1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.22 |
static const char RCSid[] = "$Id$"; |
3 |
greg |
1.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* Combine picture files according to calcomp functions. |
6 |
|
|
* |
7 |
|
|
* 1/4/89 |
8 |
|
|
*/ |
9 |
|
|
|
10 |
greg |
2.10 |
#include "standard.h" |
11 |
greg |
1.1 |
|
12 |
|
|
#include "color.h" |
13 |
|
|
|
14 |
|
|
#include "calcomp.h" |
15 |
|
|
|
16 |
greg |
2.10 |
#include "view.h" |
17 |
|
|
|
18 |
greg |
1.6 |
#define MAXINP 32 /* maximum number of input files */ |
19 |
greg |
2.22 |
#define WINSIZ 64 /* scanline window size */ |
20 |
greg |
2.13 |
#define MIDSCN ((WINSIZ-1)/2+1) |
21 |
greg |
1.1 |
|
22 |
|
|
struct { |
23 |
greg |
1.19 |
char *name; /* file or command name */ |
24 |
greg |
1.1 |
FILE *fp; /* stream pointer */ |
25 |
greg |
2.10 |
VIEW vw; /* view for picture */ |
26 |
|
|
RESOLU rs; /* image resolution and orientation */ |
27 |
greg |
2.17 |
float pa; /* pixel aspect ratio */ |
28 |
greg |
1.14 |
COLOR *scan[WINSIZ]; /* input scanline window */ |
29 |
greg |
1.3 |
COLOR coef; /* coefficient */ |
30 |
greg |
1.17 |
COLOR expos; /* recorded exposure */ |
31 |
greg |
1.1 |
} input[MAXINP]; /* input pictures */ |
32 |
|
|
|
33 |
|
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int nfiles; /* number of input files */ |
34 |
|
|
|
35 |
greg |
2.16 |
char ourfmt[LPICFMT+1] = PICFMT; /* input picture format */ |
36 |
|
|
|
37 |
greg |
2.6 |
char Command[] = "<Command>"; |
38 |
greg |
1.21 |
char vcolin[3][4] = {"ri", "gi", "bi"}; |
39 |
|
|
char vcolout[3][4] = {"ro", "go", "bo"}; |
40 |
greg |
1.15 |
char vbrtin[] = "li"; |
41 |
|
|
char vbrtout[] = "lo"; |
42 |
greg |
1.21 |
char vcolexp[3][4] = {"re", "ge", "be"}; |
43 |
greg |
1.17 |
char vbrtexp[] = "le"; |
44 |
greg |
2.18 |
char vpixaspect[] = "pa"; |
45 |
greg |
1.1 |
|
46 |
greg |
2.18 |
char vray[7][4] = {"Ox", "Oy", "Oz", "Dx", "Dy", "Dz", "T"}; |
47 |
greg |
2.10 |
|
48 |
greg |
2.17 |
char vpsize[] = "S"; |
49 |
|
|
|
50 |
greg |
1.18 |
char vnfiles[] = "nfiles"; |
51 |
greg |
2.18 |
char vwhteff[] = "WE"; |
52 |
greg |
1.18 |
char vxmax[] = "xmax"; |
53 |
|
|
char vymax[] = "ymax"; |
54 |
|
|
char vxres[] = "xres"; |
55 |
|
|
char vyres[] = "yres"; |
56 |
|
|
char vxpos[] = "x"; |
57 |
|
|
char vypos[] = "y"; |
58 |
greg |
1.1 |
|
59 |
|
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int nowarn = 0; /* no warning messages? */ |
60 |
|
|
|
61 |
greg |
1.18 |
int xmax = 0, ymax = 0; /* input resolution */ |
62 |
greg |
1.9 |
|
63 |
greg |
1.18 |
int xscan, yscan; /* input position */ |
64 |
greg |
1.1 |
|
65 |
greg |
1.18 |
int xres, yres; /* output resolution */ |
66 |
greg |
1.1 |
|
67 |
greg |
1.18 |
int xpos, ypos; /* output position */ |
68 |
|
|
|
69 |
greg |
2.10 |
char *progname; /* global argv[0] */ |
70 |
|
|
|
71 |
greg |
1.10 |
int wrongformat = 0; |
