/* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*-   this file is part of rcssserver3D   Fri May 9 2003   Copyright (C) 2002,2003 Koblenz University   Copyright (C) 2003 RoboCup Soccer Server 3D Maintenance Group   $Id: light.h,v 1.8 2004/04/22 17:57:13 rollmark Exp $   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; version 2 of the License.   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., 675 Mass Ave, Cambridge, MA 02139, USA.*/#ifndef KEROSIN_LIGHT_H#define KEROSIN_LIGHT_H#include <kerosin/openglserver/glbase.h>#include "staticmesh.h"#include "oxygen/geometryserver/indexbuffer.h"#include "oxygen/sceneserver/basenode.h"namespace kerosin{class OpenGLServer;class Light : public oxygen::BaseNode{    //    // Function    //public:    Light();    //! gets the light radius    float GetRadius() const;    //! sets the light radius    void SetRadius(float radius);    //! Enable render settings of this light    virtual void Prepare();    //! draw lit triangles of mesh    void RenderLitMesh(boost::shared_ptr<StaticMesh> mesh);    //! flush the internal cached geometry    void FlushCache();    //! update the bounding box    void ComputeBoundingBox();    //! sets the ambient light intensity    void SetAmbient(const RGBA& ambient);    //! returns the ambient light intensity    const RGBA& GetAmbient();    //! sets the diffuse light intensity    void SetDiffuse(const RGBA& diffuse);    //! returns the diffuse light intensitye    const RGBA& GetDiffuse();    //! sets the specular light intensity    void SetSpecular(const RGBA& specular);    //! returns the specular light intensity    const RGBA& GetSpecular();protected:    /** set up RenderServer reference */    virtual void OnLink();    /** reset RenderServer reference */    virtual void OnUnlink();    virtual void DeterminePotentiallyLitTriangles(boost::shared_ptr<StaticMesh>& mesh,                                                  std::vector<unsigned int>& triangles);    //    // Members    //protected:    /** the diffuse light intensity */    RGBA mDiffuse;    /** the ambient light intensity */    RGBA mAmbient;    /** the specular light intensity */    RGBA mSpecular;    /** the allocated OpenGL light constant */    int mGLLight;    float   mRadius;    unsigned int mVP;    unsigned int mFP;    //! position used to invalidate the cache    salt::Vector3f mOldPos;    //! mesh transform used to invalidate the cache    salt::Matrix mMeshOldTransform;    //! state of the cache    bool mCacheFlushed;    // indices of influenced triangles    std::vector<unsigned int> mTriangles;    // per-material cached indices    std::vector<oxygen::IndexBuffer> mCachedIndices;    /** reference to the RenderServer */    boost::shared_ptr<OpenGLServer> mOpenGLServer;};DECLARE_CLASS(Light);} //namespace kerosin#endif //KEROSIN_LIGHT_H