1 |
greg |
2.1 |
#ifndef lint |
2 |
greg |
2.9 |
static const char RCSid[] = "$Id: rmatrix.c,v 2.8 2014/08/27 13:33:47 greg Exp $"; |
3 |
greg |
2.1 |
#endif |
4 |
|
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/* |
5 |
|
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* General matrix operations. |
6 |
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*/ |
7 |
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8 |
|
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#include <stdio.h> |
9 |
|
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#include <stdlib.h> |
10 |
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#include <string.h> |
11 |
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#include <fcntl.h> |
12 |
|
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#include "resolu.h" |
13 |
|
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#include "rmatrix.h" |
14 |
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|
15 |
greg |
2.6 |
static char rmx_mismatch_warn[] = "WARNING: data type mismatch\n"; |
16 |
greg |
2.1 |
|
17 |
|
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/* Allocate a nr x nc matrix with n components */ |
18 |
|
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RMATRIX * |
19 |
|
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rmx_alloc(int nr, int nc, int n) |
20 |
|
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{ |
21 |
|
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RMATRIX *dnew; |
22 |
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|
23 |
|
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if ((nr <= 0) | (nc <= 0) | (n <= 0)) |
24 |
|
|
return(NULL); |
25 |
|
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dnew = (RMATRIX *)malloc(sizeof(RMATRIX)-sizeof(dnew->mtx) + |
26 |
|
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sizeof(dnew->mtx[0])*(n*nr*nc)); |
27 |
|
|
if (dnew == NULL) |
28 |
|
|
return(NULL); |
29 |
|
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dnew->nrows = nr; dnew->ncols = nc; dnew->ncomp = n; |
30 |
greg |
2.6 |
dnew->dtype = DTdouble; |
31 |
greg |
2.5 |
dnew->info = NULL; |
32 |
greg |
2.1 |
return(dnew); |
33 |
|
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} |
34 |
|
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|
35 |
greg |
2.6 |
/* Free a RMATRIX array */ |
36 |
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void |
37 |
|
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rmx_free(RMATRIX *rm) |
38 |
|
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{ |
39 |
|
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if (!rm) return; |
40 |
|
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if (rm->info) |
41 |
|
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free(rm->info); |
42 |
|
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free(rm); |
43 |
|
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} |
44 |
|
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|
45 |
|
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/* Resolve data type based on two input types (returns 0 for mismatch) */ |
