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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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/* SCCSid "$SunId$ SGI" */ |
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/* RCSid: $Id$ */ |
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/* |
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* sm_qtree.h - header file for routines using spherical quadtrees. |
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* |
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* adapted from octree.h |
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*/ |
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#ifndef _RAD_SM_QTREE_H_ |
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#define _RAD_SM_QTREE_H_ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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/* |
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* An quadtree is expressed as an integer which is either |
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* an index to 4 other nodes, the empty tree, or an index |
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* |
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* < -1: it is an index to a set of objects |
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*/ |
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#include "object.h" |
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typedef struct _FUNC { |
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int (*func)(); |
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int (*func_after)(); |
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#ifndef QT_MAX_BLK |
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#ifdef BIGMEM |
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#define QT_MAX_BLK 16383 /* maximum quadtree block */ |
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#else |
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#ifdef SMLMEM |
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#define QT_MAX_BLK 2047 /* maximum quadtree block */ |
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#else |
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#define QT_MAX_BLK 16383 /* maximum quadtree block */ |
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#endif |
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#endif |
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extern QUADTREE qtnewleaf(), qtaddelem(), qtdelelem(); |
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extern QUADTREE *quad_block[QT_MAX_BLK]; /* quadtree blocks */ |
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extern int4 *quad_flag; /* zeroeth quadtree flag */ |
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extern int32 *quad_flag; /* zeroeth quadtree flag */ |
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extern OBJECT **qtsettab; /* quadtree leaf node table */ |
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extern QUADTREE qtnumsets; /* number of used set indices */ |
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extern int4 *qtsetflag; |
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extern int32 *qtsetflag; |
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#ifdef DEBUG |
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extern OBJECT *qtqueryset(); |
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#else |
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extern QUADTREE qtRoot_trace_ray(); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _RAD_SM_QTREE_H_ */ |
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