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math/bbox.h

Go to the documentation of this file.

#ifndef MATH_BBOX_H
#define MATH_BBOX_H

/*

  GLT OpenGL C++ Toolkit (LGPL)
  Copyright (C) 2000-2002 Nigel Stewart  

  Email: nigels.com@gmail.com   
  WWW:   http://www.nigels.com/glt/

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include <vector>

#include <math/vector3.h>

class Matrix;
class GltViewport;

class BoundingBox
{
    friend std::ostream &operator<<(std::ostream &os, const BoundingBox &b);

    friend BoundingBox sum         (const BoundingBox &a,const BoundingBox &b);

    friend BoundingBox intersection(const BoundingBox &a,const BoundingBox &b);

public:
    BoundingBox();
    BoundingBox(const Vector &min,const Vector &max);
    
    //
    // Get/Set
    //

          bool &defined();

    const bool  defined() const;

          Vector &min();
    const Vector &min() const;

          Vector &max();
    const Vector &max() const;

    Vector center() const;

    real width() const;

    real height() const;

    real depth() const;

    void points(std::vector<Vector> &p) const;

    //
    // Set operations
    //

    void reset();

    BoundingBox &operator+=(const Vector &p);
    BoundingBox &operator+=(const std::vector<Vector> &p);
    BoundingBox &operator+=(const BoundingBox &box);
    BoundingBox &operator*=(const BoundingBox &box);

    bool operator==(const BoundingBox &box) const;

//  /// Closest distance to box
//  Real   dist(const Vector &pos) const;

    bool inside(const Vector &pos) const;

    bool intersects(const BoundingBox &box) const;

    bool project(const Matrix &model,const Matrix &proj,const GltViewport &view);

//  /// Intersect ray
//  Real   intersect        (const Vector &p0,const Vector &p1) const;
//  /// Intersect ray
//  Vector intersectPosition(const Vector &p0,const Vector &p1) const;

protected:

    bool   _defined;
    Vector _min;
    Vector _max;
};

#endif

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