46 |
|
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int |
47 |
|
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rmx_newtype(int dtyp1, int dtyp2) |
48 |
|
|
{ |
49 |
|
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if ((dtyp1==DTxyze) | (dtyp1==DTrgbe) && dtyp1 != dtyp2) |
50 |
|
|
return(0); |
51 |
|
|
if (dtyp1 < dtyp2) |
52 |
|
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return(dtyp1); |
53 |
|
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return(dtyp2); |
54 |
|
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} |
55 |
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|
56 |
greg |
2.5 |
/* Append header information associated with matrix data */ |
57 |
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int |
58 |
|
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rmx_addinfo(RMATRIX *rm, const char *info) |
59 |
|
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{ |
60 |
|
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if (!info || !*info) |
61 |
|
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return(0); |
62 |
greg |
2.8 |
if (!rm->info) { |
63 |
greg |
2.5 |
rm->info = (char *)malloc(strlen(info)+1); |
64 |
greg |
2.8 |
if (rm->info) rm->info[0] = '\0'; |
65 |
|
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} else |
66 |
greg |
2.5 |
rm->info = (char *)realloc(rm->info, |
67 |
|
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strlen(rm->info)+strlen(info)+1); |
68 |
|
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if (!rm->info) |
69 |
|
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return(0); |
70 |
|
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strcat(rm->info, info); |
71 |
|
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return(1); |
72 |
|
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} |
73 |
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|
74 |
greg |
2.1 |
static int |
75 |
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get_dminfo(char *s, void *p) |
76 |
|
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{ |
77 |
greg |
2.6 |
RMATRIX *ip = (RMATRIX *)p; |
78 |
greg |
2.5 |
char fmt[64]; |
79 |
greg |
2.1 |
int i; |
80 |
|
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|
81 |
greg |
2.6 |
if (headidval(fmt, s)) |
82 |
|
|
return(0); |
83 |
greg |
2.1 |
if (!strncmp(s, "NCOMP=", 6)) { |
84 |
|
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ip->ncomp = atoi(s+6); |
85 |
|
|
return(0); |
86 |
|
|
} |
87 |
|
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if (!strncmp(s, "NROWS=", 6)) { |
88 |
|
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ip->nrows = atoi(s+6); |
89 |
|
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return(0); |
90 |
|
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} |
91 |
|
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if (!strncmp(s, "NCOLS=", 6)) { |
92 |
|
|
ip->ncols = atoi(s+6); |
93 |
|
|
return(0); |
94 |
|
|
} |
95 |
greg |
2.5 |
if (!formatval(fmt, s)) { |
96 |
greg |
2.6 |
rmx_addinfo(ip, s); |
97 |
greg |
2.1 |
return(0); |
98 |
greg |
2.5 |
} |
99 |
greg |
2.1 |
