12 |
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#include "cone.h" |
13 |
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#include "random.h" |
14 |
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|
15 |
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//void o_default(OBJREC *ob, struct illum_args *il, struct rtproc *rt, char *nm); |
16 |
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void o_face(OBJREC *ob, struct illum_args *il, struct rtproc *rt, char *nm); |
17 |
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void o_sphere(OBJREC *ob, struct illum_args *il, struct rtproc *rt, char *nm); |
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void o_ring(OBJREC *ob, struct illum_args *il, struct rtproc *rt, char *nm); |
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void raysamp(float res[3], FVECT org, FVECT dir, struct rtproc *rt); |
20 |
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void rayflush(struct rtproc *rt); |
21 |
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void mkaxes(FVECT u, FVECT v, FVECT n); |
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void rounddir(FVECT dv, double alt, double azi); |
23 |
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void flatdir(FVECT dv, double alt, double azi); |
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|
16 |
+ |
static void mkaxes(FVECT u, FVECT v, FVECT n); |
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+ |
static void rounddir(FVECT dv, double alt, double azi); |
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+ |
static void flatdir(FVECT dv, double alt, double azi); |
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|
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|
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static COLORV * distarr = NULL; /* distribution array */ |
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+ |
static int distsiz = 0; |
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+ |
|
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|
25 |
+ |
static void |
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+ |
newdist( /* allocate & clear distribution array */ |
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+ |
int siz |
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+ |
) |
29 |
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{ |
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if (siz == 0) { |
31 |
+ |
if (distsiz > 0) |
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free((void *)distarr); |
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distarr = NULL; |
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distsiz = 0; |
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return; |
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} |
37 |
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if (distsiz < siz) { |
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+ |
free((void *)distarr); |
39 |
+ |
distarr = (COLORV *)malloc(sizeof(COLORV)*3*siz); |
40 |
+ |
if (distarr == NULL) |
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+ |
error(SYSTEM, "Out of memory in distalloc"); |
42 |
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distsiz = siz; |
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+ |
} |
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memset(distarr, '\0', sizeof(COLORV)*3*siz); |
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} |
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+ |
|
47 |
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|
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static int |
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process_ray(RAY *r, int rv) |
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{ |
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+ |
COLORV *colp; |
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+ |
|
53 |
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if (rv == 0) |
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return(0); |
55 |
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if (rv < 0) |
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error(USER, "Ray tracing process died"); |
57 |
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if (r->rno >= distsiz) |
58 |
+ |
error(INTERNAL, "Bad returned index in process_ray"); |
59 |
+ |
colp = &distarr[r->rno * 3]; |
60 |
+ |
addcolor(colp, r->rcol); |
61 |
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return(1); |
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} |
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|
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|
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static void |
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raysamp( /* queue a ray sample */ |
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int ndx, |
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FVECT org, |
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FVECT dir |
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) |
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{ |
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RAY myRay; |
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int rv; |
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|
75 |
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if ((ndx < 0) | (ndx >= distsiz)) |
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error(INTERNAL, "Bad index in raysamp"); |
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VCOPY(myRay.rorg, org); |
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VCOPY(myRay.rdir, dir); |
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myRay.rmax = .0; |
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rayorigin(&myRay, PRIMARY, NULL, NULL); |
