boundingbox.h

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos 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 3
 * of the License, or (at your option) any later version.
 *
 * xoreos 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 xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef COMMON_BOUNDINGBOX_H
#define COMMON_BOUNDINGBOX_H

#include "glm/mat4x4.hpp"

namespace Common {

class BoundingBox {
public:
    BoundingBox();
    ~BoundingBox();

    void clear();

    bool empty() const;

    const glm::mat4 &getOrigin() const;

    void getMin(float &x, float &y, float &z) const;
    void getMax(float &x, float &y, float &z) const;

    float getWidth () const; 
    float getHeight() const; 
    float getDepth () const; 

    bool isIn(float x, float y         ) const;
    bool isIn(float x, float y, float z) const;

    bool isIn(float x1, float y1, float z1, float x2, float y2, float z2) const;

    void add(float x, float y, float z);
    void add(const BoundingBox &box);

    void translate(float x, float y, float z);
    void scale    (float x, float y, float z);

    void rotate(float angle, float x, float y, float z);

    void transform(const glm::mat4 &m);

    void absolutize();

    BoundingBox getAbsolute() const;

private:
    bool _empty;
    bool _absolute;

    glm::mat4 _origin;

    float _coords[8][3];

    float _min[3];
    float _max[3];

    inline float getCoordMin(int i) const;
    inline float getCoordMax(int i) const;

    bool getIntersection(float fDst1, float fDst2,
                         float x1, float y1, float z1,
                         float x2, float y2, float z2,
                         float &x, float &y, float &z) const;
    bool inBox(float x, float y, float z, float minX, float minY, float minZ,
               float maxX, float maxY, float maxZ, int axis) const;
};

} // End of namespace Common

#endif // COMMON_BOUNDINGBOX_H