7 |
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|
8 |
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#include "ray.h" |
9 |
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#include "random.h" |
10 |
+ |
#include "paths.h" |
11 |
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#include "resolu.h" |
12 |
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|
13 |
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#define NTRUNKBR 4 /* number of branches at trunk */ |
30 |
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COLOR intens; /* output times solid angle */ |
31 |
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} LOSTLIGHT; |
32 |
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|
32 |
– |
extern char *progname; |
33 |
– |
|
33 |
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FVECT scene_cent; /* center of octree cube */ |
34 |
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RREAL scene_rad; /* radius to get outside cube from center */ |
35 |
|
|
115 |
|
VCOPY(myray.rdir, sdir); |
116 |
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myray.rmax = 0.; |
117 |
|
ray_trace(&myray); |
118 |
< |
setcolr(leaf->val, colval(myray.rcol,RED), |
120 |
< |
colval(myray.rcol,GRN), |
121 |
< |
colval(myray.rcol,BLU)); |
118 |
> |
scolor_colr(leaf->val, myray.rcol); |
119 |
|
} |
120 |
|
|
121 |
|
/* Initialize a branch node contained in the given spherical triangle */ |
184 |
|
|
185 |
|
/* Sample sphere using triangular geodesic mesh */ |
186 |
|
TRITREE * |
187 |
< |
geosample(int nsamps) |
187 |
> |
geosample(long nsamps) |
188 |
|
{ |
189 |
|
int depth; |
190 |
|
TRITREE *tree; |
193 |
|
/* figure out depth */ |
194 |
|
if ((nsamps -= 4) < 0) |
195 |
|
error(USER, "minimum number of samples is 4"); |
196 |
< |
nsamps = nsamps*3/NTRUNKBR; /* round up */ |
196 |
> |
nsamps = nsamps*(NTRUNKBR-1)/NTRUNKBR; /* round up */ |
197 |
|
for (depth = 0; nsamps > 1; depth++) |
198 |
|
nsamps >>= 2; |
199 |
|
/* make base tetrahedron */ |
239 |
|
double |
240 |
|
get_threshold(const TRITREE *tree) |
241 |
|
{ |
242 |
+ |
long samptotal = 0; |
243 |
|
long exphisto[256]; |
246 |
– |
long samptotal; |
244 |
|
int i; |
245 |
|
/* compute sample histogram */ |
246 |
< |
memset((void *)exphisto, 0, sizeof(exphisto)); |
246 |
> |
memset(exphisto, 0, sizeof(exphisto)); |
247 |
|
for (i = 0; i < NTRUNKBR; i++) |
248 |
|
get_ehisto(&tree->kid[i], exphisto); |
249 |
|
/* use 98th percentile */ |
352 |
|
if (remaining) |
353 |
|
return; |
354 |
|
/* consolidate empties */ |
355 |
< |
free((void *)node->kid); node->kid = NULL; |
355 |
> |
free(node->kid); node->kid = NULL; |
356 |
|
copycolr(node->val, blkclr); |
357 |
|
node->sd = node->gdv[0]; /* doesn't really matter */ |
358 |
|
} |
384 |
|
if (fdir2diff(thisp->sd,cent) <= maxr2) { |
385 |
|
LOSTLIGHT *mynext = thisp->next; |
386 |
|
addcolor(intens, thisp->intens); |
387 |
< |
free((void *)thisp); |
387 |
> |
free(thisp); |
388 |
|
lastp->next = mynext; |
389 |
|
} else |
390 |
|
lastp = thisp; |
395 |
|
void |
396 |
|
mksources(TRITREE *samptree, double thresh, double maxang) |
397 |
|
{ |
398 |
+ |
#define MAXITER 100 |
399 |
|
const int ethresh = (int)(log(thresh)/log(2.) + (COLXS+.5)); |
400 |
|
const double maxomega = 2.*PI*(1. - cos(PI/180./2.*maxang)); |
401 |
|
const double minintens = .05*thresh*maxomega; |
402 |
+ |
int niter = MAXITER; |
403 |
|
int nsrcs = 0; |
404 |
|
LOSTLIGHT *lostlightlist = NULL; |
405 |
|
int emax; |
425 |
|
*/ |
426 |
|
if (thresh <= FTINY) |
427 |
|
return; |
428 |
< |
for ( ; ; ) { |
428 |
> |
while (niter--) { |
429 |
|
emax = ethresh; /* find brightest unclaimed */ |
430 |
|
startleaf = NULL; |
431 |
|
for (i = 0; i < NTRUNKBR; i++) { |
456 |
|
thisethresh); |
457 |
|
if (normalize(vsum) == .0) |
458 |
|
break; |
459 |
< |
movedist = acos(DOT(vsum,curcent)); |
459 |
> |
movedist = Acos(DOT(vsum,curcent)); |
460 |
|
if (movedist > growstep) { |
461 |
|
VSUB(vsum, vsum, curcent); |
462 |
|
movedist = growstep/VLEN(vsum); |
488 |
|
printf("0\n0\n4 %f %f %f %f\n", |
489 |
|
curcent[0], curcent[1], curcent[2], |
490 |
|
2.*180./PI*currad); |
491 |
+ |
niter = MAXITER; |
492 |
|
} |
493 |
+ |
#undef MAXITER |
494 |
|
} |
495 |
|
|
496 |
|
int |
501 |
|
TRITREE *samptree; |
502 |
|
double thresh = 0; |
503 |
|
int i; |
504 |
< |
|
505 |
< |
progname = argv[0]; |
504 |
> |
|
505 |
> |
fixargv0(argv[0]); /* sets global progname */ |
506 |
> |
|
507 |
|
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
508 |
|
switch (argv[i][1]) { |
509 |
|
case 'd': /* number of samples */ |
556 |
|
} |
557 |
|
|
558 |
|
void |
559 |
< |
eputs(char *s) |
559 |
> |
eputs(const char *s) |
560 |
|
{ |
561 |
|
static int midline = 0; |
562 |
|
|
574 |
|
} |
575 |
|
|
576 |
|
void |
577 |
< |
wputs(char *s) |
577 |
> |
wputs(const char *s) |
578 |
|
{ |
579 |
|
/* no warnings */ |
580 |
|
} |