72 |
greg |
2.10 |
int gotview; |
73 |
greg |
1.1 |
|
74 |
greg |
1.19 |
FILE *popen(); |
75 |
greg |
1.10 |
|
76 |
greg |
2.7 |
extern char *emalloc(); |
77 |
greg |
1.19 |
|
78 |
greg |
2.7 |
|
79 |
greg |
1.1 |
main(argc, argv) |
80 |
|
|
int argc; |
81 |
|
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char *argv[]; |
82 |
|
|
{ |
83 |
greg |
1.18 |
int original; |
84 |
greg |
1.3 |
double f; |
85 |
greg |
1.14 |
int a, i; |
86 |
greg |
2.7 |
#ifdef MSDOS |
87 |
|
|
extern int _fmode; |
88 |
|
|
_fmode = O_BINARY; |
89 |
|
|
setmode(fileno(stdin), O_BINARY); |
90 |
|
|
setmode(fileno(stdout), O_BINARY); |
91 |
|
|
#endif |
92 |
greg |
2.10 |
progname = argv[0]; |
93 |
greg |
1.15 |
/* scan options */ |
94 |
|
|
for (a = 1; a < argc; a++) { |
95 |
greg |
1.1 |
if (argv[a][0] == '-') |
96 |
|
|
switch (argv[a][1]) { |
97 |
|
|
case 'x': |
98 |
|
|
case 'y': |
99 |
greg |
1.18 |
a++; |
100 |
greg |
1.15 |
continue; |
101 |
greg |
1.1 |
case 'w': |
102 |
|
|
nowarn = !nowarn; |
103 |
greg |
1.15 |
continue; |
104 |
greg |
1.1 |
case 'f': |
105 |
|
|
case 'e': |
106 |
greg |
1.16 |
a++; |
107 |
greg |
1.15 |
continue; |
108 |
greg |
1.1 |
} |
109 |
greg |
1.15 |
break; |
110 |
|
|
} |
111 |
greg |
2.14 |
newheader("RADIANCE", stdout); /* start header */ |
112 |
greg |
2.22 |
fputnow(stdout); |
113 |
greg |
1.15 |
/* process files */ |
114 |
greg |
1.17 |
for (nfiles = 0; nfiles < MAXINP; nfiles++) { |
115 |
greg |
1.3 |
setcolor(input[nfiles].coef, 1.0, 1.0, 1.0); |
116 |
greg |
1.17 |
setcolor(input[nfiles].expos, 1.0, 1.0, 1.0); |
117 |
greg |
2.10 |
copystruct(&input[nfiles].vw, &stdview); |
118 |
greg |
2.17 |
input[nfiles].pa = 1.0; |
119 |
greg |
1.17 |
} |
120 |
greg |
1.1 |
nfiles = 0; |
121 |
greg |
1.18 |
original = 0; |
122 |
greg |
1.1 |
for ( ; a < argc; a++) { |
123 |
|
|
if (nfiles >= MAXINP) { |
124 |
|
|
eputs(argv[0]); |
125 |
|
|
eputs(": too many picture files\n"); |
126 |
|
|
quit(1); |
127 |
|
|
} |
128 |
greg |
1.3 |
if (argv[a][0] == '-') |
129 |
|
|
switch (argv[a][1]) { |
130 |
|
|
case '\0': |
131 |
|
|
input[nfiles].name = "<stdin>"; |
132 |
|
|
input[nfiles].fp = stdin; |
133 |
|
|
break; |
134 |
greg |
1.17 |
case 'o': |
135 |
|
|
original++; |
136 |
greg |
1.22 |
continue; |
137 |
greg |
1.3 |
case 's': |
138 |
|
|
f = atof(argv[++a]); |
139 |
|
|
scalecolor(input[nfiles].coef, f); |
140 |
|
|
continue; |
141 |
|
|
case 'c': |
142 |
|
|
colval(input[nfiles].coef,RED)*=atof(argv[++a]); |
143 |
|
|
colval(input[nfiles].coef,GRN)*=atof(argv[++a]); |
144 |
|
|
colval(input[nfiles].coef,BLU)*=atof(argv[++a]); |
145 |
|
|
continue; |
146 |
|
|
default: |
147 |
|
|
goto usage; |
148 |
|
|
} |
149 |
|
|
else { |
150 |
greg |
2.2 |
if (argv[a][0] == '!') { |
151 |
greg |
2.6 |
input[nfiles].name = Command; |
152 |
greg |
2.2 |
input[nfiles].fp = popen(argv[a]+1, "r"); |
153 |
|
|
