1 |
– |
/* Copyright (c) 1991 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 |
|
* Routines to do the actual calculation for mkillum |
6 |
|
*/ |
7 |
|
|
8 |
< |
#include "mkillum.h" |
8 |
> |
#include <string.h> |
9 |
|
|
10 |
+ |
#include "mkillum.h" |
11 |
|
#include "face.h" |
14 |
– |
|
12 |
|
#include "cone.h" |
16 |
– |
|
13 |
|
#include "random.h" |
14 |
|
|
15 |
|
|
16 |
< |
o_default(ob, il, rt, nm) /* default illum action */ |
17 |
< |
OBJREC *ob; |
18 |
< |
struct illum_args *il; |
19 |
< |
struct rtproc *rt; |
20 |
< |
char *nm; |
16 |
> |
int o_default(FUN_ARGLIST); |
17 |
> |
int o_face(FUN_ARGLIST); |
18 |
> |
int o_sphere(FUN_ARGLIST); |
19 |
> |
int o_ring(FUN_ARGLIST); |
20 |
> |
void raysamp(float res[3], FVECT org, FVECT dir, struct rtproc *rt); |
21 |
> |
void rayflush(struct rtproc *rt); |
22 |
> |
void mkaxes(FVECT u, FVECT v, FVECT n); |
23 |
> |
void rounddir(FVECT dv, double alt, double azi); |
24 |
> |
void flatdir(FVECT dv, double alt, double azi); |
25 |
> |
|
26 |
> |
|
27 |
> |
int /* XXX type conflict with otypes.h */ |
28 |
> |
o_default( /* default illum action */ |
29 |
> |
OBJREC *ob, |
30 |
> |
struct illum_args *il, |
31 |
> |
struct rtproc *rt, |
32 |
> |
char *nm |
33 |
> |
) |
34 |
|
{ |
35 |
|
sprintf(errmsg, "(%s): cannot make illum for %s \"%s\"", |
36 |
|
nm, ofun[ob->otype].funame, ob->oname); |
37 |
|
error(WARNING, errmsg); |
38 |
|
printobj(il->altmat, ob); |
39 |
+ |
return(1); |
40 |
|
} |
41 |
|
|
42 |
|
|
43 |
< |
o_face(ob, il, rt, nm) /* make an illum face */ |
44 |
< |
OBJREC *ob; |
45 |
< |
struct illum_args *il; |
46 |
< |
struct rtproc *rt; |
47 |
< |
char *nm; |
43 |
> |
int |
44 |
> |
o_face( /* make an illum face */ |
45 |
> |
OBJREC *ob, |
46 |
> |
struct illum_args *il, |
47 |
> |
struct rtproc *rt, |
48 |
> |
char *nm |
49 |
> |
) |
50 |
|
{ |
51 |
|
#define MAXMISS (5*n*il->nsamps) |
52 |
|
int dim[3]; |
63 |
|
fa = getface(ob); |
64 |
|
if (fa->area == 0.0) { |
65 |
|
freeface(ob); |
66 |
< |
o_default(ob, il, rt, nm); |
55 |
< |
return; |
66 |
> |
return(o_default(ob, il, rt, nm)); |
67 |
|
} |
68 |
|
/* set up sampling */ |
69 |
|
if (il->sampdens <= 0) |
77 |
|
distarr = (float *)calloc(n, 3*sizeof(float)); |
78 |
|
if (distarr == NULL) |
79 |
|
error(SYSTEM, "out of memory in o_face"); |
80 |
< |
mkaxes(u, v, fa->norm); |
80 |
> |
/* take first edge longer than sqrt(area) */ |
81 |
> |
for (j = fa->nv-1, i = 0; i < fa->nv; j = i++) { |
82 |
> |
u[0] = VERTEX(fa,i)[0] - VERTEX(fa,j)[0]; |
83 |
> |
u[1] = VERTEX(fa,i)[1] - VERTEX(fa,j)[1]; |
84 |
> |
u[2] = VERTEX(fa,i)[2] - VERTEX(fa,j)[2]; |
85 |
> |
if ((r1 = DOT(u,u)) >= fa->area-FTINY) |
86 |
> |
break; |
87 |
