1 |
< |
/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
1 |
> |
/* Copyright (c) 1999 Silicon Graphics, Inc. */ |
2 |
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3 |
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#ifndef lint |
4 |
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static char SCCSid[] = "$SunId$ SGI"; |
10 |
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11 |
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#include "standard.h" |
12 |
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|
13 |
– |
#include <sys/types.h> |
13 |
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#include <GL/glx.h> |
14 |
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#include <GL/glu.h> |
15 |
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|
17 |
– |
#include "random.h" |
16 |
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#include "rhd_odraw.h" |
17 |
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|
18 |
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#ifndef DEPTHEPS |
24 |
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#ifndef SFREEFRAC |
25 |
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#define SFREEFRAC 0.2 /* fraction to free at a time */ |
26 |
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#endif |
27 |
+ |
#ifndef REDRAWTHRESH |
28 |
+ |
#define REDRAWTHRESH 10240 /* number of samples for dissolve */ |
29 |
+ |
#endif |
30 |
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#ifndef MAXFAN |
31 |
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#define MAXFAN 32 /* maximum arms in a triangle fan */ |
32 |
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#endif |
39 |
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|
40 |
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#define NEWMAP 01 /* need to recompute mapping */ |
41 |
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#define NEWRGB 02 /* need to remap RGB values */ |
42 |
+ |
#define NEWHIST 04 /* clear histogram as well */ |
43 |
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|
44 |
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struct ODview *odView; /* our view list */ |
45 |
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int odNViews; /* number of views in our list */ |
59 |
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int nbytes, i, j, k, nextsamp, count, blockdiv; |
60 |
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int res[2]; |
61 |
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|
62 |
< |
if (odNViews) { /* deallocate view structures */ |
63 |
< |
for (i = 0; i < odNViews; i++) { |
62 |
> |
if (odNViews > 0) { /* deallocate view structures */ |
63 |
> |
for (i = odNViews; i--; ) { |
64 |
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free((char *)odView[i].bmap); |
65 |
+ |
free((char *)odView[i].pmap); |
66 |
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if (odView[i].emap != NULL) |
67 |
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free((char *)odView[i].emap); |
68 |
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} |
76 |
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for (i = 1024; nbytes > i-8; i <<= 1) |
