1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: rmatrix.c,v 2.43 2020/03/26 18:05:44 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* General matrix operations. |
6 |
*/ |
7 |
|
8 |
#include <stdlib.h> |
9 |
#include <errno.h> |
10 |
#include "rtio.h" |
11 |
#include "platform.h" |
12 |
#include "resolu.h" |
13 |
#include "paths.h" |
14 |
#include "rmatrix.h" |
15 |
|
16 |
static char rmx_mismatch_warn[] = "WARNING: data type mismatch\n"; |
17 |
|
18 |
/* Allocate a nr x nc matrix with n components */ |
19 |
RMATRIX * |
20 |
rmx_alloc(int nr, int nc, int n) |
21 |
{ |
22 |
RMATRIX *dnew; |
23 |
|
24 |
if ((nr <= 0) | (nc <= 0) | (n <= 0)) |
25 |
return(NULL); |
26 |
dnew = (RMATRIX *)malloc(sizeof(RMATRIX)-sizeof(dnew->mtx) + |
27 |
sizeof(dnew->mtx[0])*(n*nr*nc)); |
28 |
if (!dnew) |
29 |
return(NULL); |
30 |
dnew->nrows = nr; dnew->ncols = nc; dnew->ncomp = n; |
31 |
dnew->dtype = DTdouble; |
32 |
dnew->swapin = 0; |
33 |
dnew->info = NULL; |
34 |
return(dnew); |
35 |
} |
36 |
|
37 |
/* Free a RMATRIX array */ |
38 |
void |
39 |
rmx_free(RMATRIX *rm) |
40 |
{ |
41 |
if (!rm) return; |
42 |
if (rm->info) |
43 |
free(rm->info); |
44 |
free(rm); |
45 |
} |
46 |
|
47 |
/* Resolve data type based on two input types (returns 0 for mismatch) */ |
48 |
int |
49 |
rmx_newtype(int dtyp1, int dtyp2) |
50 |
{ |
51 |
if ((dtyp1==DTxyze) | (dtyp1==DTrgbe) | |
52 |
(dtyp2==DTxyze) | (dtyp2==DTrgbe) |
53 |
&& dtyp1 != dtyp2) |
54 |
return(0); |
55 |
if (dtyp1 < dtyp2) |
56 |
return(dtyp1); |
57 |
return(dtyp2); |
58 |
} |
59 |
|
60 |
/* Append header information associated with matrix data */ |
61 |
int |
62 |
rmx_addinfo(RMATRIX *rm, const char *info) |
63 |
{ |
64 |
if (!rm || !info || !*info) |
65 |
return(0); |
66 |
if (!rm->info) { |
67 |
rm->info = (char *)malloc(strlen(info)+1); |
68 |
if (rm->info) rm->info[0] = '\0'; |
69 |
} else |
70 |
rm->info = (char *)realloc(rm->info, |
71 |
strlen(rm->info)+strlen(info)+1); |
72 |
if (!rm->info) |
73 |
return(0); |
74 |
strcat(rm->info, info); |
75 |
return(1); |
76 |
} |
77 |
|
78 |
static int |
79 |
get_dminfo(char *s, void *p) |
80 |
{ |
81 |
RMATRIX *ip = (RMATRIX *)p; |
82 |
char fmt[MAXFMTLEN]; |
83 |
int i; |
84 |
|
85 |
if (headidval(fmt, s)) |
86 |
return(0); |
87 |
if (!strncmp(s, "NCOMP=", 6)) { |
88 |
ip->ncomp = atoi(s+6); |
89 |
return(0); |
90 |
} |
91 |
if (!strncmp(s, "NROWS=", 6)) { |
92 |
ip->nrows = atoi(s+6); |
93 |
return(0); |
94 |
} |
95 |
if (!strncmp(s, "NCOLS=", 6)) { |
96 |
ip->ncols = atoi(s+6); |
97 |
return(0); |
98 |
} |
99 |
if ((i = isbigendian(s)) >= 0) { |
