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/* Copyright (c) 1997 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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* Quadtree display support routines for rectangle output. |
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*/ |
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my = (y0 + y1) >> 1; |
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/* see what to do */ |
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if (l[0][0] > mx) |
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quads &= ~(CHF(2)|CHF(0)); |
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quads &= ~(CHF(UL)|CHF(DL)); |
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else if (l[0][1] < mx) |
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quads &= ~(CHF(3)|CHF(1)); |
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quads &= ~(CHF(UR)|CHF(DR)); |
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if (l[1][0] > my) |
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quads &= ~(CHF(1)|CHF(0)); |
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quads &= ~(CHF(DR)|CHF(DL)); |
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else if (l[1][1] < my) |
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quads &= ~(CHF(3)|CHF(2)); |
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quads &= ~(CHF(UR)|CHF(UL)); |
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tp->flgs |= quads; /* mark quadrants for update */ |
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/* climb the branches */ |
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for (i = 0; i < 4; i++) |
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if (is_stump(&qtrunk)) |
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return; |
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< |
if (!qtMapLeaves((lim[0][0]=x0) <= 0 & (lim[1][0]=y0) <= 0 & |
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(lim[0][1]=x1) >= odev.hres-1 & (lim[1][1]=y1) >= odev.vres-1)) |
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if (!qtMapLeaves(((lim[0][0]=x0) <= 0) & ((lim[1][0]=y0) <= 0) & |
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((lim[0][1]=x1) >= odev.hres-1) & ((lim[1][1]=y1) >= odev.vres-1))) |
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return; |
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redraw(&qtrunk, 0, 0, odev.hres, odev.vres, lim); |
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} |
