| 1 |
– |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* func.c - interface to calcomp functions. |
| 6 |
+ |
*/ |
| 7 |
+ |
|
| 8 |
+ |
/* ==================================================================== |
| 9 |
+ |
* The Radiance Software License, Version 1.0 |
| 10 |
|
* |
| 11 |
< |
* 4/7/86 |
| 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 |
|
*/ |
| 64 |
|
|
| 65 |
|
#include "ray.h" |
| 70 |
|
|
| 71 |
|
|
| 72 |
|
#define INITFILE "rayinit.cal" |
| 21 |
– |
#define REFVNAME "`FILE_REFCNT" |
| 73 |
|
#define CALSUF ".cal" |
| 74 |
|
#define LCALSUF 4 |
| 75 |
+ |
char REFVNAME[] = "`FILE_REFCNT"; |
| 76 |
|
|
| 77 |
|
XF unitxf = { /* identity transform */ |
| 78 |
< |
1.0, 0.0, 0.0, 0.0, |
| 79 |
< |
0.0, 1.0, 0.0, 0.0, |
| 80 |
< |
0.0, 0.0, 1.0, 0.0, |
| 81 |
< |
0.0, 0.0, 0.0, 1.0, |
| 78 |
> |
{{1.0, 0.0, 0.0, 0.0}, |
| 79 |
> |
{0.0, 1.0, 0.0, 0.0}, |
| 80 |
> |
{0.0, 0.0, 1.0, 0.0}, |
| 81 |
> |
{0.0, 0.0, 0.0, 1.0}}, |
| 82 |
|
1.0 |
| 83 |
|
}; |
| 84 |
|
|
| 93 |
|
getfunc(m, ff, ef, dofwd) /* get function for this modifier */ |
| 94 |
|
OBJREC *m; |
| 95 |
|
int ff; |
| 96 |
< |
unsigned ef; |
| 96 |
> |
unsigned int ef; |
| 97 |
|
int dofwd; |
| 98 |
|
{ |
| 47 |
– |
extern EPNODE *curfunc; |
| 99 |
|
static char initfile[] = INITFILE; |
| 100 |
|
char sbuf[MAXSTR]; |
| 101 |
|
register char **arg; |
| 105 |
|
/* check to see if done already */ |
| 106 |
|
if ((f = (MFUNC *)m->os) != NULL) |
| 107 |
|
return(f); |
| 108 |
+ |
fobj = NULL; fray = NULL; |
| 109 |
|
if (initfile[0]) { /* initialize on first call */ |
| 110 |
+ |
esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW; |
| 111 |
+ |
esupport &= ~(E_OUTCHAN); |
| 112 |
|
setcontext(""); |
| 113 |
|
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
| 114 |
|
scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0); |
| 115 |
|
scompile("Px=$7;Py=$8;Pz=$9;", NULL, 0); |
| 116 |
< |
scompile("T=$10;Rdot=$11;", NULL, 0); |
| 116 |
> |
scompile("T=$10;Ts=$25;Rdot=$11;", NULL, 0); |
| 117 |
|
scompile("S=$12;Tx=$13;Ty=$14;Tz=$15;", NULL, 0); |
| 118 |
|
scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
| 119 |
|
scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
| 122 |
|
funset("erf", 1, ':', l_erf); |
| 123 |
|
funset("erfc", 1, ':', l_erfc); |
| 124 |
|
setnoisefuncs(); |
| 125 |
+ |
setprismfuncs(); |
| 126 |
|
loadfunc(initfile); |
| 127 |
|
initfile[0] = '\0'; |
| 128 |
|
} |
| 135 |
|
if (i == 1 && arg[ff][0] == '.') |
| 136 |
|
setcontext(f->ctx = ""); /* "." means no file */ |
| 137 |
|
else { |
| 138 |
< |
strcpy(sbuf,m->oargs.sarg[ff]); /* file name is context */ |
| 138 |
> |
strcpy(sbuf,arg[ff]); /* file name is context */ |
| 139 |
|
if (i > LCALSUF && !strcmp(sbuf+i-LCALSUF, CALSUF)) |
| 140 |
|
sbuf[i-LCALSUF] = '\0'; /* remove suffix */ |
| 141 |
|
setcontext(f->ctx = savestr(sbuf)); |
| 142 |
|
if (!vardefined(REFVNAME)) { /* file loaded? */ |
| 143 |
< |
loadfunc(m->oargs.sarg[ff]); |
| 143 |
> |
loadfunc(arg[ff]); |
| 144 |
|
varset(REFVNAME, '=', 1.0); |
| 145 |
|
} else /* reference_count++ */ |
| 146 |
|
varset(REFVNAME, '=', varvalue(REFVNAME)+1.0); |
| 182 |
|
m->os = (char *)f; |
| 183 |
|
return(f); |
| 184 |
|
toofew: |
| 185 |
< |
objerror(m, USER, "too few arguments"); |
| 185 |
> |
objerror(m, USER, "too few string arguments"); |
| 186 |
|
memerr: |