100 |
ip->swapin = (nativebigendian() != i); |
101 |
return(0); |
102 |
} |
103 |
if (isexpos(s)) { |
104 |
double d = exposval(s); |
105 |
scalecolor(ip->mtx, d); |
106 |
return(0); |
107 |
} |
108 |
if (iscolcor(s)) { |
109 |
COLOR ctmp; |
110 |
colcorval(ctmp, s); |
111 |
multcolor(ip->mtx, ctmp); |
112 |
return(0); |
113 |
} |
114 |
if (!formatval(fmt, s)) { |
115 |
rmx_addinfo(ip, s); |
116 |
return(0); |
117 |
} |
118 |
for (i = 1; i < DTend; i++) |
119 |
if (!strcmp(fmt, cm_fmt_id[i])) { |
120 |
ip->dtype = i; |
121 |
return(0); |
122 |
} |
123 |
return(-1); |
124 |
} |
125 |
|
126 |
static int |
127 |
rmx_load_ascii(RMATRIX *rm, FILE *fp) |
128 |
{ |
129 |
int i, j, k; |
130 |
|
131 |
for (i = 0; i < rm->nrows; i++) |
132 |
for (j = 0; j < rm->ncols; j++) |
133 |
for (k = 0; k < rm->ncomp; k++) |
134 |
if (fscanf(fp, "%lf", &rmx_lval(rm,i,j,k)) != 1) |
135 |
return(0); |
136 |
return(1); |
137 |
} |
138 |
|
139 |
static int |
140 |
rmx_load_float(RMATRIX *rm, FILE *fp) |
141 |
{ |
142 |
int i, j, k; |
143 |
float val[100]; |
144 |
|
145 |
if (rm->ncomp > 100) { |
146 |
fputs("Unsupported # components in rmx_load_float()\n", stderr); |
147 |
exit(1); |
148 |
} |
149 |
for (i = 0; i < rm->nrows; i++) |
150 |
for (j = 0; j < rm->ncols; j++) { |
151 |
if (getbinary(val, sizeof(val[0]), rm->ncomp, fp) != rm->ncomp) |
152 |
return(0); |
153 |
if (rm->swapin) |
154 |
swap32((char *)val, rm->ncomp); |
155 |
for (k = rm->ncomp; k--; ) |
156 |
rmx_lval(rm,i,j,k) = val[k]; |
157 |
} |
158 |
return(1); |
159 |
} |
160 |
|
161 |
static int |
162 |
rmx_load_double(RMATRIX *rm, FILE *fp) |
163 |
{ |
164 |
int i; |
165 |
|
166 |
if ((char *)&rmx_lval(rm,1,0,0) - (char *)&rmx_lval(rm,0,0,0) != |
167 |
sizeof(double)*rm->ncols*rm->ncomp) { |
168 |
fputs("Code error in rmx_load_double()\n", stderr); |
169 |
exit(1); |
170 |
} |
171 |
for (i = 0; i < rm->nrows; i++) { |
172 |
if (getbinary(&rmx_lval(rm,i,0,0), sizeof(double)*rm->ncomp, |
173 |
rm->ncols, fp) != rm->ncols) |
174 |
return(0); |
175 |
if (rm->swapin) |
176 |
swap64((char *)&rmx_lval(rm,i,0,0), rm->ncols*rm->ncomp); |
177 |
} |
178 |
return(1); |
179 |
} |
180 |
|
181 |
static int |
182 |
rmx_load_rgbe(RMATRIX *rm, FILE *fp) |
183 |
{ |
184 |
COLOR *scan = (COLOR *)malloc(sizeof(COLOR)*rm->ncols); |
185 |
int i, j; |
186 |
|
187 |
if (!scan) |
188 |
return(0); |
189 |
for (i = 0; i < rm->nrows; i++) { |
190 |
if (freadscan(scan, rm->ncols, fp) < 0) { |
191 |
free(scan); |
192 |
return(0); |
193 |
} |
194 |
for (j = rm->ncols; j--; ) { |
195 |
rmx_lval(rm,i,j,0) = colval(scan[j],RED); |