} else { |
154 |
|
|
input[nfiles].name = argv[a]; |
155 |
|
|
input[nfiles].fp = fopen(argv[a], "r"); |
156 |
|
|
} |
157 |
greg |
1.1 |
if (input[nfiles].fp == NULL) { |
158 |
greg |
1.6 |
perror(argv[a]); |
159 |
greg |
1.1 |
quit(1); |
160 |
|
|
} |
161 |
|
|
} |
162 |
greg |
1.16 |
checkfile(); |
163 |
greg |
1.18 |
if (original) { |
164 |
|
|
colval(input[nfiles].coef,RED) /= |
165 |
|
|
colval(input[nfiles].expos,RED); |
166 |
|
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colval(input[nfiles].coef,GRN) /= |
167 |
|
|
colval(input[nfiles].expos,GRN); |
168 |
|
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colval(input[nfiles].coef,BLU) /= |
169 |
|
|
colval(input[nfiles].expos,BLU); |
170 |
greg |
2.22 |
setcolor(input[nfiles].expos, 1.0, 1.0, 1.0); |
171 |
greg |
1.18 |
} |
172 |
|
|
nfiles++; |
173 |
greg |
1.17 |
original = 0; |
174 |
greg |
1.15 |
} |
175 |
greg |
1.18 |
init(); /* set constants */ |
176 |
greg |
1.15 |
/* go back and get expressions */ |
177 |
|
|
for (a = 1; a < argc; a++) { |
178 |
|
|
if (argv[a][0] == '-') |
179 |
|
|
switch (argv[a][1]) { |
180 |
|
|
case 'x': |
181 |
greg |
1.21 |
varset(vxres, ':', eval(argv[++a])); |
182 |
greg |
1.18 |
continue; |
183 |
greg |
1.15 |
case 'y': |
184 |
greg |
1.21 |
varset(vyres, ':', eval(argv[++a])); |
185 |
greg |
1.16 |
continue; |
186 |
greg |
1.15 |
case 'w': |
187 |
|
|
continue; |
188 |
|
|
case 'f': |
189 |
|
|
fcompile(argv[++a]); |
190 |
|
|
continue; |
191 |
|
|
case 'e': |
192 |
|
|
scompile(argv[++a], NULL, 0); |
193 |
|
|
continue; |
194 |
|
|
} |
195 |
|
|
break; |
196 |
|
|
} |
197 |
greg |
1.18 |
/* set/get output resolution */ |
198 |
|
|
if (!vardefined(vxres)) |
199 |
|
|
varset(vxres, ':', (double)xmax); |
200 |
|
|
if (!vardefined(vyres)) |
201 |
|
|
varset(vyres, ':', (double)ymax); |
202 |
|
|
xres = varvalue(vxres) + .5; |
203 |
|
|
yres = varvalue(vyres) + .5; |
204 |
|
|
if (xres <= 0 || yres <= 0) { |
205 |
|
|
eputs(argv[0]); |
206 |
|
|
eputs(": illegal output resolution\n"); |
207 |
|
|
quit(1); |
208 |
|
|
} |
209 |
greg |
1.15 |
/* complete header */ |
210 |
|
|
printargs(argc, argv, stdout); |
211 |
greg |
2.16 |
if (strcmp(ourfmt, PICFMT)) |
212 |
|
|
fputformat(ourfmt, stdout); /* print format if known */ |
213 |
greg |
1.15 |
putchar('\n'); |
214 |
greg |
1.23 |
fprtresolu(xres, yres, stdout); |
215 |
greg |
1.15 |
/* combine pictures */ |
216 |
|
|
combine(); |
217 |
|
|
quit(0); |
218 |
|
|
usage: |
219 |
|
|
eputs("Usage: "); |
220 |
|
|
eputs(argv[0]); |
221 |
|
|
eputs( |
222 |
greg |
2.9 |
" [-w][-x xr][-y yr][-e expr][-f file] [ [-o][-s f][-c r g b] pic ..]\n"); |
223 |
greg |
1.15 |
quit(1); |
224 |
|
|
} |
225 |
|
|
|
226 |
|
|
|
227 |
greg |
2.22 |
tabputs(s) /* put out string preceded by a tab */ |
228 |
greg |
1.15 |
char *s; |
229 |
|
|
{ |
230 |
|
|
char fmt[32]; |
231 |
|
|
double d; |
