14 |
|
#include "otypes.h" |
15 |
|
#include "rtotypes.h" |
16 |
|
#include "func.h" |
17 |
+ |
#include "pmapmat.h" |
18 |
|
|
19 |
|
/* |
20 |
|
* Arguments to this material include the color and specularity. |
67 |
|
OBJREC *mp; /* material pointer */ |
68 |
|
RAY *pr; /* intersected ray */ |
69 |
|
DATARRAY *dp; /* data array for PDATA, MDATA or TDATA */ |
70 |
< |
COLOR mcolor; /* material (or pattern) color */ |
71 |
< |
COLOR rdiff; /* diffuse reflection */ |
72 |
< |
COLOR tdiff; /* diffuse transmission */ |
70 |
> |
SCOLOR mcolor; /* material (or pattern) color */ |
71 |
> |
SCOLOR rdiff; /* diffuse reflection */ |
72 |
> |
SCOLOR tdiff; /* diffuse transmission */ |
73 |
|
double rspec; /* specular reflectance (1 for BRDTF) */ |
74 |
|
double trans; /* transmissivity (.5 for BRDTF) */ |
75 |
|
double tspec; /* specular transmittance (1 for BRDTF) */ |
83 |
|
|
84 |
|
static void |
85 |
|
dirbrdf( /* compute source contribution */ |
86 |
< |
COLOR cval, /* returned coefficient */ |
87 |
< |
void *nnp, /* material data */ |
86 |
> |
SCOLOR scval, /* returned coefficient */ |
87 |
> |
void *nnp, /* material data */ |
88 |
|
FVECT ldir, /* light source direction */ |
89 |
|
double omega /* light source size */ |
90 |
|
) |
92 |
|
BRDFDAT *np = nnp; |
93 |
|
double ldot; |
94 |
|
double dtmp; |
95 |
+ |
SCOLOR sctmp; |
96 |
|
COLOR ctmp; |
97 |
|
FVECT ldx; |
98 |
< |
static double vldx[5], pt[MAXDIM]; |
98 |
> |
static double vldx[5], pt[MAXDDIM]; |
99 |
|
char **sa; |
100 |
|
int i; |
101 |
|
#define lddx (vldx+1) |
102 |
|
|
103 |
< |
setcolor(cval, 0.0, 0.0, 0.0); |
103 |
> |
scolorblack(scval); |
104 |
|
|
105 |
|
ldot = DOT(np->pnorm, ldir); |
106 |
|
|
116 |
|
* color. The diffuse reflected component will always be |
117 |
|
* modified by the color of the material. |
118 |
|
*/ |
119 |
< |
copycolor(ctmp, np->rdiff); |
119 |
> |
copyscolor(sctmp, np->rdiff); |
120 |
|
dtmp = ldot * omega / PI; |
121 |
< |
scalecolor(ctmp, dtmp); |
122 |
< |
addcolor(cval, ctmp); |
121 |
> |
scalescolor(sctmp, dtmp); |
122 |
> |
saddscolor(scval, sctmp); |
123 |
|
} else { |
124 |
|
/* |
125 |
|
* Diffuse transmitted component. |
126 |
|
*/ |
127 |
< |
copycolor(ctmp, np->tdiff); |
127 |
> |
copyscolor(sctmp, np->tdiff); |
128 |
|
dtmp = -ldot * omega / PI; |
129 |
< |
scalecolor(ctmp, dtmp); |
130 |
< |
addcolor(cval, ctmp); |
129 |
> |
scalescolor(sctmp, dtmp); |
130 |
> |
saddscolor(scval, sctmp); |
131 |
|
} |
132 |
< |
if (ldot > 0.0 ? np->rspec <= FTINY : np->tspec <= FTINY) |
