critical (MagickCore_XShearImage) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1581 | #endif |
| 1582 | proceed=SetImageProgress(image,XShearImageTag,progress++,height); |
| 1583 | if (proceed == MagickFalse) |
| 1584 | status=MagickFalse; |
| 1585 | } |
| 1586 | } |
| 1587 | image_view=DestroyCacheView(image_view); |
| 1588 | return(status); |
| 1589 | } |
| 1590 | |
| 1591 | /* |
| 1592 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1593 | % % |
| 1594 | % % |
| 1595 | % % |
| 1596 | + Y S h e a r I m a g e % |
| 1597 | % % |
| 1598 | % % |
| 1599 | % % |
| 1600 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1601 | % |
| 1602 | % YShearImage shears the image in the Y direction with a shear angle of |
| 1603 | % 'degrees'. Positive angles shear counter-clockwise (right-hand rule), and |
| 1604 | % negative angles shear clockwise. Angles are measured relative to a |
| 1605 | % horizontal X-axis. Y shears will increase the height of an image creating |
| 1606 | % 'empty' triangles on the top and bottom of the source image. |
| 1607 | % |
| 1608 | % The format of the YShearImage method is: |
| 1609 | % |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1610 | % MagickBooleanType YShearImage(Image *image,const double degrees, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1611 | % const size_t width,const size_t height, |
| 1612 | % const ssize_t x_offset,const ssize_t y_offset,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1613 | % |
| 1614 | % A description of each parameter follows. |
| 1615 | % |
| 1616 | % o image: the image. |
| 1617 | % |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1618 | % o degrees: A double representing the shearing angle along the Y |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1619 | % axis. |
| 1620 | % |
| 1621 | % o width, height, x_offset, y_offset: Defines a region of the image |
| 1622 | % to shear. |
| 1623 | % |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 1624 | % o exception: return any errors or warnings in this structure. |
| 1625 | % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1626 | */ |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1627 | static MagickBooleanType YShearImage(Image *image,const double degrees, |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1628 | const size_t width,const size_t height,const ssize_t x_offset, |
| 1629 | const ssize_t y_offset,ExceptionInfo *exception) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1630 | { |
| 1631 | #define YShearImageTag "YShear/Image" |
| 1632 | |
| 1633 | typedef enum |
| 1634 | { |
| 1635 | UP, |
| 1636 | DOWN |
| 1637 | } ShearDirection; |
| 1638 | |
| 1639 | CacheView |
| 1640 | *image_view; |
| 1641 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1642 | MagickBooleanType |
| 1643 | status; |
| 1644 | |
cristy | 5f95947 | 2010-05-27 22:19:46 +0000 | [diff] [blame] | 1645 | MagickOffsetType |
| 1646 | progress; |
| 1647 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1648 | PixelInfo |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1649 | background; |
| 1650 | |
cristy | 5f95947 | 2010-05-27 22:19:46 +0000 | [diff] [blame] | 1651 | ssize_t |
| 1652 | x; |
| 1653 | |
cristy | 9d8c8ce | 2011-10-25 16:13:52 +0000 | [diff] [blame] | 1654 | /* |
| 1655 | Y Shear image. |
| 1656 | */ |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1657 | assert(image != (Image *) NULL); |
| 1658 | assert(image->signature == MagickSignature); |
| 1659 | if (image->debug != MagickFalse) |
| 1660 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1661 | status=MagickTrue; |
| 1662 | progress=0; |
cristy | 9d8c8ce | 2011-10-25 16:13:52 +0000 | [diff] [blame] | 1663 | background=image->background_color; |
cristy | 46ff267 | 2012-12-14 15:32:26 +0000 | [diff] [blame] | 1664 | image_view=AcquireAuthenticCacheView(image,exception); |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1665 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | ac245f8 | 2012-05-05 17:13:57 +0000 | [diff] [blame] | 1666 | #pragma omp parallel for schedule(static,4) shared(progress,status) \ |
cristy | 5e6b259 | 2012-12-19 14:08:11 +0000 | [diff] [blame] | 1667 | magick_threads(image,image,width,1) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1668 | #endif |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1669 | for (x=0; x < (ssize_t) width; x++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1670 | { |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1671 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1672 | step; |
