33 |
|
* |
34 |
|
* Up to five real arguments may be given for MAT_MIST: |
35 |
|
* |
36 |
< |
* [ext_r ext_g ext_b [albedo [gecc]]] |
36 |
> |
* [ext_r ext_g ext_b [albedo_r albedo_g albedo_b [gecc]]] |
37 |
|
* |
38 |
|
* The primaries indicate medium extinction per unit length (absorption |
39 |
|
* plus scattering), which is added to the global extinction coefficient, set |
44 |
|
* scattering. A value approaching 1 indicates strong forward scattering. |
45 |
|
*/ |
46 |
|
|
47 |
+ |
#ifndef MAXSLIST |
48 |
+ |
#define MAXSLIST 32 /* maximum sources to check */ |
49 |
+ |
#endif |
50 |
+ |
|
51 |
|
#define RELAYDELIM '>' /* relay delimiter character */ |
52 |
|
|
53 |
|
extern COLOR cextinction; /* global coefficient of extinction */ |
54 |
< |
extern double salbedo; /* global scattering albedo */ |
54 |
> |
extern COLOR salbedo; /* global scattering albedo */ |
55 |
|
extern double seccg; /* global scattering eccentricity */ |
56 |
|
|
57 |
|
|
170 |
|
p.slights[0] = 0; |
171 |
|
if (r->rod > 0.) { /* entering ray */ |
172 |
|
addcolor(p.cext, mext); |
173 |
< |
if (m->oargs.nfargs > 3) |
174 |
< |
p.albedo = m->oargs.farg[3]; |
175 |
< |
if (m->oargs.nfargs > 4) |
176 |
< |
p.gecc = m->oargs.farg[4]; |
173 |
> |
if (m->oargs.nfargs > 5) |
174 |
> |
setcolor(p.albedo, m->oargs.farg[3], |
175 |
> |
m->oargs.farg[4], m->oargs.farg[5]); |
176 |
> |
if (m->oargs.nfargs > 6) |
177 |
> |
p.gecc = m->oargs.farg[6]; |
178 |
|
add2slist(&p, myslist); /* add to list */ |
179 |
|
} else { /* leaving ray */ |
180 |
|
if (myslist != NULL) { /* delete from list */ |
186 |
|
p.slights[++i] = p.slights[j]; |
187 |
|
if (p.slights[0] - i < myslist[0]) { /* fix old */ |
188 |
|
addcolor(r->cext, mext); |
189 |
< |
if (m->oargs.nfargs > 3) |
190 |
< |
r->albedo = m->oargs.farg[3]; |
191 |
< |
if (m->oargs.nfargs > 4) |
192 |
< |
r->gecc = m->oargs.farg[4]; |
189 |
> |
if (m->oargs.nfargs > 5) |
190 |
> |
setcolor(r->albedo, m->oargs.farg[3], |
191 |
> |
m->oargs.farg[4], m->oargs.farg[5]); |
192 |
> |
if (m->oargs.nfargs > 6) |
193 |
> |
r->gecc = m->oargs.farg[6]; |
194 |
|
add2slist(r, myslist); |
195 |
|
} |
196 |
|
p.slights[0] = i; |
205 |
|
colval(cextinction,BLU)) |
206 |
|
be = colval(cextinction,BLU); |
207 |
|
setcolor(p.cext, re, ge, be); |
208 |
< |
if (m->oargs.nfargs > 3) |
209 |
< |
p.albedo = salbedo; |
210 |
< |
if (m->oargs.nfargs > 4) |
208 |
> |
if (m->oargs.nfargs > 5) |
209 |
> |
copycolor(p.albedo, salbedo); |
210 |
> |
if (m->oargs.nfargs > 6) |
211 |
|
p.gecc = seccg; |
212 |
|
} |
213 |
|
rayvalue(&p); /* calls rayparticipate() */ |