| 1 |
– |
/* Copyright (c) 1992 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. |
| 9 |
– |
* |
| 10 |
– |
* 4/7/86 |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
+ |
#include "copyright.h" |
| 9 |
+ |
|
| 10 |
|
#include "ray.h" |
| 11 |
|
|
| 12 |
|
#include "otypes.h" |
| 38 |
|
getfunc(m, ff, ef, dofwd) /* get function for this modifier */ |
| 39 |
|
OBJREC *m; |
| 40 |
|
int ff; |
| 41 |
< |
unsigned ef; |
| 41 |
> |
unsigned int ef; |
| 42 |
|
int dofwd; |
| 43 |
|
{ |
| 47 |
– |
extern EPNODE *curfunc; |
| 44 |
|
static char initfile[] = INITFILE; |
| 45 |
|
char sbuf[MAXSTR]; |
| 46 |
|
register char **arg; |
| 52 |
|
return(f); |
| 53 |
|
fobj = NULL; fray = NULL; |
| 54 |
|
if (initfile[0]) { /* initialize on first call */ |
| 55 |
+ |
esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW; |
| 56 |
+ |
esupport &= ~(E_OUTCHAN); |
| 57 |
|
setcontext(""); |
| 58 |
|
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
| 59 |
|
scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0); |
| 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); |
| 81 |
|
if (i == 1 && arg[ff][0] == '.') |
| 82 |
|
setcontext(f->ctx = ""); /* "." means no file */ |
| 83 |
|
else { |
| 84 |
< |
strcpy(sbuf,arg[ff]); /* file name is context */ |
| 84 |
> |
strcpy(sbuf,arg[ff]); /* file name is context */ |
| 85 |
|
if (i > LCALSUF && !strcmp(sbuf+i-LCALSUF, CALSUF)) |
| 86 |
|
sbuf[i-LCALSUF] = '\0'; /* remove suffix */ |
| 87 |
|
setcontext(f->ctx = savestr(sbuf)); |
| 134 |
|
} |
| 135 |
|
|
| 136 |
|
|
| 137 |
+ |
void |
| 138 |
|
freefunc(m) /* free memory associated with modifier */ |
| 139 |
|
OBJREC *m; |
| 140 |
|
{ |
| 155 |
|
freestr(f->ctx); |
| 156 |
|
} |
| 157 |
|
if (f->b != &unitxf) |
| 158 |
< |
free((char *)f->b); |
| 158 |
> |
free((void *)f->b); |
| 159 |
|
if (f->f != NULL && f->f != &unitxf) |
| 160 |
< |
free((char *)f->f); |
| 161 |
< |
free((char *)f); |
| 160 |
> |
free((void *)f->f); |
| 161 |
> |
free((void *)f); |
| 162 |
|
m->os = NULL; |
| 163 |
|
} |
| 164 |
|
|
| 165 |
|
|
| 166 |
+ |
int |
| 167 |
|
setfunc(m, r) /* set channels for function call */ |
| 168 |
|
OBJREC *m; |
| 169 |
|
register RAY *r; |
| 172 |
|
register MFUNC *f; |
| 173 |
|
/* get function */ |
| 174 |
|
if ((f = (MFUNC *)m->os) == NULL) |
| 175 |
< |
error(m, CONSISTENCY, "setfunc called before getfunc"); |
| 175 |
> |
objerror(m, CONSISTENCY, "setfunc called before getfunc"); |
| 176 |
|
/* set evaluator context */ |
| 177 |
|
setcontext(f->ctx); |
| 178 |
|
/* check to see if matrix set */ |
| 194 |
|
} |
| 195 |
|
|
| 196 |
|
|
| 197 |
+ |
void |
| 198 |
|
loadfunc(fname) /* load definition file */ |
| 199 |
|
char *fname; |
| 200 |
|
{ |
| 199 |
– |
extern char *getlibpath(); /* library search path */ |
| 201 |
|
char *ffname; |
| 202 |
|
|
| 203 |
< |
if ((ffname = getpath(fname, getlibpath(), R_OK)) == NULL) { |
| 203 |
> |
if ((ffname = getpath(fname, getrlibpath(), R_OK)) == NULL) { |
| 204 |
|
sprintf(errmsg, "cannot find function file \"%s\"", fname); |
| 205 |
|
error(USER, errmsg); |
| 206 |
|
} |
| 211 |
|
static double |
| 212 |
|
l_arg() /* return nth real argument */ |
| 213 |
|
{ |
| 213 |
– |
extern double argument(); |
| 214 |
|
register int n; |
| 215 |
|
|
| 216 |
|
if (fobj == NULL) |
| 251 |
|
chanvalue(n) /* return channel n to calcomp */ |
| 252 |
|
register int n; |
| 253 |
|
{ |
| 254 |
– |
double sum; |
| 255 |
– |
register RAY *r; |
| 256 |
– |
|
| 254 |
|
if (fray == NULL) |
| 255 |
|
syntax("ray parameter used in constant expression"); |
| 256 |
|
|
| 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] + |
| 278 |
|
fray->rop[2]*funcxf.xfm[2][n-6] + |
| 279 |
|
funcxf.xfm[3][n-6] ); |
| 280 |
|
|
| 281 |
< |
if (n == 9) { /* total distance */ |
| 282 |
< |
sum = fray->rot; |
| 286 |
< |
for (r = fray->parent; r != NULL; r = r->parent) |
| 287 |
< |
sum += r->rot; |
| 288 |
< |
return(sum * funcxf.sca); |
| 281 |
> |
if (n == 9) /* total distance */ |
| 282 |
> |
return(raydist(fray,PRIMARY) * funcxf.sca); |
| 283 |
|
|
| 290 |
– |
} |
| 291 |
– |
|
| 284 |
|
if (n == 10) /* dot product (range [-1,1]) */ |
| 285 |
|
return( fray->rod <= -1.0 ? -1.0 : |
| 286 |
|
fray->rod >= 1.0 ? 1.0 : |
| 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 |
< |
sum = fray->rot; |
| 306 |
< |
for (r = fray->parent; r != NULL && r->crtype&SHADOW; |
| 307 |
< |
r = r->parent) |
| 308 |
< |
sum += r->rot; |
| 317 |
< |
return(sum * funcxf.sca); |
| 318 |
< |
} |
| 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 |
|
} |