for (i = 1; i < DTend; i++) |
100 |
|
|
if (!strcmp(fmt, cm_fmt_id[i])) { |
101 |
|
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ip->dtype = i; |
102 |
|
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return(0); |
103 |
|
|
} |
104 |
|
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return(-1); |
105 |
|
|
} |
106 |
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|
107 |
|
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static int |
108 |
|
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rmx_load_ascii(RMATRIX *rm, FILE *fp) |
109 |
|
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{ |
110 |
|
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int i, j, k; |
111 |
|
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#ifdef _WIN32 |
112 |
|
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_setmode(fileno(fp), _O_TEXT); |
113 |
|
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#endif |
114 |
|
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for (i = 0; i < rm->nrows; i++) |
115 |
|
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for (j = 0; j < rm->ncols; j++) |
116 |
|
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for (k = 0; k < rm->ncomp; k++) |
117 |
|
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if (fscanf(fp, "%lf", &rmx_lval(rm,i,j,k)) != 1) |
118 |
|
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return(0); |
119 |
|
|
return(1); |
120 |
|
|
} |
121 |
|
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|
122 |
|
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static int |
123 |
|
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rmx_load_float(RMATRIX *rm, FILE *fp) |
124 |
|
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{ |
125 |
|
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int i, j, k; |
126 |
|
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float val[100]; |
127 |
|
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|
128 |
|
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if (rm->ncomp > 100) { |
129 |
|
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fputs("Unsupported # components in rmx_load_float()\n", stderr); |
130 |
|
|
exit(1); |
131 |
|
|
} |
132 |
|
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for (i = 0; i < rm->nrows; i++) |
133 |
|
|
for (j = 0; j < rm->ncols; j++) { |
134 |
|
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if (fread(val, sizeof(val[0]), rm->ncomp, fp) != rm->ncomp) |
135 |
|
|
return(0); |
136 |
|
|
for (k = rm->ncomp; k--; ) |
137 |
|
|
rmx_lval(rm,i,j,k) = val[k]; |
138 |
|
|
} |
139 |
|
|
return(1); |
140 |
|
|
} |
141 |
|
|
|
142 |
|
|
static int |
143 |
|
|
rmx_load_double(RMATRIX *rm, FILE *fp) |
144 |
|
|
{ |
145 |
|
|
int i, j, k; |
146 |
|
|
double val[100]; |
147 |
|
|
|
148 |
|
|
if (rm->ncomp > 100) { |
149 |
|
|
fputs("Unsupported # components in rmx_load_double()\n", stderr); |
150 |
|
|
exit(1); |
151 |
|
|
} |
152 |
|
|
for (i = 0; i < rm->nrows; i++) |
153 |
|
|
for (j = 0; j < rm->ncols; j++) { |
154 |
|
|
if (fread(val, sizeof(val[0]), rm->ncomp, fp) != rm->ncomp) |
155 |
|
|
return(0); |