196 |
rmx_lval(rm,i,j,1) = colval(scan[j],GRN); |
197 |
rmx_lval(rm,i,j,2) = colval(scan[j],BLU); |
198 |
} |
199 |
} |
200 |
free(scan); |
201 |
return(1); |
202 |
} |
203 |
|
204 |
/* Load matrix from supported file type */ |
205 |
RMATRIX * |
206 |
rmx_load(const char *inspec) |
207 |
{ |
208 |
FILE *fp = stdin; |
209 |
RMATRIX dinfo; |
210 |
RMATRIX *dnew; |
211 |
|
212 |
if (!inspec) { /* reading from stdin? */ |
213 |
inspec = "<stdin>"; |
214 |
SET_FILE_BINARY(stdin); |
215 |
} else if (inspec[0] == '!') { |
216 |
if (!(fp = popen(inspec+1, "r"))) |
217 |
return(NULL); |
218 |
SET_FILE_BINARY(fp); |
219 |
} else { |
220 |
const char *sp = inspec; /* check suffix */ |
221 |
while (*sp) |
222 |
++sp; |
223 |
while (sp > inspec && sp[-1] != '.') |
224 |
--sp; |
225 |
if (!strcasecmp(sp, "XML")) { /* assume it's a BSDF */ |
226 |
CMATRIX *cm = cm_loadBTDF((char *)inspec); |
227 |
if (!cm) |
228 |
return(NULL); |
229 |
dnew = rmx_from_cmatrix(cm); |
230 |
cm_free(cm); |
231 |
dnew->dtype = DTascii; |
232 |
return(dnew); |
233 |
} |
234 |
/* else open it ourselves */ |
235 |
if (!(fp = fopen(inspec, "rb"))) |
236 |
return(NULL); |
237 |
} |
238 |
#ifdef getc_unlocked |
239 |
flockfile(fp); |
240 |
#endif |
241 |
dinfo.nrows = dinfo.ncols = dinfo.ncomp = 0; |
242 |
dinfo.dtype = DTascii; /* assumed w/o FORMAT */ |
243 |
dinfo.swapin = 0; |
244 |
dinfo.info = NULL; |
245 |
dinfo.mtx[0] = dinfo.mtx[1] = dinfo.mtx[2] = 1.; |
246 |
if (getheader(fp, get_dminfo, &dinfo) < 0) { |
247 |
fclose(fp); |
248 |
return(NULL); |
249 |
} |
250 |
if ((dinfo.nrows <= 0) | (dinfo.ncols <= 0)) { |
251 |
if (!fscnresolu(&dinfo.ncols, &dinfo.nrows, fp)) { |
252 |
fclose(fp); |
253 |
return(NULL); |
254 |
} |
255 |
if (dinfo.ncomp <= 0) |
256 |
dinfo.ncomp = 3; |
257 |
else if ((dinfo.dtype == DTrgbe) | (dinfo.dtype == DTxyze) && |
258 |
dinfo.ncomp != 3) { |
259 |
fclose(fp); |
260 |
return(NULL); |
261 |
} |
262 |
} |
263 |
dnew = rmx_alloc(dinfo.nrows, dinfo.ncols, dinfo.ncomp); |
264 |
if (!dnew) { |
265 |
fclose(fp); |
266 |
return(NULL); |
267 |
} |
268 |
dnew->info = dinfo.info; |
269 |
switch (dinfo.dtype) { |
270 |
case DTascii: |
271 |
SET_FILE_TEXT(fp); |
272 |
if (!rmx_load_ascii(dnew, fp)) |
273 |
goto loaderr; |
274 |
dnew->dtype = DTascii; /* should leave double? */ |
275 |
break; |
276 |
case DTfloat: |
277 |
dnew->swapin = dinfo.swapin; |
278 |
if (!rmx_load_float(dnew, fp)) |
279 |
goto loaderr; |
280 |
dnew->dtype = DTfloat; |
281 |
break; |
282 |
case DTdouble: |
283 |
dnew->swapin = dinfo.swapin; |
284 |
if (!rmx_load_double(dnew, fp)) |
