14 |
|
#include <GL/glx.h> |
15 |
|
#include <GL/glu.h> |
16 |
|
|
17 |
– |
#include "random.h" |
17 |
|
#include "rhd_odraw.h" |
18 |
|
|
19 |
|
#ifndef DEPTHEPS |
25 |
|
#ifndef SFREEFRAC |
26 |
|
#define SFREEFRAC 0.2 /* fraction to free at a time */ |
27 |
|
#endif |
28 |
+ |
#ifndef REDRAWTHRESH |
29 |
+ |
#define REDRAWTHRESH 10240 /* number of samples for dissolve */ |
30 |
+ |
#endif |
31 |
|
#ifndef MAXFAN |
32 |
|
#define MAXFAN 32 /* maximum arms in a triangle fan */ |
33 |
|
#endif |
146 |
|
odView[i].bmap[j].nused = 0; |
147 |
|
} |
148 |
|
odView[i].snext = nextsamp; |
149 |
+ |
odView[i].n2redraw = 0; |
150 |
|
} |
151 |
|
CLR4ALL(odS.redraw, odS.nsamp); /* clear redraw flags */ |
152 |
|
for (i = odS.nsamp; i--; ) { /* clear values */ |
192 |
|
if (CHK4(odView[vn].pmap, vh*odView[vn].hhi + hh)) |
193 |
|
i = bp->first + bp->nsamp; |
194 |
|
else |
195 |
< |
i = -1; |
195 |
> |
i = 0; |
196 |
|
while (i-- > bp->first) |
197 |
|
if (hh == odS.ip[i][0] && vh == odS.ip[i][1]) { /* found it! */ |
198 |
|
/* search free list for it */ |
207 |
|
bp->nused++; |
208 |
|
goto gotit; |
209 |
|
} |
210 |
< |
if (prox >= 0.999*odS.closeness(i)) |
210 |
> |
if (prox >= 0.99*odS.closeness(i)) |
211 |
|
return(-1); /* previous sample is fine */ |
212 |
|
goto gotit; |
213 |
|
} |
211 |
– |
DCHECK(i>=-1, WARNING, "pixel in presence map not found in block"); |
214 |
|
if (bp->free != ENDFREE) { /* allocate from free list */ |
215 |
|
i = bp->free; |
216 |
|
if (odS.ip[i][0] >= 0 & odS.ip[i][1] >= 0) |
307 |
|
else /* else map it now */ |
308 |
|
tmMapPixels(odS.rgb[id], &odS.brt[id], odS.chr[id], 1); |
309 |
|
SET4(odS.redraw, id); /* mark for redraw */ |
310 |
+ |
odView[i].n2redraw++; |
311 |
|
} |
312 |
|
} |
313 |
|
|
321 |
|
} |
322 |
|
|
323 |
|
|
324 |
+ |
odRedrawAll() /* mark all samples for redraw */ |
325 |
+ |
{ |
326 |
+ |
register int i; |
327 |
+ |
|
328 |
+ |
if ((needmapping&(NEWMAP|NEWRGB)) == (NEWMAP|NEWRGB)) |
329 |
+ |
return; /* will be called later, anyway */ |
330 |
+ |
for (i = odS.nsamp; i--; ) |
331 |
+ |
if (odS.ip[i][0] >= 0) |
332 |
+ |
SET4(odS.redraw, i); |
333 |
+ |
/* not right, but not important */ |
334 |
+ |
for (i = 0; i < odNViews; i++) |
335 |
+ |
odView[i].n2redraw = odView[i].snext - odView[i].sfirst; |
336 |
+ |
} |
337 |
+ |
|
338 |
+ |
|
339 |
|
odRedraw(vn, hmin, vmin, hmax, vmax) /* redraw view region */ |
340 |
|
int vn, hmin, vmin, hmax, vmax; |
341 |
|
{ |
362 |
|
for (j = vmin; j <= vmax; j++) { |
363 |
|
bp = odView[vn].bmap + j*odView[vn].hlow + i; |
364 |
|
for (k = bp->nsamp; k--; ) |
365 |
< |
if (odS.ip[bp->first+k][0] >= 0) |
365 |
> |
if (odS.ip[bp->first+k][0] >= 0) { |
366 |
|
SET4(odS.redraw, bp->first+k); |
367 |
+ |
odView[vn].n2redraw++; |
368 |
+ |
} |
369 |
|
} |
370 |
|
} |
371 |
|
|
446 |
|
odUpdate(vn) /* update this view */ |
447 |
|
int vn; |
448 |
|
{ |
449 |
< |
register int i, j; |
449 |
> |
static short primes[] = {9431,6803,4177,2659,1609,887,587,251,47,1}; |
450 |
> |
int myprime; |
451 |
> |
register int i, n; |
452 |
|
|
453 |
|
DCHECK(vn<0 | vn>=odNViews, CONSISTENCY, |
