| 5 |
|
* func.c - interface to calcomp functions. |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
< |
/* ==================================================================== |
| 9 |
< |
* The Radiance Software License, Version 1.0 |
| 10 |
< |
* |
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< |
* 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 |
< |
* |
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< |
* 1. Redistributions of source code must retain the above copyright |
| 19 |
< |
* notice, this list of conditions and the following disclaimer. |
| 20 |
< |
* |
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< |
* 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 |
< |
* |
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< |
* 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 |
< |
* |
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< |
* 5. Products derived from this software may not be called "Radiance", |
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< |
* 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 |
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< |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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< |
* 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 |
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< |
* SUCH DAMAGE. |
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< |
* ==================================================================== |
| 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" |
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< |
|
| 11 |
> |
#include "paths.h" |
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|
#include "otypes.h" |
| 68 |
– |
|
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|
#include "func.h" |
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|
|
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|
|
| 30 |
|
static OBJREC *fobj = NULL; /* current function object */ |
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|
static RAY *fray = NULL; /* current function ray */ |
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|
|
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< |
static double l_erf(), l_erfc(), l_arg(); |
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> |
static double l_erf(char *), l_erfc(char *), l_arg(char *); |
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|
|
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|
|
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|
MFUNC * |
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< |
getfunc(m, ff, ef, dofwd) /* get function for this modifier */ |
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< |
OBJREC *m; |
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< |
int ff; |
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< |
unsigned int ef; |
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< |
int dofwd; |
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> |
getfunc( /* get function for this modifier */ |
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> |
OBJREC *m, |
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> |
int ff, |
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> |
unsigned int ef, |
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> |
int dofwd |
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> |
) |
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|
{ |
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|
static char initfile[] = INITFILE; |
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|
char sbuf[MAXSTR]; |
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< |
register char **arg; |
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< |
