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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ SGI"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
6 |
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|
4 |
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/* |
5 |
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* Routines for drawing samples using depth buffer checks. |
6 |
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*/ |
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#include "standard.h" |
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13 |
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#include <sys/types.h> |
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#include <GL/glx.h> |
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#include <GL/glu.h> |
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17 |
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#include "random.h" |
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#include "rhd_odraw.h" |
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15 |
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#ifndef DEPTHEPS |
21 |
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#ifndef SFREEFRAC |
22 |
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#define SFREEFRAC 0.2 /* fraction to free at a time */ |
23 |
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#endif |
24 |
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#ifndef REDRAWTHRESH |
25 |
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#define REDRAWTHRESH 10240 /* number of samples for dissolve */ |
26 |
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#endif |
27 |
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#ifndef MAXFAN |
28 |
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#define MAXFAN 32 /* maximum arms in a triangle fan */ |
29 |
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#endif |
47 |
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48 |
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49 |
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#define SAMP32 (32*(2*sizeof(short)+sizeof(union ODfunion)+sizeof(TMbright)+\ |
50 |
< |
6*sizeof(BYTE))+sizeof(int4)) |
50 |
> |
6*sizeof(BYTE))+sizeof(int32)) |
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52 |
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int |
53 |
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odInit(n) /* initialize drawing routines */ |
58 |
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|
59 |
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if (odNViews > 0) { /* deallocate view structures */ |
60 |
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for (i = odNViews; i--; ) { |
61 |
< |
free((char *)odView[i].bmap); |
62 |
< |
free((char *)odView[i].pmap); |
61 |
> |
free((void *)odView[i].bmap); |
62 |
> |
free((void *)odView[i].pmap); |
63 |
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if (odView[i].emap != NULL) |
64 |
< |
free((char *)odView[i].emap); |
64 |
> |
free((void *)odView[i].emap); |
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} |
66 |
< |
free((char *)odView); |
66 |
> |
free((void *)odView); |
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odView = NULL; |
68 |
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odNViews = 0; |
69 |
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} |
87 |
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return(0); |
88 |
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/* assign larger alignment types earlier */ |
89 |
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odS.f = (union ODfunion *)odS.base; |
90 |
< |
odS.redraw = (int4 *)(odS.f + n); |
90 |
> |
odS.redraw = (int32 *)(odS.f + n); |
91 |
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odS.ip = (short (*)[2])(odS.redraw + n/32); |
92 |
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odS.brt = (TMbright *)(odS.ip + n); |
93 |
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odS.chr = (BYTE (*)[3])(odS.brt + n); |
117 |
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if (odView[i].vlow < 1) odView[i].vlow = 1; |
118 |
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odView[i].emap = NULL; |
119 |
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odView[i].dmap = NULL; |
120 |
< |
odView[i].pmap = (int4 *)calloc(FL4NELS(res[0]*res[1]), |
121 |
< |
sizeof(int4)); |
120 |
> |
odView[i].pmap = (int32 *)calloc(FL4NELS(res[0]*res[1]), |
121 |
> |
sizeof(int32)); |
122 |
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if (odView[i].pmap == NULL) |
123 |
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return(0); |
124 |
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j = odView[i].hlow*odView[i].vlow; |
142 |
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odView[i].bmap[j].nused = 0; |
143 |
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} |
144 |
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odView[i].snext = nextsamp; |
145 |
+ |
odView[i].n2redraw = 0; |
146 |
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} |
147 |