132 |
> |
if ((ldot > 0.0 ? np->rspec <= FTINY : np->tspec <= FTINY) || |
133 |
> |
ambRayInPmap(np->pr)) |
134 |
|
return; /* diffuse only */ |
135 |
|
/* set up function */ |
136 |
|
setbrdfunc(np); |
143 |
|
lddx[3] = omega; |
144 |
|
/* compute BRTDF */ |
145 |
|
if (np->mp->otype == MAT_BRTDF) { |
146 |
< |
if (sa[6][0] == '0') /* special case */ |
146 |
> |
if (sa[6][0] == '0' && !sa[6][1]) /* special case */ |
147 |
|
colval(ctmp,RED) = 0.0; |
148 |
|
else |
149 |
|
colval(ctmp,RED) = funvalue(sa[6], 4, lddx); |
150 |
< |
if (sa[7][0] == '0') |
150 |
> |
if (sa[7][0] == '0' && !sa[7][1]) |
151 |
|
colval(ctmp,GRN) = 0.0; |
152 |
|
else if (!strcmp(sa[7],sa[6])) |
153 |
|
colval(ctmp,GRN) = colval(ctmp,RED); |
154 |
|
else |
155 |
|
colval(ctmp,GRN) = funvalue(sa[7], 4, lddx); |
156 |
< |
if (!strcmp(sa[8],sa[6])) |
156 |
> |
if (sa[8][0] == '0' && !sa[8][1]) |
157 |
> |
colval(ctmp,BLU) = 0.0; |
158 |
> |
else if (!strcmp(sa[8],sa[6])) |
159 |
|
colval(ctmp,BLU) = colval(ctmp,RED); |
160 |
|
else if (!strcmp(sa[8],sa[7])) |
161 |
|
colval(ctmp,BLU) = colval(ctmp,GRN); |
178 |
|
} |
179 |
|
if (dtmp <= FTINY) |
180 |
|
return; |
181 |
+ |
setscolor(sctmp, colval(ctmp,RED), colval(ctmp,GRN), colval(ctmp,BLU)); |
182 |
|
if (ldot > 0.0) { |
183 |
|
/* |
184 |
|
* Compute reflected non-diffuse component. |
185 |
|
*/ |
186 |
|
if ((np->mp->otype == MAT_MFUNC) | (np->mp->otype == MAT_MDATA)) |
187 |
< |
multcolor(ctmp, np->mcolor); |
187 |
> |
smultscolor(sctmp, np->mcolor); |
188 |
|
dtmp = ldot * omega * np->rspec; |
189 |
< |
scalecolor(ctmp, dtmp); |
190 |
< |
addcolor(cval, ctmp); |
189 |
> |
scalescolor(sctmp, dtmp); |
190 |
> |
saddscolor(scval, sctmp); |
191 |
|
} else { |
192 |
|
/* |
193 |
|
* Compute transmitted non-diffuse component. |
194 |
|
*/ |
195 |
|
if ((np->mp->otype == MAT_TFUNC) | (np->mp->otype == MAT_TDATA)) |
196 |
< |
multcolor(ctmp, np->mcolor); |
196 |
> |
smultscolor(sctmp, np->mcolor); |
197 |
|
dtmp = -ldot * omega * np->tspec; |
198 |
< |
scalecolor(ctmp, dtmp); |
199 |
< |
addcolor(cval, ctmp); |
198 |
> |
scalescolor(sctmp, dtmp); |
199 |
> |
saddscolor(scval, sctmp); |
200 |
|
} |
201 |
|
#undef lddx |
202 |
|
} |
208 |
|
RAY *r |
209 |
|
) |
210 |
|
{ |
205 |
– |
int hitfront = 1; |
211 |
|
BRDFDAT nd; |
212 |
|
RAY sr; |
208 |
– |
double mirtest=0, mirdist=0; |
209 |
– |
double transtest, transdist; |
213 |
|
int hasrefl, hastrans; |
214 |
|
int hastexture; |
215 |
< |
COLOR ctmp; |
215 |
> |
SCOLOR sctmp; |
216 |