156 |
|
|
for (k = rm->ncomp; k--; ) |
157 |
|
|
rmx_lval(rm,i,j,k) = val[k]; |
158 |
|
|
} |
159 |
|
|
return(1); |
160 |
|
|
} |
161 |
|
|
|
162 |
|
|
static int |
163 |
|
|
rmx_load_rgbe(RMATRIX *rm, FILE *fp) |
164 |
|
|
{ |
165 |
|
|
COLOR *scan = (COLOR *)malloc(sizeof(COLOR)*rm->ncols); |
166 |
|
|
int i, j; |
167 |
|
|
|
168 |
|
|
if (scan == NULL) |
169 |
|
|
return(0); |
170 |
|
|
for (i = 0; i < rm->nrows; i++) { |
171 |
|
|
if (freadscan(scan, rm->ncols, fp) < 0) { |
172 |
|
|
free(scan); |
173 |
|
|
return(0); |
174 |
|
|
} |
175 |
|
|
for (j = rm->ncols; j--; ) { |
176 |
|
|
rmx_lval(rm,i,j,0) = colval(scan[j],RED); |
177 |
|
|
rmx_lval(rm,i,j,1) = colval(scan[j],GRN); |
178 |
|
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rmx_lval(rm,i,j,2) = colval(scan[j],BLU); |
179 |
|
|
} |
180 |
|
|
} |
181 |
|
|
free(scan); |
182 |
|
|
return(1); |
183 |
|
|
} |
184 |
|
|
|
185 |
|
|
/* Load matrix from supported file type */ |
186 |
|
|
RMATRIX * |
187 |
|
|
rmx_load(const char *fname) |
188 |
|
|
{ |
189 |
|
|
FILE *fp = stdin; |
190 |
greg |
2.6 |
RMATRIX dinfo; |
191 |
greg |
2.1 |
RMATRIX *dnew; |
192 |
|
|
|
193 |
|
|
if (fname == NULL) { /* reading from stdin? */ |
194 |
|
|
fname = "<stdin>"; |
195 |
greg |
2.7 |
#ifdef _WIN32 |
196 |
|
|
_setmode(fileno(stdin), _O_BINARY); |
197 |
|
|
#endif |
198 |
greg |
2.1 |
} else { |
199 |
|
|
const char *sp = fname; /* check suffix */ |
200 |
|
|
while (*sp) |
201 |
|
|
++sp; |
202 |
|
|
while (sp > fname && sp[-1] != '.') |
203 |
|
|
--sp; |
204 |
|
|
if (!strcasecmp(sp, "XML")) { /* assume it's a BSDF */ |
205 |
|
|
CMATRIX *cm = cm_loadBTDF((char *)fname); |
206 |
|
|
if (cm == NULL) |
207 |
|
|
return(NULL); |
208 |
|
|
dnew = rmx_from_cmatrix(cm); |
209 |
|
|
cm_free(cm); |
210 |
|
|
return(dnew); |
211 |
|
|
} |
212 |
|
|
/* else open it ourselves */ |
213 |
|
|
if ((fp = fopen(fname, "rb")) == NULL) |
214 |
|
|
return(NULL); |
215 |
|
|
} |
216 |
|
|
#ifdef getc_unlocked |
217 |
|
|
flockfile(fp); |
218 |
|
|
#endif |
219 |
|
|
dinfo.nrows = dinfo.ncols = dinfo.ncomp = 0; |
220 |
greg |
2.6 |
dinfo.dtype = DTascii; /* assumed w/o FORMAT */ |
221 |
|
|
dinfo.info = NULL; |
222 |
greg |
2.3 |
if (getheader(fp, get_dminfo, &dinfo) < 0) { |
223 |
greg |
2.1 |
fclose(fp); |
224 |
|
|
return(NULL); |
225 |
|
|
} |
226 |
greg |
2.4 |
if ((dinfo.nrows <= 0) | (dinfo.ncols <= 0)) { |
227 |
greg |
2.1 |
if (!fscnresolu(&dinfo.ncols, &dinfo.nrows, fp)) { |
228 |
|
|
fclose(fp); |
229 |
|
|
return(NULL); |
230 |
|
|
} |
231 |
greg |
2.4 |
if (dinfo.ncomp <= 0) |
232 |
|
|
dinfo.ncomp = 3; |
233 |
|
|
else if ((dinfo.dtype == DTrgbe) | (dinfo.dtype == DTxyze) && |
234 |
|
|
dinfo.ncomp != 3) { |
235 |
|
|
fclose(fp); |
236 |
|
|
return(NULL); |
237 |
|
|
} |
238 |
greg |
2.1 |
} |
239 |
|
|
dnew = rmx_alloc(dinfo.nrows, dinfo.ncols, dinfo.ncomp); |
240 |
|
|
if (dnew == NULL) { |
241 |
|
|
fclose(fp); |
242 |
|
|
return(NULL); |
243 |
|
|
} |
244 |
greg |
2.6 |
dnew->info = dinfo.info; |
245 |
greg |
2.1 |
switch (dinfo.dtype) { |
246 |
|
|
case DTascii: |
247 |
|
|
if (!rmx_load_ascii(dnew, fp)) |
248 |
|
|
goto loaderr; |
249 |