232 |
|
|
COLOR ctmp; |
233 |
|
|
|
234 |
greg |
2.14 |
if (isheadid(s)) /* header id */ |
235 |
gwlarson |
2.21 |
return(0); /* don't echo */ |
236 |
greg |
2.14 |
if (formatval(fmt, s)) { /* check format */ |
237 |
greg |
2.16 |
if (globmatch(ourfmt, fmt)) { |
238 |
|
|
wrongformat = 0; |
239 |
|
|
strcpy(ourfmt, fmt); |
240 |
|
|
} else |
241 |
greg |
2.22 |
wrongformat = globmatch(PICFMT, fmt) ? 1 : -1; |
242 |
gwlarson |
2.21 |
return(0); /* don't echo */ |
243 |
greg |
1.17 |
} |
244 |
|
|
if (isexpos(s)) { /* exposure */ |
245 |
|
|
d = exposval(s); |
246 |
|
|
scalecolor(input[nfiles].expos, d); |
247 |
|
|
} else if (iscolcor(s)) { /* color correction */ |
248 |
greg |
1.15 |
colcorval(ctmp, s); |
249 |
greg |
1.17 |
multcolor(input[nfiles].expos, ctmp); |
250 |
greg |
2.18 |
} else if (isaspect(s)) |
251 |
greg |
2.17 |
input[nfiles].pa *= aspectval(s); |
252 |
greg |
2.18 |
else if (isview(s) && sscanview(&input[nfiles].vw, s) > 0) |
253 |
greg |
2.10 |
gotview++; |
254 |
greg |
1.17 |
/* echo line */ |
255 |
|
|
putchar('\t'); |
256 |
gwlarson |
2.21 |
return(fputs(s, stdout)); |
257 |
greg |
1.16 |
} |
258 |
greg |
1.15 |
|
259 |
greg |
1.16 |
|
260 |
|
|
checkfile() /* ready a file */ |
261 |
|
|
{ |
262 |
|
|
register int i; |
263 |
|
|
/* process header */ |
264 |
greg |
2.10 |
gotview = 0; |
265 |
greg |
1.16 |
fputs(input[nfiles].name, stdout); |
266 |
|
|
fputs(":\n", stdout); |
267 |
greg |
2.22 |
getheader(input[nfiles].fp, tabputs, NULL); |
268 |
|
|
if (wrongformat < 0) { |
269 |
greg |
1.16 |
eputs(input[nfiles].name); |
270 |
greg |
2.22 |
eputs(": not a Radiance picture\n"); |
271 |
greg |
1.16 |
quit(1); |
272 |
|
|
} |
273 |
greg |
2.22 |
if (wrongformat > 0) { |
274 |
|
|
wputs(input[nfiles].name); |
275 |
|
|
wputs(": warning -- incompatible picture format\n"); |
276 |
|
|
} |
277 |
greg |
2.10 |
if (!gotview || setview(&input[nfiles].vw) != NULL) |
278 |
|
|
input[nfiles].vw.type = 0; |
279 |
|
|
if (!fgetsresolu(&input[nfiles].rs, input[nfiles].fp)) { |
280 |
greg |
1.16 |
eputs(input[nfiles].name); |
281 |
|
|
eputs(": bad picture size\n"); |
282 |
|
|
quit(1); |
283 |
|
|
} |
284 |
greg |
1.18 |
if (xmax == 0 && ymax == 0) { |
285 |
greg |
2.10 |
xmax = scanlen(&input[nfiles].rs); |
286 |
|
|
ymax = numscans(&input[nfiles].rs); |
287 |
|
|
} else if (scanlen(&input[nfiles].rs) != xmax || |
288 |
|
|
numscans(&input[nfiles].rs) != ymax) { |
289 |
greg |
1.16 |
eputs(input[nfiles].name); |
290 |
|
|
eputs(": resolution mismatch\n"); |
291 |
|
|
quit(1); |
292 |
|
|
} |
293 |
|
|
/* allocate scanlines */ |
294 |
|
|
for (i = 0; i < WINSIZ; i++) |
295 |
greg |
1.18 |
input[nfiles].scan[i] = (COLOR *)emalloc(xmax*sizeof(COLOR)); |
296 |
greg |
1.15 |
} |
297 |
|
|
|
298 |
|
|
|
299 |
greg |
2.16 |
double |
300 |
|
|
rgb_bright(clr) |
301 |
|
|
COLOR clr; |
302 |
|
|
{ |
303 |
|
|
