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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* Routines for drawing samples using depth buffer checks. |
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*/ |
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#include "standard.h" |
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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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#define SAMP32 (32*(2*sizeof(short)+sizeof(union ODfunion)+sizeof(TMbright)+\ |
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6*sizeof(BYTE))+sizeof(int4)) |
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6*sizeof(uby8))+sizeof(int32)) |
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|
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static int sampcmp(const void *s0, const void *s1); |
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static int odAllocBlockSamp(int vn, int hh, int vh, double prox); |
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static int make_arms(GLshort ar[MAXFAN][3], short cp[2], struct ODview *vp, |
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double sz); |
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static int depthchange(struct ODview *vp, int x0, int y0, int x1, int y1); |
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static void clip_edge(GLshort p[3], short o[2], struct ODview *vp); |
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static int getblock(struct ODview *vp, int h, int v); |
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static int blockedge(struct ODview *vp, int bi0, int bi1); |
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static void odDrawSamp(int vn, int id); |
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int |
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odInit(n) /* initialize drawing routines */ |
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int n; |
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odInit( /* initialize drawing routines */ |
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int n |
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) |
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{ |
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int nbytes, i, j, k, nextsamp, count, blockdiv; |
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int res[2]; |
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if (odNViews > 0) { /* deallocate view structures */ |
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for (i = odNViews; i--; ) { |
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free((char *)odView[i].bmap); |
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free((char *)odView[i].pmap); |
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free((void *)odView[i].bmap); |
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free((void *)odView[i].pmap); |
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if (odView[i].emap != NULL) |
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free((char *)odView[i].emap); |
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free((void *)odView[i].emap); |
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} |
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free((char *)odView); |
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free((void *)odView); |
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odView = NULL; |
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odNViews = 0; |
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} |
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return(0); |
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/* assign larger alignment types earlier */ |
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odS.f = (union ODfunion *)odS.base; |
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odS.redraw = (int4 *)(odS.f + n); |
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odS.redraw = (int32 *)(odS.f + n); |
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odS.ip = (short (*)[2])(odS.redraw + n/32); |
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odS.brt = (TMbright *)(odS.ip + n); |
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odS.chr = (BYTE (*)[3])(odS.brt + n); |
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odS.rgb = (BYTE (*)[3])(odS.chr + n); |
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odS.chr = (uby8 (*)[3])(odS.brt + n); |
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odS.rgb = (uby8 (*)[3])(odS.chr + n); |
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odS.nsamp = n; |
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} |
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if (!n) |
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if (odView[i].vlow < 1) odView[i].vlow = 1; |
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odView[i].emap = NULL; |
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odView[i].dmap = NULL; |
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odView[i].pmap = (int4 *)calloc(FL4NELS(res[0]*res[1]), |
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sizeof(int4)); |
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odView[i].pmap = (int32 *)calloc(FL4NELS(res[0]*res[1]), |
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sizeof(int32)); |
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if (odView[i].pmap == NULL) |
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return(0); |
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j = odView[i].hlow*odView[i].vlow; |
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int |
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sampcmp(s0, s1) /* sample order, descending proximity */ |
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int *s0, *s1; |
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sampcmp( /* sample order, descending proximity */ |
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const void *s0, |
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const void *s1 |
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) |
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{ |
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register double diff = odS.closeness(*s1) - odS.closeness(*s0); |
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double diff = odS.closeness(*(int*)s1) - odS.closeness(*(int*)s0); |