|
|
break; |
250 |
|
|
case DTfloat: |
251 |
|
|
if (!rmx_load_float(dnew, fp)) |
252 |
|
|
goto loaderr; |
253 |
greg |
2.6 |
dnew->dtype = DTfloat; |
254 |
greg |
2.1 |
break; |
255 |
|
|
case DTdouble: |
256 |
|
|
if (!rmx_load_double(dnew, fp)) |
257 |
|
|
goto loaderr; |
258 |
greg |
2.6 |
dnew->dtype = DTdouble; |
259 |
greg |
2.1 |
break; |
260 |
|
|
case DTrgbe: |
261 |
|
|
case DTxyze: |
262 |
|
|
if (!rmx_load_rgbe(dnew, fp)) |
263 |
|
|
goto loaderr; |
264 |
greg |
2.6 |
dnew->dtype = dinfo.dtype; |
265 |
greg |
2.1 |
break; |
266 |
|
|
default: |
267 |
|
|
goto loaderr; |
268 |
|
|
} |
269 |
|
|
if (fp != stdin) |
270 |
|
|
fclose(fp); |
271 |
|
|
return(dnew); |
272 |
|
|
loaderr: /* should report error? */ |
273 |
|
|
fclose(fp); |
274 |
|
|
rmx_free(dnew); |
275 |
|
|
return(NULL); |
276 |
|
|
} |
277 |
|
|
|
278 |
|
|
static int |
279 |
|
|
rmx_write_ascii(const RMATRIX *rm, FILE *fp) |
280 |
|
|
{ |
281 |
|
|
int i, j, k; |
282 |
|
|
#ifdef _WIN32 |
283 |
|
|
_setmode(fileno(fp), _O_TEXT); |
284 |
|
|
#endif |
285 |
|
|
for (i = 0; i < rm->nrows; i++) { |
286 |
|
|
for (j = 0; j < rm->ncols; j++) { |
287 |
|
|
for (k = 0; k < rm->ncomp; k++) |
288 |
|
|
fprintf(fp, " %.15e", rmx_lval(rm,i,j,k)); |
289 |
|
|
fputc('\t', fp); |
290 |
|
|
} |
291 |
|
|
fputc('\n', fp); |
292 |
|
|
} |
293 |
|
|
return(1); |
294 |
|
|
} |
295 |
|
|
|
296 |
|
|
static int |
297 |
|
|
rmx_write_float(const RMATRIX *rm, FILE *fp) |
298 |
|
|
{ |
299 |
|
|
int i, j, k; |
300 |
|
|
float val[100]; |
301 |
|
|
|
302 |
|
|
if (rm->ncomp > 100) { |
303 |
|
|
fputs("Unsupported # components in rmx_write_float()\n", stderr); |
304 |
|
|
exit(1); |
305 |
|
|
} |
306 |
|
|
for (i = 0; i < rm->nrows; i++) |
307 |
|
|
for (j = 0; j < rm->ncols; j++) { |
308 |
|
|
for (k = rm->ncomp; k--; ) |
309 |
|
|
val[k] = (float)rmx_lval(rm,i,j,k); |
310 |
|
|
if (fwrite(val, sizeof(val[0]), rm->ncomp, fp) != rm->ncomp) |
311 |
|
|
return(0); |
312 |
|
|
} |
313 |
|
|
return(1); |
314 |
|
|
} |
315 |
|
|
|
316 |
|
|
static int |
317 |
|
|
rmx_write_double(const RMATRIX *rm, FILE *fp) |
318 |
|
|
{ |
319 |
|
|
int i, j, k; |
320 |
|
|
double val[100]; |
321 |
|
|
|
322 |
|
|
if (rm->ncomp > 100) { |
323 |
|
|
fputs("Unsupported # components in rmx_write_double()\n", stderr); |
324 |
|
|
exit(1); |
325 |
|
|
} |
326 |
|
|
for (i = 0; i < rm->nrows; i++) |
327 |
|
|
for (j = 0; j < rm->ncols; j++) { |
328 |
|
|
for (k = rm->ncomp; k--; ) |
329 |
|
|
val[k] = rmx_lval(rm,i,j,k); |
330 |
|
|
if (fwrite(val, sizeof(val[0]), rm->ncomp, fp) != rm->ncomp) |
331 |
|
|
return(0); |
332 |
|
|
} |
333 |
|
|
return(1); |
334 |
|
|
} |
335 |
|
|
|
336 |
|
|
static int |
337 |
|
|
rmx_write_rgbe(const RMATRIX *rm, FILE *fp) |
338 |
|
|
{ |
339 |
|
|
COLOR *scan = (COLOR *)malloc(sizeof(COLOR)*rm->ncols); |
340 |
|
|
int i, j; |
341 |
|
|
|
342 |
|
|
if (scan == NULL) |
343 |
|
|
return(0); |
344 |
|
|
for (i = 0; i < rm->nrows; i++) { |
345 |
|
|
for (j = rm->ncols; j--; ) |
346 |
|
|
setcolor(scan[j], rmx_lval(rm,i,j,0), |
347 |
|
|
rmx_lval(rm,i,j,1), |
348 |
|
|
rmx_lval(rm,i,j,2) ); |
349 |
|
|
if (fwritescan(scan, rm->ncols, fp) < 0) { |
