148 lines
3.8 KiB
C++
148 lines
3.8 KiB
C++
/*
|
|
* $Id$
|
|
*
|
|
* ***** BEGIN GPL LICENSE BLOCK *****
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
|
|
* All rights reserved.
|
|
*
|
|
* The Original Code is: all of this file.
|
|
*
|
|
* Contributor(s): none yet.
|
|
*
|
|
* ***** END GPL LICENSE BLOCK *****
|
|
*/
|
|
|
|
/** \file SG_BBox.h
|
|
* \ingroup bgesg
|
|
* \brief Bounding Box
|
|
*/
|
|
|
|
#ifndef __SG_BBOX_H__
|
|
#define __SG_BBOX_H__
|
|
|
|
#include "MT_Scalar.h"
|
|
#include "MT_Point3.h"
|
|
#include "MT_Vector3.h"
|
|
#include "MT_Transform.h"
|
|
|
|
#include <vector>
|
|
|
|
#ifdef WITH_CXX_GUARDEDALLOC
|
|
#include "MEM_guardedalloc.h"
|
|
#endif
|
|
|
|
class SG_Node;
|
|
|
|
/**
|
|
* Bounding box class.
|
|
* Holds the minimum and maximum axis aligned points of a node's bounding box,
|
|
* in world coordinates.
|
|
*/
|
|
class SG_BBox
|
|
{
|
|
MT_Point3 m_min;
|
|
MT_Point3 m_max;
|
|
public:
|
|
typedef enum { INSIDE, INTERSECT, OUTSIDE } intersect;
|
|
SG_BBox();
|
|
SG_BBox(const MT_Point3 &min, const MT_Point3 &max);
|
|
SG_BBox(const SG_BBox &other, const MT_Transform &world);
|
|
SG_BBox(const SG_BBox &other);
|
|
~SG_BBox();
|
|
|
|
/**
|
|
* Enlarges the bounding box to contain the specified point.
|
|
*/
|
|
SG_BBox& operator +=(const MT_Point3 &point);
|
|
/**
|
|
* Enlarges the bounding box to contain the specified bound box.
|
|
*/
|
|
SG_BBox& operator +=(const SG_BBox &bbox);
|
|
|
|
SG_BBox operator + (const SG_BBox &bbox2) const;
|
|
#if 0
|
|
/**
|
|
* Translates the bounding box.
|
|
*/
|
|
void translate(const MT_Vector3 &dx);
|
|
/**
|
|
* Scales the bounding box about the optional point.
|
|
*/
|
|
void scale(const MT_Vector3 &size, const MT_Point3 &point = MT_Point3(0., 0., 0.));
|
|
#endif
|
|
SG_BBox transform(const MT_Transform &world) const;
|
|
/**
|
|
* Computes the volume of the bounding box.
|
|
*/
|
|
MT_Scalar volume() const;
|
|
|
|
/**
|
|
* Test if the given point is inside this bounding box.
|
|
*/
|
|
bool inside(const MT_Point3 &point) const;
|
|
|
|
/**
|
|
* Test if the given bounding box is inside this bounding box.
|
|
*/
|
|
bool inside(const SG_BBox &other) const;
|
|
|
|
/**
|
|
* Test if the given bounding box is outside this bounding box.
|
|
*/
|
|
bool outside(const SG_BBox &other) const;
|
|
|
|
/**
|
|
* Test if the given bounding box intersects this bounding box.
|
|
*/
|
|
bool intersects(const SG_BBox &other) const;
|
|
|
|
/**
|
|
* Test the given bounding box with this bounding box.
|
|
*/
|
|
intersect test(const SG_BBox &other) const;
|
|
|
|
/**
|
|
* Get the eight points that define this bounding box.
|
|
*
|
|
* @param world a world transform to apply to the produced points bounding box.
|
|
*/
|
|
void get(MT_Point3 *box, const MT_Transform &world) const;
|
|
/**
|
|
* Get the eight points that define this axis aligned bounding box.
|
|
* This differs from SG_BBox::get() in that the produced box will be world axis aligned.
|
|
* The maximum & minimum local points will be transformed *before* splitting to 8 points.
|
|
* @param world a world transform to be applied.
|
|
*/
|
|
void getaa(MT_Point3 *box, const MT_Transform &world) const;
|
|
|
|
void getmm(MT_Point3 *box, const MT_Transform &world) const;
|
|
|
|
void split(SG_BBox &left, SG_BBox &right) const;
|
|
|
|
friend class SG_Tree;
|
|
|
|
|
|
#ifdef WITH_CXX_GUARDEDALLOC
|
|
public:
|
|
void *operator new(size_t num_bytes) { return MEM_mallocN(num_bytes, "GE:SG_BBox"); }
|
|
void operator delete( void *mem ) { MEM_freeN(mem); }
|
|
#endif
|
|
};
|
|
|
|
#endif /* __SG_BBOX_H__ */
|