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return (diff > FTINY ? 1 : diff < -FTINY ? -1 : 0); |
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} |
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int |
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odAllocBlockSamp(vn, hh, vh, prox) /* allocate sample from block */ |
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int vn, hh, vh; |
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double prox; |
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odAllocBlockSamp( /* allocate sample from block */ |
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int vn, |
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int hh, |
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int vh, |
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double prox |
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) |
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{ |
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int si[SAMPSPERBLOCK+SAMPSPERBLOCK/4]; |
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int hl, vl; |
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VIEW *vw; |
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FVECT ro, rd; |
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int res[2]; |
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register struct ODblock *bp; |
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register int i, j; |
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struct ODblock *bp; |
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int i, j; |
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/* get block */ |
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hl = hh*odView[vn].hlow/odView[vn].hhi; |
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vl = vh*odView[vn].vlow/odView[vn].vhi; |
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} |
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if (bp->free != ENDFREE) { /* allocate from free list */ |
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i = bp->free; |
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if (odS.ip[i][0] >= 0 & odS.ip[i][1] >= 0) |
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if ((odS.ip[i][0] >= 0) & (odS.ip[i][1] >= 0)) |
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CLR4(odView[vn].pmap, odS.ip[i][1]*odView[vn].hhi + |
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odS.ip[i][0]); |
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bp->free = odS.nextfree(i); |
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} |
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odSample(c, d, p) /* add a sample value */ |
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COLR c; |
266 |
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FVECT d, p; |
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void |
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odSample( /* add a sample value */ |
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COLR c, |
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FVECT d, |
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FVECT p |
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) |
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{ |
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FVECT disp; |
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double d0, d1, h, v, prox; |
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register VIEW *vw; |
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VIEW *vw; |
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int hh, vh; |
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int res[2]; |
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register int i, id; |
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int i, id; |
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|
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DCHECK(odS.nsamp<=0, CONSISTENCY, "no samples allocated in odSample"); |
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/* add value to each view */ |
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if (id < 0) |
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continue; /* not good enough */ |
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/* convert color */ |
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tmCvColrs(&odS.brt[id], odS.chr[id], c, 1); |
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tmCvColrs(tmGlobal, &odS.brt[id], odS.chr[id], (COLR *)c, 1); |
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if (imm_mode | needmapping) /* if immediate mode */ |
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needmapping |= NEWRGB; /* map it later */ |
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else /* else map it now */ |
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tmMapPixels(odS.rgb[id], &odS.brt[id], odS.chr[id], 1); |
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tmMapPixels(tmGlobal, odS.rgb[id], &odS.brt[id], |
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> |
odS.chr[id], 1); |
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SET4(odS.redraw, id); /* mark for redraw */ |
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odView[i].n2redraw++; |
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} |
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} |
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odRemap(newhist) /* recompute tone mapping */ |
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int newhist; |
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void |
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odRemap( /* recompute tone mapping */ |
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int newhist |
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) |
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{ |
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needmapping |= NEWMAP|NEWRGB; |
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if (newhist) |
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} |
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odRedrawAll() /* mark all samples for redraw */ |
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void |
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odRedrawAll(void) /* mark all samples for redraw */ |
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{ |