454 |
|
"bad view number in odUpdate"); |
457 |
|
if (needmapping & NEWMAP) { |
458 |
|
if (needmapping & NEWHIST) |
459 |
|
tmClearHisto(); |
460 |
+ |
needmapping &= ~NEWHIST; |
461 |
|
if (tmAddHisto(odS.brt,odS.nsamp,1) != TM_E_OK) |
462 |
|
return; |
463 |
|
if (tmComputeMapping(0.,0.,0.) != TM_E_OK) |
464 |
|
return; |
465 |
< |
for (i = odS.nsamp; i--; ) /* redraw all */ |
466 |
< |
if (odS.ip[i][0] >= 0) |
444 |
< |
SET4(odS.redraw, i); |
465 |
> |
needmapping &= ~NEWMAP; |
466 |
> |
odRedrawAll(); /* redraw everything */ |
467 |
|
} |
468 |
|
if (tmMapPixels(odS.rgb,odS.brt,odS.chr,odS.nsamp) != TM_E_OK) |
469 |
|
return; |
470 |
< |
needmapping = 0; /* reset flag */ |
470 |
> |
needmapping &= ~NEWRGB; |
471 |
|
} |
472 |
< |
/* this code segment was too slow */ |
473 |
< |
#if 0 |
474 |
< |
for (i = odView[vn].sfirst; i < odView[vn].snext; i++) |
472 |
> |
if (odView[vn].n2redraw <= 0) |
473 |
> |
return; |
474 |
> |
#if REDRAWTHRESH |
475 |
> |
if (odView[vn].n2redraw < REDRAWTHRESH) |
476 |
> |
goto quickdraw; |
477 |
> |
/* pick a good prime step size */ |
478 |
> |
n = odView[vn].snext - odView[vn].sfirst; |
479 |
> |
for (i = 0; primes[i]<<5 >= n; i++) |
480 |
> |
; |
481 |
> |
while ((myprime = primes[i++]) > 1) |
482 |
> |
if (n % myprime) |
483 |
> |
break; |
484 |
> |
/* dissolve in new samples */ |
485 |
> |
for (i = odView[vn].sfirst; n-- > 0; i += myprime) { |
486 |
> |
if (i >= odView[vn].snext) |
487 |
> |
i -= odView[vn].snext - odView[vn].sfirst; |
488 |
|
if (CHK4(odS.redraw, i)) { |
489 |
|
odDrawSamp(vn, i); |
490 |
|
CLR4(odS.redraw, i); |
491 |
|
} |
492 |
+ |
} |
493 |
+ |
odView[vn].n2redraw = 0; |
494 |
+ |
return; |
495 |
+ |
quickdraw: /* quicker sparse flag checking */ |
496 |
|
#endif |
497 |
< |
/* redraw samples at each end */ |
498 |
< |
for (i = odView[vn].sfirst; i < odView[vn].sfirst+31; i++) |
497 |
> |
/* redraw samples at end */ |
498 |
> |
for (i = odView[vn].snext-31; i < odView[vn].snext; i++) |
499 |
|
if (CHK4(odS.redraw, i)) { |
500 |
|
odDrawSamp(vn, i); |
501 |
|
CLR4(odS.redraw, i); |
502 |
|
} |
503 |
< |
for (i = odView[vn].snext-31; i < odView[vn].snext; i++) |
503 |
> |
/* faster flag checks in middle */ |
504 |
> |
for (n = odView[vn].snext>>5; n-- > (odView[vn].sfirst+0x1f)>>5; ) |
505 |
> |
for (i = 0; odS.redraw[n]; i++) /* skips faster */ |
506 |
> |
if (odS.redraw[n] & 1L<<i) { |
507 |
> |
odDrawSamp(vn, (n<<5)+i); |
508 |
> |
odS.redraw[n] &= ~(1L<<i); |
509 |
> |
} |
510 |
> |
/* redraw samples at beginning */ |
511 |
> |
for (i = odView[vn].sfirst; i < odView[vn].sfirst+31; i++) |
512 |
|
if (CHK4(odS.redraw, i)) { |
513 |
|
odDrawSamp(vn, i); |
514 |
|
CLR4(odS.redraw, i); |
515 |
|
} |
516 |
< |
/* faster flag checks in middle */ |
470 |
< |
for (j = odView[vn].snext>>5; j-- > (odView[vn].sfirst+0x1f)>>5; ) |
471 |
< |
for (i = 0; odS.redraw[j]; i++) /* skips faster */ |
472 |
< |
if (odS.redraw[j] & 1L<<i) { |
473 |
< |
odDrawSamp(vn, (j<<5)+i); |
474 |
< |
odS.redraw[j] &= ~(1L<<i); |
475 |
< |
} |
516 |
> |
odView[vn].n2redraw = 0; |
517 |
|
} |
518 |
|
|
519 |
