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* xorg yorg zorg xdir ydir zdir |
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* |
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* The direction need not be normalized. Output is flexible. |
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* If the direction vector is (0,0,0), then the output is flushed. |
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* All values default to ascii representation of real |
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* numbers. Binary representations can be selected |
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* with '-ff' for float or '-fd' for double. By default, |
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#include "ray.h" |
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#include "octree.h" |
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|
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#include "otypes.h" |
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int inform = 'a'; /* input format */ |
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int vresolu = 0; /* vertical resolution */ |
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|
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .01; /* shadow threshold */ |
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double shadthresh = .05; /* shadow threshold */ |
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double shadcert = .5; /* shadow certainty */ |
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|
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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 4e-3; /* minimum ray weight */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
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int ambres = 128; /* ambient resolution */ |
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int ambres = 32; /* ambient resolution */ |
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int ambdiv = 128; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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int ambounce = 0; /* ambient bounces */ |
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static RAY thisray; /* for our convenience */ |
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extern int oputo(), oputd(), oputv(), oputl(), |
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static int oputo(), oputd(), oputv(), oputl(), |
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oputp(), oputn(), oputs(), oputw(), oputm(); |
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static int (*ray_out[10])(), (*every_out[10])(); |
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static int castonly; |
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extern int puta(), putf(), putd(); |
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static int puta(), putf(), putd(); |
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static int (*putreal)(); |
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|
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while (getvec(orig, inform, fp) == 0 && |
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getvec(direc, inform, fp) == 0) { |
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|
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if (normalize(direc) == 0.0) |
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error(USER, "zero direction vector"); |
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if (normalize(direc) == 0.0) { /* zero ==> flush */ |
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fflush(stdout); |
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continue; |
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} |
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/* compute and print */ |
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if (outvals[0] == 'i') |
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irrad(orig, direc); |
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else |
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radiance(orig, direc); |
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/* flush if requested */ |
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/* flush if time */ |
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if (--nextflush == 0) { |
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fflush(stdout); |
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nextflush = hresolu; |
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extern int ourtrace(), (*trace)(); |
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register int (**table)() = ray_out; |
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castonly = 1; |
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while (*vs) |
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switch (*vs++) { |
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case 't': /* trace */ |
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*table = NULL; |
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table = every_out; |
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trace = ourtrace; |
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castonly = 0; |
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break; |
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case 'o': /* origin */ |
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*table++ = oputo; |
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break; |
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case 'v': /* value */ |
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*table++ = oputv; |
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castonly = 0; |
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break; |
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case 'l': /* length */ |
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*table++ = oputl; |
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castonly = 0; |
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break; |
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case 'p': /* point */ |
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*table++ = oputp; |
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VCOPY(thisray.rorg, org); |
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VCOPY(thisray.rdir, dir); |
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rayorigin(&thisray, NULL, PRIMARY, 1.0); |
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< |
rayvalue(&thisray); |
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> |
if (castonly) |
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localhit(&thisray, &thescene) || sourcehit(&thisray); |
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else |
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> |
rayvalue(&thisray); |
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|
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if (ray_out[0] == NULL) |
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return; |
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return(-1); |
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break; |
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case 'f': /* binary float */ |
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if (fread(vf, sizeof(float), 3, fp) != 3) |
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> |
if (fread((char *)vf, sizeof(float), 3, fp) != 3) |
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return(-1); |
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vec[0] = vf[0]; vec[1] = vf[1]; vec[2] = vf[2]; |
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break; |
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case 'd': /* binary double */ |
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< |
if (fread(vec, sizeof(double), 3, fp) != 3) |
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> |
if (fread((char *)vec, sizeof(double), 3, fp) != 3) |
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return(-1); |
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break; |
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} |
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oputl(r) /* print length */ |
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register RAY *r; |
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{ |
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< |
if (r->rot < FHUGE) |
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< |
(*putreal)(r->rot); |
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< |
else |
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< |
(*putreal)(0.0); |
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> |
(*putreal)(r->rt); |
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} |
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|
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|
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putd(v) /* print binary double */ |
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double v; |
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{ |
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< |
fwrite(&v, sizeof(v), 1, stdout); |
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> |
fwrite((char *)&v, sizeof(v), 1, stdout); |
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} |
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|
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|
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{ |
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float f = v; |
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|
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< |
fwrite(&f, sizeof(f), 1, stdout); |
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> |
fwrite((char *)&f, sizeof(f), 1, stdout); |
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} |