285 |
goto loaderr; |
286 |
dnew->dtype = DTdouble; |
287 |
break; |
288 |
case DTrgbe: |
289 |
case DTxyze: |
290 |
if (!rmx_load_rgbe(dnew, fp)) |
291 |
goto loaderr; |
292 |
dnew->dtype = dinfo.dtype; /* undo exposure? */ |
293 |
if ((dinfo.mtx[0] != 1.) | (dinfo.mtx[1] != 1.) | |
294 |
(dinfo.mtx[2] != 1.)) { |
295 |
dinfo.mtx[0] = 1./dinfo.mtx[0]; |
296 |
dinfo.mtx[1] = 1./dinfo.mtx[1]; |
297 |
dinfo.mtx[2] = 1./dinfo.mtx[2]; |
298 |
rmx_scale(dnew, dinfo.mtx); |
299 |
} |
300 |
break; |
301 |
default: |
302 |
goto loaderr; |
303 |
} |
304 |
if (fp != stdin) { |
305 |
if (inspec[0] == '!') |
306 |
pclose(fp); |
307 |
else |
308 |
fclose(fp); |
309 |
} |
310 |
#ifdef getc_unlocked |
311 |
else |
312 |
funlockfile(fp); |
313 |
#endif |
314 |
return(dnew); |
315 |
loaderr: /* should report error? */ |
316 |
if (inspec[0] == '!') |
317 |
pclose(fp); |
318 |
else |
319 |
fclose(fp); |
320 |
rmx_free(dnew); |
321 |
return(NULL); |
322 |
} |
323 |
|
324 |
static int |
325 |
rmx_write_ascii(const RMATRIX *rm, FILE *fp) |
326 |
{ |
327 |
const char *fmt = (rm->dtype == DTfloat) ? " %.7e" : |
328 |
(rm->dtype == DTrgbe) | (rm->dtype == DTxyze) ? " %.3e" : |
329 |
" %.15e" ; |
330 |
int i, j, k; |
331 |
|
332 |
for (i = 0; i < rm->nrows; i++) { |
333 |
for (j = 0; j < rm->ncols; j++) { |
334 |
for (k = 0; k < rm->ncomp; k++) |
335 |
fprintf(fp, fmt, rmx_lval(rm,i,j,k)); |
336 |
fputc('\t', fp); |
337 |
} |
338 |
fputc('\n', fp); |
339 |
} |
340 |
return(1); |
341 |
} |
342 |
|
343 |
static int |
344 |
rmx_write_float(const RMATRIX *rm, FILE *fp) |
345 |
{ |
346 |
int i, j, k; |
347 |
float val[100]; |
348 |
|
349 |
if (rm->ncomp > 100) { |
350 |
fputs("Unsupported # components in rmx_write_float()\n", stderr); |
351 |
exit(1); |
352 |
} |
353 |
for (i = 0; i < rm->nrows; i++) |
354 |
for (j = 0; j < rm->ncols; j++) { |
355 |
for (k = rm->ncomp; k--; ) |
356 |
val[k] = (float)rmx_lval(rm,i,j,k); |
357 |
if (putbinary(val, sizeof(val[0]), rm->ncomp, fp) != rm->ncomp) |
358 |
return(0); |
359 |
} |
360 |
return(1); |
361 |
} |
362 |
|
363 |
static int |
364 |
rmx_write_double(const RMATRIX *rm, FILE *fp) |
365 |
{ |
366 |
int i, j; |
367 |
|
368 |
for (i = 0; i < rm->nrows; i++) |
369 |
for (j = 0; j < rm->ncols; j++) |
370 |
if (putbinary(&rmx_lval(rm,i,j,0), sizeof(double), rm->ncomp, fp) != rm->ncomp) |
371 |
return(0); |
372 |
return(1); |
373 |
} |
374 |
|
375 |
static int |
376 |
rmx_write_rgbe(const RMATRIX *rm, FILE *fp) |
377 |
{ |
378 |
COLR *scan = (COLR *)malloc(sizeof(COLR)*rm->ncols); |
379 |
int i, j; |
380 |
|
