| 18 |
|
|
| 19 |
|
|
| 20 |
|
#define INITFILE "rayinit.cal" |
| 21 |
– |
#define REFVNAME "`FILE_REFCNT" |
| 21 |
|
#define CALSUF ".cal" |
| 22 |
|
#define LCALSUF 4 |
| 23 |
+ |
char REFVNAME[] = "`FILE_REFCNT"; |
| 24 |
|
|
| 25 |
|
XF unitxf = { /* identity transform */ |
| 26 |
< |
1.0, 0.0, 0.0, 0.0, |
| 27 |
< |
0.0, 1.0, 0.0, 0.0, |
| 28 |
< |
0.0, 0.0, 1.0, 0.0, |
| 29 |
< |
0.0, 0.0, 0.0, 1.0, |
| 26 |
> |
{{1.0, 0.0, 0.0, 0.0}, |
| 27 |
> |
{0.0, 1.0, 0.0, 0.0}, |
| 28 |
> |
{0.0, 0.0, 1.0, 0.0}, |
| 29 |
> |
{0.0, 0.0, 0.0, 1.0}}, |
| 30 |
|
1.0 |
| 31 |
|
}; |
| 32 |
|
|
| 54 |
|
/* check to see if done already */ |
| 55 |
|
if ((f = (MFUNC *)m->os) != NULL) |
| 56 |
|
return(f); |
| 57 |
+ |
fobj = NULL; fray = NULL; |
| 58 |
|
if (initfile[0]) { /* initialize on first call */ |
| 59 |
|
setcontext(""); |
| 60 |
|
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
| 61 |
|
scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0); |
| 62 |
|
scompile("Px=$7;Py=$8;Pz=$9;", NULL, 0); |
| 63 |
< |
scompile("T=$10;Rdot=$11;", NULL, 0); |
| 63 |
> |
scompile("T=$10;Ts=$25;Rdot=$11;", NULL, 0); |
| 64 |
|
scompile("S=$12;Tx=$13;Ty=$14;Tz=$15;", NULL, 0); |
| 65 |
|
scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
| 66 |
|
scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
| 69 |
|
funset("erf", 1, ':', l_erf); |
| 70 |
|
funset("erfc", 1, ':', l_erfc); |
| 71 |
|
setnoisefuncs(); |
| 72 |
+ |
setprismfuncs(); |
| 73 |
|
loadfunc(initfile); |
| 74 |
|
initfile[0] = '\0'; |
| 75 |
|
} |
| 82 |
|
if (i == 1 && arg[ff][0] == '.') |
| 83 |
|
setcontext(f->ctx = ""); /* "." means no file */ |
| 84 |
|
else { |
| 85 |
< |
strcpy(sbuf,m->oargs.sarg[ff]); /* file name is context */ |
| 85 |
> |
strcpy(sbuf,arg[ff]); /* file name is context */ |
| 86 |
|
if (i > LCALSUF && !strcmp(sbuf+i-LCALSUF, CALSUF)) |
| 87 |
|
sbuf[i-LCALSUF] = '\0'; /* remove suffix */ |
| 88 |
|
setcontext(f->ctx = savestr(sbuf)); |
| 89 |
|
if (!vardefined(REFVNAME)) { /* file loaded? */ |
| 90 |
< |
loadfunc(m->oargs.sarg[ff]); |
| 90 |
> |
loadfunc(arg[ff]); |
| 91 |
|
varset(REFVNAME, '=', 1.0); |
| 92 |
|
} else /* reference_count++ */ |
| 93 |
|
varset(REFVNAME, '=', varvalue(REFVNAME)+1.0); |
| 167 |
|
OBJREC *m; |
| 168 |
|
register RAY *r; |
| 169 |
|
{ |
| 170 |
< |
static long lastrno = -1; |
| 170 |
> |
static unsigned long lastrno = ~0; |
| 171 |
|
register MFUNC *f; |
| 172 |
|
/* get function */ |
| 173 |
|
if ((f = (MFUNC *)m->os) == NULL) |
| 213 |
|
extern double argument(); |
| 214 |
|
register int n; |
| 215 |
|
|
| 216 |
+ |
if (fobj == NULL) |
| 217 |
+ |
syntax("arg(n) used in constant expression"); |
| 218 |
+ |
|
| 219 |
|
n = argument(1) + .5; /* round to integer */ |
| 220 |
|
|
| 221 |
|
if (n < 1) |
| 254 |
|
double sum; |
| 255 |
|
register RAY *r; |
| 256 |
|
|
| 257 |
+ |
if (fray == NULL) |
| 258 |
+ |
syntax("ray parameter used in constant expression"); |
| 259 |
+ |
|
| 260 |
|
if (--n < 0) |
| 261 |
|
goto badchan; |
| 262 |
|
|
| 281 |
|
fray->rop[2]*funcxf.xfm[2][n-6] + |
| 282 |
|
funcxf.xfm[3][n-6] ); |
| 283 |
|
|
| 284 |
< |
if (n == 9) { /* distance */ |
| 277 |
< |
|
| 284 |
> |
if (n == 9) { /* total distance */ |
| 285 |
|
sum = fray->rot; |
| 286 |
|
for (r = fray->parent; r != NULL; r = r->parent) |
| 287 |
|
sum += r->rot; |
| 288 |
|
return(sum * funcxf.sca); |
| 289 |
|
|
| 290 |
|
} |
| 291 |
+ |
|
| 292 |
|
if (n == 10) /* dot product (range [-1,1]) */ |
| 293 |
|
return( fray->rod <= -1.0 ? -1.0 : |
| 294 |
|
fray->rod >= 1.0 ? 1.0 : |
| 308 |
|
|
| 309 |
|
if (n < 24) /* k unit vector */ |
| 310 |
|
return(funcxf.xfm[2][n-21] / funcxf.sca); |
| 311 |
+ |
|
| 312 |
+ |
if (n == 24) { /* single ray (shadow) distance */ |
| 313 |
+ |
sum = fray->rot; |
| 314 |
+ |
for (r = fray->parent; r != NULL && r->crtype&SHADOW; |
| 315 |
+ |
r = r->parent) |
| 316 |
+ |
sum += r->rot; |
| 317 |
+ |
return(sum * funcxf.sca); |
| 318 |
+ |
} |
| 319 |
|
badchan: |
| 320 |
|
error(USER, "illegal channel number"); |
| 321 |
|
} |
