IvfLight.h

//
// Copyright 1999-2006 by Structural Mechanics, Lund University.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library 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.
//
// Please report all bugs and problems to "ivf@byggmek.lth.se".
//
//
// Written by Jonas Lindemann
//

#ifndef _CIvfLight_h_
#define _CIvfLight_h_

#include <ivf/IvfShape.h>

IvfSmartPointer(CIvfLight);

class IVF_API CIvfLight : public CIvfShape {
public:
        enum TLightType {
                LT_POINT,
                LT_DIRECTIONAL,
                LT_SPOT
        };
private:
        int m_lightn; 
        
        GLfloat m_ambient[4];
        GLfloat m_diffuse[4];
        GLfloat m_specular[4];
        GLfloat m_position[4];
        GLint m_constatt;
        GLint m_linatt;
        GLint m_quadatt;

        float m_spotCutoff;
        float m_spotDirection[3];
        float m_spotExponent;

        TLightType m_lightType;
        bool m_enabled;
public:
        CIvfLight();
        virtual ~CIvfLight();

        void enable();

        void disable();

        bool isEnabled();

        void setNumber(int number);

        IvfClassInfo("CIvfLight",CIvfShape);

        void setAmbientColor( const float r, const float g, 
                const float b, const float a );
        void setDiffuseColor( const float r, const float g, 
                const float b, const float a );
        void setSpecularColor( const float r, const float g, 
                const float b, const float a );
        
        void setLightPosition( const float x, const float y, const float z, const float w );
        void setLightPosition( const float x, const float y, const float z);
        void setDirection( const float x, const float y, const float z);

        void setConstAtt( const int a );
        
        void setLinAtt( const int a );

        void setQuadAtt( const int a );

        void getAmbientColor( float &r, float &g, float &b, float &a ) const;

        void getDiffuseColor( float &r, float &g, float &b, float &a ) const;

        void getSpecularColor( float &r, float &g, float &b, float &a ) const;
        
        void getLightPosition( float &x, float &y, float &z, float &w ) const;

        void getConstAtt( int &a ) const;

        void getLinAtt( int &a ) const;

        void getQuadAtt( int &a ) const;

        void setSpotExponent(float exponent);

        float getSpotExponent();

        void setSpotCutoff(float cutoff);

        float getSpotCutoff();

        void setSpotDirection(float ex, float ey, float ez);

        void getSpotDirection(float &ex, float &ey, float &ez);

        void setType(TLightType lightType);

        TLightType getType();

protected:
        virtual void createGeometry();
};

#endif 

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