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#include <fcntl.h> |
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#endif |
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#include "color.h" |
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#include "random.h" |
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|
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#define HMARGIN (.5*72) /* horizontal margin */ |
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#define VMARGIN (.5*72) /* vertical margin */ |
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#define PWIDTH (8.5*72-2*HMARGIN) /* width of device */ |
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#define PHEIGHT (11*72-2*VMARGIN) /* height of device */ |
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|
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#define RUNCHR '*' /* character to start rle */ |
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#define MINRUN 4 /* minimum run-length */ |
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#define RSTRT '!' /* character for MINRUN */ |
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#define MAXRUN (MINRUN+'~'-RSTRT) /* maximum run-length */ |
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|
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char code[] = /* 6-bit code lookup table */ |
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"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@+"; |
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|
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exit(1); |
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} |
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if (i == argc-2 && freopen(argv[i+1], "w", stdout) == NULL) { |
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fprintf(stderr, "can't open output \"%s\"\n", |
89 |
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fprintf(stderr, "%s: can't open output \"%s\"\n", |
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progname, argv[i+1]); |
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exit(1); |
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} |
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int landscape = 0; |
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double pwidth, pheight; |
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double iwidth, iheight; |
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|
131 |
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printf("%%!\n"); |
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/* EPS comments */ |
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puts("%%!PS-Adobe-2.0 EPSF-2.0"); |
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printf("%%%%Title: %s\n", name); |
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printf("%%%%Creator: %s\n", progname); |
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printf("%%%%Creator: %s = %s\n", progname, SCCSid); |
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printf("%%%%Pages: %d\n", ncopies); |
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if (landscape = xmax > pixaspect*ymax) |
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printf("%%%%Landscape\n"); |
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puts("%%Orientation: Landscape"); |
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else |
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printf("%%%%Portrait\n"); |
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printf("%%%%EndComments\n"); |
136 |
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printf("64 dict begin\n"); |
137 |
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/* define image reader */ |
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PSprocdef("read6bit"); |
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/* set up transformation matrix */ |
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printf("%f %f translate\n", HMARGIN, VMARGIN); |
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puts("%%Orientation: Portrait"); |
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if (PWIDTH > PHEIGHT ^ landscape) { |
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printf("0 %f translate\n", PHEIGHT); |
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printf("-90 rotate\n"); |
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pwidth = PHEIGHT; |
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pheight = PWIDTH; |
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} else { |
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iheight = pheight; |
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iwidth = pheight*xmax/(pixaspect*ymax); |
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} |
153 |
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if (pwidth == PHEIGHT) |
154 |
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printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
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HMARGIN+(pheight-iheight)*.5, |
156 |
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VMARGIN+(pwidth-iwidth)*.5, |
157 |
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HMARGIN+(pheight-iheight)*.5+iheight, |
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VMARGIN+(pwidth-iwidth)*.5+iwidth); |
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else |
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printf("%%%%BoundingBox: %.0f %.0f %.0f %.0f\n", |
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HMARGIN+(pwidth-iwidth)*.5, |
162 |
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VMARGIN+(pheight-iheight)*.5, |
163 |
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HMARGIN+(pwidth-iwidth)*.5+iwidth, |
164 |
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VMARGIN+(pheight-iheight)*.5+iheight); |
165 |
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puts("%%EndComments"); |
166 |
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puts("save"); |
167 |
