102 |
|
* modified by the color of the material. |
103 |
|
*/ |
104 |
|
copycolor(ctmp, np->mcolor); |
105 |
< |
dtmp = ldot * omega * ldiff / PI; |
105 |
> |
dtmp = ldot * omega * ldiff * (1.0/PI); |
106 |
|
scalecolor(ctmp, dtmp); |
107 |
|
addcolor(cval, ctmp); |
108 |
|
} |
115 |
|
dtmp = np->alpha2; |
116 |
|
/* + source if flat */ |
117 |
|
if (np->specfl & SP_FLAT) |
118 |
< |
dtmp += omega/(4.0*PI); |
118 |
> |
dtmp += omega * (0.25/PI); |
119 |
|
/* half vector */ |
120 |
|
vtmp[0] = ldir[0] - np->rp->rdir[0]; |
121 |
|
vtmp[1] = ldir[1] - np->rp->rdir[1]; |
124 |
|
d2 *= d2; |
125 |
|
d2 = (DOT(vtmp,vtmp) - d2) / d2; |
126 |
|
/* gaussian */ |
127 |
< |
dtmp = exp(-d2/dtmp)/(4.*PI*dtmp); |
127 |
> |
dtmp = exp(-d2/dtmp)/(4.*PI * np->pdot * dtmp); |
128 |
|
/* worth using? */ |
129 |
|
if (dtmp > FTINY) { |
130 |
|
copycolor(ctmp, np->scolor); |
131 |
< |
dtmp *= omega * sqrt(ldot/np->pdot); |
131 |
> |
dtmp *= omega; |
132 |
|
scalecolor(ctmp, dtmp); |
133 |
|
addcolor(cval, ctmp); |
134 |
|
} |
138 |
|
* Compute diffuse transmission. |
139 |
|
*/ |
140 |
|
copycolor(ctmp, np->mcolor); |
141 |
< |
dtmp = -ldot * omega * np->tdiff / PI; |
141 |
> |
dtmp = -ldot * omega * np->tdiff * (1.0/PI); |
142 |
|
scalecolor(ctmp, dtmp); |
143 |
|
addcolor(cval, ctmp); |
144 |
|
} |
148 |
|
* is always modified by material color. |
149 |
|
*/ |
150 |
|
/* roughness + source */ |
151 |
< |
dtmp = np->alpha2 + omega/PI; |
151 |
> |
dtmp = np->alpha2 + omega*(1.0/PI); |
152 |
|
/* gaussian */ |
153 |
< |
dtmp = exp((2.*DOT(np->prdir,ldir)-2.)/dtmp)/(PI*dtmp); |
153 |
> |
dtmp = exp((2.*DOT(np->prdir,ldir)-2.)/dtmp) / |
154 |
> |
(PI*np->pdot*dtmp); |
155 |
|
/* worth using? */ |
156 |
|
if (dtmp > FTINY) { |
157 |
|
copycolor(ctmp, np->mcolor); |
158 |
< |
dtmp *= np->tspec * omega * sqrt(-ldot/np->pdot); |
158 |
> |
dtmp *= np->tspec * omega; |
159 |
|
scalecolor(ctmp, dtmp); |
160 |
|
addcolor(cval, ctmp); |
161 |
|
} |