return(bright(clr)); |
304 |
|
|
} |
305 |
|
|
|
306 |
|
|
|
307 |
|
|
double |
308 |
|
|
xyz_bright(clr) |
309 |
|
|
COLOR clr; |
310 |
|
|
{ |
311 |
|
|
return(clr[CIEY]); |
312 |
|
|
} |
313 |
|
|
|
314 |
|
|
|
315 |
|
|
double (*ourbright)() = rgb_bright; |
316 |
|
|
|
317 |
|
|
|
318 |
greg |
1.18 |
init() /* perform final setup */ |
319 |
greg |
1.15 |
{ |
320 |
greg |
2.18 |
double l_colin(), l_expos(), l_pixaspect(), l_ray(), l_psize(); |
321 |
greg |
1.16 |
register int i; |
322 |
greg |
1.15 |
/* define constants */ |
323 |
greg |
2.19 |
varset("PI", ':', PI); |
324 |
greg |
1.15 |
varset(vnfiles, ':', (double)nfiles); |
325 |
greg |
1.18 |
varset(vxmax, ':', (double)xmax); |
326 |
|
|
varset(vymax, ':', (double)ymax); |
327 |
greg |
1.15 |
/* set functions */ |
328 |
|
|
for (i = 0; i < 3; i++) { |
329 |
greg |
1.17 |
funset(vcolexp[i], 1, ':', l_expos); |
330 |
greg |
1.15 |
funset(vcolin[i], 1, '=', l_colin); |
331 |
|
|
} |
332 |
greg |
1.17 |
funset(vbrtexp, 1, ':', l_expos); |
333 |
greg |
1.15 |
funset(vbrtin, 1, '=', l_colin); |
334 |
greg |
2.18 |
funset(vpixaspect, 1, ':', l_pixaspect); |
335 |
|
|
for (i = 0; i < 7; i++) |
336 |
greg |
2.10 |
funset(vray[i], 1, '=', l_ray); |
337 |
greg |
2.17 |
funset(vpsize, 1, '=', l_psize); |
338 |
greg |
2.16 |
/* set brightness function */ |
339 |
greg |
2.18 |
if (!strcmp(ourfmt, CIEFMT)) { |
340 |
|
|
varset(vwhteff, ':', 1.0); |
341 |
greg |
2.16 |
ourbright = xyz_bright; |
342 |
greg |
2.18 |
} else |
343 |
|
|
varset(vwhteff, ':', WHTEFFICACY); |
344 |
greg |
1.1 |
} |
345 |
|
|
|
346 |
|
|
|
347 |
|
|
combine() /* combine pictures */ |
348 |
|
|
{ |
349 |
greg |
1.8 |
EPNODE *coldef[3], *brtdef; |
350 |
greg |
1.1 |
COLOR *scanout; |
351 |
greg |
1.8 |
double d; |
352 |
greg |
1.1 |
register int i, j; |
353 |
|
|
/* check defined variables */ |
354 |
greg |
1.4 |
for (j = 0; j < 3; j++) { |
355 |
|
|
if (vardefined(vcolout[j])) |
356 |
|
|
coldef[j] = eparse(vcolout[j]); |
357 |
|
|
else |
358 |
|
|
coldef[j] = NULL; |
359 |
|
|
} |
360 |
greg |
1.8 |
if (vardefined(vbrtout)) |
361 |
|
|
brtdef = eparse(vbrtout); |
362 |
|
|
else |
363 |
|
|
brtdef = NULL; |
364 |
greg |
1.1 |
/* allocate scanline */ |
365 |
|
|
scanout = (COLOR *)emalloc(xres*sizeof(COLOR)); |
366 |
greg |
1.18 |
/* set input position */ |
367 |
|
|
yscan = ymax+MIDSCN; |
368 |
greg |
1.1 |
/* combine files */ |
369 |
|
|
for (ypos = yres-1; ypos >= 0; ypos--) { |
370 |
greg |
1.14 |
advance(); |
371 |
greg |
1.11 |
varset(vypos, '=', (double)ypos); |
372 |
greg |
1.8 |
for (xpos = 0; xpos < xres; xpos++) { |
373 |
greg |
1.18 |
xscan = (long)xpos*xmax/xres; |
374 |
greg |
1.11 |
varset(vxpos, '=', (double)xpos); |
375 |
greg |
1.8 |
eclock++; |
376 |
|
|
if (brtdef != NULL) { |
377 |
|
|
d = evalue(brtdef); |
378 |
|
|
if (d < 0.0) |
379 |
|
|
d = 0.0; |
380 |
|
|
setcolor(scanout[xpos], d, d, d); |
