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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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* Holodeck beam support for display process |
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*/ |
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FVECT cp[4], ip[4], pf, pb; |
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double af, ab, sf2, sb2, dfb2, df2, db2, penalty; |
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register int i; |
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/* special case */ |
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+ |
if (hr <= 0 | vr <= 0) |
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return(0); |
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/* compute cell corners in image */ |
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if (!hdbcoord(gc, hp, bi)) |
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error(CONSISTENCY, "bad beam index in npixels"); |
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(ip[1][0]-ip[3][0])*(ip[2][1]-ip[3][1]); |
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af *= af >= 0 ? 0.5 : -0.5; |
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getback: |
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< |
copystruct(&vrev, vp); /* compute reverse view */ |
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> |
vrev = *vp; /* compute reverse view */ |
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for (i = 0; i < 3; i++) { |
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vrev.vdir[i] = -vp->vdir[i]; |
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vrev.vup[i] = -vp->vup[i]; |
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GCOORD *gcp; |
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register struct cellist *cl; |
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{ |
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< |
copystruct(cl->cl+cl->n, gcp); |
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*(cl->cl+cl->n) = *gcp; |
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cl->n++; |
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return(1); |
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} |
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if (cl.cl == NULL) |
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goto memerr; |
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cl.n = 0; /* add cells within pyramid */ |
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< |
visit_cells(org, dir, hp, addcell, &cl); |
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visit_cells(org, dir, hp, addcell, (char *)&cl); |
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if (!cl.n) { |
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< |
free((char *)cl.cl); |
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> |
free((void *)cl.cl); |
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return(NULL); |
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} |
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*np = cl.n * orient; |
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* sorted automatically by visit_cells(), so we don't need this. |
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*/ |
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/* optimize memory use */ |
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< |
cl.cl = (GCOORD *)realloc((char *)cl.cl, cl.n*sizeof(GCOORD)); |
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> |
cl.cl = (GCOORD *)realloc((void *)cl.cl, cl.n*sizeof(GCOORD)); |
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if (cl.cl == NULL) |
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goto memerr; |
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/* sort the list */ |
