15 |
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16 |
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#include "color.h" |
17 |
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18 |
+ |
#include "random.h" |
19 |
+ |
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20 |
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#include "targa.h" |
21 |
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22 |
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#define goodpic(h) (((h)->dataType==IM_RGB || (h)->dataType==IM_CRGB) \ |
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/* put header */ |
96 |
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printargs(argc, argv, stdout); |
97 |
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putchar('\n'); |
98 |
< |
printf("-Y %d +X %d\n", head.y, head.x); |
98 |
> |
fputresolu(YMAJOR|YDECR, head.x, head.y, stdout); |
99 |
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/* convert file */ |
100 |
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tg2ra(&head); |
101 |
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} else { |
102 |
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getheader(stdin, NULL); |
103 |
< |
if (scanf("-Y %d +X %d\n", &head.y, &head.x) != 2) |
103 |
> |
if (fgetresolu(&head.x, &head.y, stdin) != (YMAJOR|YDECR)) |
104 |
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quiterr("bad picture file"); |
105 |
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/* assign header */ |
106 |
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head.textSize = 0; |
278 |
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ra2tg(hp) /* convert radiance to targa file */ |
279 |
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struct hdStruct *hp; |
280 |
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{ |
281 |
+ |
#define map(v) (v >= 1.0 ? 1023 : (int)(v*1023.+.5)) |
282 |
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unsigned char gmap[1024]; |
283 |
< |
register int i, j, c; |
283 |
> |
register int i, j; |
284 |
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unsigned char *tarData; |
285 |
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COLOR *inline; |
286 |
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/* set up gamma correction */ |
287 |
< |
for (i = 0; i < 1024; i++) |
288 |
< |
gmap[i] = 256.*pow((i+.5)/1024., 1./gamma); |
287 |
> |
for (i = 0; i < 1024; i++) { |
288 |
> |
j = 256.*pow((i+.5)/1024., 1./gamma); |
289 |
> |
gmap[i] = hp->dataBits == 16 && j > 248 ? 248 : j; |
290 |
> |
} |
291 |
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/* allocate space for data */ |
292 |
|
inline = (COLOR *)emalloc(hp->x*sizeof(COLOR)); |
293 |
|
tarData = taralloc(hp); |
299 |
|
register unsigned short *dp; |
300 |
|
dp = (unsigned short *)tarData + j*hp->x; |
301 |
|
for (i = 0; i < hp->x; i++) { |
302 |
< |
c = 1024.*colval(inline[i],RED); |
303 |
< |
if (c > 1023) c = 1023; |
304 |
< |
*dp = (gmap[c] & 0xf8)<<7; |
305 |
< |
c = 1024.*colval(inline[i],GRN); |
306 |
< |
if (c > 1023) c = 1023; |
307 |
< |
*dp |= (gmap[c] & 0xf8)<<2; |
303 |
< |
c = 1024.*colval(inline[i],BLU); |
304 |
< |
if (c > 1023) c = 1023; |
305 |
< |
*dp++ |= gmap[c]>>3; |
302 |
> |
*dp = ((gmap[map(colval(inline[i],RED))] |
303 |
> |
+(random()&7)) & 0xf8)<<7; |
304 |
> |
*dp |= ((gmap[map(colval(inline[i],GRN))] |
305 |
> |
+(random()&7)) & 0xf8)<<2; |
306 |
> |
*dp++ |= (gmap[map(colval(inline[i],BLU))] |
307 |
> |
+(random()&7))>>3; |
308 |
|
} |
309 |
|
} else { /* hp->dataBits == 24 */ |
310 |
|
register unsigned char *dp; |
311 |
|
dp = (unsigned char *)tarData + j*3*hp->x; |
312 |
|
for (i = 0; i < hp->x; i++) { |
313 |
< |
c = 1024.*colval(inline[i],BLU); |
314 |
< |
if (c > 1023) c = 1023; |
315 |
< |
*dp++ = gmap[c]; |
314 |
< |
c = 1024.*colval(inline[i],GRN); |
315 |
< |
if (c > 1023) c = 1023; |
316 |
< |
*dp++ = gmap[c]; |
317 |
< |
c = 1024.*colval(inline[i],RED); |
318 |
< |
if (c > 1023) c = 1023; |
319 |
< |
*dp++ = gmap[c]; |
313 |
> |
*dp++ = gmap[map(colval(inline[i],BLU))]; |
314 |
> |
*dp++ = gmap[map(colval(inline[i],GRN))]; |
315 |
> |
*dp++ = gmap[map(colval(inline[i],RED))]; |
316 |
|
} |
317 |
|
} |
318 |
|
} |
321 |
|
|
322 |
|
free((char *)inline); |
323 |
|
free((char *)tarData); |
324 |
+ |
#undef map |
325 |
|
} |
326 |
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327 |
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