GeomMath.hpp

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/*
 * Stellarium
 * Copyright (C) 2011-2012 Andrei Borza (from Scenery3d plug-in)
 * Copyright (C) 2016 Florian Schaukowitsch
 *
 * 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, Suite 500, Boston, MA  02110-1335, USA.
 */


#ifndef _GEOMMATH_HPP_
#define _GEOMMATH_HPP_

#include "VecMath.hpp"

class AABBox
{
public:
    enum Corner
    {
        MinMinMin = 0, MaxMinMin, MaxMaxMin, MinMaxMin,
        MinMinMax, MaxMinMax, MaxMaxMax, MinMaxMax,
        CORNERCOUNT
    };

    enum Face
    {
        Front = 0, Back, Bottom, Top, Left, Right,
        FACECOUNT
    };

    AABBox();
    AABBox(const Vec3f& min, const Vec3f& max);

    void expand(const Vec3f& vec);

    void expand(const AABBox& box);

    void reset();

    bool isValid() const;

    float getVolume() const;

    Vec3f getCorner(AABBox::Corner corner) const;

    Vec4f getPlane(AABBox::Face p) const;

    Vec3f positiveVertex(Vec3f& normal) const;
    Vec3f negativeVertex(Vec3f& normal) const;

    Vec3f min;
    Vec3f max;
};

class Line
{
public:
    Line(const Vec3f &p, const Vec3f &dir);

    Vec3f startPoint;
    Vec3f endPoint;
    Vec3f direction;

    Vec3f getPoint(float val);
};

#endif