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CLR4ALL(odS.redraw, odS.nsamp); /* clear redraw flags */ |
148 |
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for (i = odS.nsamp; i--; ) { /* clear values */ |
188 |
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if (CHK4(odView[vn].pmap, vh*odView[vn].hhi + hh)) |
189 |
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i = bp->first + bp->nsamp; |
190 |
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else |
191 |
< |
i = -1; |
191 |
> |
i = 0; |
192 |
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while (i-- > bp->first) |
193 |
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if (hh == odS.ip[i][0] && vh == odS.ip[i][1]) { /* found it! */ |
194 |
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/* search free list for it */ |
203 |
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bp->nused++; |
204 |
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goto gotit; |
205 |
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} |
206 |
< |
if (prox >= 0.999*odS.closeness(i)) |
206 |
> |
if (prox >= 0.99*odS.closeness(i)) |
207 |
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return(-1); /* previous sample is fine */ |
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goto gotit; |
209 |
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} |
211 |
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DCHECK(i>=-1, WARNING, "pixel in presence map not found in block"); |
210 |
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if (bp->free != ENDFREE) { /* allocate from free list */ |
211 |
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i = bp->free; |
212 |
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if (odS.ip[i][0] >= 0 & odS.ip[i][1] >= 0) |
297 |
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if (id < 0) |
298 |
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continue; /* not good enough */ |
299 |
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/* convert color */ |
300 |
< |
tmCvColrs(&odS.brt[id], odS.chr[id], c, 1); |
300 |
> |
tmCvColrs(&odS.brt[id], odS.chr[id], (COLR *)c, 1); |
301 |
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if (imm_mode | needmapping) /* if immediate mode */ |
302 |
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needmapping |= NEWRGB; /* map it later */ |
303 |
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else /* else map it now */ |
304 |
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tmMapPixels(odS.rgb[id], &odS.brt[id], odS.chr[id], 1); |
305 |
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SET4(odS.redraw, id); /* mark for redraw */ |
306 |
+ |
odView[i].n2redraw++; |
307 |
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} |
308 |
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} |
309 |
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317 |
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} |
318 |
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319 |
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320 |
+ |
odRedrawAll() /* mark all samples for redraw */ |
321 |
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{ |
322 |
+ |
register int i; |
323 |
+ |
|
324 |
+ |
if ((needmapping&(NEWMAP|NEWRGB)) == (NEWMAP|NEWRGB)) |
325 |
+ |
return; /* will be called later, anyway */ |
326 |
+ |
for (i = odS.nsamp; i--; ) |
327 |
+ |
if (odS.ip[i][0] >= 0) |
328 |
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SET4(odS.redraw, i); |
329 |
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/* not right, but not important */ |
330 |
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for (i = 0; i < odNViews; i++) |
331 |
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odView[i].n2redraw = odView[i].snext - odView[i].sfirst; |
332 |
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} |
333 |
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|
334 |
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|
335 |
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odRedraw(vn, hmin, vmin, hmax, vmax) /* redraw view region */ |
336 |
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int vn, hmin, vmin, hmax, vmax; |
337 |
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{ |
358 |
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for (j = vmin; j <= vmax; j++) { |
359 |
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bp = odView[vn].bmap + j*odView[vn].hlow + i; |
360 |
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for (k = bp->nsamp; k--; ) |
361 |
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if (odS.ip[bp->first+k][0] >= 0) |
361 |
> |
if (odS.ip[bp->first+k][0] >= 0) { |
362 |
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SET4(odS.redraw, bp->first+k); |
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odView[vn].n2redraw++; |
364 |
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} |
365 |
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} |
366 |
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} |
367 |
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378 |
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if (vn<0 | vn>=odNViews) |