| 187 |
|
error(SYSTEM, "out of memory in getfunc"); |
| 188 |
|
} |
| 189 |
|
|
| 190 |
|
|
| 191 |
+ |
void |
| 192 |
|
freefunc(m) /* free memory associated with modifier */ |
| 193 |
|
OBJREC *m; |
| 194 |
|
{ |
| 209 |
|
freestr(f->ctx); |
| 210 |
|
} |
| 211 |
|
if (f->b != &unitxf) |
| 212 |
< |
free((char *)f->b); |
| 212 |
> |
free((void *)f->b); |
| 213 |
|
if (f->f != NULL && f->f != &unitxf) |
| 214 |
< |
free((char *)f->f); |
| 215 |
< |
free((char *)f); |
| 214 |
> |
free((void *)f->f); |
| 215 |
> |
free((void *)f); |
| 216 |
|
m->os = NULL; |
| 217 |
|
} |
| 218 |
|
|
| 219 |
|
|
| 220 |
+ |
int |
| 221 |
|
setfunc(m, r) /* set channels for function call */ |
| 222 |
|
OBJREC *m; |
| 223 |
|
register RAY *r; |
| 224 |
|
{ |
| 225 |
< |
static long lastrno = -1; |
| 225 |
> |
static unsigned long lastrno = ~0; |
| 226 |
|
register MFUNC *f; |
| 227 |
|
/* get function */ |
| 228 |
|
if ((f = (MFUNC *)m->os) == NULL) |
| 229 |
< |
error(m, CONSISTENCY, "setfunc called before getfunc"); |
| 229 |
> |
objerror(m, CONSISTENCY, "setfunc called before getfunc"); |
| 230 |
|
/* set evaluator context */ |
| 231 |
|
setcontext(f->ctx); |
| 232 |
|
/* check to see if matrix set */ |
| 248 |
|
} |
| 249 |
|
|
| 250 |
|
|
| 251 |
+ |
void |
| 252 |
|
loadfunc(fname) /* load definition file */ |
| 253 |
|
char *fname; |
| 254 |
|
{ |
| 197 |
– |
extern char *libpath; /* library search path */ |
| 255 |
|
char *ffname; |
| 256 |
|
|
| 257 |
< |
if ((ffname = getpath(fname, libpath, R_OK)) == NULL) { |
| 257 |
> |
if ((ffname = getpath(fname, getlibpath(), R_OK)) == NULL) { |
| 258 |
|
sprintf(errmsg, "cannot find function file \"%s\"", fname); |
| 259 |
|
error(USER, errmsg); |
| 260 |
|
} |
| 265 |
|
static double |
| 266 |
|
l_arg() /* return nth real argument */ |
| 267 |
|
{ |
| 211 |
– |
extern double argument(); |
| 268 |
|
register int n; |
| 269 |
|
|
| 270 |
+ |
if (fobj == NULL) |
| 271 |
+ |
syntax("arg(n) used in constant expression"); |
| 272 |
+ |
|
| 273 |
|
n = argument(1) + .5; /* round to integer */ |
| 274 |
|
|
| 275 |
|
if (n < 1) |
| 305 |
|
chanvalue(n) /* return channel n to calcomp */ |
| 306 |
|
register int n; |
| 307 |
|
{ |
| 308 |
< |
double sum; |
| 309 |
< |
register RAY *r; |
| 308 |
> |
if (fray == NULL) |
| 309 |
> |
syntax("ray parameter used in constant expression"); |
| 310 |
|
|
| 311 |
|
if (--n < 0) |
| 312 |
|
goto badchan; |
| 332 |
|
fray->rop[2]*funcxf.xfm[2][n-6] + |
| 333 |
|
funcxf.xfm[3][n-6] ); |
| 334 |
|
|
| 335 |
< |
if (n == 9) { /* distance */ |
| 335 |
> |
if (n == 9) /* total distance */ |
| 336 |
> |
return(raydist(fray,PRIMARY) * funcxf.sca); |
| 337 |
|
|
| 278 |
– |
sum = fray->rot; |
| 279 |
– |
for (r = fray->parent; r != NULL; r = r->parent) |
| 280 |
– |
sum += r->rot; |
| 281 |
– |
return(sum * funcxf.sca); |
| 282 |
– |
|
| 283 |
– |
} |
| 338 |
|
if (n == 10) /* dot product (range [-1,1]) */ |
| 339 |
|
return( fray->rod <= -1.0 ? -1.0 : |
| 340 |
|
fray->rod >= 1.0 ? 1.0 : |
| 354 |
|
|
| 355 |
|
if (n < 24) /* k unit vector */ |
| 356 |
|
return(funcxf.xfm[2][n-21] / funcxf.sca); |
| 357 |
+ |
|
| 358 |
+ |
if (n == 24) /* single ray (shadow) distance */ |
| 359 |
+ |
return((fray->rot+raydist(fray->parent,SHADOW)) * funcxf.sca); |
| 360 |
|
badchan: |
| 361 |
|
error(USER, "illegal channel number"); |
| 362 |
|
} |