| 1673 | |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1674 | double |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1675 | area, |
| 1676 | displacement; |
| 1677 | |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1678 | PixelInfo |
| 1679 | pixel, |
| 1680 | source, |
| 1681 | destination; |
| 1682 | |
| 1683 | register Quantum |
| 1684 | *restrict p, |
| 1685 | *restrict q; |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1686 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1687 | register ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1688 | i; |
| 1689 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1690 | ShearDirection |
| 1691 | direction; |
| 1692 | |
| 1693 | if (status == MagickFalse) |
| 1694 | continue; |
| 1695 | p=GetCacheViewAuthenticPixels(image_view,x_offset+x,0,1,image->rows, |
| 1696 | exception); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1697 | if (p == (Quantum *) NULL) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1698 | { |
| 1699 | status=MagickFalse; |
| 1700 | continue; |
| 1701 | } |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1702 | p+=y_offset*GetPixelChannels(image); |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1703 | displacement=degrees*(double) (x-width/2.0); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1704 | if (displacement == 0.0) |
| 1705 | continue; |
| 1706 | if (displacement > 0.0) |
| 1707 | direction=DOWN; |
| 1708 | else |
| 1709 | { |
| 1710 | displacement*=(-1.0); |
| 1711 | direction=UP; |
| 1712 | } |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1713 | step=(ssize_t) floor((double) displacement); |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1714 | area=(double) (displacement-step); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1715 | step++; |
| 1716 | pixel=background; |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1717 | GetPixelInfo(image,&source); |
| 1718 | GetPixelInfo(image,&destination); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1719 | switch (direction) |
| 1720 | { |
| 1721 | case UP: |
| 1722 | { |
| 1723 | /* |
| 1724 | Transfer pixels top-to-bottom. |
| 1725 | */ |
| 1726 | if (step > y_offset) |
| 1727 | break; |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1728 | q=p-step*GetPixelChannels(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1729 | for (i=0; i < (ssize_t) height; i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1730 | { |
| 1731 | if ((y_offset+i) < step) |
| 1732 | { |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1733 | p+=GetPixelChannels(image); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1734 | GetPixelInfoPixel(image,p,&pixel); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1735 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1736 | continue; |
| 1737 | } |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1738 | GetPixelInfoPixel(image,p,&source); |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1739 | CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha, |
| 1740 | &source,(double) GetPixelAlpha(image,p),area, |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1741 | &destination); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1742 | SetPixelInfoPixel(image,&destination,q); |
| 1743 | GetPixelInfoPixel(image,p,&pixel); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1744 | p+=GetPixelChannels(image); |
| 1745 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1746 | } |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1747 | CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha, |
| 1748 | &background,(double) background.alpha,area,&destination); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1749 | SetPixelInfoPixel(image,&destination,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1750 | q+=GetPixelChannels(image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1751 | for (i=0; i < (step-1); i++) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1752 | { |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1753 | SetPixelInfoPixel(image,&background,q); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1754 | q+=GetPixelChannels(image); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1755 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1756 | break; |
