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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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#include "rhd_qtree.h" |
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static |
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redraw(tp, x0, y0, x1, y1, l) /* mark portion of a tree for redraw */ |
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register RTREE *tp; |
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int x0, y0, x1, y1; |
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int l[2][2]; |
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static void redraw(RTREE *tp, int x0, int y0, int x1, int y1, int l[2][2]); |
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static void update( BYTE ca[3], RTREE *tp, int x0, int y0, int x1, int y1); |
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static void |
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redraw( /* mark portion of a tree for redraw */ |
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register RTREE *tp, |
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int x0, |
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int y0, |
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int x1, |
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int y1, |
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int l[2][2] |
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) |
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{ |
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int quads = CH_ANY; |
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int mx, my; |
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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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} |
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static |
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update(ca, tp, x0, y0, x1, y1) /* update tree display as needed */ |
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BYTE ca[3]; /* returned average color */ |
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register RTREE *tp; |
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int x0, y0, x1, y1; |
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static void |
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update( /* update tree display as needed */ |
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BYTE ca[3], /* returned average color */ |
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register RTREE *tp, |
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int x0, |
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int y0, |
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int x1, |
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int y1 |
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) |
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{ |
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int csm[3], nc; |
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register BYTE *cp; |
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} |
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qtRedraw(x0, y0, x1, y1) /* redraw part or all of our screen */ |
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int x0, y0, x1, y1; |
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extern void |
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qtRedraw( /* redraw part or all of our screen */ |
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int x0, |
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int y0, |
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int x1, |
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int y1 |
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) |
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{ |
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int lim[2][2]; |
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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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} |
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qtUpdate() /* update our tree display */ |
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extern void |
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qtUpdate(void) /* update our tree display */ |
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{ |
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BYTE ca[3]; |
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