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" |
15 |
|
|
16 |
|
|
17 |
|
#define INITFILE "rayinit.cal" |
21 |
– |
#define REFVNAME "`FILE_REFCNT" |
18 |
|
#define CALSUF ".cal" |
19 |
|
#define LCALSUF 4 |
20 |
+ |
char REFVNAME[] = "`FILE_REFCNT"; |
21 |
|
|
22 |
|
XF unitxf = { /* identity transform */ |
23 |
|
{{1.0, 0.0, 0.0, 0.0}, |
31 |
|
static OBJREC *fobj = NULL; /* current function object */ |
32 |
|
static RAY *fray = NULL; /* current function ray */ |
33 |
|
|
34 |
< |
static double l_erf(), l_erfc(), l_arg(); |
34 |
> |
static double l_erf(char *), l_erfc(char *), l_arg(char *); |
35 |
|
|
36 |
|
|
37 |
|
MFUNC * |
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); |
70 |
|
setnoisefuncs(); |
71 |
+ |
setprismfuncs(); |
72 |
|
loadfunc(initfile); |
73 |
|
initfile[0] = '\0'; |
74 |
|
} |
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; |
170 |
|
{ |
171 |
< |
static long lastrno = -1; |
171 |
> |
static unsigned long lastrno = ~0; |
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 */ |
185 |
|
funcxf.sca = r->rox->b.sca * f->b->sca; |
186 |
|
multmat4(funcxf.xfm, r->rox->b.xfm, f->b->xfm); |
187 |
|
} else |
188 |
< |
copystruct(&funcxf, &r->rox->b); |
188 |
> |
funcxf = r->rox->b; |
189 |
|
else |
190 |
< |
copystruct(&funcxf, f->b); |
190 |
> |
funcxf = *(f->b); |
191 |
|
lastrno = r->rno; |
192 |
|
eclock++; /* notify expression evaluator */ |
193 |
|
return(1); |
194 |
|
} |
195 |
|
|
196 |
|
|
197 |
+ |
void |
198 |
|
loadfunc(fname) /* load definition file */ |
199 |
|
char *fname; |
200 |
|
{ |
198 |
– |
extern char *libpath; /* library search path */ |
201 |
|
char *ffname; |
202 |
|
|
203 |
< |
if ((ffname = getpath(fname, libpath, 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 |
|
} |
209 |
|
|
210 |
|
|
211 |
|
static double |
212 |
< |
l_arg() /* return nth real argument */ |
212 |
> |
l_arg(char *nm) /* return nth real argument */ |
213 |
|
{ |
212 |
– |
extern double argument(); |
214 |
|
register int n; |
215 |
|
|
216 |
|
if (fobj == NULL) |
230 |
|
|
231 |
|
|
232 |
|
static double |
233 |
< |
l_erf() /* error function */ |
233 |
> |
l_erf(char *nm) /* error function */ |
234 |
|
{ |
235 |
|
extern double erf(); |
236 |
|
|
239 |
|
|
240 |
|
|
241 |
|
static double |
242 |
< |
l_erfc() /* cumulative error function */ |
242 |
> |
l_erfc(char *nm) /* cumulative error function */ |
243 |
|
{ |
244 |
|
extern double erfc(); |
245 |
|
|
251 |
|
chanvalue(n) /* return channel n to calcomp */ |
252 |
|
register int n; |
253 |
|
{ |
253 |
– |
double sum; |
254 |
– |
register RAY *r; |
255 |
– |
|
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; |
285 |
< |
for (r = fray->parent; r != NULL; r = r->parent) |
286 |
< |
sum += r->rot; |
287 |
< |
return(sum * funcxf.sca); |
281 |
> |
if (n == 9) /* total distance */ |
282 |
> |
return(raydist(fray,PRIMARY) * funcxf.sca); |
283 |
|
|
289 |
– |
} |
290 |
– |
|
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; |
316 |
< |
return(sum * funcxf.sca); |
317 |
< |
} |
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 |
|
} |