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puts("64 dict begin"); |
168 |
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/* define image reader */ |
169 |
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PSprocdef("read6bitRLE"); |
170 |
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/* set up transformation matrix */ |
171 |
+ |
printf("%f %f translate\n", HMARGIN, VMARGIN); |
172 |
+ |
if (pwidth == PHEIGHT) { |
173 |
+ |
printf("0 %f translate\n", PHEIGHT); |
174 |
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puts("-90 rotate"); |
175 |
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} |
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printf("%f %f translate\n", (pwidth-iwidth)*.5, (pheight-iheight)*.5); |
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printf("%f %f scale\n", iwidth, iheight); |
178 |
< |
printf("%%%%EndProlog\n"); |
178 |
> |
puts("%%%%EndProlog"); |
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/* start image procedure */ |
180 |
< |
printf("%d %d 8 [%d 0 0 %d 0 %d] {read6bit} image", xmax, ymax, |
180 |
> |
printf("%d %d 8 [%d 0 0 %d 0 %d] {read6bitRLE} image\n", xmax, ymax, |
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xmax, -ymax, ymax); |
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} |
183 |
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|
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printf("/#copies %d def\n", ncopies); |
190 |
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puts("showpage"); |
191 |
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puts("end"); |
192 |
+ |
puts("restore"); |
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puts("%%EOF"); |
194 |
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} |
195 |
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|
206 |
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itab[code[i]] = i<<2 | 2; |
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itab[code[0]] = 0; /* black is black */ |
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itab[code[63]] = 255; /* and white is white */ |
209 |
< |
printf("/decode ["); |
209 |
> |
printf("/codetab ["); |
210 |
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for (i = 0; i < 128; i++) { |
211 |
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if (!(i & 0xf)) |
212 |
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putchar('\n'); |
214 |
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} |
215 |
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printf("\n] def\n"); |
216 |
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printf("/scanline %d string def\n", xmax); |
217 |
+ |
printf("/nrept 0 def\n"); |
218 |
+ |
printf("/readbyte { currentfile read not {stop} if } def\n"); |
219 |
+ |
printf("/decode { codetab exch get } def\n"); |
220 |
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printf("/%s {\n", nam); |
221 |
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printf("\t{ 0 1 %d { scanline exch\n", xmax-1); |
222 |
< |
printf("\t\t{ decode currentfile read not {stop} if get\n"); |
223 |
< |
printf("\tdup 0 lt {pop} {exit} ifelse } loop put } for\n"); |
224 |
< |
printf("} stopped {pop pop pop 0 string} {scanline} ifelse } def\n"); |
222 |
> |
printf("\t\tnrept 0 le\n"); |
223 |
> |
printf("\t\t\t{ { readbyte dup %d eq\n", RUNCHR); |
224 |
> |
printf("\t\t\t\t\t{ pop /nrept readbyte %d sub def\n", RSTRT-MINRUN+1); |
225 |
> |
printf("\t\t\t\t\t\t/reptv readbyte decode def\n"); |
226 |
> |
printf("\t\t\t\t\t\treptv exit }\n"); |
227 |
> |
printf("\t\t\t\t\t{ decode dup 0 lt {pop} {exit} ifelse }\n"); |
228 |
> |
printf("\t\t\t\tifelse } loop }\n"); |
229 |
> |
printf("\t\t\t{ /nrept nrept 1 sub def reptv }\n"); |
230 |
> |
printf("\t\tifelse put\n"); |
231 |
> |
printf("\t\t} for\n"); |
232 |
> |
printf("\t} stopped {pop pop 0 string} {scanline} ifelse\n"); |
233 |
> |
printf("} bind def\n"); |
234 |
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} |
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|
|
236 |
|
|
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ra2ps() /* convert Radiance scanlines to 6-bit */ |
238 |
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{ |
239 |
< |
COLR *scanin; |
208 |
< |
register int col = 0; |
239 |
> |
register COLR *scanin; |
240 |
|
register int c; |
241 |
+ |
int lastc, cnt; |
242 |
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register int x; |
243 |
|
int y; |
244 |
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/* allocate scanline */ |
250 |
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if (freadcolrs(scanin, xmax, stdin) < 0) |
251 |
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quiterr("error reading Radiance picture"); |
252 |
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normcolrs(scanin, xmax, bradj); /* normalize */ |
253 |
+ |
lastc = -1; cnt = 0; |
254 |
|
for (x = 0; x < xmax; x++) { |
255 |
< |
if (!(col++ & 0x3f)) |
223 |
< |
putchar('\n'); |
224 |
< |
c = normbright(scanin[x]) + (random()&3); |
255 |
> |
c = normbright(scanin[x]) + 2; |
256 |
|
if (c > 255) c = 255; |
257 |
< |
putchar(code[c>>2]); |
257 |
> |
c = code[c>>2]; |
258 |
> |
if (c == lastc && cnt < MAXRUN) |
259 |
> |
cnt++; |
260 |
> |
else { |
261 |
> |
putrle(cnt, lastc); |
262 |
> |
lastc = c; |
263 |
> |
cnt = 1; |
264 |
> |
} |
265 |
|
} |
266 |
+ |
putrle(cnt, lastc); |
267 |
|
if (ferror(stdout)) |
268 |
|
quiterr("error writing PostScript file"); |
269 |
|
} |
270 |
|
putchar('\n'); |
271 |
|
/* free scanline */ |
272 |
|
free((char *)scanin); |
273 |
+ |
} |
274 |
+ |
|
275 |
+ |
|
276 |
+ |
putrle(cnt, cod) /* put out cnt of cod */ |
277 |
+ |
register int cnt, cod; |
278 |
+ |
{ |
279 |
+ |
static int col = 0; |
280 |
+ |
|
281 |
+ |
if (cnt >= MINRUN) { |
282 |
+ |
col += 3; |
283 |
+ |
putchar(RUNCHR); |
284 |
+ |
putchar(RSTRT-MINRUN+cnt); |
285 |
+ |
putchar(cod); |
286 |
+ |
} else { |
287 |
+ |
col += cnt; |
288 |
+ |
while (cnt-- > 0) |
289 |
+ |
putchar(cod); |
290 |
+ |
} |
291 |
+ |
if (col >= 72) { |
292 |
+ |
putchar('\n'); |
293 |
+ |
col = 0; |
294 |
+ |
} |
295 |
|
} |