| 38 |
|
OBJREC *mp; /* material pointer */ |
| 39 |
|
RAY *rp; /* ray pointer */ |
| 40 |
|
short specfl; /* specularity flags, defined above */ |
| 41 |
< |
COLOR mcolor; /* color of this material */ |
| 42 |
< |
COLOR scolor; /* color of specular component */ |
| 41 |
> |
SCOLOR mcolor; /* color of this material */ |
| 42 |
> |
SCOLOR scolor; /* color of specular component */ |
| 43 |
|
FVECT u, v; /* u and v vectors orienting anisotropy */ |
| 44 |
|
double u_power; /* u power */ |
| 45 |
|
double v_power; /* v power */ |
| 65 |
|
|
| 66 |
|
static void |
| 67 |
|
dirashik( /* compute source contribution */ |
| 68 |
< |
COLOR cval, /* returned coefficient */ |
| 68 |
> |
SCOLOR scval, /* returned coefficient */ |
| 69 |
|
void *nnp, /* material data */ |
| 70 |
|
FVECT ldir, /* light source direction */ |
| 71 |
|
double omega /* light source size */ |
| 75 |
|
double ldot; |
| 76 |
|
double dtmp, dtmp1, dtmp2; |
| 77 |
|
FVECT h; |
| 78 |
< |
COLOR ctmp; |
| 78 |
> |
SCOLOR sctmp; |
| 79 |
|
|
| 80 |
< |
setcolor(cval, 0.0, 0.0, 0.0); |
| 80 |
> |
scolorblack(scval); |
| 81 |
|
|
| 82 |
|
ldot = DOT(np->pnorm, ldir); |
| 83 |
|
|
| 84 |
< |
if (ldot < 0.0) |
| 84 |
> |
if (ldot <= FTINY) |
| 85 |
|
return; /* wrong side */ |
| 86 |
|
|
| 87 |
|
/* |
| 88 |
|
* Compute and add diffuse reflected component to returned |
| 89 |
|
* color. |
| 90 |
|
*/ |
| 91 |
< |
copycolor(ctmp, np->mcolor); |
| 91 |
> |
copyscolor(sctmp, np->mcolor); |
| 92 |
|
dtmp = ldot * omega * (1.0/PI) * (1. - schlick_fres(ldot)); |
| 93 |
< |
scalecolor(ctmp, dtmp); |
| 94 |
< |
addcolor(cval, ctmp); |
| 93 |
> |
scalescolor(sctmp, dtmp); |
| 94 |
> |
saddscolor(scval, sctmp); |
| 95 |
|
|
| 96 |
|
if (!(np->specfl & SPA_REFL) || ambRayInPmap(np->rp)) |
| 97 |
|
return; |
| 113 |
|
dtmp /= 8.*PI * DOT(ldir,h) * MAX(ldot,np->pdot); |
| 114 |
|
/* worth using? */ |
| 115 |
|
if (dtmp > FTINY) { |
| 116 |
< |
copycolor(ctmp, np->scolor); |
| 116 |
> |
copyscolor(sctmp, np->scolor); |
| 117 |
|
dtmp *= ldot * omega; |
| 118 |
< |
scalecolor(ctmp, dtmp); |
| 119 |
< |
addcolor(cval, ctmp); |
| 118 |
> |
scalescolor(sctmp, dtmp); |
| 119 |
> |
saddscolor(scval, sctmp); |
| 120 |
|
} |
| 121 |
|
} |
| 122 |
|
|
| 128 |
|
) |
| 129 |
|
{ |
| 130 |
|
ASHIKDAT nd; |
| 131 |
< |
COLOR ctmp; |
| 131 |
> |
SCOLOR sctmp; |
| 132 |
|
double fres; |
| 133 |
|
int i; |
| 134 |
|
/* easy shadow test */ |
| 150 |
|
/* get material color */ |
| 151 |
|
nd.mp = m; |
| 152 |
|
nd.rp = r; |
| 153 |
< |
setcolor(nd.mcolor, m->oargs.farg[0], |
| 153 |
> |
setscolor(nd.mcolor, m->oargs.farg[0], |
| 154 |
|
m->oargs.farg[1], |
| 155 |
|
m->oargs.farg[2]); |
| 156 |
< |
setcolor(nd.scolor, m->oargs.farg[3], |
| 156 |
> |
setscolor(nd.scolor, m->oargs.farg[3], |
| 157 |
|
m->oargs.farg[4], |
| 158 |
|
m->oargs.farg[5]); |
