1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: dctimestep.c,v 2.28 2014/01/20 21:29:04 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* Compute time-step result using Daylight Coefficient method. |
6 |
* |
7 |
* G. Ward |
8 |
*/ |
9 |
|
10 |
#include <ctype.h> |
11 |
#include "standard.h" |
12 |
#include "cmatrix.h" |
13 |
#include "platform.h" |
14 |
#include "resolu.h" |
15 |
|
16 |
char *progname; /* global argv[0] */ |
17 |
|
18 |
/* Sum together a set of images and write result to fout */ |
19 |
static int |
20 |
sum_images(const char *fspec, const CMATRIX *cv, FILE *fout) |
21 |
{ |
22 |
int myDT = DTfromHeader; |
23 |
COLOR *scanline = NULL; |
24 |
CMATRIX *pmat = NULL; |
25 |
int myXR=0, myYR=0; |
26 |
int i, y; |
27 |
|
28 |
if (cv->ncols != 1) |
29 |
error(INTERNAL, "expected vector in sum_images()"); |
30 |
for (i = 0; i < cv->nrows; i++) { |
31 |
const COLORV *scv = cv_lval(cv,i); |
32 |
char fname[1024]; |
33 |
FILE *fp; |
34 |
int dt, xr, yr; |
35 |
COLORV *psp; |
36 |
/* check for zero */ |
37 |
if ((scv[RED] == 0) & (scv[GRN] == 0) & (scv[BLU] == 0) && |
38 |
(myDT != DTfromHeader) | (i < cv->nrows-1)) |
39 |
continue; |
40 |
/* open next picture */ |
41 |
sprintf(fname, fspec, i); |
42 |
if ((fp = fopen(fname, "r")) == NULL) { |
43 |
sprintf(errmsg, "cannot open picture '%s'", fname); |
44 |
error(SYSTEM, errmsg); |
45 |
} |
46 |
SET_FILE_BINARY(fp); |
47 |
dt = getDTfromHeader(fp); |
48 |
if ((dt != DTrgbe) & (dt != DTxyze) || |
49 |
!fscnresolu(&xr, &yr, fp)) { |
50 |
sprintf(errmsg, "file '%s' not a picture", fname); |
51 |
error(USER, errmsg); |
52 |
} |
53 |
if (myDT == DTfromHeader) { /* on first one */ |
54 |
myDT = dt; |
55 |
myXR = xr; myYR = yr; |
56 |
scanline = (COLOR *)malloc(sizeof(COLOR)*myXR); |
57 |
if (scanline == NULL) |
58 |
error(SYSTEM, "out of memory in sum_images()"); |
59 |
pmat = cm_alloc(myYR, myXR); |
60 |
memset(pmat->cmem, 0, sizeof(COLOR)*myXR*myYR); |
61 |
/* finish header */ |
62 |
fputformat(myDT==DTrgbe ? COLRFMT : CIEFMT, fout); |
63 |
fputc('\n', fout); |
64 |
fprtresolu(myXR, myYR, fout); |
65 |
fflush(fout); |
66 |
} else if ((dt != myDT) | (xr != myXR) | (yr != myYR)) { |
67 |
sprintf(errmsg, "picture '%s' format/size mismatch", |
68 |
fname); |
69 |
error(USER, errmsg); |
70 |
} |
71 |
psp = pmat->cmem; |
72 |
for (y = 0; y < yr; y++) { /* read it in */ |
73 |
int x; |
74 |
if (freadscan(scanline, xr, fp) < 0) { |
75 |
sprintf(errmsg, "error reading picture '%s'", |
76 |
fname); |
77 |
error(SYSTEM, errmsg); |
78 |
} |
79 |
/* sum in scanline */ |
80 |
for (x = 0; x < xr; x++, psp += 3) { |
81 |
multcolor(scanline[x], scv); |
82 |
addcolor(psp, scanline[x]); |
83 |
} |
84 |
} |
85 |
fclose(fp); /* done this picture */ |
86 |