381 |
|
|
} else { |
382 |
|
|
for (j = 0; j < 3; j++) { |
383 |
|
|
if (coldef[j] != NULL) { |
384 |
greg |
1.13 |
d = evalue(coldef[j]); |
385 |
greg |
1.8 |
} else { |
386 |
greg |
1.13 |
d = 0.0; |
387 |
greg |
1.8 |
for (i = 0; i < nfiles; i++) |
388 |
greg |
1.18 |
d += colval(input[i].scan[MIDSCN][xscan],j); |
389 |
greg |
1.1 |
} |
390 |
greg |
1.13 |
if (d < 0.0) |
391 |
|
|
d = 0.0; |
392 |
|
|
colval(scanout[xpos],j) = d; |
393 |
greg |
1.8 |
} |
394 |
greg |
1.1 |
} |
395 |
greg |
1.8 |
} |
396 |
|
|
if (fwritescan(scanout, xres, stdout) < 0) { |
397 |
|
|
perror("write error"); |
398 |
|
|
quit(1); |
399 |
|
|
} |
400 |
greg |
1.1 |
} |
401 |
greg |
2.22 |
efree((char *)scanout); |
402 |
greg |
1.1 |
} |
403 |
|
|
|
404 |
|
|
|
405 |
greg |
1.18 |
advance() /* read in data for next scanline */ |
406 |
greg |
1.14 |
{ |
407 |
greg |
1.18 |
int ytarget; |
408 |
greg |
1.14 |
register COLOR *st; |
409 |
|
|
register int i, j; |
410 |
|
|
|
411 |
greg |
1.18 |
for (ytarget = (long)ypos*ymax/yres; yscan > ytarget; yscan--) |
412 |
|
|
for (i = 0; i < nfiles; i++) { |
413 |
|
|
st = input[i].scan[WINSIZ-1]; |
414 |
|
|
for (j = WINSIZ-1; j > 0; j--) /* rotate window */ |
415 |
|
|
input[i].scan[j] = input[i].scan[j-1]; |
416 |
|
|
input[i].scan[0] = st; |
417 |
|
|
if (yscan <= MIDSCN) /* hit bottom? */ |
418 |
|
|
continue; |
419 |
greg |
2.4 |
if (freadscan(st, xmax, input[i].fp) < 0) { /* read */ |
420 |
greg |
1.18 |
eputs(input[i].name); |
421 |
|
|
eputs(": read error\n"); |
422 |
|
|
quit(1); |
423 |
|
|
} |
424 |
greg |
2.4 |
if (fabs(colval(input[i].coef,RED)-1.0) > 1e-3 || |
425 |
|
|
fabs(colval(input[i].coef,GRN)-1.0) > 1e-3 || |
426 |
|
|
fabs(colval(input[i].coef,BLU)-1.0) > 1e-3) |
427 |
|
|
for (j = 0; j < xmax; j++) /* adjust color */ |
428 |
|
|
multcolor(st[j], input[i].coef); |
429 |
greg |
1.14 |
} |
430 |
|
|
} |
431 |
|
|
|
432 |
|
|
|
433 |
greg |
1.1 |
double |
434 |
greg |
1.17 |
l_expos(nam) /* return picture exposure */ |
435 |
greg |
1.15 |
register char *nam; |
436 |
greg |
1.1 |
{ |
437 |
greg |
1.15 |
register int fn, n; |
438 |
greg |
1.14 |
|
439 |
greg |
1.18 |
fn = argument(1) - .5; |
440 |
|
|
if (fn < 0 || fn >= nfiles) |
441 |
|
|
return(1.0); |
442 |
greg |
1.17 |
if (nam == vbrtexp) |
443 |
greg |
2.16 |
return((*ourbright)(input[fn].expos)); |
444 |
greg |
1.15 |
n = 3; |
445 |
|
|
while (n--) |
446 |
greg |
1.17 |
if (nam == vcolexp[n]) |
447 |
|
|
return(colval(input[fn].expos,n)); |
448 |
|
|
eputs("Bad call to l_expos()!\n"); |
449 |
greg |
1.15 |
quit(1); |
450 |
|
|
} |
451 |
|
|
|
452 |
|
|
|
453 |
|
|
double |
454 |
greg |
2.18 |
l_pixaspect() /* return pixel aspect ratio */ |
455 |
|
|
{ |
456 |
|
|
register int fn; |
457 |
|
|
|
458 |
|
|
fn = argument(1) - .5; |
459 |
|
|
if (fn < 0 || fn >= nfiles) |
460 |
|
|
return(1.0); |
461 |
|
|
return(input[fn].pa); |