register MFUNC *f; |
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> |
char **arg; |
| 47 |
> |
MFUNC *f; |
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|
int ne, na; |
| 49 |
< |
register int i; |
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> |
int i; |
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|
/* check to see if done already */ |
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|
if ((f = (MFUNC *)m->os) != NULL) |
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|
return(f); |
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|
scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
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|
scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
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|
scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
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+ |
scompile("Lu=$26;Lv=$27;", NULL, 0); |
| 67 |
|
funset("arg", 1, '=', l_arg); |
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|
funset("erf", 1, ':', l_erf); |
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|
funset("erfc", 1, ':', l_erfc); |
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|
objerror(m, USER, "too few string arguments"); |
| 132 |
|
memerr: |
| 133 |
|
error(SYSTEM, "out of memory in getfunc"); |
| 134 |
+ |
return NULL; /* pro forma return */ |
| 135 |
|
} |
| 136 |
|
|
| 137 |
|
|
| 138 |
|
void |
| 139 |
< |
freefunc(m) /* free memory associated with modifier */ |
| 140 |
< |
OBJREC *m; |
| 139 |
> |
freefunc( /* free memory associated with modifier */ |
| 140 |
> |
OBJREC *m |
| 141 |
> |
) |
| 142 |
|
{ |
| 143 |
< |
register MFUNC *f; |
| 144 |
< |
register int i; |
| 143 |
> |
MFUNC *f; |
| 144 |
> |
int i; |
| 145 |
|
|
| 146 |
|
if ((f = (MFUNC *)m->os) == NULL) |
| 147 |
|
return; |
| 158 |
|
} |
| 159 |
|
if (f->b != &unitxf) |
| 160 |
|
free((void *)f->b); |
| 161 |
< |
if (f->f != NULL && f->f != &unitxf) |
| 161 |
> |
if ((f->f != NULL) & (f->f != &unitxf)) |
| 162 |
|
free((void *)f->f); |
| 163 |
|
free((void *)f); |
| 164 |
|
m->os = NULL; |
| 166 |
|
|
| 167 |
|
|
| 168 |
|
int |
| 169 |
< |
setfunc(m, r) /* set channels for function call */ |
| 170 |
< |
OBJREC *m; |
| 171 |
< |
register RAY *r; |
| 169 |
> |
setfunc( /* set channels for function call */ |
| 170 |
> |
OBJREC *m, /* can be NULL */ |
| 171 |
> |
RAY *r |
| 172 |
> |
) |
| 173 |
|
{ |
| 174 |
< |
static unsigned long lastrno = ~0; |
| 175 |
< |
register MFUNC *f; |
| 176 |
< |
/* get function */ |
| 177 |
< |
if ((f = (MFUNC *)m->os) == NULL) |
| 178 |
< |
objerror(m, CONSISTENCY, "setfunc called before getfunc"); |
| 179 |
< |
/* set evaluator context */ |
| 180 |
< |
setcontext(f->ctx); |
| 174 |
> |
static RNUMBER lastrno = ~0; |
| 175 |
> |
MFUNC *f; |
| 176 |
> |
/* get function if any */ |
| 177 |
> |
if (m != NULL) { |
| 178 |
> |
if ((f = (MFUNC *)m->os) == NULL) |
| 179 |
> |
objerror(m, CONSISTENCY, "setfunc called before getfunc"); |
| 180 |
> |
setcontext(f->ctx); /* set evaluator context */ |
| 181 |
> |
} else |
| 182 |
> |
setcontext(""); |
| 183 |
|
/* check to see if matrix set */ |
| 184 |
< |
if (m == fobj && r->rno == lastrno) |
| 184 |
> |
if ((m == fobj) & (r->rno == lastrno)) |
| 185 |
|
return(0); |
| 186 |
|
fobj = m; |
| 187 |
|
fray = r; |
| 190 |
|
funcxf.sca = r->rox->b.sca * f->b->sca; |
| 191 |
|
multmat4(funcxf.xfm, r->rox->b.xfm, f->b->xfm); |
| 192 |
|
} else |
| 193 |
< |
copystruct(&funcxf, &r->rox->b); |
| 193 |
> |
funcxf = r->rox->b; |
| 194 |
|
else |
| 195 |
< |
copystruct(&funcxf, f->b); |
| 195 |
> |
funcxf = *(f->b); |
| 196 |
|
lastrno = r->rno; |
| 197 |
|
eclock++; /* notify expression evaluator */ |
| 198 |
|
return(1); |
| 200 |
|
|
| 201 |
|
|
| 202 |
|
void |
| 203 |
