| 14 |
|
|
| 15 |
|
#include "otypes.h" |
| 16 |
|
|
| 17 |
+ |
#include "func.h" |
| 18 |
+ |
|
| 19 |
|
/* |
| 20 |
|
* Arguments to this material include the color and specularity. |
| 21 |
|
* String arguments include the reflection function and files. |
| 60 |
|
* CrP, CgP, CbP - perturbed material color |
| 61 |
|
*/ |
| 62 |
|
|
| 61 |
– |
extern double funvalue(), varvalue(); |
| 62 |
– |
extern XF funcxf; |
| 63 |
– |
|
| 63 |
|
typedef struct { |
| 64 |
|
OBJREC *mp; /* material pointer */ |
| 65 |
|
RAY *pr; /* intersected ray */ |
| 85 |
|
double dtmp; |
| 86 |
|
COLOR ctmp; |
| 87 |
|
FVECT ldx; |
| 88 |
< |
double pt[MAXDIM]; |
| 88 |
> |
double lddx[3], pt[MAXDIM]; |
| 89 |
|
register char **sa; |
| 90 |
|
register int i; |
| 91 |
|
|
| 127 |
|
/* transform light vector */ |
| 128 |
|
multv3(ldx, ldir, funcxf.xfm); |
| 129 |
|
for (i = 0; i < 3; i++) |
| 130 |
< |
ldx[i] /= funcxf.sca; |
| 130 |
> |
lddx[i] = ldx[i]/funcxf.sca; |
| 131 |
|
/* compute BRTDF */ |
| 132 |
|
if (np->mp->otype == MAT_BRTDF) { |
| 133 |
< |
colval(ctmp,RED) = funvalue(sa[6], 3, ldx); |
| 133 |
> |
colval(ctmp,RED) = funvalue(sa[6], 3, lddx); |
| 134 |
|
if (!strcmp(sa[7],sa[6])) |
| 135 |
|
colval(ctmp,GRN) = colval(ctmp,RED); |
| 136 |
|
else |
| 137 |
< |
colval(ctmp,GRN) = funvalue(sa[7], 3, ldx); |
| 137 |
> |
colval(ctmp,GRN) = funvalue(sa[7], 3, lddx); |
| 138 |
|
if (!strcmp(sa[8],sa[6])) |
| 139 |
|
colval(ctmp,BLU) = colval(ctmp,RED); |
| 140 |
|
else if (!strcmp(sa[8],sa[7])) |
| 141 |
|
colval(ctmp,BLU) = colval(ctmp,GRN); |
| 142 |
|
else |
| 143 |
< |
colval(ctmp,BLU) = funvalue(sa[8], 3, ldx); |
| 143 |
> |
colval(ctmp,BLU) = funvalue(sa[8], 3, lddx); |
| 144 |
|
dtmp = bright(ctmp); |
| 145 |
|
} else if (np->dp == NULL) { |
| 146 |
< |
dtmp = funvalue(sa[0], 3, ldx); |
| 146 |
> |
dtmp = funvalue(sa[0], 3, lddx); |
| 147 |
|
setcolor(ctmp, dtmp, dtmp, dtmp); |
| 148 |
|
} else { |
| 149 |
|
for (i = 0; i < np->dp->nd; i++) |
| 150 |
< |
pt[i] = funvalue(sa[3+i], 3, ldx); |
| 150 |
> |
pt[i] = funvalue(sa[3+i], 3, lddx); |
| 151 |
|
dtmp = datavalue(np->dp, pt); |
| 152 |
|
dtmp = funvalue(sa[0], 1, &dtmp); |
| 153 |
|
setcolor(ctmp, dtmp, dtmp, dtmp); |
| 154 |
|
} |
| 155 |
< |
if (errno) |
| 156 |
< |
goto computerr; |
| 155 |
> |
if (errno) { |
| 156 |
> |
objerror(np->mp, WARNING, "compute error"); |
| 157 |
> |
return; |
| 158 |
> |
} |
| 159 |
|
if (dtmp <= FTINY) |
| 160 |
|
return; |
| 161 |
|
if (ldot > 0.0) { |
| 177 |
|
scalecolor(ctmp, dtmp); |
| 178 |
|
addcolor(cval, ctmp); |
| 179 |
|
} |
| 179 |
– |
return; |
| 180 |
– |
computerr: |
| 181 |
– |
objerror(np->mp, WARNING, "compute error"); |
| 182 |
– |
return; |
| 180 |
|
} |
| 181 |
|
|
| 182 |
|
|
| 189 |
|
double transtest, transdist; |
| 190 |
|
COLOR ctmp; |
| 191 |
|