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return; /* too late -- they're gone! */ |
380 |
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if (odView[vn].emap != NULL) |
381 |
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free((char *)odView[vn].emap); |
381 |
> |
free((void *)odView[vn].emap); |
382 |
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odView[vn].emap = NULL; |
383 |
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odView[vn].dmap = NULL; |
384 |
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return; |
387 |
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"bad view number in odDepthMap"); |
388 |
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odView[vn].dmap = dm; /* initialize edge map */ |
389 |
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if (odView[vn].emap == NULL) { |
390 |
< |
odView[vn].emap = (int4 *)malloc( |
391 |
< |
FL4NELS(odView[vn].hlow*odView[vn].vlow)*sizeof(int4)); |
390 |
> |
odView[vn].emap = (int32 *)malloc( |
391 |
> |
FL4NELS(odView[vn].hlow*odView[vn].vlow)*sizeof(int32)); |
392 |
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if (odView[vn].emap == NULL) |
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error(SYSTEM, "out of memory in odDepthMap"); |
394 |
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} |
442 |
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odUpdate(vn) /* update this view */ |
443 |
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int vn; |
444 |
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{ |
445 |
< |
register int i, j; |
445 |
> |
static short primes[] = {9431,6803,4177,2659,1609,887,587,251,47,1}; |
446 |
> |
int myprime; |
447 |
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register int i, n; |
448 |
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449 |
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DCHECK(vn<0 | vn>=odNViews, CONSISTENCY, |
450 |
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"bad view number in odUpdate"); |
453 |
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if (needmapping & NEWMAP) { |
454 |
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if (needmapping & NEWHIST) |
455 |
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tmClearHisto(); |
456 |
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needmapping &= ~NEWHIST; |
457 |
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if (tmAddHisto(odS.brt,odS.nsamp,1) != TM_E_OK) |
458 |
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return; |
459 |
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if (tmComputeMapping(0.,0.,0.) != TM_E_OK) |
460 |
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return; |
461 |
< |
for (i = odS.nsamp; i--; ) /* redraw all */ |
462 |
< |
if (odS.ip[i][0] >= 0) |
444 |
< |
SET4(odS.redraw, i); |
461 |
> |
needmapping &= ~NEWMAP; |
462 |
> |
odRedrawAll(); /* redraw everything */ |
463 |
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} |
464 |
< |
if (tmMapPixels(odS.rgb,odS.brt,odS.chr,odS.nsamp) != TM_E_OK) |
464 |
> |
if (tmMapPixels((BYTE *)(odS.rgb), odS.brt, |
465 |
> |
(BYTE *)(odS.chr), odS.nsamp) != TM_E_OK) |
466 |
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return; |
467 |
< |
needmapping = 0; /* reset flag */ |
467 |
> |
needmapping &= ~NEWRGB; |
468 |
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} |
469 |
< |
/* this code segment was too slow */ |
470 |
< |
#if 0 |
471 |
< |
for (i = odView[vn].sfirst; i < odView[vn].snext; i++) |
469 |
> |
if (odView[vn].n2redraw <= 0) |
470 |
> |
return; |
471 |
> |
#if REDRAWTHRESH |
472 |
> |
if (odView[vn].n2redraw < REDRAWTHRESH) |
473 |
> |
goto quickdraw; |
474 |
> |
/* pick a good prime step size */ |
475 |
> |
n = odView[vn].snext - odView[vn].sfirst; |
476 |
> |
for (i = 0; primes[i]<<5 >= n; i++) |
477 |
> |
; |
478 |
> |
while ((myprime = primes[i++]) > 1) |
479 |
> |
if (n % myprime) |
480 |
> |
break; |
481 |
> |
/* dissolve in new samples */ |
482 |
> |
for (i = odView[vn].sfirst; n-- > 0; i += myprime) { |
483 |
> |
if (i >= odView[vn].snext) |
484 |
> |
i -= odView[vn].snext - odView[vn].sfirst; |
485 |
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if (CHK4(odS.redraw, i)) { |
486 |
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odDrawSamp(vn, i); |
487 |
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CLR4(odS.redraw, i); |
488 |
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} |
489 |
+ |
} |
490 |
+ |
odView[vn].n2redraw = 0; |
491 |
+ |
return; |
492 |
+ |
quickdraw: /* quicker sparse flag checking */ |
493 |
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#endif |
494 |
< |
/* redraw samples at each end */ |
495 |
< |
for (i = odView[vn].sfirst; i < odView[vn].sfirst+31; i++) |
494 |
> |
/* redraw samples at end */ |
495 |
> |
for (i = odView[vn].snext-31; i < odView[vn].snext; i++) |
496 |
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if (CHK4(odS.redraw, i)) { |
497 |
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odDrawSamp(vn, i); |
498 |
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CLR4(odS.redraw, i); |
499 |
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} |