462 |
|
|
} |
463 |
|
|
|
464 |
|
|
|
465 |
|
|
double |
466 |
greg |
1.15 |
l_colin(nam) /* return color value for picture */ |
467 |
|
|
register char *nam; |
468 |
|
|
{ |
469 |
|
|
int fn; |
470 |
|
|
register int n, xoff, yoff; |
471 |
|
|
double d; |
472 |
|
|
|
473 |
greg |
2.18 |
fn = argument(1) - .5; |
474 |
greg |
1.16 |
if (fn < 0 || fn >= nfiles) { |
475 |
greg |
1.15 |
errno = EDOM; |
476 |
|
|
return(0.0); |
477 |
|
|
} |
478 |
greg |
1.14 |
xoff = yoff = 0; |
479 |
|
|
n = nargum(); |
480 |
|
|
if (n >= 2) { |
481 |
|
|
d = argument(2); |
482 |
|
|
if (d < 0.0) { |
483 |
|
|
xoff = d-.5; |
484 |
greg |
1.18 |
if (xscan+xoff < 0) |
485 |
|
|
xoff = -xscan; |
486 |
greg |
1.14 |
} else { |
487 |
|
|
xoff = d+.5; |
488 |
greg |
1.18 |
if (xscan+xoff >= xmax) |
489 |
|
|
xoff = xmax-1-xscan; |
490 |
greg |
1.14 |
} |
491 |
|
|
} |
492 |
|
|
if (n >= 3) { |
493 |
|
|
d = argument(3); |
494 |
|
|
if (d < 0.0) { |
495 |
|
|
yoff = d-.5; |
496 |
|
|
if (yoff+MIDSCN < 0) |
497 |
|
|
yoff = -MIDSCN; |
498 |
greg |
1.18 |
if (yscan+yoff < 0) |
499 |
|
|
yoff = -yscan; |
500 |
greg |
1.14 |
} else { |
501 |
|
|
yoff = d+.5; |
502 |
|
|
if (yoff+MIDSCN >= WINSIZ) |
503 |
|
|
yoff = WINSIZ-1-MIDSCN; |
504 |
greg |
1.18 |
if (yscan+yoff >= ymax) |
505 |
|
|
yoff = ymax-1-yscan; |
506 |
greg |
1.14 |
} |
507 |
|
|
} |
508 |
greg |
1.15 |
if (nam == vbrtin) |
509 |
greg |
2.16 |
return((*ourbright)(input[fn].scan[MIDSCN+yoff][xscan+xoff])); |
510 |
greg |
1.15 |
n = 3; |
511 |
|
|
while (n--) |
512 |
|
|
if (nam == vcolin[n]) |
513 |
greg |
1.18 |
return(colval(input[fn].scan[MIDSCN+yoff][xscan+xoff],n)); |
514 |
greg |
1.15 |
eputs("Bad call to l_colin()!\n"); |
515 |
greg |
2.10 |
quit(1); |
516 |
|
|
} |
517 |
|
|
|
518 |
|
|
|
519 |
|
|
double |
520 |
|
|
l_ray(nam) /* return ray origin or direction */ |
521 |
|
|
register char *nam; |
522 |
|
|
{ |
523 |
greg |
2.15 |
static unsigned long ltick[MAXINP]; |
524 |
greg |
2.10 |
static FVECT lorg[MAXINP], ldir[MAXINP]; |
525 |
greg |
2.18 |
static double ldist[MAXINP]; |
526 |
greg |
2.10 |
FLOAT loc[2]; |
527 |
|
|
int fn; |
528 |
|
|
register int i; |
529 |
|
|
|
530 |
greg |
2.18 |
fn = argument(1) - .5; |
531 |
greg |
2.10 |
if (fn < 0 || fn >= nfiles) { |
532 |
|
|
errno = EDOM; |
533 |
|
|
return(0.0); |
534 |
|
|
} |
535 |
greg |
2.22 |
if (ltick[fn] != eclock) { /* need to compute? */ |
536 |
greg |
2.10 |
lorg[fn][0] = lorg[fn][1] = lorg[fn][2] = 0.0; |
537 |
|
|
ldir[fn][0] = ldir[fn][1] = ldir[fn][2] = 0.0; |
538 |
greg |
2.20 |
ldist[fn] = -1.0; |
539 |
greg |
2.10 |
if (input[fn].vw.type == 0) |
540 |
greg |
2.12 |
errno = EDOM; |
541 |
greg |
2.10 |
else { |
542 |
greg |
2.11 |
pix2loc(loc, &input[fn].rs, xscan, ymax-1-yscan); |
543 |
greg |
2.18 |
ldist[fn] = viewray(lorg[fn], ldir[fn], |
544 |
|
|
&input[fn].vw, loc[0], loc[1]); |
545 |
greg |