381 |
if (!scan) |
382 |
return(0); |
383 |
for (i = 0; i < rm->nrows; i++) { |
384 |
for (j = rm->ncols; j--; ) |
385 |
setcolr(scan[j], rmx_lval(rm,i,j,0), |
386 |
rmx_lval(rm,i,j,1), |
387 |
rmx_lval(rm,i,j,2) ); |
388 |
if (fwritecolrs(scan, rm->ncols, fp) < 0) { |
389 |
free(scan); |
390 |
return(0); |
391 |
} |
392 |
} |
393 |
free(scan); |
394 |
return(1); |
395 |
} |
396 |
|
397 |
/* Write matrix to file type indicated by dtype */ |
398 |
int |
399 |
rmx_write(const RMATRIX *rm, int dtype, FILE *fp) |
400 |
{ |
401 |
RMATRIX *mydm = NULL; |
402 |
int ok = 1; |
403 |
|
404 |
if (!rm | !fp) |
405 |
return(0); |
406 |
#ifdef getc_unlocked |
407 |
flockfile(fp); |
408 |
#endif |
409 |
/* complete header */ |
410 |
if (rm->info) |
411 |
fputs(rm->info, fp); |
412 |
if (dtype == DTfromHeader) |
413 |
dtype = rm->dtype; |
414 |
else if ((dtype == DTrgbe) & (rm->dtype == DTxyze)) |
415 |
dtype = DTxyze; |
416 |
else if ((dtype == DTxyze) & (rm->dtype == DTrgbe)) |
417 |
dtype = DTrgbe; |
418 |
if ((dtype != DTrgbe) & (dtype != DTxyze)) { |
419 |
fprintf(fp, "NROWS=%d\n", rm->nrows); |
420 |
fprintf(fp, "NCOLS=%d\n", rm->ncols); |
421 |
fprintf(fp, "NCOMP=%d\n", rm->ncomp); |
422 |
} else if (rm->ncomp != 3) { /* wrong # components? */ |
423 |
double cmtx[3]; |
424 |
if (rm->ncomp != 1) /* only convert grayscale */ |
425 |
return(0); |
426 |
cmtx[0] = cmtx[1] = cmtx[2] = 1; |
427 |
mydm = rmx_transform(rm, 3, cmtx); |
428 |
if (!mydm) |
429 |
return(0); |
430 |
rm = mydm; |
431 |
} |
432 |
if ((dtype == DTfloat) | (dtype == DTdouble)) |
433 |
fputendian(fp); /* important to record */ |
434 |
fputformat((char *)cm_fmt_id[dtype], fp); |
435 |
fputc('\n', fp); |
436 |
switch (dtype) { /* write data */ |
437 |
case DTascii: |
438 |
ok = rmx_write_ascii(rm, fp); |
439 |
break; |
440 |
case DTfloat: |
441 |
ok = rmx_write_float(rm, fp); |
442 |
break; |
443 |
case DTdouble: |
444 |
ok = rmx_write_double(rm, fp); |
445 |
break; |
446 |
case DTrgbe: |
447 |
case DTxyze: |
448 |
fprtresolu(rm->ncols, rm->nrows, fp); |
449 |
ok = rmx_write_rgbe(rm, fp); |
450 |
break; |
451 |
default: |
452 |
return(0); |
453 |
} |
454 |
ok &= (fflush(fp) == 0); |
455 |
#ifdef getc_unlocked |
456 |
funlockfile(fp); |
457 |
#endif |
458 |
if (mydm) |
459 |
rmx_free(mydm); |
460 |
return(ok); |
461 |
} |
462 |
|
463 |
/* Allocate and assign square identity matrix with n components */ |
464 |
RMATRIX * |
465 |
rmx_identity(const int dim, const int n) |
466 |
{ |
467 |
RMATRIX *rid = rmx_alloc(dim, dim, n); |
468 |
int i, k; |
469 |
|
470 |
if (!rid) |
471 |