77 |
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; |
78 |
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n = (i-8)/SAMP32 * 32; |
79 |
< |
needmapping = NEWMAP; |
79 |
> |
needmapping = NEWHIST; |
80 |
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} |
81 |
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if (n != odS.nsamp) { /* (re)allocate sample array */ |
82 |
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if (odS.nsamp) |
111 |
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if (blockdiv < 8) blockdiv = 8; |
112 |
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nextsamp = 0; count /= blockdiv*blockdiv; /* # blocks */ |
113 |
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while (i--) { /* initialize each view */ |
111 |
– |
odView[i].emap = NULL; |
112 |
– |
odView[i].dmap = NULL; |
114 |
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dev_auxview(i, res); |
115 |
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odView[i].hhi = res[0]; |
116 |
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odView[i].hlow = (res[0] + blockdiv/2) / blockdiv; |
118 |
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odView[i].vhi = res[1]; |
119 |
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odView[i].vlow = (res[1] + blockdiv/2) / blockdiv; |
120 |
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if (odView[i].vlow < 1) odView[i].vlow = 1; |
121 |
+ |
odView[i].emap = NULL; |
122 |
+ |
odView[i].dmap = NULL; |
123 |
+ |
odView[i].pmap = (int4 *)calloc(FL4NELS(res[0]*res[1]), |
124 |
+ |
sizeof(int4)); |
125 |
+ |
if (odView[i].pmap == NULL) |
126 |
+ |
return(0); |
127 |
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j = odView[i].hlow*odView[i].vlow; |
128 |
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odView[i].bmap = (struct ODblock *)malloc( |
129 |
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j * sizeof(struct ODblock)); |
132 |
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DCHECK(count<=0 | nextsamp>=n, |
133 |
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CONSISTENCY, "counter botch in odInit"); |
134 |
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if (!i) count = j; |
135 |
< |
while (j--) { |
135 |
> |
odView[i].sfirst = nextsamp; |
136 |
> |
while (j--) { /* initialize blocks & free lists */ |
137 |
> |
odView[i].bmap[j].pthresh = FHUGE; |
138 |
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odView[i].bmap[j].first = k = nextsamp; |
139 |
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nextsamp += odView[i].bmap[j].nsamp = |
140 |
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(n - nextsamp)/count--; |
144 |
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odS.nextfree(k-1) = ENDFREE; |
145 |
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odView[i].bmap[j].nused = 0; |
146 |
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} |
147 |
+ |
odView[i].snext = nextsamp; |
148 |
+ |
odView[i].n2redraw = 0; |
149 |
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} |
150 |
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CLR4ALL(odS.redraw, odS.nsamp); /* clear redraw flags */ |