81 |
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myRay.rno = ndx; |
82 |
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/* queue ray, check result */ |
83 |
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process_ray(&myRay, ray_pqueue(&myRay)); |
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} |
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|
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|
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static void |
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rayclean() /* finish all pending rays */ |
89 |
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{ |
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RAY myRay; |
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|
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while (process_ray(&myRay, ray_presult(&myRay, 0))) |
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; |
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} |
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|
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|
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int /* XXX type conflict with otypes.h */ |
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< |
o_default( /* default illum action */ |
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> |
my_default( /* default illum action */ |
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OBJREC *ob, |
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struct illum_args *il, |
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struct rtproc *rt, |
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char *nm |
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) |
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{ |
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nm, ofun[ob->otype].funame, ob->oname); |
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error(WARNING, errmsg); |
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printobj(il->altmat, ob); |
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return(1); |
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} |
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|
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|
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< |
void |
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< |
o_face( /* make an illum face */ |
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> |
int |
113 |
> |
my_face( /* make an illum face */ |
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OBJREC *ob, |
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struct illum_args *il, |
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struct rtproc *rt, |
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char *nm |
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) |
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{ |
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#define MAXMISS (5*n*il->nsamps) |
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int dim[3]; |
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int n, nalt, nazi, h; |
52 |
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float *distarr; |
122 |
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double sp[2], r1, r2; |
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FVECT dn, org, dir; |
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FVECT u, v; |
130 |
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fa = getface(ob); |
131 |
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if (fa->area == 0.0) { |
132 |
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freeface(ob); |
133 |
< |
o_default(ob, il, rt, nm); |
65 |
< |
return; |
133 |
> |
return(o_default(ob, il, nm)); |
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} |
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/* set up sampling */ |
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if (il->sampdens <= 0) |
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nazi = PI*nalt + .5; |
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} |
143 |
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n = nalt*nazi; |
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< |
distarr = (float *)calloc(n, 3*sizeof(float)); |
77 |
< |
if (distarr == NULL) |
78 |
< |
error(SYSTEM, "out of memory in o_face"); |
144 |
> |
newdist(n); |
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/* take first edge longer than sqrt(area) */ |
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for (j = fa->nv-1, i = 0; i < fa->nv; j = i++) { |
147 |
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u[0] = VERTEX(fa,i)[0] - VERTEX(fa,j)[0]; |
192 |
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} while (!inface(org, fa) && nmisses++ < MAXMISS); |
193 |
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if (nmisses > MAXMISS) { |
194 |
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objerror(ob, WARNING, "bad aspect"); |
195 |
< |
rt->nrays = 0; |
195 |
> |
rayclean(); |
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freeface(ob); |
197 |
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free((void *)distarr); |
198 |
< |
o_default(ob, il, rt, nm); |
133 |
< |
return; |
198 |
> |
return(o_default(ob, il, nm)); |
199 |
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} |
200 |
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for (j = 0; j < 3; j++) |
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org[j] += .001*fa->norm[j]; |
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/* send sample */ |
203 |
< |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
203 |
> |
raysamp(dim[1]*nazi+dim[2], org, dir); |
204 |