350 |
|
|
free(scan); |
351 |
|
|
return(0); |
352 |
|
|
} |
353 |
|
|
} |
354 |
|
|
free(scan); |
355 |
|
|
return(1); |
356 |
|
|
} |
357 |
|
|
|
358 |
greg |
2.6 |
/* Write matrix to file type indicated by dtype */ |
359 |
greg |
2.1 |
long |
360 |
|
|
rmx_write(const RMATRIX *rm, int dtype, FILE *fp) |
361 |
|
|
{ |
362 |
|
|
RMATRIX *mydm = NULL; |
363 |
|
|
int ok = 1; |
364 |
|
|
|
365 |
|
|
if ((rm == NULL) | (fp == NULL)) |
366 |
|
|
return(0); |
367 |
|
|
/* complete header */ |
368 |
greg |
2.5 |
if (rm->info) |
369 |
|
|
fputs(rm->info, fp); |
370 |
greg |
2.6 |
if (dtype == DTfromHeader) |
371 |
|
|
dtype = rm->dtype; |
372 |
|
|
else if ((dtype == DTrgbe) & (rm->dtype == DTxyze)) |
373 |
|
|
dtype = DTxyze; |
374 |
greg |
2.9 |
else if ((dtype == DTxyze) & (rm->dtype == DTrgbe)) |
375 |
greg |
2.6 |
dtype = DTrgbe; |
376 |
greg |
2.1 |
if ((dtype != DTrgbe) & (dtype != DTxyze)) { |
377 |
|
|
fprintf(fp, "NROWS=%d\n", rm->nrows); |
378 |
|
|
fprintf(fp, "NCOLS=%d\n", rm->ncols); |
379 |
|
|
fprintf(fp, "NCOMP=%d\n", rm->ncomp); |
380 |
|
|
} else if (rm->ncomp != 3) { /* wrong # components? */ |
381 |
|
|
double cmtx[3]; |
382 |
|
|
if (rm->ncomp != 1) /* only convert grayscale */ |
383 |
|
|
return(0); |
384 |
|
|
cmtx[0] = cmtx[1] = cmtx[2] = 1; |
385 |
|
|
mydm = rmx_transform(rm, 3, cmtx); |
386 |
|
|
if (mydm == NULL) |
387 |
|
|
return(0); |
388 |
|
|
rm = mydm; |
389 |
|
|
} |
390 |
|
|
fputformat((char *)cm_fmt_id[dtype], fp); |
391 |
|
|
fputc('\n', fp); |
392 |
|
|
switch (dtype) { /* write data */ |
393 |
|
|
case DTascii: |
394 |
|
|
ok = rmx_write_ascii(rm, fp); |
395 |
|
|
break; |
396 |
|
|
case DTfloat: |
397 |
|
|
ok = rmx_write_float(rm, fp); |
398 |
|
|
break; |
399 |
|
|
case DTdouble: |
400 |
|
|
ok = rmx_write_double(rm, fp); |
401 |
|
|
break; |
402 |
|
|
case DTrgbe: |
403 |
|
|
case DTxyze: |
404 |
|
|
fprtresolu(rm->ncols, rm->nrows, fp); |
405 |
|
|
ok = rmx_write_rgbe(rm, fp); |
406 |
|
|
break; |
407 |
|
|
default: |
408 |
|
|
return(0); |
409 |
|
|
} |
410 |
|
|
ok &= (fflush(fp) == 0); |
411 |
|
|
rmx_free(mydm); |
412 |
|
|
return(ftell(fp) * ok); /* return # bytes written */ |
413 |
|
|
} |
414 |
|
|
|
415 |
|
|
/* Allocate and assign square identity matrix with n components */ |
416 |
|
|
RMATRIX * |
417 |
|
|
rmx_identity(const int dim, const int n) |
418 |
|
|
{ |
419 |
|
|
RMATRIX *rid = rmx_alloc(dim, dim, n); |
420 |
|
|
int i; |
421 |
|
|
|
422 |
|
|
if (rid == NULL) |
423 |
|
|
return(NULL); |
424 |
|
|
memset(rid->mtx, 0, sizeof(rid->mtx[0])*dim*dim); |
425 |
|
|
for (i = dim; i--; ) |
426 |
|
|
rmx_lval(rid,i,i,0) = 1; |
427 |
|
|
for (i = n; --i; ) |
428 |
|
|
memcpy(rid->mtx+i*(dim*dim), rid->mtx, |
429 |
|
|
sizeof(rid->mtx[0])*dim*dim); |
430 |
|
|
return(rid); |
431 |
|
|
} |
432 |
|
|
|
433 |
|
|
/* Duplicate the given matrix */ |
434 |
|
|
RMATRIX * |
435 |
|
|
rmx_copy(const RMATRIX *rm) |
436 |
|
|
{ |
437 |
|
|
RMATRIX *dnew; |
438 |
|
|
|
439 |
|
|
if (rm == NULL) |
440 |
|
|
return(NULL); |
441 |
|
|
dnew = rmx_alloc(rm->nrows, rm->ncols, rm->ncomp); |
442 |
|
|
if (dnew == NULL) |
443 |
|
|
return(NULL); |
