38 |
|
* Arguments for MAT_TFUNC are: |
39 |
|
* 2+ func funcfile transform |
40 |
|
* 0 |
41 |
< |
* 4+ red grn blu rspec trans tspec A7 .. |
41 |
> |
* 6+ red grn blu rspec trans tspec A7 .. |
42 |
|
* |
43 |
|
* Arguments for MAT_TDATA are: |
44 |
|
* 4+ func datafile funcfile v0 .. transform |
45 |
|
* 0 |
46 |
< |
* 4+ red grn blu rspec trans tspec A7 .. |
46 |
> |
* 6+ red grn blu rspec trans tspec A7 .. |
47 |
|
* |
48 |
|
* Arguments for the more general MAT_BRTDF are: |
49 |
|
* 10+ rrefl grefl brefl |
77 |
|
} BRDFDAT; /* BRDF material data */ |
78 |
|
|
79 |
|
|
80 |
< |
static srcdirf_t dirbrdf; |
81 |
< |
static int setbrdfunc(BRDFDAT *np); |
80 |
> |
static int setbrdfunc(BRDFDAT *np); |
81 |
|
|
82 |
|
|
83 |
|
static void |
88 |
|
double omega /* light source size */ |
89 |
|
) |
90 |
|
{ |
91 |
< |
register BRDFDAT *np = nnp; |
91 |
> |
BRDFDAT *np = nnp; |
92 |
|
double ldot; |
93 |
|
double dtmp; |
94 |
|
COLOR ctmp; |
95 |
|
FVECT ldx; |
96 |
|
static double vldx[5], pt[MAXDIM]; |
97 |
< |
register char **sa; |
98 |
< |
register int i; |
97 |
> |
char **sa; |
98 |
> |
int i; |
99 |
|
#define lddx (vldx+1) |
100 |
|
|
101 |
|
setcolor(cval, 0.0, 0.0, 0.0); |
140 |
|
lddx[3] = omega; |
141 |
|
/* compute BRTDF */ |
142 |
|
if (np->mp->otype == MAT_BRTDF) { |
143 |
< |
if (sa[6][0] == '0') /* special case */ |
143 |
> |
if (sa[6][0] == '0' && !sa[6][1]) /* special case */ |
144 |
|
colval(ctmp,RED) = 0.0; |
145 |
|
else |
146 |
|
colval(ctmp,RED) = funvalue(sa[6], 4, lddx); |
147 |
< |
if (sa[7][0] == '0') |
147 |
> |
if (sa[7][0] == '0' && !sa[7][1]) |
148 |
|
colval(ctmp,GRN) = 0.0; |
149 |
|
else if (!strcmp(sa[7],sa[6])) |
150 |
|
colval(ctmp,GRN) = colval(ctmp,RED); |
151 |
|
else |
152 |
|
colval(ctmp,GRN) = funvalue(sa[7], 4, lddx); |
153 |
< |
if (!strcmp(sa[8],sa[6])) |
153 |
> |
if (sa[8][0] == '0' && !sa[8][1]) |
154 |
> |
colval(ctmp,BLU) = 0.0; |
155 |
> |
else if (!strcmp(sa[8],sa[6])) |
156 |
|
colval(ctmp,BLU) = colval(ctmp,RED); |
157 |
|
else if (!strcmp(sa[8],sa[7])) |
158 |
|
colval(ctmp,BLU) = colval(ctmp,GRN); |
198 |
|
} |
199 |
|
|
200 |
|
|
201 |
< |
extern int |
201 |
> |
int |
202 |
|
m_brdf( /* color a ray that hit a BRDTfunc material */ |
203 |
< |
register OBJREC *m, |
204 |
< |
register RAY *r |
203 |
> |
OBJREC *m, |
204 |
> |
RAY *r |
205 |
|
) |
206 |
|
{ |
207 |
|
int hitfront = 1; |
208 |
|
BRDFDAT nd; |
209 |
|
RAY sr; |
210 |
|
double mirtest=0, mirdist=0; |
211 |
< |
double transtest, transdist; |
211 |
> |
double transtest=0, transdist=0; |
212 |
|
int hasrefl, hastrans; |
213 |
|
int hastexture; |
214 |
|
COLOR ctmp; |
215 |
|
FVECT vtmp; |
216 |
|
double d; |
217 |
< |
register MFUNC *mf; |
218 |
< |
register int i; |
217 |
> |
MFUNC *mf; |
218 |
> |
int i; |
219 |
|
/* check arguments */ |
220 |
|
if ((m->oargs.nsargs < 10) | (m->oargs.nfargs < 9)) |
221 |
|
objerror(m, USER, "bad # arguments"); |
346 |
|
|
347 |
|
|
348 |
|
|
349 |
< |
extern int |
349 |
> |
int |
350 |
|
m_brdf2( /* color a ray that hit a BRDF material */ |
351 |
< |
register OBJREC *m, |
352 |
< |
register RAY *r |
351 |
> |
OBJREC *m, |
352 |
> |
RAY *r |
353 |
|
) |
354 |
|
{ |
355 |
|
BRDFDAT nd; |
365 |
|
objerror(m, USER, "bad # arguments"); |
366 |
|
/* check for back side */ |
367 |
|
if (r->rod < 0.0) { |
368 |
< |
if (!backvis && m->otype != MAT_TFUNC |
368 |
< |
&& m->otype != MAT_TDATA) { |
368 |
> |
if (!backvis) { |
369 |
|
raytrans(r); |
370 |
|
return(1); |
371 |
|
} |
434 |
|
|
435 |
|
static int |
436 |
|
setbrdfunc( /* set up brdf function and variables */ |
437 |
< |
register BRDFDAT *np |
437 |
> |
BRDFDAT *np |
438 |
|
) |
439 |
|
{ |
440 |
|
FVECT vec; |