|
|
555 |
|
double sz; |
556 |
|
{ |
557 |
|
int na, dv; |
558 |
< |
double hrad, vrad, phi0, phi; |
558 |
> |
double hrad, vrad, phi; |
559 |
|
register int i; |
560 |
|
|
561 |
|
DCHECK(sz > 1, CONSISTENCY, "super-unary size in make_arms"); |
562 |
< |
na = MAXFAN*sz*sz + 0.5; /* keep area constant */ |
562 |
> |
na = MAXFAN*sz + 0.5; /* keep arc length constant */ |
563 |
|
if (na < MINFAN) na = MINFAN; |
564 |
|
hrad = FANSIZE*sz*vp->hhi/vp->hlow; |
565 |
|
vrad = FANSIZE*sz*vp->vhi/vp->vlow; |
566 |
|
if (hrad*vrad < 2.25) |
567 |
|
hrad = vrad = 1.5; |
527 |
– |
phi0 = (2.*PI) * frandom(); |
568 |
|
dv = OMAXDEPTH*sz + 0.5; |
569 |
|
for (i = 0; i < na; i++) { |
570 |
< |
phi = phi0 + (2.*PI)*i/na; |
570 |
> |
phi = (2.*PI)*i/na; |
571 |
|
ar[i][0] = cp[0] + tcos(phi)*hrad + 0.5; |
572 |
|
ar[i][1] = cp[1] + tsin(phi)*vrad + 0.5; |
573 |
|
ar[i][2] = dv; |
620 |
|
n = rise + run; |
621 |
|
while (n--) /* run out arm, checking depth */ |
622 |
|
if (run2 > rise2) { |
583 |
– |
if (depthchange(vp, x, y, x+xstep, y)) |
584 |
– |
break; |
623 |
|
x += xstep; |
624 |
|
rise2 += rise; |
625 |
< |
} else { |
588 |
< |
if (depthchange(vp, x, y, x, y+ystep)) |
625 |
> |
if (depthchange(vp, x-xstep, y, x, y)) |
626 |
|
break; |
627 |
+ |
} else { |
628 |
|
y += ystep; |
629 |
|
run2 += run; |
630 |
+ |
if (depthchange(vp, x, y-ystep, x, y)) |
631 |
+ |
break; |
632 |
|
} |
633 |
|
if (n < 0) /* found something? */ |
634 |
|
return; |
652 |
|
} |
653 |
|
|
654 |
|
|
655 |
+ |
static int |
656 |
+ |
blockedge(vp, bi0, bi1) /* check for edge between blocks? */ |
657 |
+ |
register struct ODview *vp; |
658 |
+ |
register int bi0, bi1; |
659 |
+ |
{ |
660 |
+ |
if (bi1 == bi0) |
661 |
+ |
return(0); /* same block */ |
662 |
+ |
if (bi1 < 0) |
663 |
+ |
return(1); /* end off view */ |
664 |
+ |
if (CHK4(vp->emap, bi1)) |
665 |
+ |
return(1); /* end block has edges */ |
666 |
+ |
if (bi1 == bi0+1 || bi1 == bi0-1 || |
667 |
+ |
bi1 == bi0+vp->hlow || bi1 == bi0-vp->hlow) |
668 |
+ |
return(0); /* end in adjacent block -- no edges */ |
669 |
+ |
return(1); /* conservative for rarer case */ |
670 |
+ |
} |
671 |
+ |
|
672 |
+ |
|
673 |
|
odDrawSamp(vn, id) /* draw view sample */ |
674 |
|
int vn; |
675 |
|
register int id; |
676 |
|
{ |
677 |
|
GLshort arm[MAXFAN][3]; |
678 |
< |
int narms, blockindex, bi1; |
678 |
> |
int narms, blockindex; |
679 |
|
register struct ODview *vp; |
680 |
|
double size; |
681 |
|
int home_edges; |
692 |
|
if (vp->emap != NULL) { /* check for edge collisions */ |
693 |
|
home_edges = CHK4(vp->emap, blockindex); |
694 |
|
for (i = 0; i < narms; i++) |
695 |
< |
/* the following test is flawed, because we could |
696 |
< |
* be passing through a block on a diagonal run */ |
639 |
< |
if (home_edges || |
640 |
< |
( (bi1 = getblock(vp, arm[i][0], arm[i][1])) |
641 |
< |
!= blockindex && |
642 |
< |
(bi1 < 0 || CHK4(vp->emap, bi1)) )) |
695 |
> |
if (home_edges || blockedge(vp, blockindex, |
696 |
> |
getblock(vp, arm[i][0], arm[i][1]))) |
697 |
|
clip_edge(arm[i], odS.ip[id], vp); |
698 |
|
} |
699 |
|
/* draw triangle fan */ |