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//-----------------------------------------------------------------------------
// BSPLIB HEADER: ObjectBSPNode.h
//
// Copyright (c) 1997-1998 by Markus Hadwiger
// All Rights Reserved.
//-----------------------------------------------------------------------------
#ifndef _OBJECTBSPNODE_H_
#define _OBJECTBSPNODE_H_
// bsplib header files
#include "BspLibDefs.h"
#include "BoundingBox.h"
#include "BspObject.h"
#include "Plane.h"
BSPLIB_NAMESPACE_BEGIN
// node of object bsp tree (a bsp tree of whole objects instead of polygons) --
//
class ObjectBSPNode {
public:
ObjectBSPNode( ObjectBSPNode *front = NULL, ObjectBSPNode *back = NULL, Plane *sep = NULL, BoundingBox *bbox = NULL, int id = -1 );
~ObjectBSPNode() { delete separatorplane; delete boundingbox; delete frontsubtree; delete backsubtree; }
void NumberBSPNodes( int& curno );
void WriteBSPTree( FILE *fp ) const;
BspObject* CreateObjectList();
BspObject* CreateMergedBSPTree();
void DeleteNodeBspObjects();
int getNodeNumber() const { return nodenumber; }
Plane* getSeparatorPlane() const { return separatorplane; }
BoundingBox* getBoundingBox() const { return boundingbox; }
ObjectBSPNode* getFrontSubtree() const { return frontsubtree; }
ObjectBSPNode* getBackSubtree() const { return backsubtree; }
private:
void MergeTreeNodeObjects( BspObject *newobject );
BSPNode* CreateUnifiedBSPTree();
private:
int nodenumber; // this node's id
Plane* separatorplane; // plane inducing two halfspaces; NULL for leaves
BoundingBox* boundingbox; // attached bounding box; NULL for internal nodes
ObjectBSPNode* frontsubtree; // tree in front halfspace
ObjectBSPNode* backsubtree; // tree in back halfspace
};
// construct node -------------------------------------------------------------
inline ObjectBSPNode::ObjectBSPNode( ObjectBSPNode *front, ObjectBSPNode *back, Plane *sep, BoundingBox *bbox, int id )
{
frontsubtree = front;
backsubtree = back;
separatorplane = sep;
boundingbox = bbox;
nodenumber = id;
}
BSPLIB_NAMESPACE_END
#endif // _OBJECTBSPNODE_H_
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