| 1757 | } |
| 1758 | case DOWN: |
| 1759 | { |
| 1760 | /* |
| 1761 | Transfer pixels bottom-to-top. |
| 1762 | */ |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1763 | p+=height*GetPixelChannels(image); |
| 1764 | q=p+step*GetPixelChannels(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1765 | for (i=0; i < (ssize_t) height; i++) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1766 | { |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1767 | p-=GetPixelChannels(image); |
| 1768 | q-=GetPixelChannels(image); |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1769 | if ((size_t) (y_offset+height+step-i) >= image->rows) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1770 | continue; |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1771 | GetPixelInfoPixel(image,p,&source); |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1772 | CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha, |
| 1773 | &source,(double) GetPixelAlpha(image,p),area, |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1774 | &destination); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1775 | SetPixelInfoPixel(image,&destination,q); |
| 1776 | GetPixelInfoPixel(image,p,&pixel); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1777 | } |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1778 | CompositePixelInfoAreaBlend(&pixel,(double) pixel.alpha, |
| 1779 | &background,(double) background.alpha,area,&destination); |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1780 | q-=GetPixelChannels(image); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1781 | SetPixelInfoPixel(image,&destination,q); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1782 | for (i=0; i < (step-1); i++) |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1783 | { |
cristy | ed23157 | 2011-07-14 02:18:59 +0000 | [diff] [blame] | 1784 | q-=GetPixelChannels(image); |
cristy | 803640d | 2011-11-17 02:11:32 +0000 | [diff] [blame] | 1785 | SetPixelInfoPixel(image,&background,q); |
cristy | 4c08aed | 2011-07-01 19:47:50 +0000 | [diff] [blame] | 1786 | } |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1787 | break; |
| 1788 | } |
| 1789 | } |
| 1790 | if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse) |
| 1791 | status=MagickFalse; |
| 1792 | if (image->progress_monitor != (MagickProgressMonitor) NULL) |
| 1793 | { |
| 1794 | MagickBooleanType |
| 1795 | proceed; |
| 1796 | |
cristy | b5d5f72 | 2009-11-04 03:03:49 +0000 | [diff] [blame] | 1797 | #if defined(MAGICKCORE_OPENMP_SUPPORT) |
cristy | 7b650b5 | 2011-10-09 01:13:39 +0000 | [diff] [blame] | 1798 | #pragma omp critical (MagickCore_YShearImage) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1799 | #endif |
| 1800 | proceed=SetImageProgress(image,YShearImageTag,progress++,image->rows); |
| 1801 | if (proceed == MagickFalse) |
| 1802 | status=MagickFalse; |
| 1803 | } |
| 1804 | } |
| 1805 | image_view=DestroyCacheView(image_view); |
| 1806 | return(status); |
| 1807 | } |
| 1808 | |
| 1809 | /* |
| 1810 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1811 | % % |
| 1812 | % % |
| 1813 | % % |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1814 | % S h e a r I m a g e % |
| 1815 | % % |
| 1816 | % % |
| 1817 | % % |
| 1818 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1819 | % |
| 1820 | % ShearImage() creates a new image that is a shear_image copy of an existing |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1821 | % one. Shearing slides one edge of an image along the X or Y axis, creating |
| 1822 | % a parallelogram. An X direction shear slides an edge along the X axis, |
| 1823 | % while a Y direction shear slides an edge along the Y axis. The amount of |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1824 | % the shear is controlled by a shear angle. For X direction shears, x_shear |
| 1825 | % is measured relative to the Y axis, and similarly, for Y direction shears |
| 1826 | % y_shear is measured relative to the X axis. Empty triangles left over from |
| 1827 | % shearing the image are filled with the background color defined by member |
| 1828 | % 'background_color' of the image.. ShearImage() allocates the memory |
| 1829 | % necessary for the new Image structure and returns a pointer to the new image. |
