63 |
|
scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
64 |
|
scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
65 |
|
scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
66 |
+ |
scompile("Lu=$26;Lv=$27;", NULL, 0); |
67 |
|
funset("arg", 1, '=', l_arg); |
68 |
|
funset("erf", 1, ':', l_erf); |
69 |
|
funset("erfc", 1, ':', l_erfc); |
257 |
|
if (--n < 0) |
258 |
|
goto badchan; |
259 |
|
|
260 |
< |
if (n < 3) /* ray direction */ |
260 |
> |
if (n <= 2) /* ray direction */ |
261 |
|
|
262 |
|
return( ( fray->rdir[0]*funcxf.xfm[0][n] + |
263 |
|
fray->rdir[1]*funcxf.xfm[1][n] + |
264 |
|
fray->rdir[2]*funcxf.xfm[2][n] ) |
265 |
|
/ funcxf.sca ); |
266 |
|
|
267 |
< |
if (n < 6) /* surface normal */ |
267 |
> |
if (n <= 5) /* surface normal */ |
268 |
|
|
269 |
|
return( ( fray->ron[0]*funcxf.xfm[0][n-3] + |
270 |
|
fray->ron[1]*funcxf.xfm[1][n-3] + |
271 |
|
fray->ron[2]*funcxf.xfm[2][n-3] ) |
272 |
|
/ funcxf.sca ); |
273 |
|
|
274 |
< |
if (n < 9) /* intersection */ |
274 |
> |
if (n <= 8) /* intersection */ |
275 |
|
|
276 |
|
return( fray->rop[0]*funcxf.xfm[0][n-6] + |
277 |
|
fray->rop[1]*funcxf.xfm[1][n-6] + |
289 |
|
if (n == 11) /* scale */ |
290 |
|
return(funcxf.sca); |
291 |
|
|
292 |
< |
if (n < 15) /* origin */ |
292 |
> |
if (n <= 14) /* origin */ |
293 |
|
return(funcxf.xfm[3][n-12]); |
294 |
|
|
295 |
< |
if (n < 18) /* i unit vector */ |
295 |
> |
if (n <= 17) /* i unit vector */ |
296 |
|
return(funcxf.xfm[0][n-15] / funcxf.sca); |
297 |
|
|
298 |
< |
if (n < 21) /* j unit vector */ |
299 |
< |
return(funcxf.xfm[1][n-15] / funcxf.sca); |
298 |
> |
if (n <= 20) /* j unit vector */ |
299 |
> |
return(funcxf.xfm[1][n-18] / funcxf.sca); |
300 |
|
|
301 |
< |
if (n < 24) /* k unit vector */ |
301 |
> |
if (n <= 23) /* k unit vector */ |
302 |
|
return(funcxf.xfm[2][n-21] / funcxf.sca); |
303 |
|
|
304 |
|
if (n == 24) /* single ray (shadow) distance */ |
305 |
|
return((fray->rot+raydist(fray->parent,SHADOW)) * funcxf.sca); |
306 |
+ |
|
307 |
+ |
if (n <= 26) /* local (u,v) coordinates */ |
308 |
+ |
return(fray->uv[n-25]); |
309 |
|
badchan: |
310 |
|
error(USER, "illegal channel number"); |
311 |
+ |
return(0.0); |
312 |
|
} |