} |
87 |
free(scanline); |
88 |
/* write scanlines */ |
89 |
for (y = 0; y < myYR; y++) |
90 |
if (fwritescan((COLOR *)cm_lval(pmat, y, 0), myXR, fout) < 0) |
91 |
return(0); |
92 |
cm_free(pmat); /* all done */ |
93 |
return(fflush(fout) == 0); |
94 |
} |
95 |
|
96 |
/* check to see if a string contains a %d or %o specification */ |
97 |
static int |
98 |
hasNumberFormat(const char *s) |
99 |
{ |
100 |
if (s == NULL) |
101 |
return(0); |
102 |
|
103 |
while (*s) { |
104 |
while (*s != '%') |
105 |
if (!*s++) |
106 |
return(0); |
107 |
if (*++s == '%') { /* ignore "%%" */ |
108 |
++s; |
109 |
continue; |
110 |
} |
111 |
while (isdigit(*s)) /* field length */ |
112 |
++s; |
113 |
/* field we'll use? */ |
114 |
if ((*s == 'd') | (*s == 'i') | (*s == 'o') | |
115 |
(*s == 'x') | (*s == 'X')) |
116 |
return(1); |
117 |
} |
118 |
return(0); /* didn't find one */ |
119 |
} |
120 |
|
121 |
int |
122 |
main(int argc, char *argv[]) |
123 |
{ |
124 |
int skyfmt = DTascii; |
125 |
int nsteps = 1; |
126 |
char *ofspec = NULL; |
127 |
FILE *ofp = stdout; |
128 |
CMATRIX *cmtx; /* component vector/matrix result */ |
129 |
char fnbuf[256]; |
130 |
int a, i; |
131 |
|
132 |
progname = argv[0]; |
133 |
/* get options */ |
134 |
for (a = 1; a < argc && argv[a][0] == '-'; a++) |
135 |
switch (argv[a][1]) { |
136 |
case 'n': |
137 |
nsteps = atoi(argv[++a]); |
138 |
if (nsteps <= 0) |
139 |
goto userr; |
140 |
break; |
141 |
case 'o': |
142 |
ofspec = argv[++a]; |
143 |
break; |
144 |
case 'i': |
145 |
switch (argv[a][2]) { |
146 |
case 'f': |
147 |
skyfmt = DTfloat; |
148 |
break; |
149 |
case 'd': |
150 |
skyfmt = DTdouble; |
151 |
break; |
152 |
case 'a': |
153 |
skyfmt = DTascii; |
154 |
break; |
155 |
default: |
156 |
goto userr; |
157 |
} |
158 |
break; |
159 |
default: |
160 |
goto userr; |
161 |
} |
162 |
if ((argc-a < 1) | (argc-a > 4)) |
163 |
goto userr; |
164 |
|
165 |
if (argc-a > 2) { /* VTDs expression */ |
166 |
CMATRIX *smtx, *Dmat, *Tmat, *imtx; |
167 |
/* get sky vector/matrix */ |
168 |
smtx = cm_load(argv[a+3], 0, nsteps, skyfmt); |
169 |
/* load BSDF */ |
170 |
Tmat = cm_loadBTDF(argv[a+1]); |
171 |
/* load Daylight matrix */ |
172 |
Dmat = cm_load(argv[a+2], Tmat==NULL ? 0 : Tmat->ncols, |
173 |
smtx->nrows, DTfromHeader); |
174 |
/* multiply vector through */ |
175 |
imtx = cm_multiply(Dmat, smtx); |
176 |
cm_free(Dmat); cm_free(smtx); |
177 |
cmtx = cm_multiply(Tmat, imtx); |
178 |
cm_free(Tmat); |
179 |
cm_free(imtx); |
180 |
} else { /* sky vector/matrix only */ |
181 |
cmtx = cm_load(argv[a+1], 0, nsteps, skyfmt); |
182 |
} |
183 |
/* prepare output stream */ |
184 |
if ((ofspec != NULL) & (nsteps == 1) && hasNumberFormat(ofspec)) { |
185 |
sprintf(fnbuf, ofspec, 1); |
186 |
ofspec = fnbuf; |
