| 5 |
|
* func.c - interface to calcomp functions. |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
< |
/* ==================================================================== |
| 9 |
< |
* The Radiance Software License, Version 1.0 |
| 10 |
< |
* |
| 11 |
< |
* Copyright (c) 1990 - 2002 The Regents of the University of California, |
| 12 |
< |
* through Lawrence Berkeley National Laboratory. All rights reserved. |
| 13 |
< |
* |
| 14 |
< |
* Redistribution and use in source and binary forms, with or without |
| 15 |
< |
* modification, are permitted provided that the following conditions |
| 16 |
< |
* are met: |
| 17 |
< |
* |
| 18 |
< |
* 1. Redistributions of source code must retain the above copyright |
| 19 |
< |
* notice, this list of conditions and the following disclaimer. |
| 20 |
< |
* |
| 21 |
< |
* 2. Redistributions in binary form must reproduce the above copyright |
| 22 |
< |
* notice, this list of conditions and the following disclaimer in |
| 23 |
< |
* the documentation and/or other materials provided with the |
| 24 |
< |
* distribution. |
| 25 |
< |
* |
| 26 |
< |
* 3. The end-user documentation included with the redistribution, |
| 27 |
< |
* if any, must include the following acknowledgment: |
| 28 |
< |
* "This product includes Radiance software |
| 29 |
< |
* (http://radsite.lbl.gov/) |
| 30 |
< |
* developed by the Lawrence Berkeley National Laboratory |
| 31 |
< |
* (http://www.lbl.gov/)." |
| 32 |
< |
* Alternately, this acknowledgment may appear in the software itself, |
| 33 |
< |
* if and wherever such third-party acknowledgments normally appear. |
| 34 |
< |
* |
| 35 |
< |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
| 36 |
< |
* and "The Regents of the University of California" must |
| 37 |
< |
* not be used to endorse or promote products derived from this |
| 38 |
< |
* software without prior written permission. For written |
| 39 |
< |
* permission, please contact [email protected]. |
| 40 |
< |
* |
| 41 |
< |
* 5. Products derived from this software may not be called "Radiance", |
| 42 |
< |
* nor may "Radiance" appear in their name, without prior written |
| 43 |
< |
* permission of Lawrence Berkeley National Laboratory. |
| 44 |
< |
* |
| 45 |
< |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| 46 |
< |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 47 |
< |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 48 |
< |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
| 49 |
< |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 50 |
< |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 51 |
< |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 52 |
< |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 53 |
< |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 54 |
< |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 55 |
< |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 56 |
< |
* SUCH DAMAGE. |
| 57 |
< |
* ==================================================================== |
| 58 |
< |
* |
| 59 |
< |
* This software consists of voluntary contributions made by many |
| 60 |
< |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
| 61 |
< |
* information on Lawrence Berkeley National Laboratory, please see |
| 62 |
< |
* <http://www.lbl.gov/>. |
| 63 |
< |
*/ |
| 8 |
> |
#include "copyright.h" |
| 9 |
|
|
| 10 |
|
#include "ray.h" |
| 11 |
|
|
| 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 |
|
} |
