8 |
|
#include "copyright.h" |
9 |
|
|
10 |
|
#include "ray.h" |
11 |
– |
|
11 |
|
#include "otypes.h" |
12 |
+ |
#include "rtotypes.h" |
13 |
|
|
14 |
|
#ifdef DISPERSE |
15 |
|
#include "source.h" |
16 |
< |
static disperse(); |
17 |
< |
static int lambda(); |
16 |
> |
static int disperse(OBJREC *m,RAY *r,FVECT vt,double tr,COLOR cet,COLOR abt); |
17 |
> |
static int lambda(OBJREC *m, FVECT v2, FVECT dv, FVECT lr); |
18 |
|
#endif |
19 |
|
|
20 |
+ |
static double mylog(double x); |
21 |
+ |
|
22 |
+ |
|
23 |
|
/* |
24 |
|
* Explicit calculations for Fresnel's equation are performed, |
25 |
|
* but only one square root computation is necessary. |
52 |
|
|
53 |
|
|
54 |
|
static double |
55 |
< |
mylog(x) /* special log for extinction coefficients */ |
56 |
< |
double x; |
55 |
> |
mylog( /* special log for extinction coefficients */ |
56 |
> |
double x |
57 |
> |
) |
58 |
|
{ |
59 |
|
if (x < 1e-40) |
60 |
|
return(-100.); |
64 |
|
} |
65 |
|
|
66 |
|
|
67 |
< |
m_dielectric(m, r) /* color a ray which hit a dielectric interface */ |
68 |
< |
OBJREC *m; |
69 |
< |
register RAY *r; |
67 |
> |
extern int |
68 |
> |
m_dielectric( /* color a ray which hit a dielectric interface */ |
69 |
> |
OBJREC *m, |
70 |
> |
register RAY *r |
71 |
> |
) |
72 |
|
{ |
73 |
|
double cos1, cos2, nratio; |
74 |
|
COLOR ctrans; |
85 |
|
|
86 |
|
raytexture(r, m->omod); /* get modifiers */ |
87 |
|
|
88 |
< |
if (hastexture = DOT(r->pert,r->pert) > FTINY*FTINY) |
88 |
> |
if ( (hastexture = DOT(r->pert,r->pert) > FTINY*FTINY) ) |
89 |
|
cos1 = raynormal(dnorm, r); /* perturb normal */ |
90 |
|
else { |
91 |
|
VCOPY(dnorm, r->ron); |
218 |
|
|
219 |
|
#ifdef DISPERSE |
220 |
|
|
221 |
< |
static |
222 |
< |
disperse(m, r, vt, tr, cet, abt) /* check light sources for dispersion */ |
223 |
< |
OBJREC *m; |
224 |
< |
RAY *r; |
225 |
< |
FVECT vt; |
226 |
< |
double tr; |
227 |
< |
COLOR cet, abt; |
221 |
> |
static int |
222 |
> |
disperse( /* check light sources for dispersion */ |
223 |
> |
OBJREC *m, |
224 |
> |
RAY *r, |
225 |
> |
FVECT vt, |
226 |
> |
double tr, |
227 |
> |
COLOR cet, |
228 |
> |
COLOR abt |
229 |
> |
) |
230 |
|
{ |
231 |
|
RAY sray, *entray; |
232 |
|
FVECT v1, v2, n1, n2; |
357 |
|
|
358 |
|
|
359 |
|
static int |
360 |
< |
lambda(m, v2, dv, lr) /* compute lambda for material */ |
361 |
< |
register OBJREC *m; |
362 |
< |
FVECT v2, dv, lr; |
360 |
> |
lambda( /* compute lambda for material */ |
361 |
> |
register OBJREC *m, |
362 |
> |
FVECT v2, |
363 |
> |
FVECT dv, |
364 |
> |
FVECT lr |
365 |
> |
) |
366 |
|
{ |
367 |
|
FVECT lrXdv, v2Xlr; |
368 |
|
double dtmp, denom; |