|
FVECT vtmp; |
217 |
|
double d; |
218 |
|
MFUNC *mf; |
227 |
|
nd.trans = 0.5; |
228 |
|
/* diffuse reflectance */ |
229 |
|
if (r->rod > 0.0) |
230 |
< |
setcolor(nd.rdiff, m->oargs.farg[0], |
230 |
> |
setscolor(nd.rdiff, m->oargs.farg[0], |
231 |
|
m->oargs.farg[1], |
232 |
|
m->oargs.farg[2]); |
233 |
|
else |
234 |
< |
setcolor(nd.rdiff, m->oargs.farg[3], |
234 |
> |
setscolor(nd.rdiff, m->oargs.farg[3], |
235 |
|
m->oargs.farg[4], |
236 |
|
m->oargs.farg[5]); |
237 |
|
/* diffuse transmittance */ |
238 |
< |
setcolor(nd.tdiff, m->oargs.farg[6], |
238 |
> |
setscolor(nd.tdiff, m->oargs.farg[6], |
239 |
|
m->oargs.farg[7], |
240 |
|
m->oargs.farg[8]); |
241 |
|
/* get modifiers */ |
242 |
|
raytexture(r, m->omod); |
243 |
< |
hastexture = DOT(r->pert,r->pert) > FTINY*FTINY; |
243 |
> |
hastexture = (DOT(r->pert,r->pert) > FTINY*FTINY); |
244 |
|
if (hastexture) { /* perturb normal */ |
245 |
|
nd.pdot = raynormal(nd.pnorm, r); |
246 |
|
} else { |
253 |
|
nd.pnorm[i] = -nd.pnorm[i]; |
254 |
|
r->pert[i] = -r->pert[i]; |
255 |
|
} |
253 |
– |
hitfront = 0; |
256 |
|
} |
257 |
< |
copycolor(nd.mcolor, r->pcol); /* get pattern color */ |
258 |
< |
multcolor(nd.rdiff, nd.mcolor); /* modify diffuse values */ |
259 |
< |
multcolor(nd.tdiff, nd.mcolor); |
260 |
< |
hasrefl = bright(nd.rdiff) > FTINY; |
261 |
< |
hastrans = bright(nd.tdiff) > FTINY; |
257 |
> |
copyscolor(nd.mcolor, r->pcol); /* get pattern color */ |
258 |
> |
smultscolor(nd.rdiff, nd.mcolor); /* modify diffuse values */ |
259 |
> |
smultscolor(nd.tdiff, nd.mcolor); |
260 |
> |
hasrefl = (sintens(nd.rdiff) > FTINY); |
261 |
> |
hastrans = (sintens(nd.tdiff) > FTINY); |
262 |
|
/* load cal file */ |
263 |
|
nd.dp = NULL; |
264 |
< |
mf = getfunc(m, 9, 0x3f, 0); |
264 |
> |
mf = getfunc(m, 9, 0x3F, 0); |
265 |
|
/* compute transmitted ray */ |
266 |
|
setbrdfunc(&nd); |
267 |
|
errno = 0; |
268 |
< |
setcolor(ctmp, evalue(mf->ep[3]), |
268 |
> |
setscolor(sctmp, evalue(mf->ep[3]), |
269 |
|
evalue(mf->ep[4]), |
270 |
|
evalue(mf->ep[5])); |
271 |
|
if ((errno == EDOM) | (errno == ERANGE)) |
272 |
|
objerror(m, WARNING, "compute error"); |
273 |
< |
else if (rayorigin(&sr, TRANS, r, ctmp) == 0) { |
274 |
< |
if (!(r->crtype & SHADOW) && hastexture) { |
273 |
> |
else if (rayorigin(&sr, TRANS, r, sctmp) == 0) { |
274 |
> |
if (hastexture && !(r->crtype & (SHADOW|AMBIENT))) { |
275 |
|
/* perturb direction */ |
276 |
< |
VSUM(sr.rdir, r->rdir, r->pert, -.75); |
276 |
> |
VSUB(sr.rdir, r->rdir, r->pert); |
