1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: rhpict.c,v 3.16 2003/10/22 02:06:34 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* Radiance holodeck picture generator |
6 |
*/ |
7 |
|
8 |
#include <string.h> |
9 |
|
10 |
#include "platform.h" |
11 |
#include "rterror.h" |
12 |
#include "rholo.h" |
13 |
#include "view.h" |
14 |
|
15 |
char *progname; /* our program name */ |
16 |
char *hdkfile; /* holodeck file name */ |
17 |
char gargc; /* global argc */ |
18 |
char **gargv; /* global argv */ |
19 |
|
20 |
VIEW myview = STDVIEW; /* current output view */ |
21 |
int xres = 512, yres = 512; /* max. horizontal and vertical resolution */ |
22 |
char *outspec = NULL; /* output file specification */ |
23 |
double randfrac = -1.; /* random resampling fraction */ |
24 |
double pixaspect = 1.; /* pixel aspect ratio */ |
25 |
int seqstart = 0; /* sequence start frame */ |
26 |
double expval = 1.; /* exposure value */ |
27 |
|
28 |
COLOR *mypixel; /* pixels being rendered */ |
29 |
float *myweight; /* weights (used to compute final pixels) */ |
30 |
float *mydepth; /* depth values (visibility culling) */ |
31 |
int hres, vres; /* current horizontal and vertical res. */ |
32 |
|
33 |
extern int nowarn; /* turn warnings off? */ |
34 |
|
35 |
static void dopicture(int fn); |
36 |
static void render_frame(PACKHEAD *bl, int nb); |
37 |
static void startpicture(int fn); |
38 |
static int endpicture(void); |
39 |
static void initialize(void); |
40 |
/* from rhpict2.c */ |
41 |
extern void pixFinish(double ransamp); |
42 |
extern void pixBeam(BEAM *bp, HDBEAMI *hb); |
43 |
|
44 |
|
45 |
int |
46 |
main( |
47 |
int argc, |
48 |
char *argv[] |
49 |
) |
50 |
{ |
51 |
int i, rval; |
52 |
|
53 |
gargc = argc; gargv = argv; |
54 |
progname = argv[0]; /* get arguments */ |
55 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
56 |
rval = getviewopt(&myview, argc-i, argv+i); |
57 |
if (rval >= 0) { /* view option */ |
58 |
i += rval; |
59 |
continue; |
60 |
} |
61 |
switch (argv[i][1]) { |
62 |
case 'w': /* turn off warnings */ |
63 |
nowarn++; |
64 |
break; |
65 |
case 'p': /* pixel aspect/exposure */ |
66 |
if (badarg(argc-i-1,argv+i+1,"f")) |
67 |
goto userr; |
68 |
if (argv[i][2] == 'a') |
69 |
pixaspect = atof(argv[++i]); |
70 |
else if (argv[i][2] == 'e') { |
71 |
expval = atof(argv[++i]); |
72 |
if ((argv[i][0] == '-') | (argv[i][0] == '+')) |
73 |
expval = pow(2., expval); |
74 |
} else |
75 |
goto userr; |
76 |
break; |
77 |
case 'x': /* horizontal resolution */ |
78 |
if (badarg(argc-i-1,argv+i+1,"i")) |
79 |
goto userr; |
80 |
xres = atoi(argv[++i]); |
81 |
break; |
82 |
case 'y': /* vertical resolution */ |
83 |
if (badarg(argc-i-1,argv+i+1,"i")) |
84 |
goto userr; |
85 |
yres = atoi(argv[++i]); |
86 |
break; |
87 |
case 'o': /* output file specificaiton */ |
88 |
if (badarg(argc-i-1,argv+i+1,"s")) |
89 |
goto userr; |
90 |
outspec = argv[++i]; |
91 |
break; |
92 |
case 'r': /* random sampling */ |
93 |
if (badarg(argc-i-1,argv+i+1,"f")) |
94 |
goto userr; |
95 |
randfrac = atof(argv[++i]); |
96 |
break; |
97 |
case 's': /* smooth sampling */ |
98 |
randfrac = -1.; |
99 |
break; |
100 |
case 'S': /* sequence start */ |
101 |
if (badarg(argc-i-1,argv+i+1,"i")) |
102 |
goto userr; |
103 |
seqstart = atoi(argv[++i]); |
104 |
break; |
105 |
case 'v': /* view file */ |
106 |
if (argv[i][2]!='f' || badarg(argc-i-1,argv+i+1,"s")) |
107 |
goto userr; |
108 |
rval = viewfile(argv[++i], &myview, NULL); |