151 |
< |
for (i = odS.nsamp; i--; ) /* clear values */ |
151 |
> |
for (i = odS.nsamp; i--; ) { /* clear values */ |
152 |
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odS.ip[i][0] = odS.ip[i][1] = -1; |
153 |
+ |
odS.brt[i] = TM_NOBRT; |
154 |
+ |
} |
155 |
+ |
needmapping |= NEWMAP; /* compute new map on update */ |
156 |
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return(odS.nsamp); /* return number of samples */ |
157 |
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} |
158 |
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170 |
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171 |
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172 |
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int |
173 |
< |
odAllocBlockSamp(vn, hl, vl) /* allocate sample from block */ |
174 |
< |
int vn, hl, vl; |
173 |
> |
odAllocBlockSamp(vn, hh, vh, prox) /* allocate sample from block */ |
174 |
> |
int vn, hh, vh; |
175 |
> |
double prox; |
176 |
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{ |
177 |
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int si[SAMPSPERBLOCK+SAMPSPERBLOCK/4]; |
178 |
+ |
int hl, vl; |
179 |
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VIEW *vw; |
180 |
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FVECT ro, rd; |
181 |
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int res[2]; |
182 |
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register struct ODblock *bp; |
183 |
< |
register int i; |
184 |
< |
|
183 |
> |
register int i, j; |
184 |
> |
/* get block */ |
185 |
> |
hl = hh*odView[vn].hlow/odView[vn].hhi; |
186 |
> |
vl = vh*odView[vn].vlow/odView[vn].vhi; |
187 |
|
bp = odView[vn].bmap + vl*odView[vn].hlow + hl; |
188 |
< |
if (bp->free != ENDFREE) { /* check free list first */ |
188 |
> |
if (prox > bp->pthresh) |
189 |
> |
return(-1); /* worse than free list occupants */ |
190 |
> |
/* check for duplicate pixel */ |
191 |
> |
if (CHK4(odView[vn].pmap, vh*odView[vn].hhi + hh)) |
192 |
> |
i = bp->first + bp->nsamp; |
193 |
> |
else |
194 |
> |
i = 0; |
195 |
> |
while (i-- > bp->first) |
196 |
> |
if (hh == odS.ip[i][0] && vh == odS.ip[i][1]) { /* found it! */ |
197 |
> |
/* search free list for it */ |
198 |
> |
if (i == bp->free) |
199 |
> |
break; /* special case */ |
200 |
> |
if (bp->free != ENDFREE) |
201 |
> |
for (j = bp->free; odS.nextfree(j) != ENDFREE; |
202 |
> |
j = odS.nextfree(j)) |
203 |
> |
if (odS.nextfree(j) == i) { |
204 |
> |
odS.nextfree(j) = |
205 |
> |
odS.nextfree(i); |
206 |
> |
bp->nused++; |
207 |
> |
goto gotit; |
208 |
> |
} |
209 |
> |
if (prox >= 0.99*odS.closeness(i)) |
210 |
> |
return(-1); /* previous sample is fine */ |
211 |
> |
goto gotit; |
212 |
> |
} |
213 |
> |
if (bp->free != ENDFREE) { /* allocate from free list */ |
214 |
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i = bp->free; |
215 |
+ |
if (odS.ip[i][0] >= 0 & odS.ip[i][1] >= 0) |
216 |
+ |
CLR4(odView[vn].pmap, odS.ip[i][1]*odView[vn].hhi + |
217 |
+ |
odS.ip[i][0]); |
218 |
|
bp->free = odS.nextfree(i); |
219 |
|
bp->nused++; |
220 |
< |
return(i); |
220 |
> |