444 |
greg |
2.5 |
rmx_addinfo(dnew, rm->info); |
445 |
greg |
2.6 |
dnew->dtype = rm->dtype; |
446 |
greg |
2.1 |
memcpy(dnew->mtx, rm->mtx, |
447 |
|
|
sizeof(rm->mtx[0])*rm->ncomp*rm->nrows*rm->ncols); |
448 |
|
|
return(dnew); |
449 |
|
|
} |
450 |
|
|
|
451 |
greg |
2.2 |
/* Allocate and assign transposed matrix */ |
452 |
|
|
RMATRIX * |
453 |
|
|
rmx_transpose(const RMATRIX *rm) |
454 |
greg |
2.1 |
{ |
455 |
greg |
2.2 |
RMATRIX *dnew; |
456 |
greg |
2.1 |
int i, j, k; |
457 |
|
|
|
458 |
|
|
if (rm == NULL) |
459 |
|
|
return(0); |
460 |
greg |
2.2 |
dnew = rmx_alloc(rm->ncols, rm->nrows, rm->ncomp); |
461 |
|
|
if (dnew == NULL) |
462 |
|
|
return(NULL); |
463 |
greg |
2.5 |
if (rm->info) { |
464 |
|
|
rmx_addinfo(dnew, rm->info); |
465 |
|
|
rmx_addinfo(dnew, "Transposed rows and columns\n"); |
466 |
|
|
} |
467 |
greg |
2.6 |
dnew->dtype = rm->dtype; |
468 |
greg |
2.2 |
for (i = dnew->nrows; i--; ) |
469 |
|
|
for (j = dnew->ncols; j--; ) |
470 |
|
|
for (k = dnew->ncomp; k--; ) |
471 |
|
|
rmx_lval(dnew,i,j,k) = rmx_lval(rm,j,i,k); |
472 |
|
|
return(dnew); |
473 |
greg |
2.1 |
} |
474 |
|
|
|
475 |
|
|
/* Multiply (concatenate) two matrices and allocate the result */ |
476 |
|
|
RMATRIX * |
477 |
|
|
rmx_multiply(const RMATRIX *m1, const RMATRIX *m2) |
478 |
|
|
{ |
479 |
|
|
RMATRIX *mres; |
480 |
|
|
int i, j, k, h; |
481 |
|
|
|
482 |
|
|
if ((m1 == NULL) | (m2 == NULL) || |
483 |
|
|
(m1->ncomp != m2->ncomp) | (m1->ncols != m2->nrows)) |
484 |
|
|
return(NULL); |
485 |
|
|
mres = rmx_alloc(m1->nrows, m2->ncols, m1->ncomp); |
486 |
|
|
if (mres == NULL) |
487 |
|
|
return(NULL); |
488 |
greg |
2.6 |
i = rmx_newtype(m1->dtype, m2->dtype); |
489 |
|
|
if (i) |
490 |
|
|
mres->dtype = i; |
491 |
|
|
else |
492 |
|
|
rmx_addinfo(mres, rmx_mismatch_warn); |
493 |
greg |
2.1 |
for (i = mres->nrows; i--; ) |
494 |
|
|
for (j = mres->ncols; j--; ) |
495 |
greg |
2.8 |
for (k = mres->ncomp; k--; ) { |
496 |
greg |
2.1 |
long double d = 0; |
497 |
greg |
2.8 |
for (h = m1->ncols; h--; ) |
498 |
greg |
2.1 |
d += (long double)rmx_lval(m1,i,h,k) * |
499 |
|
|
(long double)rmx_lval(m2,h,j,k); |
500 |
|
|
rmx_lval(mres,i,j,k) = (double)d; |
501 |
|
|
} |
502 |
|
|
return(mres); |
503 |
|
|
} |
504 |
|
|
|
505 |
|
|
/* Sum second matrix into first, applying scale factor beforehand */ |
506 |
|
|
int |
507 |
|
|
rmx_sum(RMATRIX *msum, const RMATRIX *madd, const double sf[]) |
508 |
|
|
{ |
509 |
|
|
double *mysf = NULL; |
510 |
|
|
int i, j, k; |
511 |
|
|
|
512 |
|
|
if ((msum == NULL) | (madd == NULL) || |
513 |
|
|
(msum->nrows != madd->nrows) | |
514 |
|
|
(msum->ncols != madd->ncols) | |
515 |
|
|
(msum->ncomp != madd->ncomp)) |
516 |
|
|
return(0); |
517 |
|
|
if (sf == NULL) { |
518 |
|
|
mysf = (double *)malloc(sizeof(double)*msum->ncomp); |
519 |
|
|
if (mysf == NULL) |
520 |
|
|
return(0); |
521 |
|
|
for (k = msum->ncomp; k--; ) |
522 |
|
|
mysf[k] = 1; |
523 |
|
|
sf = mysf; |
524 |
|
|
} |
525 |
greg |
2.6 |
i = rmx_newtype(msum->dtype, madd->dtype); |
526 |
|
|
if (i) |
527 |
|
|
msum->dtype = i; |
528 |
|
|
else |
529 |
|
|
rmx_addinfo(msum, rmx_mismatch_warn); |