277 |
|
if (normalize(sr.rdir) == 0.0) { |
278 |
|
objerror(m, WARNING, "illegal perturbation"); |
279 |
|
VCOPY(sr.rdir, r->rdir); |
282 |
|
VCOPY(sr.rdir, r->rdir); |
283 |
|
} |
284 |
|
rayvalue(&sr); |
285 |
< |
multcolor(sr.rcol, sr.rcoef); |
286 |
< |
addcolor(r->rcol, sr.rcol); |
287 |
< |
if (!hastexture) { |
288 |
< |
transtest = 2.0*bright(sr.rcol); |
289 |
< |
transdist = r->rot + sr.rt; |
288 |
< |
} |
285 |
> |
smultscolor(sr.rcol, sr.rcoef); |
286 |
> |
saddscolor(r->rcol, sr.rcol); |
287 |
> |
if ((!hastexture || r->crtype & (SHADOW|AMBIENT)) && |
288 |
> |
nd.tspec > pbright(nd.tdiff) + pbright(nd.rdiff)) |
289 |
> |
r->rxt = r->rot + raydistance(&sr); |
290 |
|
} |
291 |
|
if (r->crtype & SHADOW) /* the rest is shadow */ |
292 |
|
return(1); |
293 |
+ |
|
294 |
|
/* compute reflected ray */ |
295 |
|
setbrdfunc(&nd); |
296 |
|
errno = 0; |
297 |
< |
setcolor(ctmp, evalue(mf->ep[0]), |
297 |
> |
setscolor(sctmp, evalue(mf->ep[0]), |
298 |
|
evalue(mf->ep[1]), |
299 |
|
evalue(mf->ep[2])); |
300 |
|
if ((errno == EDOM) | (errno == ERANGE)) |
301 |
|
objerror(m, WARNING, "compute error"); |
302 |
< |
else if (rayorigin(&sr, REFLECTED, r, ctmp) == 0) { |
302 |
> |
else if (rayorigin(&sr, REFLECTED, r, sctmp) == 0) { |
303 |
|
VSUM(sr.rdir, r->rdir, nd.pnorm, 2.*nd.pdot); |
304 |
|
checknorm(sr.rdir); |
305 |
|
rayvalue(&sr); |
306 |
< |
multcolor(sr.rcol, sr.rcoef); |
307 |
< |
addcolor(r->rcol, sr.rcol); |
308 |
< |
if (!hastexture && r->ro != NULL && isflat(r->ro->otype)) { |
309 |
< |
mirtest = 2.0*bright(sr.rcol); |
310 |
< |
mirdist = r->rot + sr.rt; |
311 |
< |
} |
306 |
> |
smultscolor(sr.rcol, sr.rcoef); |
307 |
> |
copyscolor(r->mcol, sr.rcol); |
308 |
> |
saddscolor(r->rcol, sr.rcol); |
309 |
> |
r->rmt = r->rot; |
310 |
> |
if (r->ro != NULL && isflat(r->ro->otype) && |
311 |
> |
!hastexture | (r->crtype & AMBIENT)) |
312 |
> |
r->rmt += raydistance(&sr); |
313 |
|
} |
314 |
|
/* compute ambient */ |
315 |
|
if (hasrefl) { |
316 |
< |
if (!hitfront) |
317 |
< |
flipsurface(r); |
318 |
< |
copycolor(ctmp, nd.rdiff); |
316 |
< |
multambient(ctmp, r, nd.pnorm); |
317 |
< |
addcolor(r->rcol, ctmp); /* add to returned color */ |
318 |
< |
if (!hitfront) |
319 |
< |
flipsurface(r); |
316 |
> |
copyscolor(sctmp, nd.rdiff); |
317 |
> |
multambient(sctmp, r, nd.pnorm); |
318 |
> |
saddscolor(r->rcol, sctmp); /* add to returned color */ |
319 |
|
} |
320 |
|
if (hastrans) { /* from other side */ |
322 |
– |
if (hitfront) |
323 |
– |
flipsurface(r); |