> |
} |
88 |
> |
if (i < fa->nv) { /* got one! -- let's align our axes */ |
89 |
> |
r2 = 1.0/sqrt(r1); |
90 |
> |
u[0] *= r2; u[1] *= r2; u[2] *= r2; |
91 |
> |
fcross(v, fa->norm, u); |
92 |
> |
} else /* oh well, we'll just have to wing it */ |
93 |
> |
mkaxes(u, v, fa->norm); |
94 |
> |
/* now, find limits in (u,v) coordinates */ |
95 |
|
ur[0] = vr[0] = FHUGE; |
96 |
|
ur[1] = vr[1] = -FHUGE; |
97 |
|
for (i = 0; i < fa->nv; i++) { |
129 |
|
objerror(ob, WARNING, "bad aspect"); |
130 |
|
rt->nrays = 0; |
131 |
|
freeface(ob); |
132 |
< |
free((char *)distarr); |
133 |
< |
o_default(ob, il, rt, nm); |
109 |
< |
return; |
132 |
> |
free((void *)distarr); |
133 |
> |
return(o_default(ob, il, rt, nm)); |
134 |
|
} |
135 |
|
for (j = 0; j < 3; j++) |
136 |
|
org[j] += .001*fa->norm[j]; |
147 |
|
printobj(il->altmat, ob); |
148 |
|
/* clean up */ |
149 |
|
freeface(ob); |
150 |
< |
free((char *)distarr); |
150 |
> |
free((void *)distarr); |
151 |
|
#undef MAXMISS |
152 |
+ |
/* XXX we need to return something here. what is it? */ |
153 |
|
} |
154 |
|
|
155 |
|
|
156 |
< |
o_sphere(ob, il, rt, nm) /* make an illum sphere */ |
157 |
< |
register OBJREC *ob; |
158 |
< |
struct illum_args *il; |
159 |
< |
struct rtproc *rt; |
160 |
< |
char *nm; |
156 |
> |
int |
157 |
> |
o_sphere( /* make an illum sphere */ |
158 |
> |
register OBJREC *ob, |
159 |
> |
struct illum_args *il, |
160 |
> |
struct rtproc *rt, |
161 |
> |
char *nm |
162 |
> |
) |
163 |
|
{ |
164 |
|
int dim[3]; |
165 |
|
int n, nalt, nazi; |
176 |
|
nalt = nazi = 1; |
177 |
|
else { |
178 |
|
n = 4.*PI * il->sampdens; |
179 |
< |
nalt = sqrt(n/PI) + .5; |
180 |
< |
nazi = PI*nalt + .5; |
179 |
> |
nalt = sqrt(2./PI*n) + .5; |
180 |
> |
nazi = PI/2.*nalt + .5; |
181 |
|
} |
182 |
|
n = nalt*nazi; |
183 |
|
distarr = (float *)calloc(n, 3*sizeof(float)); |
220 |
|
} else |
221 |
|
printobj(il->altmat, ob); |
222 |
|
/* clean up */ |
223 |
< |
free((char *)distarr); |
223 |
> |
free((void *)distarr); |
224 |
> |
return(1); |
225 |
|
} |
226 |
|
|
227 |
|
|
228 |
< |
o_ring(ob, il, rt, nm) /* make an illum ring */ |
229 |
< |
OBJREC *ob; |
230 |
< |
struct illum_args *il; |
231 |
< |
struct rtproc *rt; |
232 |
< |
char *nm; |
228 |
> |
int |
229 |
> |
o_ring( /* make an illum ring */ |
230 |
> |
OBJREC *ob, |
231 |
> |
struct illum_args *il, |
232 |
> |
struct rtproc *rt, |
233 |
> |
char *nm |
234 |
> |
) |
235 |
|
{ |
236 |
|
int dim[3]; |
237 |
|
int n, nalt, nazi; |
276 |
|
r1 = r3*cos(r2); |
277 |
|
r2 = r3*sin(r2); |
278 |
|
for (j = 0; j < 3; j++) |
279 |
< |
org[j] = CO_P0(co)[j] + r1*u[j] + r1*v[j] + |
279 |
> |
org[j] = CO_P0(co)[j] + r1*u[j] + r2*v[j] + |
280 |
|
.001*co->ad[j]; |