| 159 |
|
/* get specular power */ |
| 164 |
|
nd.pdot = raynormal(nd.pnorm, r); /* perturb normal */ |
| 165 |
|
if (nd.pdot < .001) |
| 166 |
|
nd.pdot = .001; /* non-zero for dirashik() */ |
| 167 |
< |
multcolor(nd.mcolor, r->pcol); /* modify diffuse color */ |
| 167 |
> |
smultscolor(nd.mcolor, r->pcol); /* modify diffuse color */ |
| 168 |
|
|
| 169 |
< |
if (bright(nd.scolor) > FTINY) { /* adjust specular color */ |
| 169 |
> |
if (sintens(nd.scolor) > FTINY) { /* adjust specular color */ |
| 170 |
|
nd.specfl |= SPA_REFL; |
| 171 |
|
/* check threshold */ |
| 172 |
< |
if (specthresh >= bright(nd.scolor)-FTINY) |
| 172 |
> |
if (specthresh >= pbright(nd.scolor)-FTINY) |
| 173 |
|
nd.specfl |= SPA_RBLT; |
| 174 |
|
fres = schlick_fres(nd.pdot); /* Schick's Fresnel approx */ |
| 175 |
< |
for (i = 0; i < 3; i++) |
| 176 |
< |
colval(nd.scolor,i) += (1.-colval(nd.scolor,i))*fres; |
| 175 |
> |
for (i = NCSAMP; i--; ) |
| 176 |
> |
nd.scolor[i] += (1.-nd.scolor[i])*fres; |
| 177 |
|
} |
| 178 |
|
if (r->ro != NULL && isflat(r->ro->otype)) |
| 179 |
|
nd.specfl |= SPA_FLAT; |
| 183 |
|
if ((nd.specfl & (SPA_REFL|SPA_RBLT)) == SPA_REFL) |
| 184 |
|
ashiksamp(&nd); |
| 185 |
|
/* diffuse interreflection */ |
| 186 |
< |
if (bright(nd.mcolor) > FTINY) { |
| 187 |
< |
copycolor(ctmp, nd.mcolor); /* modified by material color */ |
| 186 |
> |
if (sintens(nd.mcolor) > FTINY) { |
| 187 |
> |
copyscolor(sctmp, nd.mcolor); /* modified by material color */ |
| 188 |
|
if (nd.specfl & SPA_RBLT) /* add in specular as well? */ |
| 189 |
< |
addcolor(ctmp, nd.scolor); |
| 190 |
< |
multambient(ctmp, r, nd.pnorm); |
| 191 |
< |
addcolor(r->rcol, ctmp); /* add to returned color */ |
| 189 |
> |
saddscolor(sctmp, nd.scolor); |
| 190 |
> |
multambient(sctmp, r, nd.pnorm); |
| 191 |
> |
saddscolor(r->rcol, sctmp); /* add to returned color */ |
| 192 |
|
} |
| 193 |
|
direct(r, dirashik, &nd); /* add direct component */ |
| 194 |
|
|
| 238 |
|
int maxiter, ntrials, nstarget, nstaken; |
| 239 |
|
int i; |
| 240 |
|
|
| 241 |
< |
if (rayorigin(&sr, SPECULAR, np->rp, np->scolor) < 0) |
| 241 |
> |
if (rayorigin(&sr, RSPECULAR, np->rp, np->scolor) < 0) |
| 242 |
|
return; |
| 243 |
|
|
| 244 |
|
nstarget = 1; |
| 248 |
|
nstarget = sr.rweight/minweight; |
| 249 |
|
if (nstarget > 1) { |
| 250 |
|
dtmp = 1./nstarget; |
| 251 |
< |
scalecolor(sr.rcoef, dtmp); |
| 251 |
> |
scalescolor(sr.rcoef, dtmp); |
| 252 |
|
sr.rweight *= dtmp; |
| 253 |
|
} else |
| 254 |
|
nstarget = 1; |
| 284 |
|
continue; |
| 285 |
|
checknorm(sr.rdir); |
| 286 |
|
rayvalue(&sr); |
| 287 |
< |
multcolor(sr.rcol, sr.rcoef); |
| 288 |
< |
addcolor(np->rp->rcol, sr.rcol); |
| 287 |
> |
smultscolor(sr.rcol, sr.rcoef); |
| 288 |
> |
saddscolor(np->rp->rcol, sr.rcol); |
| 289 |
|
++nstaken; |
| 290 |
|
} |
| 291 |
|
ndims--; |
