55 |
|
COLOR trans, refl; |
56 |
|
int hastexture, hastrans; |
57 |
|
double d, r1e, r1m; |
58 |
– |
double transtest, transdist; |
59 |
– |
double mirtest, mirdist; |
58 |
|
RAY p; |
59 |
|
int i; |
60 |
|
|
61 |
|
/* PMAP: skip refracted shadow or ambient ray if accounted for in |
62 |
|
photon map */ |
63 |
< |
if (shadowRayInPmap(r) || ambRayInPmap(r)) |
63 |
> |
if (shadowRayInPmap(r) || ambRayInPmap(r)) |
64 |
|
return(1); |
65 |
|
/* check arguments */ |
66 |
|
if (m->oargs.nfargs == 3) |
86 |
|
raytexture(r, m->omod); |
87 |
|
if (r->rod < 0.0) /* reorient if necessary */ |
88 |
|
flipsurface(r); |
91 |
– |
mirtest = transtest = 0; |
92 |
– |
mirdist = transdist = r->rot; |
89 |
|
/* perturb normal */ |
90 |
|
if ( (hastexture = (DOT(r->pert,r->pert) > FTINY*FTINY)) ) { |
91 |
|
pdot = raynormal(pnorm, r); |
126 |
|
} |
127 |
|
} else { |
128 |
|
VCOPY(p.rdir, r->rdir); |
133 |
– |
transtest = 2; |
129 |
|
} |
130 |
|
rayvalue(&p); |
131 |
|
multcolor(p.rcol, p.rcoef); |
132 |
|
addcolor(r->rcol, p.rcol); |
133 |
< |
transtest *= bright(p.rcol); |
134 |
< |
transdist = r->rot + p.rt; |
133 |
> |
if (!hastexture || r->crtype & (SHADOW|AMBIENT)) |
134 |
> |
r->rxt = r->rot + raydistance(&p); |
135 |
|
} |
136 |
|
} |
137 |
< |
if (r->crtype & SHADOW) { /* skip reflected ray */ |
143 |
< |
r->rt = transdist; |
137 |
> |
if (r->crtype & SHADOW) /* skip reflected ray */ |
138 |
|
return(1); |
145 |
– |
} |
139 |
|
/* compute reflectance */ |
140 |
|
for (i = 0; i < 3; i++) { |
141 |
|
d = colval(mcolor, i); |
149 |
|
checknorm(p.rdir); |
150 |
|
rayvalue(&p); |
151 |
|
multcolor(p.rcol, p.rcoef); |
152 |
+ |
copycolor(r->mcol, p.rcol); |
153 |
|
addcolor(r->rcol, p.rcol); |
154 |
+ |
r->rmt = r->rot; |
155 |
|
if (r->ro != NULL && isflat(r->ro->otype) && |
156 |
< |
!hastexture | (r->crtype & AMBIENT)) { |
157 |
< |
mirtest = 2.0*bright(p.rcol); |
163 |
< |
mirdist = r->rot + p.rt; |
164 |
< |
} |
156 |
> |
!hastexture | (r->crtype & AMBIENT)) |
157 |
> |
r->rmt += raydistance(&p); |
158 |
|
} |
166 |
– |
/* check distance */ |
167 |
– |
d = bright(r->rcol); |
168 |
– |
if (transtest > d) |
169 |
– |
r->rt = transdist; |
170 |
– |
else if (mirtest > d) |
171 |
– |
r->rt = mirdist; |
159 |
|
return(1); |
160 |
|
} |