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 |
|
|
106 |
|
for (i = sl[0]; i > 0; i--) |
107 |
|
if (!inslist(r->slights, sl[i])) { |
108 |
|
if (r->slights[0] >= MAXSLIST) |
109 |
< |
error(USER, "scattering source list overflow"); |
109 |
> |
error(INTERNAL, |
110 |
> |
"scattering source list overflow"); |
111 |
|
r->slights[++r->slights[0]] = sl[i]; |
112 |
|
} |
113 |
|
} |
124 |
|
double re, ge, be; |
125 |
|
register int i, j; |
126 |
|
/* check arguments */ |
127 |
< |
if (m->oargs.nfargs > 5) |
127 |
> |
if (m->oargs.nfargs > 7) |
128 |
|
objerror(m, USER, "bad arguments"); |
129 |
|
/* get source indices */ |
130 |
|
if (m->oargs.nsargs > 0 && (myslist = (int *)m->os) == NULL) { |
131 |
|
if (m->oargs.nsargs > MAXSLIST) |
132 |
< |
objerror(m, USER, "too many sources in list"); |
132 |
> |
objerror(m, INTERNAL, "too many sources in list"); |
133 |
|
myslist = (int *)malloc((m->oargs.nsargs+1)*sizeof(int)); |
134 |
|
if (myslist == NULL) |
135 |
|
goto memerr; |
171 |
|
p.slights[0] = 0; |
172 |
|
if (r->rod > 0.) { /* entering ray */ |
173 |
|
addcolor(p.cext, mext); |
174 |
< |
if (m->oargs.nfargs > 3) |
175 |
< |
p.albedo = m->oargs.farg[3]; |
176 |
< |
if (m->oargs.nfargs > 4) |
177 |
< |
p.gecc = m->oargs.farg[4]; |
174 |
> |
if (m->oargs.nfargs > 5) |
175 |
> |
setcolor(p.albedo, m->oargs.farg[3], |
176 |
> |
m->oargs.farg[4], m->oargs.farg[5]); |
177 |
> |
if (m->oargs.nfargs > 6) |
178 |
> |
p.gecc = m->oargs.farg[6]; |
179 |
|
add2slist(&p, myslist); /* add to list */ |
180 |
|
} else { /* leaving ray */ |
181 |
|
if (myslist != NULL) { /* delete from list */ |
187 |
|
p.slights[++i] = p.slights[j]; |
188 |
|
if (p.slights[0] - i < myslist[0]) { /* fix old */ |
189 |
|
addcolor(r->cext, mext); |
190 |
< |
if (m->oargs.nfargs > 3) |
191 |
< |
r->albedo = m->oargs.farg[3]; |
192 |
< |
if (m->oargs.nfargs > 4) |
193 |
< |
r->gecc = m->oargs.farg[4]; |
190 |
> |
if (m->oargs.nfargs > 5) |
191 |
> |
setcolor(r->albedo, m->oargs.farg[3], |
192 |
> |
m->oargs.farg[4], m->oargs.farg[5]); |
193 |
> |
if (m->oargs.nfargs > 6) |
194 |
> |
r->gecc = m->oargs.farg[6]; |
195 |
|
add2slist(r, myslist); |
196 |
|
} |
197 |
|
p.slights[0] = i; |
206 |
|
colval(cextinction,BLU)) |
207 |
|
be = colval(cextinction,BLU); |
208 |
|
setcolor(p.cext, re, ge, be); |
209 |
< |
if (m->oargs.nfargs > 3) |
210 |
< |
p.albedo = salbedo; |
211 |
< |
if (m->oargs.nfargs > 4) |
209 |
> |
if (m->oargs.nfargs > 5) |
210 |
> |
copycolor(p.albedo, salbedo); |
211 |
> |
if (m->oargs.nfargs > 6) |
212 |
|
p.gecc = seccg; |
213 |
|
} |
214 |
|
rayvalue(&p); /* calls rayparticipate() */ |