goto gotit; |
221 |
|
} |
222 |
|
DCHECK(bp->nsamp<=0, CONSISTENCY, |
223 |
|
"no available samples in odAllocBlockSamp"); |
229 |
|
for (i = bp->nsamp; i--; ) /* figure out which are worse */ |
230 |
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si[i] = bp->first + i; |
231 |
|
qsort((char *)si, bp->nsamp, sizeof(int), sampcmp); |
232 |
< |
i = bp->nsamp*SFREEFRAC + .5; /* put them in a list */ |
232 |
> |
i = bp->nsamp*SFREEFRAC + .5; /* put them into free list */ |
233 |
> |
if (i >= bp->nsamp) i = bp->nsamp-1; /* paranoia */ |
234 |
> |
bp->pthresh = odS.closeness(si[i]); /* new proximity threshold */ |
235 |
|
while (--i > 0) { |
236 |
|
odS.nextfree(si[i]) = bp->free; |
237 |
|
bp->free = si[i]; |
238 |
|
bp->nused--; |
239 |
|
} |
240 |
< |
return(si[0]); /* return first free sample */ |
240 |
> |
i = si[0]; /* use worst sample */ |
241 |
> |
CLR4(odView[vn].pmap, odS.ip[i][1]*odView[vn].hhi + odS.ip[i][0]); |
242 |
> |
gotit: |
243 |
> |
odS.ip[i][0] = hh; |
244 |
> |
odS.ip[i][1] = vh; |
245 |
> |
odS.closeness(i) = prox; |
246 |
> |
SET4(odView[vn].pmap, vh*odView[vn].hhi + hh); |
247 |
> |
return(i); |
248 |
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} |
249 |
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|
250 |
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|
253 |
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FVECT d, p; |
254 |
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{ |
255 |
|
FVECT disp; |
256 |
< |
double d0, d1, h, v; |
256 |
> |
double d0, d1, h, v, prox; |
257 |
|
register VIEW *vw; |
258 |
< |
int hl, vl, hh, vh; |
258 |
> |
int hh, vh; |
259 |
|
int res[2]; |
260 |
|
register int i, id; |
261 |
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|
290 |
|
(1.+DEPTHEPS)*d0 < d1)) |
291 |
|
continue; /* occlusion error */ |
292 |
|
} |
238 |
– |
hl = hh*odView[i].hlow/res[0]; |
239 |
– |
vl = vh*odView[i].vlow/res[1]; |
240 |
– |
/* may duplicate samples */ |
241 |
– |
id = odAllocBlockSamp(i, hl, vl); |
242 |
– |
odS.ip[id][0] = hh; |
243 |
– |
odS.ip[id][1] = vh; |
293 |
|
if (p != NULL) { /* compute closeness (sin^2) */ |
294 |
|
d1 = DOT(disp, d); |
295 |
< |
odS.closeness(id) = 1. - d1*d1/DOT(disp,disp); |
295 |
> |
prox = 1. - d1*d1/DOT(disp,disp); |
296 |
|
} else |
297 |
< |
odS.closeness(id) = 0.; |
297 |
> |
prox = 0.; |
298 |
> |
/* allocate sample */ |
299 |
> |
id = odAllocBlockSamp(i, hh, vh, prox); |
300 |
> |
if (id < 0) |
301 |
> |
continue; /* not good enough */ |
302 |
|
/* convert color */ |
303 |
|
tmCvColrs(&odS.brt[id], odS.chr[id], c, 1); |
304 |
|
if (imm_mode | needmapping) /* if immediate mode */ |
306 |
|
else /* else map it now */ |
307 |
|
tmMapPixels(odS.rgb[id], &odS.brt[id], odS.chr[id], 1); |
308 |
|
SET4(odS.redraw, id); /* mark for redraw */ |
309 |
+ |
odView[i].n2redraw++; |
310 |
|
} |
311 |
|
} |
312 |
|
|
313 |
|
|
314 |
< |
odRemap() /* recompute tone mapping */ |
314 |
> |
odRemap(newhist) /* recompute tone mapping */ |
315 |
> |
int newhist; |
316 |
|
{ |
317 |
|
needmapping |= NEWMAP|NEWRGB; |
318 |
+ |
if (newhist) |
319 |
+ |
needmapping |= NEWHIST; |
320 |
|
} |
321 |
|
|
322 |
|
|
323 |
+ |
