9 |
|
|
10 |
|
#include "ray.h" |
11 |
|
|
12 |
+ |
#include "paths.h" |
13 |
+ |
|
14 |
|
#include "otypes.h" |
15 |
|
|
16 |
|
#include "func.h" |
33 |
|
static OBJREC *fobj = NULL; /* current function object */ |
34 |
|
static RAY *fray = NULL; /* current function ray */ |
35 |
|
|
36 |
< |
static double l_erf(), l_erfc(), l_arg(); |
36 |
> |
static double l_erf(char *), l_erfc(char *), l_arg(char *); |
37 |
|
|
38 |
|
|
39 |
|
MFUNC * |
65 |
|
scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
66 |
|
scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
67 |
|
scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
68 |
< |
scompile("Lu=$25;Lv=$26;", NULL, 0); |
68 |
> |
scompile("Lu=$26;Lv=$27;", NULL, 0); |
69 |
|
funset("arg", 1, '=', l_arg); |
70 |
|
funset("erf", 1, ':', l_erf); |
71 |
|
funset("erfc", 1, ':', l_erfc); |
187 |
|
funcxf.sca = r->rox->b.sca * f->b->sca; |
188 |
|
multmat4(funcxf.xfm, r->rox->b.xfm, f->b->xfm); |
189 |
|
} else |
190 |
< |
copystruct(&funcxf, &r->rox->b); |
190 |
> |
funcxf = r->rox->b; |
191 |
|
else |
192 |
< |
copystruct(&funcxf, f->b); |
192 |
> |
funcxf = *(f->b); |
193 |
|
lastrno = r->rno; |
194 |
|
eclock++; /* notify expression evaluator */ |
195 |
|
return(1); |
202 |
|
{ |
203 |
|
char *ffname; |
204 |
|
|
205 |
< |
if ((ffname = getpath(fname, getlibpath(), R_OK)) == NULL) { |
205 |
> |
if ((ffname = getpath(fname, getrlibpath(), R_OK)) == NULL) { |
206 |
|
sprintf(errmsg, "cannot find function file \"%s\"", fname); |
207 |
|
error(USER, errmsg); |
208 |
|
} |
211 |
|
|
212 |
|
|
213 |
|
static double |
214 |
< |
l_arg() /* return nth real argument */ |
214 |
> |
l_arg(char *nm) /* return nth real argument */ |
215 |
|
{ |
216 |
|
register int n; |
217 |
|
|
232 |
|
|
233 |
|
|
234 |
|
static double |
235 |
< |
l_erf() /* error function */ |
235 |
> |
l_erf(char *nm) /* error function */ |
236 |
|
{ |
237 |
|
extern double erf(); |
238 |
|
|
241 |
|
|
242 |
|
|
243 |
|
static double |
244 |
< |
l_erfc() /* cumulative error function */ |
244 |
> |
l_erfc(char *nm) /* cumulative error function */ |
245 |
|
{ |
246 |
|
extern double erfc(); |
247 |
|
|
259 |
|
if (--n < 0) |
260 |
|
goto badchan; |
261 |
|
|
262 |
< |
if (n < 3) /* ray direction */ |
262 |
> |
if (n <= 2) /* ray direction */ |
263 |
|
|
264 |
|
return( ( fray->rdir[0]*funcxf.xfm[0][n] + |
265 |
|
fray->rdir[1]*funcxf.xfm[1][n] + |
266 |
|
fray->rdir[2]*funcxf.xfm[2][n] ) |
267 |
|
/ funcxf.sca ); |
268 |
|
|
269 |
< |
if (n < 6) /* surface normal */ |
269 |
> |
if (n <= 5) /* surface normal */ |
270 |
|
|
271 |
|
return( ( fray->ron[0]*funcxf.xfm[0][n-3] + |
272 |
|
fray->ron[1]*funcxf.xfm[1][n-3] + |
273 |
|
fray->ron[2]*funcxf.xfm[2][n-3] ) |
274 |
|
/ funcxf.sca ); |
275 |
|
|
276 |
< |
if (n < 9) /* intersection */ |
276 |
> |
if (n <= 8) /* intersection */ |
277 |
|
|
278 |
|
return( fray->rop[0]*funcxf.xfm[0][n-6] + |
279 |
|
fray->rop[1]*funcxf.xfm[1][n-6] + |
291 |
|
if (n == 11) /* scale */ |
292 |
|
return(funcxf.sca); |
293 |
|
|
294 |
< |
if (n < 15) /* origin */ |
294 |
> |
if (n <= 14) /* origin */ |
295 |
|
return(funcxf.xfm[3][n-12]); |
296 |
|
|
297 |
< |
if (n < 18) /* i unit vector */ |
297 |
> |
if (n <= 17) /* i unit vector */ |
298 |
|
return(funcxf.xfm[0][n-15] / funcxf.sca); |
299 |
|
|
300 |
< |
if (n < 21) /* j unit vector */ |
301 |
< |
return(funcxf.xfm[1][n-15] / funcxf.sca); |
300 |
> |
if (n <= 20) /* j unit vector */ |
301 |
> |
return(funcxf.xfm[1][n-18] / funcxf.sca); |
302 |
|
|
303 |
< |
if (n < 24) /* k unit vector */ |
303 |
> |
if (n <= 23) /* k unit vector */ |
304 |
|
return(funcxf.xfm[2][n-21] / funcxf.sca); |
305 |
|
|
306 |
< |
if (n < 25) /* single ray (shadow) distance */ |
306 |
> |
if (n == 24) /* single ray (shadow) distance */ |
307 |
|
return((fray->rot+raydist(fray->parent,SHADOW)) * funcxf.sca); |
308 |
|
|
309 |
< |
if (n < 27) /* local (u,v) coordinates */ |
310 |
< |
return(fray->uv[n-26]); |
309 |
> |
if (n <= 26) /* local (u,v) coordinates */ |
310 |
> |
return(fray->uv[n-25]); |
311 |
|
badchan: |
312 |
|
error(USER, "illegal channel number"); |
313 |
|
return(0.0); |