1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
|
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% PPPP L AAA SSSSS M M AAA %
% P P L A A SS MM MM A A %
% PPPP L AAAAA SSS M M M AAAAA %
% P L A A SS M M A A %
% P LLLLL A A SSSSS M M A A %
% %
% %
% Read a Plasma Image. %
% %
% Software Design %
% Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% https://imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/channel.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/constitute.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/module.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/random_.h"
#include "MagickCore/random-private.h"
#include "MagickCore/signature-private.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/visual-effects.h"
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d P L A S M A I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadPlasmaImage creates a plasma fractal image. The image is
% initialized to the X server color as specified by the filename.
%
% The format of the ReadPlasmaImage method is:
%
% Image *ReadPlasmaImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static inline MagickBooleanType PlasmaPixel(Image *image,
RandomInfo *magick_restrict random_info,const double x,const double y,
ExceptionInfo *exception)
{
Quantum
*q;
q=GetAuthenticPixels(image,(ssize_t) (x+0.5),(ssize_t) (y+0.5),1,1,
exception);
if (q == (Quantum *) NULL)
return(MagickFalse);
SetPixelRed(image,(Quantum) (QuantumRange*
GetPseudoRandomValue(random_info)+0.5),q);
SetPixelGreen(image,(Quantum) (QuantumRange*
GetPseudoRandomValue(random_info)+0.5),q);
SetPixelBlue(image,(Quantum) (QuantumRange*
GetPseudoRandomValue(random_info)+0.5),q);
return(SyncAuthenticPixels(image,exception));
}
static Image *ReadPlasmaImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
Image
*image;
ImageInfo
*read_info;
MagickStatusType
status;
ssize_t
x;
Quantum
*q;
size_t
i;
SegmentInfo
segment_info;
size_t
depth,
max_depth;
ssize_t
y;
/*
Recursively apply plasma to the image.
*/
read_info=CloneImageInfo(image_info);
SetImageInfoBlob(read_info,(void *) NULL,0);
(void) FormatLocaleString(read_info->filename,MagickPathExtent,
"gradient:%s",image_info->filename);
image=ReadImage(read_info,exception);
read_info=DestroyImageInfo(read_info);
if (image == (Image *) NULL)
return((Image *) NULL);
(void) SetImageStorageClass(image,DirectClass,exception);
if (IsGrayColorspace(image->colorspace) != MagickFalse)
(void) SetImageColorspace(image,sRGBColorspace,exception);
for (y=0; y < (ssize_t) image->rows; y++)
{
q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (Quantum *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelAlpha(image,QuantumRange/2,q);
q+=GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
segment_info.x1=0;
segment_info.y1=0;
segment_info.x2=(double) image->columns-1;
segment_info.y2=(double) image->rows-1;
if (LocaleCompare(image_info->filename,"fractal") == 0)
{
RandomInfo
*random_info;
/*
Seed pixels before recursion.
*/
(void) SetImageColorspace(image,sRGBColorspace,exception);
random_info=AcquireRandomInfo();
status=PlasmaPixel(image,random_info,segment_info.x1,segment_info.y1,
exception);
status&=PlasmaPixel(image,random_info,segment_info.x1,(segment_info.y1+
segment_info.y2)/2,exception);
status&=PlasmaPixel(image,random_info,segment_info.x1,segment_info.y2,
exception);
status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
segment_info.y1,exception);
status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
(segment_info.y1+segment_info.y2)/2,exception);
status&=PlasmaPixel(image,random_info,(segment_info.x1+segment_info.x2)/2,
segment_info.y2,exception);
status&=PlasmaPixel(image,random_info,segment_info.x2,segment_info.y1,
exception);
status&=PlasmaPixel(image,random_info,segment_info.x2,(segment_info.y1+
segment_info.y2)/2,exception);
status&=PlasmaPixel(image,random_info,segment_info.x2,segment_info.y2,
exception);
random_info=DestroyRandomInfo(random_info);
if (status == MagickFalse)
return(image);
}
i=(size_t) MagickMax(image->columns,image->rows)/2;
for (max_depth=0; i != 0; max_depth++)
i>>=1;
for (depth=1; ; depth++)
{
if (PlasmaImage(image,&segment_info,0,depth,exception) != MagickFalse)
break;
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) depth,
max_depth);
if (status == MagickFalse)
break;
}
return(GetFirstImageInList(image));
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r P L A S M A I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterPLASMAImage() adds attributes for the Plasma image format to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterPLASMAImage method is:
%
% size_t RegisterPLASMAImage(void)
%
*/
ModuleExport size_t RegisterPLASMAImage(void)
{
MagickInfo
*entry;
entry=AcquireMagickInfo("PLASMA","PLASMA","Plasma fractal image");
entry->decoder=(DecodeImageHandler *) ReadPlasmaImage;
entry->flags^=CoderAdjoinFlag;
entry->format_type=ImplicitFormatType;
(void) RegisterMagickInfo(entry);
entry=AcquireMagickInfo("PLASMA","FRACTAL","Plasma fractal image");
entry->decoder=(DecodeImageHandler *) ReadPlasmaImage;
entry->flags^=CoderAdjoinFlag;
entry->format_type=ImplicitFormatType;
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r P L A S M A I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterPLASMAImage() removes format registrations made by the
% PLASMA module from the list of supported formats.
%
% The format of the UnregisterPLASMAImage method is:
%
% UnregisterPLASMAImage(void)
%
*/
ModuleExport void UnregisterPLASMAImage(void)
{
(void) UnregisterMagickInfo("FRACTAL");
(void) UnregisterMagickInfo("PLASMA");
}
|