109 |
if (rval < 0) { |
110 |
sprintf(errmsg, "cannot open view file \"%s\"", |
111 |
argv[i]); |
112 |
error(SYSTEM, errmsg); |
113 |
} else if (rval == 0) { |
114 |
sprintf(errmsg, "bad view file \"%s\"", |
115 |
argv[i]); |
116 |
error(USER, errmsg); |
117 |
} |
118 |
break; |
119 |
default: |
120 |
goto userr; |
121 |
} |
122 |
} |
123 |
/* open holodeck file */ |
124 |
if (i != argc-1) |
125 |
goto userr; |
126 |
hdkfile = argv[i]; |
127 |
initialize(); |
128 |
/* render picture(s) */ |
129 |
if (seqstart <= 0) |
130 |
dopicture(0); |
131 |
else |
132 |
while (nextview(&myview, stdin) != EOF) |
133 |
dopicture(seqstart++); |
134 |
quit(0); /* all done! */ |
135 |
userr: |
136 |
fprintf(stderr, |
137 |
"Usage: %s [-w][-r rf][-pa pa][-pe ex][-x hr][-y vr][-S stfn][-o outp][view] input.hdk\n", |
138 |
progname); |
139 |
quit(1); |
140 |
return 1; /* pro forma return */ |
141 |
} |
142 |
|
143 |
|
144 |
static void |
145 |
dopicture( /* render view from holodeck */ |
146 |
int fn |
147 |
) |
148 |
{ |
149 |
char *err; |
150 |
int rval; |
151 |
BEAMLIST blist; |
152 |
|
153 |
if ((err = setview(&myview)) != NULL) { |
154 |
sprintf(errmsg, "%s -- skipping frame %d", err, fn); |
155 |
error(WARNING, errmsg); |
156 |
return; |
157 |
} |
158 |
startpicture(fn); /* open output picture */ |
159 |
/* determine relevant beams */ |
160 |
viewbeams(&myview, hres, vres, &blist); |
161 |
/* render image */ |
162 |
if (blist.nb > 0) { |
163 |
render_frame(blist.bl, blist.nb); |
164 |
free((void *)blist.bl); |
165 |
} else { |
166 |
sprintf(errmsg, "no section visible in frame %d", fn); |
167 |
error(WARNING, errmsg); |
168 |
} |
169 |
rval = endpicture(); /* write pixel values */ |
170 |
if (rval < 0) { |
171 |
sprintf(errmsg, "error writing frame %d", fn); |
172 |
error(SYSTEM, errmsg); |
173 |
} |
174 |
#ifdef DEBUG |
175 |
if (blist.nb > 0 & rval > 0) { |
176 |
sprintf(errmsg, "%d unrendered pixels in frame %d (%.1f%%)", |
177 |
rval, fn, 100.*rval/(hres*vres)); |
178 |
error(WARNING, errmsg); |
179 |
} |
180 |
#endif |
181 |
} |
182 |
|
183 |
|
184 |
static void |
185 |
render_frame( /* render frame from beam values */ |
186 |
register PACKHEAD *bl, |
187 |
int nb |
188 |
) |
189 |
{ |
190 |
register HDBEAMI *bil; |
191 |
register int i; |
192 |
|
193 |
if (nb <= 0) return; |
194 |
if ((bil = (HDBEAMI *)malloc(nb*sizeof(HDBEAMI))) == NULL) |
195 |
error(SYSTEM, "out of memory in render_frame"); |
196 |
for (i = nb; i--; ) { |
197 |
bil[i].h = hdlist[bl[i].hd]; |
198 |
bil[i].b = bl[i].bi; |
199 |
} |
200 |
hdloadbeams(bil, nb, pixBeam); |
201 |
pixFinish(randfrac); |
202 |
free((void *)bil); |
203 |
} |
204 |
|
205 |
|
206 |
static void |
207 |
startpicture( /* initialize picture for rendering & output */ |
208 |
int fn |
209 |
) |
210 |
{ |
211 |
extern char VersionID[]; |
212 |
double pa = pixaspect; |
213 |
char fname[256]; |
214 |
/* compute picture resolution */ |
215 |
hres = xres; vres = yres; |
216 |
normaspect(viewaspect(&myview), &pa, &hres, &vres); |
217 |
/* prepare output */ |
218 |
if (outspec != NULL) { |
219 |
sprintf(fname, outspec, fn); |
220 |
if (freopen(fname, "w", stdout) == NULL) { |
221 |
sprintf(errmsg, "cannot open output \"%s\"", fname); |
222 |
error(SYSTEM, errmsg); |
223 |
} |
224 |
} |
225 |
/* write header */ |
226 |
newheader("RADIANCE", stdout); |
227 |
printf("SOFTWARE= %s\n", VersionID); |
228 |
printargs(gargc, gargv, stdout); |