return(NULL); |
472 |
memset(rid->mtx, 0, sizeof(rid->mtx[0])*n*dim*dim); |
473 |
for (i = dim; i--; ) |
474 |
for (k = n; k--; ) |
475 |
rmx_lval(rid,i,i,k) = 1; |
476 |
return(rid); |
477 |
} |
478 |
|
479 |
/* Duplicate the given matrix */ |
480 |
RMATRIX * |
481 |
rmx_copy(const RMATRIX *rm) |
482 |
{ |
483 |
RMATRIX *dnew; |
484 |
|
485 |
if (!rm) |
486 |
return(NULL); |
487 |
dnew = rmx_alloc(rm->nrows, rm->ncols, rm->ncomp); |
488 |
if (!dnew) |
489 |
return(NULL); |
490 |
rmx_addinfo(dnew, rm->info); |
491 |
dnew->dtype = rm->dtype; |
492 |
memcpy(dnew->mtx, rm->mtx, |
493 |
sizeof(rm->mtx[0])*rm->ncomp*rm->nrows*rm->ncols); |
494 |
return(dnew); |
495 |
} |
496 |
|
497 |
/* Allocate and assign transposed matrix */ |
498 |
RMATRIX * |
499 |
rmx_transpose(const RMATRIX *rm) |
500 |
{ |
501 |
RMATRIX *dnew; |
502 |
int i, j, k; |
503 |
|
504 |
if (!rm) |
505 |
return(0); |
506 |
if ((rm->nrows == 1) | (rm->ncols == 1)) { |
507 |
dnew = rmx_copy(rm); |
508 |
if (!dnew) |
509 |
return(NULL); |
510 |
dnew->nrows = rm->ncols; |
511 |
dnew->ncols = rm->nrows; |
512 |
return(dnew); |
513 |
} |
514 |
dnew = rmx_alloc(rm->ncols, rm->nrows, rm->ncomp); |
515 |
if (!dnew) |
516 |
return(NULL); |
517 |
if (rm->info) { |
518 |
rmx_addinfo(dnew, rm->info); |
519 |
rmx_addinfo(dnew, "Transposed rows and columns\n"); |
520 |
} |
521 |
dnew->dtype = rm->dtype; |
522 |
for (i = dnew->nrows; i--; ) |
523 |
for (j = dnew->ncols; j--; ) |
524 |
for (k = dnew->ncomp; k--; ) |
525 |
rmx_lval(dnew,i,j,k) = rmx_lval(rm,j,i,k); |
526 |
return(dnew); |
527 |
} |
528 |
|
529 |
/* Multiply (concatenate) two matrices and allocate the result */ |
530 |
RMATRIX * |
531 |
rmx_multiply(const RMATRIX *m1, const RMATRIX *m2) |
532 |
{ |
533 |
RMATRIX *mres; |
534 |
int i, j, k, h; |
535 |
|
536 |
if (!m1 | !m2 || (m1->ncomp != m2->ncomp) | (m1->ncols != m2->nrows)) |
537 |
return(NULL); |
538 |
mres = rmx_alloc(m1->nrows, m2->ncols, m1->ncomp); |
539 |
if (!mres) |
540 |
return(NULL); |
541 |
i = rmx_newtype(m1->dtype, m2->dtype); |
542 |
if (i) |
543 |
mres->dtype = i; |
544 |
else |
545 |
rmx_addinfo(mres, rmx_mismatch_warn); |
546 |
for (i = mres->nrows; i--; ) |
547 |
for (j = mres->ncols; j--; ) |
548 |
for (k = mres->ncomp; k--; ) { |
549 |
long double d = 0; |
550 |
for (h = m1->ncols; h--; ) |
551 |
d += rmx_lval(m1,i,h,k) * rmx_lval(m2,h,j,k); |
552 |
rmx_lval(mres,i,j,k) = (double)d; |
553 |
} |
554 |
return(mres); |
555 |
} |
556 |
|
557 |
/* Element-wise multiplication (or division) of m2 into m1 */ |
558 |
int |
559 |
rmx_elemult(RMATRIX *m1, const RMATRIX *m2, int divide) |