321 |
|
vtmp[0] = -nd.pnorm[0]; |
322 |
|
vtmp[1] = -nd.pnorm[1]; |
323 |
|
vtmp[2] = -nd.pnorm[2]; |
324 |
< |
copycolor(ctmp, nd.tdiff); |
325 |
< |
multambient(ctmp, r, vtmp); |
326 |
< |
addcolor(r->rcol, ctmp); |
330 |
< |
if (hitfront) |
331 |
< |
flipsurface(r); |
324 |
> |
copyscolor(sctmp, nd.tdiff); |
325 |
> |
multambient(sctmp, r, vtmp); |
326 |
> |
saddscolor(r->rcol, sctmp); |
327 |
|
} |
328 |
|
if (hasrefl | hastrans || m->oargs.sarg[6][0] != '0') |
329 |
|
direct(r, dirbrdf, &nd); /* add direct component */ |
330 |
|
|
336 |
– |
d = bright(r->rcol); /* set effective distance */ |
337 |
– |
if (transtest > d) |
338 |
– |
r->rt = transdist; |
339 |
– |
else if (mirtest > d) |
340 |
– |
r->rt = mirdist; |
341 |
– |
|
331 |
|
return(1); |
332 |
|
} |
333 |
|
|
340 |
|
) |
341 |
|
{ |
342 |
|
BRDFDAT nd; |
343 |
< |
COLOR ctmp; |
343 |
> |
SCOLOR sctmp; |
344 |
|
FVECT vtmp; |
345 |
|
double dtmp; |
346 |
|
/* always a shadow */ |
352 |
|
objerror(m, USER, "bad # arguments"); |
353 |
|
/* check for back side */ |
354 |
|
if (r->rod < 0.0) { |
355 |
< |
if (!backvis && m->otype != MAT_TFUNC |
367 |
< |
&& m->otype != MAT_TDATA) { |
355 |
> |
if (!backvis) { |
356 |
|
raytrans(r); |
357 |
|
return(1); |
358 |
|
} |
364 |
|
nd.mp = m; |
365 |
|
nd.pr = r; |
366 |
|
/* get material color */ |
367 |
< |
setcolor(nd.mcolor, m->oargs.farg[0], |
367 |
> |
setscolor(nd.mcolor, m->oargs.farg[0], |
368 |
|
m->oargs.farg[1], |
369 |
|
m->oargs.farg[2]); |
370 |
|
/* get specular component */ |
374 |
|
nd.trans = m->oargs.farg[4]*(1.0 - nd.rspec); |
375 |
|
nd.tspec = nd.trans * m->oargs.farg[5]; |
376 |
|
dtmp = nd.trans - nd.tspec; |
377 |
< |
setcolor(nd.tdiff, dtmp, dtmp, dtmp); |
377 |
> |
setscolor(nd.tdiff, dtmp, dtmp, dtmp); |
378 |
|
} else { |
379 |
|
nd.tspec = nd.trans = 0.0; |
380 |
< |
setcolor(nd.tdiff, 0.0, 0.0, 0.0); |
380 |
> |
scolorblack(nd.tdiff); |
381 |
|
} |
382 |
|
/* compute reflectance */ |
383 |
|
dtmp = 1.0 - nd.trans - nd.rspec; |
384 |
< |
setcolor(nd.rdiff, dtmp, dtmp, dtmp); |
384 |
> |
setscolor(nd.rdiff, dtmp, dtmp, dtmp); |
385 |
|
nd.pdot = raynormal(nd.pnorm, r); /* perturb normal */ |
386 |
< |
multcolor(nd.mcolor, r->pcol); /* modify material color */ |
387 |
< |
multcolor(nd.rdiff, nd.mcolor); |
388 |
< |
multcolor(nd.tdiff, nd.mcolor); |
386 |
> |
smultscolor(nd.mcolor, r->pcol); /* modify material color */ |
387 |
> |
smultscolor(nd.rdiff, nd.mcolor); |
388 |
> |
smultscolor(nd.tdiff, nd.mcolor); |
389 |
|