229 |
if (fn) |
230 |
printf("FRAME=%d\n", fn); |
231 |
fputs(VIEWSTR, stdout); |
232 |
fprintview(&myview, stdout); |
233 |
fputc('\n', stdout); |
234 |
if ((pa < 0.99) | (pa > 1.01)) |
235 |
fputaspect(pa, stdout); |
236 |
if ((expval < 0.99) | (expval > 1.01)) |
237 |
fputexpos(expval, stdout); |
238 |
fputformat(COLRFMT, stdout); |
239 |
fputc('\n', stdout); |
240 |
/* write resolution (standard order) */ |
241 |
fprtresolu(hres, vres, stdout); |
242 |
/* prepare image buffers */ |
243 |
memset((char *)mypixel, '\0', hres*vres*sizeof(COLOR)); |
244 |
memset((char *)myweight, '\0', hres*vres*sizeof(float)); |
245 |
memset((char *)mydepth, '\0', hres*vres*sizeof(float)); |
246 |
} |
247 |
|
248 |
|
249 |
static int |
250 |
endpicture(void) /* finish and write out pixels */ |
251 |
{ |
252 |
int lastr = -1, nunrend = 0; |
253 |
int32 lastp, lastrp; |
254 |
register int32 p; |
255 |
register double d; |
256 |
/* compute final pixel values */ |
257 |
for (p = hres*vres; p--; ) { |
258 |
if (myweight[p] <= FTINY) { |
259 |
if (lastr >= 0) { |
260 |
if (p/hres == lastp/hres) |
261 |
copycolor(mypixel[p], mypixel[lastp]); |
262 |
else |
263 |
copycolor(mypixel[p], mypixel[lastrp]); |
264 |
} |
265 |
nunrend++; |
266 |
continue; |
267 |
} |
268 |
d = expval/myweight[p]; |
269 |
scalecolor(mypixel[p], d); |
270 |
if ((lastp=p)/hres != lastr) |
271 |
lastr = (lastrp=p)/hres; |
272 |
} |
273 |
/* write each scanline */ |
274 |
for (p = vres; p--; ) |
275 |
if (fwritescan(mypixel+p*hres, hres, stdout) < 0) |
276 |
return(-1); |
277 |
if (fflush(stdout) == EOF) |
278 |
return(-1); |
279 |
return(nunrend); |
280 |
} |
281 |
|
282 |
|
283 |
static void |
284 |
initialize(void) /* initialize holodeck and buffers */ |
285 |
{ |
286 |
int fd; |
287 |
FILE *fp; |
288 |
int n; |
289 |
int32 nextloc; |
290 |
/* open holodeck file */ |
291 |
if ((fp = fopen(hdkfile, "r")) == NULL) { |
292 |
sprintf(errmsg, "cannot open \"%s\" for reading", hdkfile); |
293 |
error(SYSTEM, errmsg); |
294 |
} |
295 |
/* check header format */ |
296 |
checkheader(fp, HOLOFMT, NULL); |
297 |
/* check magic number */ |
298 |
if (getw(fp) != HOLOMAGIC) { |
299 |
sprintf(errmsg, "bad magic number in holodeck file \"%s\"", |
300 |
hdkfile); |
301 |
error(USER, errmsg); |
302 |
} |
303 |
nextloc = ftell(fp); /* get stdio position */ |
304 |
fd = dup(fileno(fp)); /* dup file descriptor */ |
305 |
fclose(fp); /* done with stdio */ |
306 |
for (n = 0; nextloc > 0L; n++) { /* initialize each section */ |
307 |
lseek(fd, (off_t)nextloc, SEEK_SET); |
308 |
read(fd, (char *)&nextloc, sizeof(nextloc)); |
309 |
hdinit(fd, NULL); |
310 |
} |
311 |
/* allocate picture buffer */ |
312 |
mypixel = (COLOR *)bmalloc(xres*yres*sizeof(COLOR)); |
313 |
myweight = (float *)bmalloc(xres*yres*sizeof(float)); |
314 |
mydepth = (float *)bmalloc(xres*yres*sizeof(float)); |
315 |
if ((mypixel == NULL) | (myweight == NULL) | (mydepth == NULL)) |
316 |
error(SYSTEM, "out of memory in initialize"); |
317 |
} |
318 |
|
319 |
|
320 |
void |
321 |
eputs(s) /* put error message to stderr */ |
322 |
register char *s; |
323 |
{ |
324 |
static int midline = 0; |
325 |
|
326 |
if (!*s) |
327 |
return; |
328 |
if (!midline++) { /* prepend line with program name */ |
329 |
fputs(progname, stderr); |
330 |
fputs(": ", stderr); |
331 |
} |
332 |
fputs(s, stderr); |
333 |
if (s[strlen(s)-1] == '\n') { |
334 |
fflush(stderr); |
335 |
midline = 0; |
336 |
} |
337 |
} |