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register int i; |
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int i; |
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if ((needmapping&(NEWMAP|NEWRGB)) == (NEWMAP|NEWRGB)) |
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return; /* will be called later, anyway */ |
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} |
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odRedraw(vn, hmin, vmin, hmax, vmax) /* redraw view region */ |
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int vn, hmin, vmin, hmax, vmax; |
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void |
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odRedraw( /* redraw view region */ |
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int vn, |
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int hmin, |
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int vmin, |
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int hmax, |
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int vmax |
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) |
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{ |
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int i, j; |
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register struct ODblock *bp; |
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register int k; |
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struct ODblock *bp; |
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int k; |
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|
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if (vn<0 | vn>=odNViews) |
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> |
if ((vn<0) | (vn>=odNViews)) |
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return; |
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/* check view limits */ |
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if (hmin < 0) hmin = 0; |
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if (hmax >= odView[vn].hhi) hmax = odView[vn].hhi-1; |
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if (vmin < 0) vmin = 0; |
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if (vmax >= odView[vn].vhi) vmax = odView[vn].vhi-1; |
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if (hmax <= hmin | vmax <= vmin) |
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> |
if ((hmax <= hmin) | (vmax <= vmin)) |
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return; |
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/* convert to low resolution */ |
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hmin = hmin * odView[vn].hlow / odView[vn].hhi; |
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} |
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odDepthMap(vn, dm) /* assign depth map for view */ |
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< |
int vn; |
400 |
< |
GLfloat *dm; |
398 |
> |
void |
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> |
odDepthMap( /* assign depth map for view */ |
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int vn, |
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> |
GLfloat *dm |
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) |
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{ |
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double d0, d1; |
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int i, j, hmin, hmax, vmin, vmax; |
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< |
register int k, l; |
406 |
> |
int k, l; |
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|
408 |
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if (dm == NULL) { /* free edge map */ |
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< |
if (vn<0 | vn>=odNViews) |
409 |
> |
if ((vn<0) | (vn>=odNViews)) |
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return; /* too late -- they're gone! */ |
411 |
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if (odView[vn].emap != NULL) |
412 |
< |
free((char *)odView[vn].emap); |
412 |
> |
free((void *)odView[vn].emap); |
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odView[vn].emap = NULL; |
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odView[vn].dmap = NULL; |
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return; |
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"bad view number in odDepthMap"); |
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odView[vn].dmap = dm; /* initialize edge map */ |
420 |
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if (odView[vn].emap == NULL) { |
421 |
< |
odView[vn].emap = (int4 *)malloc( |
422 |
< |
FL4NELS(odView[vn].hlow*odView[vn].vlow)*sizeof(int4)); |
421 |
> |
odView[vn].emap = (int32 *)malloc( |
422 |
> |
FL4NELS(odView[vn].hlow*odView[vn].vlow)*sizeof(int32)); |
423 |
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if (odView[vn].emap == NULL) |
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error(SYSTEM, "out of memory in odDepthMap"); |
425 |
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} |
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} |
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|
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< |
odUpdate(vn) /* update this view */ |
474 |
< |
int vn; |
473 |
> |
void |
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> |
odUpdate( /* update this view */ |
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> |
int vn |
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> |
) |
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{ |
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static short primes[] = {9431,6803,4177,2659,1609,887,587,251,47,1}; |
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int myprime; |
480 |
< |
register int i, n; |
480 |
> |
int i, n; |
481 |
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|
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DCHECK(vn<0 | vn>=odNViews, CONSISTENCY, |
483 |
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"bad view number in odUpdate"); |
485 |
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if (needmapping & NEWRGB) { |
486 |
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if (needmapping & NEWMAP) { |
487 |
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if (needmapping & NEWHIST) |
488 |
< |
tmClearHisto(); |
488 |
> |
tmClearHisto(tmGlobal); |
489 |
