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/* Copyright (c) 1997 Silicon Graphics, Inc. */ |
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/* SCCSid "$SunId$ SGI" */ |
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/* RCSid $Id$ */ |
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/* |
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* Quadtree data structures for holodeck display drivers. |
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*/ |
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#ifndef _RAD_RHD_QTREE_H_ |
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#define _RAD_RHD_QTREE_H_ |
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#include "color.h" |
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#include "tonemap.h" |
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#include "rhdriver.h" |
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/* child ordering */ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#define DL 0 /* down left */ |
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#define DR 1 /* down right */ |
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#define UL 2 /* up left */ |
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extern struct rleaves { |
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float (*wp)[3]; /* world intersection point array */ |
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int32 *wd; /* world direction array */ |
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TMbright *brt; /* encoded brightness array */ |
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BYTE (*chr)[3]; /* encoded chrominance array */ |
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BYTE (*rgb)[3]; /* tone-mapped color array */ |
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uby8 (*chr)[3]; /* encoded chrominance array */ |
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uby8 (*rgb)[3]; /* tone-mapped color array */ |
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int nl; /* count of leaves in our pile */ |
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int bl, tl; /* bottom and top (next) leaf index */ |
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int tml; /* next leaf needing tone-mapping */ |
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extern RTREE qtrunk; /* trunk of quadtree */ |
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extern double qtDepthEps; /* epsilon to compare depths (z fraction) */ |
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extern int qtMinNodesiz; /* minimum node dimension (pixels) */ |
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extern int rayqleft; /* number of rays to queue before flush */ |
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extern TMstruct *tmGlobal; /* global tone-mapping structure */ |
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/* rhd_qtree.c */ |
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extern int qtAllocLeaves(register int n); |
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extern void qtFreeLeaves(void); |
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extern int qtCompost(int pct); |
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extern void qtReplant(void); |
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extern int qtFindLeaf(int x, int y); |
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extern int qtMapLeaves(int redo); |
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/* rhd_qtree2c.c rhd_qtree2r.c */ |
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extern void qtRedraw(int x0, int y0, int x1, int y1); |
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extern void qtUpdate(void); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _RAD_RHD_QTREE_H_ */ |
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