281 |
|
|
282 |
|
/* send sample */ |
292 |
|
printobj(il->altmat, ob); |
293 |
|
/* clean up */ |
294 |
|
freecone(ob); |
295 |
< |
free((char *)distarr); |
295 |
> |
free((void *)distarr); |
296 |
> |
return(1); |
297 |
|
} |
298 |
|
|
299 |
|
|
300 |
< |
raysamp(res, org, dir, rt) /* compute a ray sample */ |
301 |
< |
float res[3]; |
302 |
< |
FVECT org, dir; |
303 |
< |
register struct rtproc *rt; |
300 |
> |
void |
301 |
> |
raysamp( /* compute a ray sample */ |
302 |
> |
float res[3], |
303 |
> |
FVECT org, |
304 |
> |
FVECT dir, |
305 |
> |
register struct rtproc *rt |
306 |
> |
) |
307 |
|
{ |
308 |
|
register float *fp; |
309 |
|
|
316 |
|
} |
317 |
|
|
318 |
|
|
319 |
< |
rayflush(rt) /* flush buffered rays */ |
320 |
< |
register struct rtproc *rt; |
319 |
> |
void |
320 |
> |
rayflush( /* flush buffered rays */ |
321 |
> |
register struct rtproc *rt |
322 |
> |
) |
323 |
|
{ |
324 |
|
register int i; |
325 |
|
|
326 |
|
if (rt->nrays <= 0) |
327 |
|
return; |
328 |
< |
bzero(rt->buf+6*rt->nrays, 6*sizeof(float)); |
328 |
> |
memset(rt->buf+6*rt->nrays, '\0', 6*sizeof(float)); |
329 |
|
errno = 0; |
330 |
< |
if ( process(rt->pd, (char *)rt->buf, (char *)rt->buf, |
331 |
< |
3*sizeof(float)*rt->nrays, |
330 |
> |
if ( process(&(rt->pd), (char *)rt->buf, (char *)rt->buf, |
331 |
> |
3*sizeof(float)*(rt->nrays+1), |
332 |
|
6*sizeof(float)*(rt->nrays+1)) < |
333 |
< |
3*sizeof(float)*rt->nrays ) |
333 |
> |
3*sizeof(float)*(rt->nrays+1) ) |
334 |
|
error(SYSTEM, "error reading from rtrace process"); |
335 |
|
i = rt->nrays; |
336 |
|
while (i--) { |
342 |
|
} |
343 |
|
|
344 |
|
|
345 |
< |
mkaxes(u, v, n) /* compute u and v to go with n */ |
346 |
< |
FVECT u, v, n; |
345 |
> |
void |
346 |
> |
mkaxes( /* compute u and v to go with n */ |
347 |
> |
FVECT u, |
348 |
> |
FVECT v, |
349 |
> |
FVECT n |
350 |
> |
) |
351 |
|
{ |
352 |
|
register int i; |
353 |
|
|
362 |
|
} |
363 |
|
|
364 |
|
|
365 |
< |
rounddir(dv, alt, azi) /* compute uniform spherical direction */ |
366 |
< |
register FVECT dv; |
367 |
< |
double alt, azi; |
365 |
> |
void |
366 |
> |
rounddir( /* compute uniform spherical direction */ |
367 |
> |
register FVECT dv, |
368 |
> |
double alt, |
369 |
> |
double azi |
370 |
> |
) |
371 |
|
{ |
372 |
|
double d1, d2; |
373 |
|
|
379 |
|
} |
380 |
|
|
381 |
|
|
382 |
< |
flatdir(dv, alt, azi) /* compute uniform hemispherical direction */ |
383 |
< |
register FVECT dv; |
384 |
< |
double alt, azi; |
382 |
> |
void |
383 |
> |
flatdir( /* compute uniform hemispherical direction */ |
384 |
> |
register FVECT dv, |
385 |
> |
double alt, |
386 |
> |
double azi |
387 |
> |
) |
388 |
|
{ |
389 |
|
double d1, d2; |
390 |
|
|