/* load auxiliary files */ |
390 |
|
if (hasdata(m->otype)) { |
391 |
|
nd.dp = getdata(m->oargs.sarg[1]); |
396 |
|
} |
397 |
|
/* compute ambient */ |
398 |
|
if (nd.trans < 1.0-FTINY) { |
399 |
< |
copycolor(ctmp, nd.mcolor); /* modified by material color */ |
400 |
< |
scalecolor(ctmp, 1.0-nd.trans); |
401 |
< |
multambient(ctmp, r, nd.pnorm); |
402 |
< |
addcolor(r->rcol, ctmp); /* add to returned color */ |
399 |
> |
copyscolor(sctmp, nd.mcolor); /* modified by material color */ |
400 |
> |
scalescolor(sctmp, 1.0-nd.trans); |
401 |
> |
multambient(sctmp, r, nd.pnorm); |
402 |
> |
saddscolor(r->rcol, sctmp); /* add to returned color */ |
403 |
|
} |
404 |
< |
if (nd.trans > FTINY) { /* from other side */ |
417 |
< |
flipsurface(r); |
404 |
> |
if (nd.trans > FTINY) { /* from other side */ |
405 |
|
vtmp[0] = -nd.pnorm[0]; |
406 |
|
vtmp[1] = -nd.pnorm[1]; |
407 |
|
vtmp[2] = -nd.pnorm[2]; |
408 |
< |
copycolor(ctmp, nd.mcolor); |
409 |
< |
scalecolor(ctmp, nd.trans); |
410 |
< |
multambient(ctmp, r, vtmp); |
411 |
< |
addcolor(r->rcol, ctmp); |
425 |
< |
flipsurface(r); |
408 |
> |
copyscolor(sctmp, nd.mcolor); |
409 |
> |
scalescolor(sctmp, nd.trans); |
410 |
> |
multambient(sctmp, r, vtmp); |
411 |
> |
saddscolor(r->rcol, sctmp); |
412 |
|
} |
413 |
|
/* add direct component */ |
414 |
|
direct(r, dirbrdf, &nd); |
423 |
|
) |
424 |
|
{ |
425 |
|
FVECT vec; |
426 |
+ |
COLOR ctmp; |
427 |
|
|
428 |
|
if (setfunc(np->mp, np->pr) == 0) |
429 |
|
return(0); /* it's OK, setfunc says we're done */ |
430 |
|
/* else (re)assign special variables */ |
431 |
|
multv3(vec, np->pnorm, funcxf.xfm); |
432 |
< |
varset("NxP", '=', vec[0]/funcxf.sca); |
433 |
< |
varset("NyP", '=', vec[1]/funcxf.sca); |
434 |
< |
varset("NzP", '=', vec[2]/funcxf.sca); |
435 |
< |
varset("RdotP", '=', np->pdot <= -1.0 ? -1.0 : |
432 |
> |
varset("NxP`", '=', vec[0]/funcxf.sca); |
433 |
> |
varset("NyP`", '=', vec[1]/funcxf.sca); |
434 |
> |
varset("NzP`", '=', vec[2]/funcxf.sca); |
435 |
> |
varset("RdotP`", '=', np->pdot <= -1.0 ? -1.0 : |
436 |
|
np->pdot >= 1.0 ? 1.0 : np->pdot); |
437 |
< |
varset("CrP", '=', colval(np->mcolor,RED)); |
438 |
< |
varset("CgP", '=', colval(np->mcolor,GRN)); |
439 |
< |
varset("CbP", '=', colval(np->mcolor,BLU)); |
437 |
> |
scolor_color(ctmp, np->mcolor); /* should use scolor_rgb()? */ |
438 |
> |
varset("CrP", '=', colval(ctmp,RED)); |
439 |
> |
varset("CgP", '=', colval(ctmp,GRN)); |
440 |
> |
varset("CbP", '=', colval(ctmp,BLU)); |
441 |
|
return(1); |
442 |
|
} |