187 |
} |
188 |
if (ofspec != NULL && !hasNumberFormat(ofspec)) { |
189 |
if ((ofp = fopen(ofspec, "w")) == NULL) { |
190 |
fprintf(stderr, "%s: cannot open '%s' for output\n", |
191 |
progname, ofspec); |
192 |
return(1); |
193 |
} |
194 |
ofspec = NULL; /* only need to open once */ |
195 |
} |
196 |
if (hasNumberFormat(argv[a])) { /* generating image(s) */ |
197 |
if (ofspec == NULL) { |
198 |
SET_FILE_BINARY(ofp); |
199 |
newheader("RADIANCE", ofp); |
200 |
printargs(argc, argv, ofp); |
201 |
fputnow(ofp); |
202 |
} |
203 |
if (nsteps > 1) /* multiple output frames? */ |
204 |
for (i = 0; i < nsteps; i++) { |
205 |
CMATRIX *cvec = cm_column(cmtx, i); |
206 |
if (ofspec != NULL) { |
207 |
sprintf(fnbuf, ofspec, i+1); |
208 |
if ((ofp = fopen(fnbuf, "wb")) == NULL) { |
209 |
fprintf(stderr, |
210 |
"%s: cannot open '%s' for output\n", |
211 |
progname, fnbuf); |
212 |
return(1); |
213 |
} |
214 |
newheader("RADIANCE", ofp); |
215 |
printargs(argc, argv, ofp); |
216 |
fputnow(ofp); |
217 |
} |
218 |
fprintf(ofp, "FRAME=%d\n", i+1); |
219 |
if (!sum_images(argv[a], cvec, ofp)) |
220 |
return(1); |
221 |
if (ofspec != NULL) { |
222 |
if (fclose(ofp) == EOF) { |
223 |
fprintf(stderr, |
224 |
"%s: error writing to '%s'\n", |
225 |
progname, fnbuf); |
226 |
return(1); |
227 |
} |
228 |
ofp = stdout; |
229 |
} |
230 |
cm_free(cvec); |
231 |
} |
232 |
else if (!sum_images(argv[a], cmtx, ofp)) |
233 |
return(1); |
234 |
} else { /* generating vector/matrix */ |
235 |
CMATRIX *Vmat = cm_load(argv[a], 0, cmtx->nrows, DTfromHeader); |
236 |
CMATRIX *rmtx = cm_multiply(Vmat, cmtx); |
237 |
cm_free(Vmat); |
238 |
if (ofspec != NULL) /* multiple vector files? */ |
239 |
for (i = 0; i < nsteps; i++) { |
240 |
CMATRIX *rvec = cm_column(rmtx, i); |
241 |
sprintf(fnbuf, ofspec, i+1); |
242 |
if ((ofp = fopen(fnbuf, "w")) == NULL) { |
243 |
fprintf(stderr, |
244 |
"%s: cannot open '%s' for output\n", |
245 |
progname, fnbuf); |
246 |
return(1); |
247 |
} |
248 |
cm_print(rvec, ofp); |
249 |
if (fclose(ofp) == EOF) { |
250 |
fprintf(stderr, |
251 |
"%s: error writing to '%s'\n", |
252 |
progname, fnbuf); |
253 |
return(1); |
254 |
} |
255 |
ofp = stdout; |
256 |
cm_free(rvec); |
257 |
} |
258 |
else |
259 |
cm_print(rmtx, ofp); |
260 |
cm_free(rmtx); |
261 |
} |
262 |
if (fflush(ofp) == EOF) { /* final clean-up */ |
263 |
fprintf(stderr, "%s: write error on output\n", progname); |
264 |
return(1); |
265 |
} |
266 |
cm_free(cmtx); |
267 |
return(0); |
268 |
userr: |
269 |
fprintf(stderr, "Usage: %s [-n nsteps][-o ospec][-i{f|d}] DCspec [skyf]\n", |
270 |
progname); |
271 |
fprintf(stderr, " or: %s [-n nsteps][-o ospec][-i{f|d}] Vspec Tbsdf.xml Dmat.dat [skyf]\n", |
272 |
progname); |
273 |
return(1); |
274 |
} |