| 192 |
|
|
| 193 |
|
if (m->oargs.nfargs != (m->otype == MAT_TRANS2 ? 8 : 6)) |
| 194 |
|
objerror(m, USER, "bad number of real arguments"); |
| 195 |
+ |
/* check for back side */ |
| 196 |
+ |
if (r->rod < 0.0) { |
| 197 |
+ |
if (!backvis && m->otype != MAT_TRANS2) { |
| 198 |
+ |
raytrans(r); |
| 199 |
+ |
return(1); |
| 200 |
+ |
} |
| 201 |
+ |
raytexture(r, m->omod); |
| 202 |
+ |
flipsurface(r); /* reorient if backvis */ |
| 203 |
+ |
} else |
| 204 |
+ |
raytexture(r, m->omod); |
| 205 |
+ |
/* get material color */ |
| 206 |
|
nd.mp = m; |
| 207 |
|
nd.rp = r; |
| 197 |
– |
/* get material color */ |
| 208 |
|
setcolor(nd.mcolor, m->oargs.farg[0], |
| 209 |
|
m->oargs.farg[1], |
| 210 |
|
m->oargs.farg[2]); |
| 214 |
|
nd.v_alpha = m->oargs.farg[5]; |
| 215 |
|
if (nd.u_alpha < FTINY || nd.v_alpha <= FTINY) |
| 216 |
|
objerror(m, USER, "roughness too small"); |
| 217 |
< |
/* check for back side */ |
| 208 |
< |
if (r->rod < 0.0) { |
| 209 |
< |
if (!backvis && m->otype != MAT_TRANS2) { |
| 210 |
< |
raytrans(r); |
| 211 |
< |
return(1); |
| 212 |
< |
} |
| 213 |
< |
flipsurface(r); /* reorient if backvis */ |
| 214 |
< |
} |
| 215 |
< |
/* get modifiers */ |
| 216 |
< |
raytexture(r, m->omod); |
| 217 |
> |
|
| 218 |
|
nd.pdot = raynormal(nd.pnorm, r); /* perturb normal */ |
| 219 |
|
if (nd.pdot < .001) |
| 220 |
|
nd.pdot = .001; /* non-zero for diraniso() */ |