530 |
greg |
2.1 |
for (i = msum->nrows; i--; ) |
531 |
|
|
for (j = msum->ncols; j--; ) |
532 |
|
|
for (k = msum->ncomp; k--; ) |
533 |
|
|
rmx_lval(msum,i,j,k) += sf[k] * rmx_lval(madd,i,j,k); |
534 |
|
|
|
535 |
|
|
free(mysf); |
536 |
|
|
return(1); |
537 |
|
|
} |
538 |
|
|
|
539 |
|
|
/* Scale the given matrix by the indicated scalar component vector */ |
540 |
|
|
int |
541 |
|
|
rmx_scale(RMATRIX *rm, const double sf[]) |
542 |
|
|
{ |
543 |
|
|
int i, j, k; |
544 |
|
|
|
545 |
|
|
if ((rm == NULL) | (sf == NULL)) |
546 |
|
|
return(0); |
547 |
|
|
for (i = rm->nrows; i--; ) |
548 |
|
|
for (j = rm->ncols; j--; ) |
549 |
|
|
for (k = rm->ncomp; k--; ) |
550 |
|
|
rmx_lval(rm,i,j,k) *= sf[k]; |
551 |
|
|
|
552 |
|
|
return(1); |
553 |
|
|
} |
554 |
|
|
|
555 |
|
|
/* Allocate new matrix and apply component transformation */ |
556 |
|
|
RMATRIX * |
557 |
|
|
rmx_transform(const RMATRIX *msrc, int n, const double cmat[]) |
558 |
|
|
{ |
559 |
|
|
int i, j, ks, kd; |
560 |
|
|
RMATRIX *dnew; |
561 |
|
|
|
562 |
|
|
if ((msrc == NULL) | (n <= 0) | (cmat == NULL)) |
563 |
|
|
return(NULL); |
564 |
|
|
dnew = rmx_alloc(msrc->nrows, msrc->ncols, n); |
565 |
|
|
if (dnew == NULL) |
566 |
|
|
return(NULL); |
567 |
greg |
2.6 |
dnew->dtype = msrc->dtype; |
568 |
greg |
2.1 |
for (i = dnew->nrows; i--; ) |
569 |
|
|
for (j = dnew->ncols; j--; ) |
570 |
|
|
for (kd = dnew->ncomp; kd--; ) { |
571 |
|
|
double d = 0; |
572 |
|
|
for (ks = msrc->ncomp; ks--; ) |
573 |
|
|
d += cmat[kd*msrc->ncomp + ks] * rmx_lval(msrc,i,j,ks); |
574 |
|
|
rmx_lval(dnew,i,j,kd) = d; |
575 |
|
|
} |
576 |
|
|
return(dnew); |
577 |
|
|
} |
578 |
|
|
|
579 |
|
|
/* Convert a color matrix to newly allocated RMATRIX buffer */ |
580 |
|
|
RMATRIX * |
581 |
|
|
rmx_from_cmatrix(const CMATRIX *cm) |
582 |
|
|
{ |
583 |
|
|
int i, j; |
584 |
|
|
RMATRIX *dnew; |
585 |
|
|
|
586 |
|
|
if (cm == NULL) |
587 |
|
|
return(NULL); |
588 |
|
|
dnew = rmx_alloc(cm->nrows, cm->ncols, 3); |
589 |
|
|
if (dnew == NULL) |
590 |
|
|
return(NULL); |
591 |
greg |
2.6 |
dnew->dtype = DTfloat; |
592 |
greg |
2.1 |
for (i = dnew->nrows; i--; ) |
593 |
|
|
for (j = dnew->ncols; j--; ) { |
594 |
|
|
const COLORV *cv = cm_lval(cm,i,j); |
595 |
|
|
rmx_lval(dnew,i,j,0) = cv[0]; |
596 |
|
|
rmx_lval(dnew,i,j,1) = cv[1]; |
597 |
|
|
rmx_lval(dnew,i,j,2) = cv[2]; |
598 |
|
|
} |
599 |
|
|
return(dnew); |
600 |
|
|
} |
601 |
|
|
|
602 |
|
|
/* Convert general matrix to newly allocated CMATRIX buffer */ |
603 |
|
|
CMATRIX * |
604 |
|
|
cm_from_rmatrix(const RMATRIX *rm) |
605 |
|
|
{ |
606 |
|
|
int i, j; |
607 |
|
|
CMATRIX *cnew; |
608 |
|
|
|
609 |
|
|
if (rm == NULL || rm->ncomp != 3) |
610 |
|
|
return(NULL); |
611 |
|
|
cnew = cm_alloc(rm->nrows, rm->ncols); |
612 |
|
|
if (cnew == NULL) |
613 |
|
|
return(NULL); |
614 |
|
|
for (i = cnew->nrows; i--; ) |
615 |
|
|
for (j = cnew->ncols; j--; ) { |
616 |
|
|
COLORV *cv = cm_lval(cnew,i,j); |
617 |
|
|
cv[0] = (COLORV)rmx_lval(rm,i,j,0); |
618 |
|
|
cv[1] = (COLORV)rmx_lval(rm,i,j,1); |
619 |
|
|
cv[2] = (COLORV)rmx_lval(rm,i,j,2); |
620 |
|
|
} |
621 |
|
|
return(cnew); |
622 |
|
|
} |