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needmapping &= ~NEWHIST; |
490 |
< |
if (tmAddHisto(odS.brt,odS.nsamp,1) != TM_E_OK) |
490 |
> |
if (tmAddHisto(tmGlobal, odS.brt,odS.nsamp,1) != TM_E_OK) |
491 |
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return; |
492 |
< |
if (tmComputeMapping(0.,0.,0.) != TM_E_OK) |
492 |
> |
if (tmComputeMapping(tmGlobal, 0.,0.,0.) != TM_E_OK) |
493 |
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return; |
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needmapping &= ~NEWMAP; |
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odRedrawAll(); /* redraw everything */ |
496 |
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} |
497 |
< |
if (tmMapPixels(odS.rgb,odS.brt,odS.chr,odS.nsamp) != TM_E_OK) |
497 |
> |
if (tmMapPixels(tmGlobal, (uby8 *)(odS.rgb), odS.brt, |
498 |
> |
(uby8 *)(odS.chr), odS.nsamp) != TM_E_OK) |
499 |
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return; |
500 |
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needmapping &= ~NEWRGB; |
501 |
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} |
553 |
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clip_end(p, o, vp) /* clip line segment to view */ |
554 |
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GLshort p[3]; |
555 |
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short o[2]; |
556 |
< |
register struct ODview *vp; |
556 |
> |
struct ODview *vp; |
557 |
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{ |
558 |
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if (p[0] < 0) { |
559 |
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p[1] = -o[0]*(p[1]-o[1])/(p[0]-o[0]) + o[1]; |
578 |
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|
579 |
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|
580 |
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static int |
581 |
< |
make_arms(ar, cp, vp, sz) /* make arms for triangle fan */ |
582 |
< |
GLshort ar[MAXFAN][3]; |
583 |
< |
short cp[2]; |
584 |
< |
register struct ODview *vp; |
585 |
< |
double sz; |
581 |
> |
make_arms( /* make arms for triangle fan */ |
582 |
> |
GLshort ar[MAXFAN][3], |
583 |
> |
short cp[2], |
584 |
> |
struct ODview *vp, |
585 |
> |
double sz |
586 |
> |
) |
587 |
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{ |
588 |
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int na, dv; |
589 |
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double hrad, vrad, phi; |
590 |
< |
register int i; |
590 |
> |
int i; |
591 |
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|
592 |
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DCHECK(sz > 1, CONSISTENCY, "super-unary size in make_arms"); |
593 |
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na = MAXFAN*sz + 0.5; /* keep arc length constant */ |
609 |
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|
610 |
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|
611 |
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static int |
612 |
< |
depthchange(vp, x0, y0, x1, y1) /* check depth discontinuity */ |
613 |
< |
register struct ODview *vp; |
614 |
< |
int x0, y0, x1, y1; |
612 |
> |
depthchange( /* check depth discontinuity */ |
613 |
> |
struct ODview *vp, |
614 |
> |
int x0, |
615 |
> |
int y0, |
616 |
> |
int x1, |
617 |
> |
int y1 |
618 |
> |
) |
619 |
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{ |
620 |
< |
register double d0, d1; |
620 |
> |
double d0, d1; |
621 |
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|
622 |
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DCHECK(x0<0 | x0>=vp->hhi | y0<0 | y0>=vp->vhi, |
623 |
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CONSISTENCY, "coordinates off view in depthchange"); |
624 |
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|
625 |
< |
if (x1<0 | x1>=vp->hhi | y1<0 | y1>=vp->vhi) |
625 |
> |
if ((x1<0) | (x1>=vp->hhi) | (y1<0) | (y1>=vp->vhi)) |
626 |
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return(1); |
627 |
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|
628 |
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d0 = vp->dmap[y0*vp->hhi + x0]; |
632 |
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} |
633 |
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|
634 |
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|
635 |
< |
static |
636 |
< |
clip_edge(p, o, vp) /* clip line segment to depth edge */ |
637 |
< |
GLshort p[3]; |
638 |
< |
short o[2]; |
639 |
< |
register struct ODview *vp; |
635 |
> |
static void |
636 |
> |
clip_edge( /* clip line segment to depth edge */ |
637 |
> |
GLshort p[3], |
638 |
> |
short o[2], |
639 |
> |
struct ODview *vp |
640 |
> |
) |
641 |
|
{ |
642 |
|
int x, y, xstep, ystep, rise, rise2, run, run2, n; |
643 |
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|
678 |
|
|
679 |
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|
680 |
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static int |
681 |
< |
getblock(vp, h, v) /* get block index */ |
682 |
< |
register struct ODview *vp; |
683 |
< |
register int h, v; |
681 |
> |
getblock( /* get block index */ |
682 |
> |
struct ODview *vp, |
683 |
> |
int h, |
684 |
> |
int v |
685 |
> |
) |
686 |
|
{ |
687 |
< |
if (h<0 | h>=vp->hhi | v<0 | v>=vp->vhi) |
687 |
> |
if ((h<0) | (h>=vp->hhi) | (v<0) | (v>=vp->vhi)) |
688 |
|
return(-1); |
689 |
|
return(h*vp->hlow/vp->hhi + v*vp->vlow/vp->vhi*vp->hlow); |
690 |
|
} |
691 |
|
|
692 |
|
|
693 |
|
static int |
694 |
< |
blockedge(vp, bi0, bi1) /* check for edge between blocks? */ |
695 |
< |
register struct ODview *vp; |
696 |
< |
register int bi0, bi1; |
694 |
> |
blockedge( /* check for edge between blocks? */ |
695 |
> |
struct ODview *vp, |
696 |
> |
int bi0, |
697 |
> |
int bi1 |
698 |
> |
) |
699 |
|
{ |
700 |
|
if (bi1 == bi0) |
701 |
|
return(0); /* same block */ |
710 |
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} |
711 |
|
|
712 |
|
|
713 |
< |
odDrawSamp(vn, id) /* draw view sample */ |
714 |
< |
int vn; |
715 |
< |
register int id; |
713 |
> |
static void |
714 |
> |
odDrawSamp( /* draw view sample */ |
715 |
> |
int vn, |
716 |
> |
int id |
717 |
> |
) |
718 |
|
{ |
719 |
|
GLshort arm[MAXFAN][3]; |
720 |
|
int narms, blockindex; |
721 |
< |
register struct ODview *vp; |
721 |
> |
struct ODview *vp; |
722 |
|
double size; |
723 |
|
int home_edges; |
724 |
< |
register int i; |
724 |
> |
int i; |
725 |
|
|
726 |
|
vp = odView + vn; |
727 |
|
blockindex = getblock(vp, odS.ip[id][0], odS.ip[id][1]); |