double dtmp, tspect, rspecr; |
| 192 |
+ |
MFUNC *mf; |
| 193 |
|
register int i; |
| 194 |
|
/* check arguments */ |
| 195 |
|
switch (m->otype) { |
| 236 |
|
multcolor(nd.mcolor, r->pcol); /* modify material color */ |
| 237 |
|
transtest = 0; |
| 238 |
|
/* load auxiliary files */ |
| 239 |
< |
if (m->otype == MAT_PDATA || m->otype == MAT_MDATA |
| 242 |
< |
|| m->otype == MAT_TDATA) { |
| 239 |
> |
if (hasdata(m->otype)) { |
| 240 |
|
nd.dp = getdata(m->oargs.sarg[1]); |
| 241 |
< |
for (i = 3; i < m->oargs.nsargs; i++) |
| 242 |
< |
if (m->oargs.sarg[i][0] == '-') |
| 246 |
< |
break; |
| 247 |
< |
if (i-3 != nd.dp->nd) |
| 248 |
< |
objerror(m, USER, "dimension error"); |
| 249 |
< |
funcfile(m->oargs.sarg[2]); |
| 241 |
> |
i = (1 << nd.dp->nd) - 1; |
| 242 |
> |
mf = getfunc(m, 2, i<<3, 0); |
| 243 |
|
} else if (m->otype == MAT_BRTDF) { |
| 244 |
|
nd.dp = NULL; |
| 245 |
< |
funcfile(m->oargs.sarg[9]); |
| 245 |
> |
mf = getfunc(m, 9, 0x3f, 0); |
| 246 |
|
} else { |
| 247 |
|
nd.dp = NULL; |
| 248 |
< |
funcfile(m->oargs.sarg[1]); |
| 248 |
> |
mf = getfunc(m, 1, 0, 0); |
| 249 |
|
} |
| 250 |
|
/* set special variables */ |
| 251 |
|
setbrdfunc(&nd); |
| 254 |
|
if (m->otype == MAT_BRTDF && nd.tspec > FTINY) { |
| 255 |
|
RAY sr; |
| 256 |
|
errno = 0; |
| 257 |
< |
setcolor(ctmp, varvalue(m->oargs.sarg[3]), |
| 258 |
< |
varvalue(m->oargs.sarg[4]), |
| 259 |
< |
varvalue(m->oargs.sarg[5])); |
| 257 |
> |
setcolor(ctmp, evalue(mf->ep[3]), |
| 258 |
> |
evalue(mf->ep[4]), |
| 259 |
> |
evalue(mf->ep[5])); |
| 260 |
|
scalecolor(ctmp, nd.trans); |
| 261 |
|
if (errno) |
| 262 |
|
objerror(m, WARNING, "compute error"); |
| 263 |
|
else if ((tspect = bright(ctmp)) > FTINY && |
| 264 |
|
rayorigin(&sr, r, TRANS, tspect) == 0) { |
| 265 |
< |
if (DOT(r->pert,r->pert) > FTINY*FTINY) { |
| 265 |
> |
if (!(r->crtype & SHADOW) && |
| 266 |
> |
DOT(r->pert,r->pert) > FTINY*FTINY) { |
| 267 |
|
for (i = 0; i < 3; i++) /* perturb direction */ |
| 268 |
|
sr.rdir[i] = r->rdir[i] - |
| 269 |
|
.75*r->pert[i]; |
| 270 |
< |
normalize(sr.rdir); |
| 270 |
> |
if (normalize(sr.rdir) == 0.0) { |
| 271 |
> |
objerror(m, WARNING, "illegal perturbation"); |
| 272 |
> |
VCOPY(sr.rdir, r->rdir); |
| 273 |
> |
} |
| 274 |
|
} else { |
| 275 |
|
VCOPY(sr.rdir, r->rdir); |
| 276 |
|
transtest = 2; |
| 289 |
|
if (m->otype == MAT_BRTDF && nd.rspec > FTINY) { |
| 290 |
|
RAY sr; |
| 291 |
|
errno = 0; |
| 292 |
< |
setcolor(ctmp, varvalue(m->oargs.sarg[0]), |
| 293 |
< |
varvalue(m->oargs.sarg[1]), |
| 294 |
< |
varvalue(m->oargs.sarg[2])); |
| 292 |
> |
setcolor(ctmp, evalue(mf->ep[0]), |
| 293 |
> |
evalue(mf->ep[1]), |
| 294 |
> |
evalue(mf->ep[2])); |
| 295 |
|
if (errno) |
| 296 |
|
objerror(m, WARNING, "compute error"); |
| 297 |
|
else if ((rspecr = bright(ctmp)) > FTINY && |