odRedrawAll() /* mark all samples for redraw */ |
324 |
+ |
{ |
325 |
+ |
register int i; |
326 |
+ |
|
327 |
+ |
if ((needmapping&(NEWMAP|NEWRGB)) == (NEWMAP|NEWRGB)) |
328 |
+ |
return; /* will be called later, anyway */ |
329 |
+ |
for (i = odS.nsamp; i--; ) |
330 |
+ |
if (odS.ip[i][0] >= 0) |
331 |
+ |
SET4(odS.redraw, i); |
332 |
+ |
/* not right, but not important */ |
333 |
+ |
for (i = 0; i < odNViews; i++) |
334 |
+ |
odView[i].n2redraw = odView[i].snext - odView[i].sfirst; |
335 |
+ |
} |
336 |
+ |
|
337 |
+ |
|
338 |
|
odRedraw(vn, hmin, vmin, hmax, vmax) /* redraw view region */ |
339 |
|
int vn, hmin, vmin, hmax, vmax; |
340 |
|
{ |
361 |
|
for (j = vmin; j <= vmax; j++) { |
362 |
|
bp = odView[vn].bmap + j*odView[vn].hlow + i; |
363 |
|
for (k = bp->nsamp; k--; ) |
364 |
< |
if (odS.ip[bp->first+k][0] >= 0) |
364 |
> |
if (odS.ip[bp->first+k][0] >= 0) { |
365 |
|
SET4(odS.redraw, bp->first+k); |
366 |
+ |
odView[vn].n2redraw++; |
367 |
+ |
} |
368 |
|
} |
369 |
|
} |
370 |
|
|
377 |
|
int i, j, hmin, hmax, vmin, vmax; |
378 |
|
register int k, l; |
379 |
|
|
306 |
– |
DCHECK(vn<0 | vn>=odNViews, CONSISTENCY, |
307 |
– |
"bad view number in odDepthMap"); |
380 |
|
if (dm == NULL) { /* free edge map */ |
381 |
+ |
if (vn<0 | vn>=odNViews) |
382 |
+ |
return; /* too late -- they're gone! */ |
383 |
|
if (odView[vn].emap != NULL) |
384 |
|
free((char *)odView[vn].emap); |
385 |
|
odView[vn].emap = NULL; |
386 |
|
odView[vn].dmap = NULL; |
387 |
|
return; |
388 |
|
} |
389 |
+ |
DCHECK(vn<0 | vn>=odNViews, CONSISTENCY, |
390 |
+ |
"bad view number in odDepthMap"); |
391 |
|
odView[vn].dmap = dm; /* initialize edge map */ |
392 |
|
if (odView[vn].emap == NULL) { |
393 |
|
odView[vn].emap = (int4 *)malloc( |
445 |
|
odUpdate(vn) /* update this view */ |
446 |
|
int vn; |
447 |
|
{ |
448 |
< |
int i, j; |
449 |
< |
register struct ODblock *bp; |
450 |
< |
register int k; |
448 |
> |
static short primes[] = {9431,6803,4177,2659,1609,887,587,251,47,1}; |
449 |
> |
int myprime; |
450 |
> |
register int i, n; |
451 |
|
|
452 |
|
DCHECK(vn<0 | vn>=odNViews, CONSISTENCY, |
453 |
|
"bad view number in odUpdate"); |
454 |
|
/* need to do some tone mapping? */ |
455 |
|
if (needmapping & NEWRGB) { |
456 |
|
if (needmapping & NEWMAP) { |
457 |
< |
tmClearHisto(); |
457 |
> |
if (needmapping & NEWHIST) |
458 |
> |
tmClearHisto(); |
459 |
> |
needmapping &= ~NEWHIST; |
460 |
|
if (tmAddHisto(odS.brt,odS.nsamp,1) != TM_E_OK) |
461 |
|
return; |
462 |
|
if (tmComputeMapping(0.,0.,0.) != TM_E_OK) |
463 |
|
return; |
464 |
< |
for (k = odS.nsamp; k--; ) /* redraw all */ |
465 |
< |
if (odS.ip[k][0] >= 0) |
388 |
< |
SET4(odS.redraw, k); |
464 |
> |
needmapping &= ~NEWMAP; |
465 |
> |
odRedrawAll(); /* redraw everything */ |
466 |
|
} |
467 |
|
if (tmMapPixels(odS.rgb,odS.brt,odS.chr,odS.nsamp) != TM_E_OK) |
468 |
|
return; |
469 |
< |
needmapping = 0; /* reset flag */ |
469 |
> |
needmapping &= ~NEWRGB; |
470 |
|
} |
471 |
< |
/* draw each block in view */ |
472 |
< |
for (i = odView[vn].hlow; i--; ) |
473 |
< |
for (j = odView[vn].vlow; j--; ) { |
474 |
< |
/* get block */ |
475 |
< |
bp = odView[vn].bmap + j*odView[vn].hlow + i; |