560 |
{ |
561 |
int zeroDivides = 0; |
562 |
int i, j, k; |
563 |
|
564 |
if (!m1 | !m2 || (m1->ncols != m2->ncols) | (m1->nrows != m2->nrows)) |
565 |
return(0); |
566 |
if ((m2->ncomp > 1) & (m2->ncomp != m1->ncomp)) |
567 |
return(0); |
568 |
i = rmx_newtype(m1->dtype, m2->dtype); |
569 |
if (i) |
570 |
m1->dtype = i; |
571 |
else |
572 |
rmx_addinfo(m1, rmx_mismatch_warn); |
573 |
for (i = m1->nrows; i--; ) |
574 |
for (j = m1->ncols; j--; ) |
575 |
if (divide) { |
576 |
double d; |
577 |
if (m2->ncomp == 1) { |
578 |
d = rmx_lval(m2,i,j,0); |
579 |
if (d == 0) { |
580 |
++zeroDivides; |
581 |
for (k = m1->ncomp; k--; ) |
582 |
rmx_lval(m1,i,j,k) = 0; |
583 |
} else { |
584 |
d = 1./d; |
585 |
for (k = m1->ncomp; k--; ) |
586 |
rmx_lval(m1,i,j,k) *= d; |
587 |
} |
588 |
} else |
589 |
for (k = m1->ncomp; k--; ) { |
590 |
d = rmx_lval(m2,i,j,k); |
591 |
if (d == 0) { |
592 |
++zeroDivides; |
593 |
rmx_lval(m1,i,j,k) = 0; |
594 |
} else |
595 |
rmx_lval(m1,i,j,k) /= d; |
596 |
} |
597 |
} else { |
598 |
if (m2->ncomp == 1) { |
599 |
const double d = rmx_lval(m2,i,j,0); |
600 |
for (k = m1->ncomp; k--; ) |
601 |
rmx_lval(m1,i,j,k) *= d; |
602 |
} else |
603 |
for (k = m1->ncomp; k--; ) |
604 |
rmx_lval(m1,i,j,k) *= rmx_lval(m2,i,j,k); |
605 |
} |
606 |
if (zeroDivides) { |
607 |
rmx_addinfo(m1, "WARNING: zero divide(s) corrupted results\n"); |
608 |
errno = ERANGE; |
609 |
} |
610 |
return(1); |
611 |
} |
612 |
|
613 |
/* Sum second matrix into first, applying scale factor beforehand */ |
614 |
int |
615 |
rmx_sum(RMATRIX *msum, const RMATRIX *madd, const double sf[]) |
616 |
{ |
617 |
double *mysf = NULL; |
618 |
int i, j, k; |
619 |
|
620 |
if (!msum | !madd || |
621 |
(msum->nrows != madd->nrows) | |
622 |
(msum->ncols != madd->ncols) | |
623 |
(msum->ncomp != madd->ncomp)) |
624 |
return(0); |
625 |
if (!sf) { |
626 |
mysf = (double *)malloc(sizeof(double)*msum->ncomp); |
627 |
if (!mysf) |
628 |
return(0); |
629 |
for (k = msum->ncomp; k--; ) |
630 |
mysf[k] = 1; |
631 |
sf = mysf; |
632 |
} |
633 |
i = rmx_newtype(msum->dtype, madd->dtype); |
634 |
if (i) |
635 |
msum->dtype = i; |
636 |
else |
637 |
rmx_addinfo(msum, rmx_mismatch_warn); |
638 |
for (i = msum->nrows; i--; ) |
639 |
for (j = msum->ncols; j--; ) |
640 |
for (k = msum->ncomp; k--; ) |
641 |
rmx_lval(msum,i,j,k) += sf[k] * rmx_lval(madd,i,j,k); |
642 |
if (mysf) |
643 |
free(mysf); |
644 |
return(1); |
645 |
} |
646 |
|
647 |
/* Scale the given matrix by the indicated scalar component vector */ |
648 |
int |
649 |
rmx_scale(RMATRIX *rm, const double sf[]) |