2.10 |
} |
546 |
greg |
2.18 |
ltick[fn] = eclock; |
547 |
greg |
2.10 |
} |
548 |
greg |
2.18 |
if (nam == vray[i=6]) |
549 |
|
|
return(ldist[fn]); |
550 |
greg |
2.10 |
while (i--) |
551 |
|
|
if (nam == vray[i]) |
552 |
|
|
return(i < 3 ? lorg[fn][i] : ldir[fn][i-3]); |
553 |
|
|
eputs("Bad call to l_ray()!\n"); |
554 |
greg |
1.15 |
quit(1); |
555 |
greg |
2.17 |
} |
556 |
|
|
|
557 |
|
|
|
558 |
|
|
double |
559 |
|
|
l_psize() /* compute pixel size in steradians */ |
560 |
|
|
{ |
561 |
|
|
static unsigned long ltick[MAXINP]; |
562 |
|
|
static double psize[MAXINP]; |
563 |
greg |
2.18 |
FVECT dir0, org, dirx, diry; |
564 |
|
|
FLOAT locx[2], locy[2]; |
565 |
greg |
2.17 |
double d; |
566 |
|
|
int fn; |
567 |
greg |
2.18 |
register int i; |
568 |
greg |
2.17 |
|
569 |
|
|
d = argument(1); |
570 |
greg |
2.18 |
if (d < .5 || d >= nfiles+.5) { |
571 |
greg |
2.17 |
errno = EDOM; |
572 |
|
|
return(0.0); |
573 |
|
|
} |
574 |
greg |
2.18 |
fn = d - .5; |
575 |
greg |
2.22 |
if (ltick[fn] != eclock) { /* need to compute? */ |
576 |
greg |
2.18 |
psize[fn] = 0.0; |
577 |
|
|
if (input[fn].vw.type == 0) |
578 |
greg |
2.17 |
errno = EDOM; |
579 |
greg |
2.18 |
else if (input[fn].vw.type != VT_PAR && |
580 |
|
|
funvalue(vray[6], 1, &d) >= 0) { |
581 |
|
|
for (i = 0; i < 3; i++) |
582 |
|
|
dir0[i] = funvalue(vray[3+i], 1, &d); |
583 |
|
|
pix2loc(locx, &input[fn].rs, xscan+1, ymax-1-yscan); |
584 |
|
|
pix2loc(locy, &input[fn].rs, xscan, ymax-yscan); |
585 |
|
|
if (viewray(org, dirx, &input[fn].vw, |
586 |
|
|
locx[0], locx[1]) >= 0 && |
587 |
|
|
viewray(org, diry, &input[fn].vw, |
588 |
|
|
locy[0], locy[1]) >= 0) { |
589 |
greg |
2.17 |
/* approximate solid angle */ |
590 |
greg |
2.18 |
for (i = 0; i < 3; i++) { |
591 |
|
|
dirx[i] -= dir0[i]; |
592 |
|
|
diry[i] -= dir0[i]; |
593 |
|
|
} |
594 |
|
|
fcross(dir0, dirx, diry); |
595 |
greg |
2.22 |
psize[fn] = sqrt(DOT(dir0,dir0)); |
596 |
greg |
2.17 |
} |
597 |
|
|
} |
598 |
greg |
2.18 |
ltick[fn] = eclock; |
599 |
|
|
} |
600 |
greg |
2.17 |
return(psize[fn]); |
601 |
greg |
1.1 |
} |
602 |
|
|
|
603 |
|
|
|
604 |
greg |
2.22 |
void |
605 |
greg |
1.1 |
wputs(msg) |
606 |
|
|
char *msg; |
607 |
|
|
{ |
608 |
|
|
if (!nowarn) |
609 |
|
|
eputs(msg); |
610 |
|
|
} |
611 |
|
|
|
612 |
|
|
|
613 |
greg |
2.22 |
void |
614 |
greg |
1.1 |
eputs(msg) |
615 |
|
|
char *msg; |
616 |
|
|
{ |
617 |
|
|
fputs(msg, stderr); |
618 |
|
|
} |
619 |
|
|
|
620 |
|
|
|
621 |
greg |
2.22 |
void |
622 |
greg |
2.4 |
quit(code) /* exit gracefully */ |
623 |
|
|
int code; |
624 |
|
|
{ |
625 |
greg |
2.5 |
register int i; |
626 |
|
|
/* close input files */ |
627 |
|
|
for (i = 0; i < nfiles; i++) |
628 |
greg |
2.6 |
if (input[i].name == Command) |
629 |
|
|
pclose(input[i].fp); |
630 |
|
|
else |
631 |
|
|
fclose(input[i].fp); |
632 |
greg |
1.1 |
exit(code); |
633 |
|
|
} |