476 |
< |
/* do quick, conservative flag check */ |
477 |
< |
for (k = (bp->first+bp->nsamp+31)>>5; |
478 |
< |
k-- > bp->first>>5; ) |
479 |
< |
if (odS.redraw[k]) |
480 |
< |
break; /* non-zero flag */ |
481 |
< |
if (k < bp->first>>5) |
482 |
< |
continue; /* no flags set */ |
483 |
< |
for (k = bp->nsamp; k--; ) /* sample by sample */ |
484 |
< |
if (CHK4(odS.redraw, bp->first+k)) { |
485 |
< |
odDrawBlockSamp(vn, i, j, bp->first+k); |
486 |
< |
CLR4(odS.redraw, bp->first+k); |
487 |
< |
} |
471 |
> |
if (odView[vn].n2redraw <= 0) |
472 |
> |
return; |
473 |
> |
#if REDRAWTHRESH |
474 |
> |
if (odView[vn].n2redraw < REDRAWTHRESH) |
475 |
> |
goto quickdraw; |
476 |
> |
/* pick a good prime step size */ |
477 |
> |
n = odView[vn].snext - odView[vn].sfirst; |
478 |
> |
for (i = 0; primes[i]<<5 >= n; i++) |
479 |
> |
; |
480 |
> |
while ((myprime = primes[i++]) > 1) |
481 |
> |
if (n % myprime) |
482 |
> |
break; |
483 |
> |
/* dissolve in new samples */ |
484 |
> |
for (i = odView[vn].sfirst; n-- > 0; i += myprime) { |
485 |
> |
if (i >= odView[vn].snext) |
486 |
> |
i -= odView[vn].snext - odView[vn].sfirst; |
487 |
> |
if (CHK4(odS.redraw, i)) { |
488 |
> |
odDrawSamp(vn, i); |
489 |
> |
CLR4(odS.redraw, i); |
490 |
|
} |
491 |
+ |
} |
492 |
+ |
odView[vn].n2redraw = 0; |
493 |
+ |
return; |
494 |
+ |
quickdraw: /* quicker sparse flag checking */ |
495 |
+ |
#endif |
496 |
+ |
/* redraw samples at end */ |
497 |
+ |
for (i = odView[vn].snext-31; i < odView[vn].snext; i++) |
498 |
+ |
if (CHK4(odS.redraw, i)) { |
499 |
+ |
odDrawSamp(vn, i); |
500 |
+ |
CLR4(odS.redraw, i); |
501 |
+ |
} |
502 |
+ |
/* faster flag checks in middle */ |
503 |
+ |
for (n = odView[vn].snext>>5; n-- > (odView[vn].sfirst+0x1f)>>5; ) |
504 |
+ |
for (i = 0; odS.redraw[n]; i++) /* skips faster */ |
505 |
+ |
if (odS.redraw[n] & 1L<<i) { |
506 |
+ |
odDrawSamp(vn, (n<<5)+i); |
507 |
+ |
odS.redraw[n] &= ~(1L<<i); |
508 |
+ |
} |
509 |
+ |
/* redraw samples at beginning */ |
510 |
+ |
for (i = odView[vn].sfirst; i < odView[vn].sfirst+31; i++) |
511 |
+ |
if (CHK4(odS.redraw, i)) { |
512 |
+ |
odDrawSamp(vn, i); |
513 |
+ |
CLR4(odS.redraw, i); |
514 |
+ |
} |
515 |
+ |
odView[vn].n2redraw = 0; |
516 |
|
} |
517 |
|
|
518 |
|
|
519 |
+ |
/* this turned out to be unnecessary */ |
520 |
|
#if 0 |
521 |
|
static |
522 |
|
clip_end(p, o, vp) /* clip line segment to view */ |
554 |
|
double sz; |
555 |
|
{ |
556 |
|
int na, dv; |
557 |
< |
double hrad, vrad, phi0, phi; |
557 |
> |
double hrad, vrad, phi; |
558 |
|
register int i; |
559 |
|
|
560 |
|
DCHECK(sz > 1, CONSISTENCY, "super-unary size in make_arms"); |
561 |
< |
na = MAXFAN*sz*sz + 0.5; /* keep area constant */ |
561 |
> |
na = MAXFAN*sz + 0.5; /* keep arc length constant */ |
562 |
|
if (na < MINFAN) na = MINFAN; |
563 |
|
hrad = FANSIZE*sz*vp->hhi/vp->hlow; |
564 |
|
vrad = FANSIZE*sz*vp->vhi/vp->vlow; |
565 |
|
if (hrad*vrad < 2.25) |
566 |
|
hrad = vrad = 1.5; |
462 |
– |
phi0 = (2.*PI) * frandom(); |
567 |
|
dv = OMAXDEPTH*sz + 0.5; |
568 |
|
for (i = 0; i < na; i++) { |
569 |
< |
phi = phi0 + (2.*PI)*i/na; |
569 |
> |
phi = (2.*PI)*i/na; |
570 |
|
ar[i][0] = cp[0] + tcos(phi)*hrad + 0.5; |