650 |
{ |
651 |
int i, j, k; |
652 |
|
653 |
if (!rm | !sf) |
654 |
return(0); |
655 |
for (i = rm->nrows; i--; ) |
656 |
for (j = rm->ncols; j--; ) |
657 |
for (k = rm->ncomp; k--; ) |
658 |
rmx_lval(rm,i,j,k) *= sf[k]; |
659 |
|
660 |
if (rm->info) |
661 |
rmx_addinfo(rm, "Applied scalar\n"); |
662 |
return(1); |
663 |
} |
664 |
|
665 |
/* Allocate new matrix and apply component transformation */ |
666 |
RMATRIX * |
667 |
rmx_transform(const RMATRIX *msrc, int n, const double cmat[]) |
668 |
{ |
669 |
int i, j, ks, kd; |
670 |
RMATRIX *dnew; |
671 |
|
672 |
if (!msrc | (n <= 0) | !cmat) |
673 |
return(NULL); |
674 |
dnew = rmx_alloc(msrc->nrows, msrc->ncols, n); |
675 |
if (!dnew) |
676 |
return(NULL); |
677 |
if (msrc->info) { |
678 |
char buf[128]; |
679 |
sprintf(buf, "Applied %dx%d component transform\n", |
680 |
dnew->ncomp, msrc->ncomp); |
681 |
rmx_addinfo(dnew, msrc->info); |
682 |
rmx_addinfo(dnew, buf); |
683 |
} |
684 |
dnew->dtype = msrc->dtype; |
685 |
for (i = dnew->nrows; i--; ) |
686 |
for (j = dnew->ncols; j--; ) |
687 |
for (kd = dnew->ncomp; kd--; ) { |
688 |
double d = 0; |
689 |
for (ks = msrc->ncomp; ks--; ) |
690 |
d += cmat[kd*msrc->ncomp + ks] * rmx_lval(msrc,i,j,ks); |
691 |
rmx_lval(dnew,i,j,kd) = d; |
692 |
} |
693 |
return(dnew); |
694 |
} |
695 |
|
696 |
/* Convert a color matrix to newly allocated RMATRIX buffer */ |
697 |
RMATRIX * |
698 |
rmx_from_cmatrix(const CMATRIX *cm) |
699 |
{ |
700 |
int i, j; |
701 |
RMATRIX *dnew; |
702 |
|
703 |
if (!cm) |
704 |
return(NULL); |
705 |
dnew = rmx_alloc(cm->nrows, cm->ncols, 3); |
706 |
if (!dnew) |
707 |
return(NULL); |
708 |
dnew->dtype = DTfloat; |
709 |
for (i = dnew->nrows; i--; ) |
710 |
for (j = dnew->ncols; j--; ) { |
711 |
const COLORV *cv = cm_lval(cm,i,j); |
712 |
rmx_lval(dnew,i,j,0) = cv[0]; |
713 |
rmx_lval(dnew,i,j,1) = cv[1]; |
714 |
rmx_lval(dnew,i,j,2) = cv[2]; |
715 |
} |
716 |
return(dnew); |
717 |
} |
718 |
|
719 |
/* Convert general matrix to newly allocated CMATRIX buffer */ |
720 |
CMATRIX * |
721 |
cm_from_rmatrix(const RMATRIX *rm) |
722 |
{ |
723 |
int i, j; |
724 |
CMATRIX *cnew; |
725 |
|
726 |
if (!rm || rm->ncomp != 3) |
727 |
return(NULL); |
728 |
cnew = cm_alloc(rm->nrows, rm->ncols); |
729 |
if (!cnew) |
730 |
return(NULL); |
731 |
for (i = cnew->nrows; i--; ) |
732 |
for (j = cnew->ncols; j--; ) { |
733 |
COLORV *cv = cm_lval(cnew,i,j); |
734 |
cv[0] = (COLORV)rmx_lval(rm,i,j,0); |
735 |
cv[1] = (COLORV)rmx_lval(rm,i,j,1); |
736 |
cv[2] = (COLORV)rmx_lval(rm,i,j,2); |
737 |
} |
738 |
return(cnew); |
739 |
} |