| 1830 | % |
| 1831 | % ShearImage() is based on the paper "A Fast Algorithm for General Raster |
| 1832 | % Rotatation" by Alan W. Paeth. |
| 1833 | % |
| 1834 | % The format of the ShearImage method is: |
| 1835 | % |
| 1836 | % Image *ShearImage(const Image *image,const double x_shear, |
| 1837 | % const double y_shear,ExceptionInfo *exception) |
| 1838 | % |
| 1839 | % A description of each parameter follows. |
| 1840 | % |
| 1841 | % o image: the image. |
| 1842 | % |
| 1843 | % o x_shear, y_shear: Specifies the number of degrees to shear the image. |
| 1844 | % |
| 1845 | % o exception: return any errors or warnings in this structure. |
| 1846 | % |
| 1847 | */ |
| 1848 | MagickExport Image *ShearImage(const Image *image,const double x_shear, |
| 1849 | const double y_shear,ExceptionInfo *exception) |
| 1850 | { |
| 1851 | Image |
| 1852 | *integral_image, |
| 1853 | *shear_image; |
| 1854 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1855 | ssize_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1856 | x_offset, |
| 1857 | y_offset; |
| 1858 | |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 1859 | MagickBooleanType |
| 1860 | status; |
| 1861 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1862 | PointInfo |
| 1863 | shear; |
| 1864 | |
| 1865 | RectangleInfo |
| 1866 | border_info; |
| 1867 | |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1868 | size_t |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1869 | y_width; |
| 1870 | |
| 1871 | assert(image != (Image *) NULL); |
| 1872 | assert(image->signature == MagickSignature); |
| 1873 | if (image->debug != MagickFalse) |
| 1874 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 1875 | assert(exception != (ExceptionInfo *) NULL); |
| 1876 | assert(exception->signature == MagickSignature); |
| 1877 | if ((x_shear != 0.0) && (fmod(x_shear,90.0) == 0.0)) |
| 1878 | ThrowImageException(ImageError,"AngleIsDiscontinuous"); |
| 1879 | if ((y_shear != 0.0) && (fmod(y_shear,90.0) == 0.0)) |
| 1880 | ThrowImageException(ImageError,"AngleIsDiscontinuous"); |
| 1881 | /* |
| 1882 | Initialize shear angle. |
| 1883 | */ |
| 1884 | integral_image=CloneImage(image,0,0,MagickTrue,exception); |
| 1885 | if (integral_image == (Image *) NULL) |
| 1886 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 1887 | shear.x=(-tan(DegreesToRadians(fmod(x_shear,360.0)))); |
| 1888 | shear.y=tan(DegreesToRadians(fmod(y_shear,360.0))); |
| 1889 | if ((shear.x == 0.0) && (shear.y == 0.0)) |
| 1890 | return(integral_image); |
cristy | 574cc26 | 2011-08-05 01:23:58 +0000 | [diff] [blame] | 1891 | if (SetImageStorageClass(integral_image,DirectClass,exception) == MagickFalse) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1892 | { |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1893 | integral_image=DestroyImage(integral_image); |
| 1894 | return(integral_image); |
| 1895 | } |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1896 | if (integral_image->alpha_trait != BlendPixelTrait) |
cristy | 6324088 | 2011-08-05 19:05:27 +0000 | [diff] [blame] | 1897 | (void) SetImageAlphaChannel(integral_image,OpaqueAlphaChannel,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1898 | /* |
| 1899 | Compute image size. |
| 1900 | */ |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1901 | y_width=image->columns+(ssize_t) floor(fabs(shear.x)*image->rows+0.5); |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1902 | x_offset=(ssize_t) ceil((double) image->columns+((fabs(shear.x)*image->rows)- |
cristy | 06609ee | 2010-03-17 20:21:27 +0000 | [diff] [blame] | 1903 | image->columns)/2.0-0.5); |
cristy | cee9711 | 2010-05-28 00:44:52 +0000 | [diff] [blame] | 1904 | y_offset=(ssize_t) ceil((double) image->rows+((fabs(shear.y)*y_width)- |
| 1905 | image->rows)/2.0-0.5); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1906 | /* |
| 1907 | Surround image with border. |
| 1908 | */ |
| 1909 | integral_image->border_color=integral_image->background_color; |
| 1910 | integral_image->compose=CopyCompositeOp; |
cristy | bb50337 | 2010-05-27 20:51:26 +0000 | [diff] [blame] | 1911 | border_info.width=(size_t) x_offset; |
| 1912 | border_info.height=(size_t) y_offset; |
cristy | 633f0c6 | 2011-09-15 13:27:36 +0000 | [diff] [blame] | 1913 | shear_image=BorderImage(integral_image,&border_info,image->compose,exception); |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 1914 | integral_image=DestroyImage(integral_image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1915 | if (shear_image == (Image *) NULL) |
