70 |
|
|
71 |
|
if (ldot > FTINY && np->rdiff > FTINY) { |
72 |
|
/* |
73 |
< |
* Compute and add diffuse component to returned color. |
74 |
< |
* The diffuse component will always be modified by the |
75 |
< |
* color of the material. |
73 |
> |
* Compute and add diffuse reflected component to returned |
74 |
> |
* color. The diffuse reflected component will always be |
75 |
> |
* modified by the color of the material. |
76 |
|
*/ |
77 |
|
copycolor(ctmp, np->mcolor); |
78 |
|
dtmp = ldot * omega * np->rdiff / PI; |
107 |
|
} |
108 |
|
if (ldot < -FTINY && np->tspec > FTINY && np->alpha2 > FTINY) { |
109 |
|
/* |
110 |
< |
* Compute specular transmission. |
110 |
> |
* Compute specular transmission. Specular transmission |
111 |
> |
* is unaffected by material color. |
112 |
|
*/ |
113 |
|
/* roughness + source */ |
114 |
|
dtmp = np->alpha2 + omega/(2.0*PI); |
116 |
|
dtmp = exp((DOT(np->pr->rdir,ldir)-1.)/dtmp)/(2.*PI)/dtmp; |
117 |
|
/* worth using? */ |
118 |
|
if (dtmp > FTINY) { |
118 |
– |
copycolor(ctmp, np->mcolor); |
119 |
|
dtmp *= np->tspec * omega; |
120 |
< |
scalecolor(ctmp, dtmp); |
120 |
> |
setcolor(ctmp, dtmp, dtmp, dtmp); |
121 |
|
addcolor(cval, ctmp); |
122 |
|
} |
123 |
|
} |