< |
loadfunc(fname) /* load definition file */ |
| 204 |
< |
char *fname; |
| 203 |
> |
loadfunc( /* load definition file */ |
| 204 |
> |
char *fname |
| 205 |
> |
) |
| 206 |
|
{ |
| 207 |
|
char *ffname; |
| 208 |
|
|
| 209 |
< |
if ((ffname = getpath(fname, getlibpath(), R_OK)) == NULL) { |
| 209 |
> |
if ((ffname = getpath(fname, getrlibpath(), R_OK)) == NULL) { |
| 210 |
|
sprintf(errmsg, "cannot find function file \"%s\"", fname); |
| 211 |
|
error(USER, errmsg); |
| 212 |
|
} |
| 215 |
|
|
| 216 |
|
|
| 217 |
|
static double |
| 218 |
< |
l_arg() /* return nth real argument */ |
| 218 |
> |
l_arg(char *nm) /* return nth real argument */ |
| 219 |
|
{ |
| 220 |
< |
register int n; |
| 220 |
> |
int n; |
| 221 |
|
|
| 222 |
|
if (fobj == NULL) |
| 223 |
< |
syntax("arg(n) used in constant expression"); |
| 223 |
> |
error(USER, "arg(n) called without a context"); |
| 224 |
|
|
| 225 |
|
n = argument(1) + .5; /* round to integer */ |
| 226 |
|
|
| 236 |
|
|
| 237 |
|
|
| 238 |
|
static double |
| 239 |
< |
l_erf() /* error function */ |
| 239 |
> |
l_erf(char *nm) /* error function */ |
| 240 |
|
{ |
| 289 |
– |
extern double erf(); |
| 290 |
– |
|
| 241 |
|
return(erf(argument(1))); |
| 242 |
|
} |
| 243 |
|
|
| 244 |
|
|
| 245 |
|
static double |
| 246 |
< |
l_erfc() /* cumulative error function */ |
| 246 |
> |
l_erfc(char *nm) /* cumulative error function */ |
| 247 |
|
{ |
| 298 |
– |
extern double erfc(); |
| 299 |
– |
|
| 248 |
|
return(erfc(argument(1))); |
| 249 |
|
} |
| 250 |
|
|
| 251 |
|
|
| 252 |
|
double |
| 253 |
< |
chanvalue(n) /* return channel n to calcomp */ |
| 254 |
< |
register int n; |
| 253 |
> |
chanvalue( /* return channel n to calcomp */ |
| 254 |
> |
int n |
| 255 |
> |
) |
| 256 |
|
{ |
| 257 |
|
if (fray == NULL) |
| 258 |
|
syntax("ray parameter used in constant expression"); |
| 260 |
|
if (--n < 0) |
| 261 |
|
goto badchan; |
| 262 |
|
|
| 263 |
< |
if (n < 3) /* ray direction */ |
| 263 |
> |
if (n <= 2) /* ray direction */ |
| 264 |
|
|
| 265 |
|
return( ( fray->rdir[0]*funcxf.xfm[0][n] + |
| 266 |
|
fray->rdir[1]*funcxf.xfm[1][n] + |
| 267 |
|
fray->rdir[2]*funcxf.xfm[2][n] ) |
| 268 |
|
/ funcxf.sca ); |
| 269 |
|
|
| 270 |
< |
if (n < 6) /* surface normal */ |
| 270 |
> |
if (n <= 5) /* surface normal */ |
| 271 |
|
|
| 272 |
|
return( ( fray->ron[0]*funcxf.xfm[0][n-3] + |
| 273 |
|
fray->ron[1]*funcxf.xfm[1][n-3] + |
| 274 |
|
fray->ron[2]*funcxf.xfm[2][n-3] ) |
| 275 |
|
/ funcxf.sca ); |
| 276 |
|
|
| 277 |
< |
if (n < 9) /* intersection */ |
| 277 |
> |
if (n <= 8) /* intersection */ |
| 278 |
|
|
| 279 |
|
return( fray->rop[0]*funcxf.xfm[0][n-6] + |
| 280 |
|
fray->rop[1]*funcxf.xfm[1][n-6] + |
| 292 |
|
if (n == 11) /* scale */ |
| 293 |
|
return(funcxf.sca); |
| 294 |
|
|
| 295 |
< |
if (n < 15) /* origin */ |
| 295 |
> |
if (n <= 14) /* origin */ |
| 296 |
|
return(funcxf.xfm[3][n-12]); |
| 297 |
|
|
| 298 |
< |
if (n < 18) /* i unit vector */ |
| 298 |
> |
if (n <= 17) /* i unit vector */ |
| 299 |
|
return(funcxf.xfm[0][n-15] / funcxf.sca); |
| 300 |
|
|
| 301 |
< |
if (n < 21) /* j unit vector */ |
| 302 |
< |
return(funcxf.xfm[1][n-15] / funcxf.sca); |
| 301 |
> |
if (n <= 20) /* j unit vector */ |
| 302 |
> |
return(funcxf.xfm[1][n-18] / funcxf.sca); |
| 303 |
|
|
| 304 |
< |
if (n < 24) /* k unit vector */ |
| 304 |
> |
if (n <= 23) /* k unit vector */ |
| 305 |
|
return(funcxf.xfm[2][n-21] / funcxf.sca); |
| 306 |
|
|
| 307 |
|
if (n == 24) /* single ray (shadow) distance */ |
| 308 |
|
return((fray->rot+raydist(fray->parent,SHADOW)) * funcxf.sca); |
| 309 |
+ |
|
| 310 |
+ |
if (n <= 26) /* local (u,v) coordinates */ |
| 311 |
+ |
return(fray->uv[n-25]); |
| 312 |
|
badchan: |
| 313 |
|
error(USER, "illegal channel number"); |
| 314 |
+ |
return(0.0); |
| 315 |
|
} |