571 |
|
ar[i][1] = cp[1] + tsin(phi)*vrad + 0.5; |
572 |
|
ar[i][2] = dv; |
619 |
|
n = rise + run; |
620 |
|
while (n--) /* run out arm, checking depth */ |
621 |
|
if (run2 > rise2) { |
518 |
– |
if (depthchange(vp, x, y, x+xstep, y)) |
519 |
– |
break; |
622 |
|
x += xstep; |
623 |
|
rise2 += rise; |
624 |
< |
} else { |
523 |
< |
if (depthchange(vp, x, y, x, y+ystep)) |
624 |
> |
if (depthchange(vp, x-xstep, y, x, y)) |
625 |
|
break; |
626 |
+ |
} else { |
627 |
|
y += ystep; |
628 |
|
run2 += run; |
629 |
+ |
if (depthchange(vp, x, y-ystep, x, y)) |
630 |
+ |
break; |
631 |
|
} |
632 |
|
if (n < 0) /* found something? */ |
633 |
|
return; |
651 |
|
} |
652 |
|
|
653 |
|
|
654 |
< |
odDrawBlockSamp(vn, h, v, id) /* draw sample in view block */ |
655 |
< |
int vn, h, v; |
654 |
> |
static int |
655 |
> |
blockedge(vp, bi0, bi1) /* check for edge between blocks? */ |
656 |
> |
register struct ODview *vp; |
657 |
> |
register int bi0, bi1; |
658 |
> |
{ |
659 |
> |
if (bi1 == bi0) |
660 |
> |
return(0); /* same block */ |
661 |
> |
if (bi1 < 0) |
662 |
> |
return(1); /* end off view */ |
663 |
> |
if (CHK4(vp->emap, bi1)) |
664 |
> |
return(1); /* end block has edges */ |
665 |
> |
if (bi1 == bi0+1 || bi1 == bi0-1 || |
666 |
> |
bi1 == bi0+vp->hlow || bi1 == bi0-vp->hlow) |
667 |
> |
return(0); /* end in adjacent block -- no edges */ |
668 |
> |
return(1); /* conservative for rarer case */ |
669 |
> |
} |
670 |
> |
|
671 |
> |
|
672 |
> |
odDrawSamp(vn, id) /* draw view sample */ |
673 |
> |
int vn; |
674 |
|
register int id; |
675 |
|
{ |
676 |
|
GLshort arm[MAXFAN][3]; |
677 |
< |
int narms, blockindex, bi1; |
677 |
> |
int narms, blockindex; |
678 |
|
register struct ODview *vp; |
679 |
|
double size; |
680 |
|
int home_edges; |
681 |
|
register int i; |
682 |
|
|
683 |
|
vp = odView + vn; |
684 |
< |
blockindex = v*vp->hlow + h; |
685 |
< |
DCHECK(odS.ip[id][0]*vp->hlow/vp->hhi != h | |
564 |
< |
odS.ip[id][1]*vp->vlow/vp->vhi != v, |
565 |
< |
CONSISTENCY, "bad sample position in odDrawBlockSamp"); |
684 |
> |
blockindex = getblock(vp, odS.ip[id][0], odS.ip[id][1]); |
685 |
> |
DCHECK(blockindex<0, CONSISTENCY, "bad sample handed to odDrawSamp"); |
686 |
|
DCHECK(vp->bmap[blockindex].nused <= 0, |
687 |
< |
CONSISTENCY, "bad in-use count in odDrawBlockSamp"); |
687 |
> |
CONSISTENCY, "bad in-use count in odDrawSamp"); |
688 |
|
/* create triangle fan */ |
689 |
|
size = 1./sqrt((double)vp->bmap[blockindex].nused); |
690 |
|
narms = make_arms(arm, odS.ip[id], vp, size); |
691 |
|
if (vp->emap != NULL) { /* check for edge collisions */ |
692 |
|
home_edges = CHK4(vp->emap, blockindex); |
693 |
|
for (i = 0; i < narms; i++) |
694 |
< |
/* the following test is flawed, because we could |
695 |
< |
* be passing through a block on a diagonal run */ |
576 |
< |
if (home_edges || |
577 |
< |
( (bi1 = getblock(vp, arm[i][0], arm[i][1])) |
578 |
< |
!= blockindex && |
579 |
< |
(bi1 < 0 || CHK4(vp->emap, bi1)) )) |
694 |
> |
if (home_edges || blockedge(vp, blockindex, |
695 |
> |
getblock(vp, arm[i][0], arm[i][1]))) |
696 |
|
clip_edge(arm[i], odS.ip[id], vp); |
697 |
|
} |
698 |
|
/* draw triangle fan */ |