| 1916 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1917 | /* |
| 1918 | Shear the image. |
| 1919 | */ |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 1920 | if (shear_image->alpha_trait != BlendPixelTrait) |
cristy | 6324088 | 2011-08-05 19:05:27 +0000 | [diff] [blame] | 1921 | (void) SetImageAlphaChannel(shear_image,OpaqueAlphaChannel,exception); |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 1922 | status=XShearImage(shear_image,shear.x,image->columns,image->rows,x_offset, |
cristy | eaedf06 | 2010-05-29 22:36:02 +0000 | [diff] [blame] | 1923 | (ssize_t) (shear_image->rows-image->rows)/2,exception); |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 1924 | if (status == MagickFalse) |
| 1925 | { |
| 1926 | shear_image=DestroyImage(shear_image); |
| 1927 | return((Image *) NULL); |
| 1928 | } |
cristy | eaedf06 | 2010-05-29 22:36:02 +0000 | [diff] [blame] | 1929 | status=YShearImage(shear_image,shear.y,y_width,image->rows,(ssize_t) |
| 1930 | (shear_image->columns-y_width)/2,y_offset,exception); |
cristy | ecc2c14 | 2010-01-17 22:25:46 +0000 | [diff] [blame] | 1931 | if (status == MagickFalse) |
| 1932 | { |
| 1933 | shear_image=DestroyImage(shear_image); |
| 1934 | return((Image *) NULL); |
| 1935 | } |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1936 | status=CropToFitImage(&shear_image,shear.x,shear.y,(double) |
| 1937 | image->columns,(double) image->rows,MagickFalse,exception); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1938 | shear_image->compose=image->compose; |
| 1939 | shear_image->page.width=0; |
| 1940 | shear_image->page.height=0; |
cristy | 1c2f48d | 2012-12-14 01:20:55 +0000 | [diff] [blame] | 1941 | if (status == MagickFalse) |
| 1942 | shear_image=DestroyImage(shear_image); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1943 | return(shear_image); |
| 1944 | } |
cristy | c7c8114 | 2011-11-07 12:14:23 +0000 | [diff] [blame] | 1945 | |
| 1946 | /* |
| 1947 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1948 | % % |
| 1949 | % % |
| 1950 | % % |
| 1951 | % S h e a r R o t a t e I m a g e % |
| 1952 | % % |
| 1953 | % % |
| 1954 | % % |
| 1955 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 1956 | % |
| 1957 | % ShearRotateImage() creates a new image that is a rotated copy of an existing |
| 1958 | % one. Positive angles rotate counter-clockwise (right-hand rule), while |
| 1959 | % negative angles rotate clockwise. Rotated images are usually larger than |
| 1960 | % the originals and have 'empty' triangular corners. X axis. Empty |
| 1961 | % triangles left over from shearing the image are filled with the background |
| 1962 | % color defined by member 'background_color' of the image. ShearRotateImage |
| 1963 | % allocates the memory necessary for the new Image structure and returns a |
| 1964 | % pointer to the new image. |
| 1965 | % |
| 1966 | % ShearRotateImage() is based on the paper "A Fast Algorithm for General |
| 1967 | % Raster Rotatation" by Alan W. Paeth. ShearRotateImage is adapted from a |
| 1968 | % similar method based on the Paeth paper written by Michael Halle of the |
| 1969 | % Spatial Imaging Group, MIT Media Lab. |
| 1970 | % |
| 1971 | % The format of the ShearRotateImage method is: |
| 1972 | % |
| 1973 | % Image *ShearRotateImage(const Image *image,const double degrees, |
| 1974 | % ExceptionInfo *exception) |
| 1975 | % |
| 1976 | % A description of each parameter follows. |
| 1977 | % |
| 1978 | % o image: the image. |
| 1979 | % |
| 1980 | % o degrees: Specifies the number of degrees to rotate the image. |
| 1981 | % |
| 1982 | % o exception: return any errors or warnings in this structure. |
| 1983 | % |
| 1984 | */ |
| 1985 | MagickExport Image *ShearRotateImage(const Image *image,const double degrees, |
| 1986 | ExceptionInfo *exception) |
| 1987 | { |
| 1988 | Image |
| 1989 | *integral_image, |
| 1990 | *rotate_image; |
| 1991 | |
| 1992 | MagickBooleanType |
| 1993 | status; |
| 1994 | |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 1995 | double |
cristy | c7c8114 | 2011-11-07 12:14:23 +0000 | [diff] [blame] | 1996 | angle; |
| 1997 | |
| 1998 | PointInfo |
| 1999 | shear; |
| 2000 | |
| 2001 | RectangleInfo |
| 2002 | border_info; |
