terrain_info.hpp

//
//  SuperTuxKart - a fun racing game with go-kart
//  Copyright (C) 2007-2015 Joerg Henrichs
//
//  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 3
//  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
//  MERCHANTe ABILITY 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
#ifndef HEADER_TERRAIN_INFO_HPP
#define HEADER_TERRAIN_INFO_HPP
 
#include "utils/vec3.hpp"
 
class btTransform;
class Material;
 
class TerrainInfo
{
private:
    Vec3              m_normal;
    const Material   *m_material;
    const Material   *m_last_material;
    Vec3              m_hit_point;
 
    Vec3 m_origin_ray;
 
public:
             TerrainInfo();
             TerrainInfo(const Vec3 &pos);
    virtual ~TerrainInfo() {};
 
    bool     getSurfaceInfo(const Vec3 &from, Vec3 *position,
                            const Material **m);
    virtual void update(const btMatrix3x3 &rotation, const Vec3 &from);
    virtual void update(const Vec3 &from);
    virtual void update(const Vec3 &from, const Vec3 &towards);
 
    // ------------------------------------------------------------------------
    virtual void update(const btMatrix3x3 &rotation)
    {
        update(rotation, Vec3(0,0,0));
    }
    // ------------------------------------------------------------------------
    float getHoT()                       const {return m_hit_point.getY(); }
    // ------------------------------------------------------------------------
    const Material *getMaterial()        const {return m_material;     }
    // ------------------------------------------------------------------------
    const Material *getLastMaterial()    const {return m_last_material;}
    // ------------------------------------------------------------------------
    const Vec3 &getNormal()              const {return m_normal;       }
    // ------------------------------------------------------------------------
    float getTerrainPitch(float heading) const;
    // ------------------------------------------------------------------------
    const btVector3& getHitPoint() const { return m_hit_point; }
    const Vec3& getOrigin() const { return m_origin_ray;  }
 
};  // TerrainInfo
 
#endif // HEADER_TERRAIN_INFO_HPP