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} |
205 |
< |
rayflush(rt); |
205 |
> |
rayclean(); |
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/* write out the face and its distribution */ |
207 |
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if (average(il, distarr, nalt*nazi)) { |
208 |
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if (il->sampdens > 0) |
212 |
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printobj(il->altmat, ob); |
213 |
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/* clean up */ |
214 |
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freeface(ob); |
215 |
< |
free((void *)distarr); |
215 |
> |
return(0); |
216 |
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#undef MAXMISS |
217 |
|
} |
218 |
|
|
219 |
|
|
220 |
< |
void |
221 |
< |
o_sphere( /* make an illum sphere */ |
220 |
> |
int |
221 |
> |
my_sphere( /* make an illum sphere */ |
222 |
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register OBJREC *ob, |
223 |
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struct illum_args *il, |
159 |
– |
struct rtproc *rt, |
224 |
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char *nm |
225 |
|
) |
226 |
|
{ |
227 |
|
int dim[3]; |
228 |
|
int n, nalt, nazi; |
165 |
– |
float *distarr; |
229 |
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double sp[4], r1, r2, r3; |
230 |
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FVECT org, dir; |
231 |
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FVECT u, v; |
242 |
|
nazi = PI/2.*nalt + .5; |
243 |
|
} |
244 |
|
n = nalt*nazi; |
245 |
< |
distarr = (float *)calloc(n, 3*sizeof(float)); |
183 |
< |
if (distarr == NULL) |
184 |
< |
error(SYSTEM, "out of memory in o_sphere"); |
245 |
> |
newdist(n); |
246 |
|
dim[0] = random(); |
247 |
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/* sample sphere */ |
248 |
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for (dim[1] = 0; dim[1] < nalt; dim[1]++) |
267 |
|
dir[j] = -dir[j]; |
268 |
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} |
269 |
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/* send sample */ |
270 |
< |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
270 |
> |
raysamp(dim[1]*nazi+dim[2], org, dir); |
271 |
|
} |
272 |
< |
rayflush(rt); |
272 |
> |
rayclean(); |
273 |
|
/* write out the sphere and its distribution */ |
274 |
|
if (average(il, distarr, nalt*nazi)) { |
275 |
|
if (il->sampdens > 0) |
280 |
|
} else |
281 |
|
printobj(il->altmat, ob); |
282 |
|
/* clean up */ |
283 |
< |
free((void *)distarr); |
283 |
> |
return(1); |
284 |
|
} |
285 |
|
|
286 |
|
|
287 |
< |
void |
288 |
< |
o_ring( /* make an illum ring */ |
287 |
> |
int |
288 |
> |
my_ring( /* make an illum ring */ |
289 |
|
OBJREC *ob, |
290 |
|
struct illum_args *il, |
230 |
– |
struct rtproc *rt, |
291 |
|
char *nm |
292 |
|
) |
293 |
|
{ |
294 |
|
int dim[3]; |
295 |
|
int n, nalt, nazi; |
236 |
– |
float *distarr; |
296 |
|
double sp[4], r1, r2, r3; |
297 |
|
FVECT dn, org, dir; |
298 |
|
FVECT u, v; |
309 |
|
nazi = PI*nalt + .5; |
310 |
|
} |
311 |
|
n = nalt*nazi; |
312 |
< |
distarr = (float *)calloc(n, 3*sizeof(float)); |
254 |
< |
if (distarr == NULL) |
255 |
< |
error(SYSTEM, "out of memory in o_ring"); |
312 |
> |
newdist(n); |
313 |
|
mkaxes(u, v, co->ad); |
314 |
|
dim[0] = random(); |
315 |
|
/* sample disk */ |
335 |
|
.001*co->ad[j]; |
336 |
|
|
337 |
|
/* send sample */ |
338 |
< |
raysamp(distarr+3*(dim[1]*nazi+dim[2]), org, dir, rt); |
338 |
> |
raysamp(dim[1]*nazi+dim[2], org, dir); |
339 |
|
} |
340 |
< |
rayflush(rt); |
340 |
> |
rayclean(); |
341 |
|
/* write out the ring and its distribution */ |
342 |
|
if (average(il, distarr, nalt*nazi)) { |
343 |
|
if (il->sampdens > 0) |
347 |
|
printobj(il->altmat, ob); |
348 |
|
/* clean up */ |
349 |
|
freecone(ob); |
350 |
< |
free((void *)distarr); |
350 |
> |
return(1); |
351 |
|
} |
352 |
|
|
353 |
|
|
354 |
< |
void |
298 |
< |
raysamp( /* compute a ray sample */ |
299 |
< |
float res[3], |
300 |
< |
FVECT org, |
301 |
< |
FVECT dir, |
302 |
< |
register struct rtproc *rt |
303 |
< |
) |
304 |
< |
{ |
305 |
< |
register float *fp; |
306 |
< |
|
307 |
< |
if (rt->nrays == rt->bsiz) |
308 |
< |
rayflush(rt); |
309 |
< |
rt->dest[rt->nrays] = res; |
310 |
< |
fp = rt->buf + 6*rt->nrays++; |
311 |
< |
*fp++ = org[0]; *fp++ = org[1]; *fp++ = org[2]; |
312 |
< |
*fp++ = dir[0]; *fp++ = dir[1]; *fp = dir[2]; |
313 |
< |
} |
314 |
< |
|
315 |
< |
|
316 |
< |
void |
317 |
< |
rayflush( /* flush buffered rays */ |
318 |
< |
register struct rtproc *rt |
319 |
< |
) |
320 |
< |
{ |
321 |
< |
register int i; |
322 |
< |
|
323 |
< |
if (rt->nrays <= 0) |
324 |
< |
return; |
325 |
< |
memset(rt->buf+6*rt->nrays, '\0', 6*sizeof(float)); |
326 |
< |
errno = 0; |
327 |
< |
if ( process(&(rt->pd), (char *)rt->buf, (char *)rt->buf, |
328 |
< |
3*sizeof(float)*(rt->nrays+1), |
329 |
< |
6*sizeof(float)*(rt->nrays+1)) < |
330 |
< |
3*sizeof(float)*(rt->nrays+1) ) |
331 |
< |
error(SYSTEM, "error reading from rtrace process"); |
332 |
< |
i = rt->nrays; |
333 |
< |
while (i--) { |
334 |
< |
rt->dest[i][0] += rt->buf[3*i]; |
335 |
< |
rt->dest[i][1] += rt->buf[3*i+1]; |
336 |
< |
rt->dest[i][2] += rt->buf[3*i+2]; |
337 |
< |
} |
338 |
< |
rt->nrays = 0; |
339 |
< |
} |
340 |
< |
|
341 |
< |
|
342 |
< |
void |
354 |
> |
static void |
355 |
|
mkaxes( /* compute u and v to go with n */ |
356 |
|
FVECT u, |
357 |
|
FVECT v, |
371 |
|
} |
372 |
|
|
373 |
|
|
374 |
< |
void |
374 |
> |
static void |
375 |
|
rounddir( /* compute uniform spherical direction */ |
376 |
|
register FVECT dv, |
377 |
|
double alt, |
388 |
|
} |
389 |
|
|
390 |
|
|
391 |
< |
void |
391 |
> |
static void |
392 |
|
flatdir( /* compute uniform hemispherical direction */ |
393 |
|
register FVECT dv, |
394 |
|
double alt, |