| 2003 | |
| 2004 | size_t |
| 2005 | height, |
| 2006 | rotations, |
| 2007 | width, |
| 2008 | y_width; |
| 2009 | |
| 2010 | ssize_t |
| 2011 | x_offset, |
| 2012 | y_offset; |
| 2013 | |
| 2014 | /* |
| 2015 | Adjust rotation angle. |
| 2016 | */ |
| 2017 | assert(image != (Image *) NULL); |
| 2018 | assert(image->signature == MagickSignature); |
| 2019 | if (image->debug != MagickFalse) |
| 2020 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename); |
| 2021 | assert(exception != (ExceptionInfo *) NULL); |
| 2022 | assert(exception->signature == MagickSignature); |
| 2023 | angle=degrees; |
| 2024 | while (angle < -45.0) |
| 2025 | angle+=360.0; |
| 2026 | for (rotations=0; angle > 45.0; rotations++) |
| 2027 | angle-=90.0; |
| 2028 | rotations%=4; |
| 2029 | /* |
| 2030 | Calculate shear equations. |
| 2031 | */ |
| 2032 | integral_image=IntegralRotateImage(image,rotations,exception); |
| 2033 | if (integral_image == (Image *) NULL) |
| 2034 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 2035 | shear.x=(-tan((double) DegreesToRadians(angle)/2.0)); |
| 2036 | shear.y=sin((double) DegreesToRadians(angle)); |
| 2037 | if ((shear.x == 0.0) && (shear.y == 0.0)) |
| 2038 | return(integral_image); |
| 2039 | if (SetImageStorageClass(integral_image,DirectClass,exception) == MagickFalse) |
| 2040 | { |
| 2041 | integral_image=DestroyImage(integral_image); |
| 2042 | return(integral_image); |
| 2043 | } |
cristy | 8a46d82 | 2012-08-28 23:32:39 +0000 | [diff] [blame] | 2044 | if (integral_image->alpha_trait != BlendPixelTrait) |
cristy | c7c8114 | 2011-11-07 12:14:23 +0000 | [diff] [blame] | 2045 | (void) SetImageAlphaChannel(integral_image,OpaqueAlphaChannel,exception); |
| 2046 | /* |
| 2047 | Compute image size. |
| 2048 | */ |
| 2049 | width=image->columns; |
| 2050 | height=image->rows; |
| 2051 | if ((rotations == 1) || (rotations == 3)) |
| 2052 | { |
| 2053 | width=image->rows; |
| 2054 | height=image->columns; |
| 2055 | } |
| 2056 | y_width=width+(ssize_t) floor(fabs(shear.x)*height+0.5); |
| 2057 | x_offset=(ssize_t) ceil((double) width+((fabs(shear.y)*height)-width)/2.0- |
| 2058 | 0.5); |
| 2059 | y_offset=(ssize_t) ceil((double) height+((fabs(shear.y)*y_width)-height)/2.0- |
| 2060 | 0.5); |
| 2061 | /* |
| 2062 | Surround image with a border. |
| 2063 | */ |
| 2064 | integral_image->border_color=integral_image->background_color; |
| 2065 | integral_image->compose=CopyCompositeOp; |
| 2066 | border_info.width=(size_t) x_offset; |
| 2067 | border_info.height=(size_t) y_offset; |
| 2068 | rotate_image=BorderImage(integral_image,&border_info,image->compose, |
| 2069 | exception); |
| 2070 | integral_image=DestroyImage(integral_image); |
| 2071 | if (rotate_image == (Image *) NULL) |
| 2072 | ThrowImageException(ResourceLimitError,"MemoryAllocationFailed"); |
| 2073 | /* |
| 2074 | Rotate the image. |
| 2075 | */ |
| 2076 | status=XShearImage(rotate_image,shear.x,width,height,x_offset,(ssize_t) |
| 2077 | (rotate_image->rows-height)/2,exception); |
| 2078 | if (status == MagickFalse) |
| 2079 | { |
| 2080 | rotate_image=DestroyImage(rotate_image); |
| 2081 | return((Image *) NULL); |
| 2082 | } |
| 2083 | status=YShearImage(rotate_image,shear.y,y_width,height,(ssize_t) |
| 2084 | (rotate_image->columns-y_width)/2,y_offset,exception); |
| 2085 | if (status == MagickFalse) |
| 2086 | { |
| 2087 | rotate_image=DestroyImage(rotate_image); |
| 2088 | return((Image *) NULL); |
| 2089 | } |
| 2090 | status=XShearImage(rotate_image,shear.x,y_width,rotate_image->rows,(ssize_t) |
| 2091 | (rotate_image->columns-y_width)/2,0,exception); |
| 2092 | if (status == MagickFalse) |
| 2093 | { |
| 2094 | rotate_image=DestroyImage(rotate_image); |
| 2095 | return((Image *) NULL); |
| 2096 | } |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 2097 | status=CropToFitImage(&rotate_image,shear.x,shear.y,(double) width, |
| 2098 | (double) height,MagickTrue,exception); |
cristy | c7c8114 | 2011-11-07 12:14:23 +0000 | [diff] [blame] | 2099 | rotate_image->compose=image->compose; |
| 2100 | rotate_image->page.width=0; |
| 2101 | rotate_image->page.height=0; |
cristy | 1c2f48d | 2012-12-14 01:20:55 +0000 | [diff] [blame] | 2102 | if (status == MagickFalse) |
| 2103 | rotate_image=DestroyImage(rotate_image); |
cristy | c7c8114 | 2011-11-07 12:14:23 +0000 | [diff] [blame] | 2104 | return(rotate_image); |
| 2105 | } |