500 |
< |
for (i = odView[vn].snext-31; i < odView[vn].snext; i++) |
500 |
> |
/* faster flag checks in middle */ |
501 |
> |
for (n = odView[vn].snext>>5; n-- > (odView[vn].sfirst+0x1f)>>5; ) |
502 |
> |
for (i = 0; odS.redraw[n]; i++) /* skips faster */ |
503 |
> |
if (odS.redraw[n] & 1L<<i) { |
504 |
> |
odDrawSamp(vn, (n<<5)+i); |
505 |
> |
odS.redraw[n] &= ~(1L<<i); |
506 |
> |
} |
507 |
> |
/* redraw samples at beginning */ |
508 |
> |
for (i = odView[vn].sfirst; i < odView[vn].sfirst+31; i++) |
509 |
|
if (CHK4(odS.redraw, i)) { |
510 |
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odDrawSamp(vn, i); |
511 |
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CLR4(odS.redraw, i); |
512 |
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} |
513 |
< |
/* 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 |
< |
} |
513 |
> |
odView[vn].n2redraw = 0; |
514 |
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} |
515 |
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|
516 |
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|
552 |
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double sz; |
553 |
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{ |
554 |
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int na, dv; |
555 |
< |
double hrad, vrad, phi0, phi; |
555 |
> |
double hrad, vrad, phi; |
556 |
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register int i; |
557 |
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|
558 |
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DCHECK(sz > 1, CONSISTENCY, "super-unary size in make_arms"); |
559 |
< |
na = MAXFAN*sz*sz + 0.5; /* keep area constant */ |
559 |
> |
na = MAXFAN*sz + 0.5; /* keep arc length constant */ |
560 |
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if (na < MINFAN) na = MINFAN; |
561 |
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hrad = FANSIZE*sz*vp->hhi/vp->hlow; |
562 |
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vrad = FANSIZE*sz*vp->vhi/vp->vlow; |
563 |
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if (hrad*vrad < 2.25) |
564 |
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hrad = vrad = 1.5; |
527 |
– |
phi0 = (2.*PI) * frandom(); |
565 |
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dv = OMAXDEPTH*sz + 0.5; |
566 |
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for (i = 0; i < na; i++) { |
567 |
< |
phi = phi0 + (2.*PI)*i/na; |
567 |
> |
phi = (2.*PI)*i/na; |
568 |
|
ar[i][0] = cp[0] + tcos(phi)*hrad + 0.5; |
569 |
|
ar[i][1] = cp[1] + tsin(phi)*vrad + 0.5; |
570 |
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ar[i][2] = dv; |
617 |
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n = rise + run; |
618 |
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while (n--) /* run out arm, checking depth */ |
619 |
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if (run2 > rise2) { |
583 |
– |
if (depthchange(vp, x, y, x+xstep, y)) |
584 |
– |
break; |
620 |
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x += xstep; |
621 |
|
rise2 += rise; |
622 |
< |
} else { |
588 |
< |
if (depthchange(vp, x, y, x, y+ystep)) |
622 |
> |
if (depthchange(vp, x-xstep, y, x, y)) |
623 |
|
break; |
624 |
+ |
} else { |
625 |
|
y += ystep; |
626 |
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run2 += run; |
627 |
+ |
if (depthchange(vp, x, y-ystep, x, y)) |
628 |
+ |
break; |
629 |
|
} |
630 |
|
if (n < 0) /* found something? */ |
631 |
|
return; |
649 |
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} |
650 |
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|
651 |
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|
652 |
+ |
static int |
653 |
+ |
blockedge(vp, bi0, bi1) /* check for edge between blocks? */ |
654 |
+ |
register struct ODview *vp; |
655 |
+ |
register int bi0, bi1; |
656 |
+ |
{ |
657 |
+ |
if (bi1 == bi0) |
658 |
+ |
return(0); /* same block */ |
659 |
+ |
if (bi1 < 0) |
660 |
+ |
return(1); /* end off view */ |
661 |
+ |
if (CHK4(vp->emap, bi1)) |
662 |
+ |
return(1); /* end block has edges */ |
663 |
+ |
if (bi1 == bi0+1 || bi1 == bi0-1 || |
664 |
+ |
bi1 == bi0+vp->hlow || bi1 == bi0-vp->hlow) |
665 |
+ |
return(0); /* end in adjacent block -- no edges */ |
666 |
+ |
return(1); /* conservative for rarer case */ |
667 |
+ |
} |
668 |
+ |
|
669 |
+ |
|
670 |
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odDrawSamp(vn, id) /* draw view sample */ |
671 |
|
int vn; |
672 |
|
register int id; |
673 |
|
{ |
674 |
|
GLshort arm[MAXFAN][3]; |
675 |
< |
int narms, blockindex, bi1; |
675 |
> |
int narms, blockindex; |
676 |
|
register struct ODview *vp; |
677 |
|
double size; |
678 |
|
int home_edges; |
689 |
|
if (vp->emap != NULL) { /* check for edge collisions */ |
690 |
|
home_edges = CHK4(vp->emap, blockindex); |
691 |
|
for (i = 0; i < narms; i++) |
692 |
< |
/* the following test is flawed, because we could |
693 |
< |
* 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)) )) |
692 |
> |
if (home_edges || blockedge(vp, blockindex, |
693 |
> |
getblock(vp, arm[i][0], arm[i][1]))) |
694 |
|
clip_edge(arm[i], odS.ip[id], vp); |
695 |
|
} |
696 |
|
/* draw triangle fan */ |