CPositionalLight.h

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//==============================================================================
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    \author    <http://www.chai3d.org>
    \author    Francois Conti
    \version   3.2.0 $Rev: 1869 $
*/
//==============================================================================

//------------------------------------------------------------------------------
#ifndef CPositionalLightH
#define CPositionalLightH
//------------------------------------------------------------------------------
#include "lighting/CGenericLight.h"
//--------------------------------------------------------------------------

//------------------------------------------------------------------------------
namespace chai3d {
//------------------------------------------------------------------------------

//==============================================================================
//==============================================================================

//==============================================================================
//==============================================================================
class cPositionalLight : public virtual cGenericLight
{
    //--------------------------------------------------------------------------
    // CONSTRUCTOR & DESTRUCTOR:
    //--------------------------------------------------------------------------

public:

    cPositionalLight(cWorld* a_world);
    
    virtual ~cPositionalLight();


    //-----------------------------------------------------------------------
    // PUBLIC METHODS - LIGHTING PROPERTIES:
    //-----------------------------------------------------------------------

public:

    void setAttConstant(const GLfloat& a_value) { m_attConstant = cClamp(a_value, 0.0f, 1.0f); }

    GLfloat getAttConstant() const { return (m_attConstant); }

    void setAttLinear(const GLfloat& a_value) { m_attLinear = cClamp(a_value, 0.0f, 1.0f); }

    GLfloat getAttLinear() const { return (m_attLinear); }

    void setAttQuadratic(const GLfloat& a_value) { m_attQuadratic = cClamp(a_value, 0.0f, 1.0f); }

    GLfloat getAttQuadratic() const { return (m_attQuadratic); }


    //-----------------------------------------------------------------------
    // METHODS - DISPLAY MODEL:
    //-----------------------------------------------------------------------

public:

    void setDisplaySettings(const double& a_sourceRadius = 0.02,
        const bool a_displayEnabled = true);


    //-----------------------------------------------------------------------
    // PUBLIC MEMBERS - DISPLAY MODEL
    //-----------------------------------------------------------------------

public:

    cColorf m_displaySourceColor;


    //-----------------------------------------------------------------------
    // PROTECTED MEMBERS - LIGHTING PROPERTIES:
    //-----------------------------------------------------------------------

protected:

    GLfloat m_attConstant;
    
    GLfloat m_attLinear;
    
    GLfloat m_attQuadratic;


    //-----------------------------------------------------------------------
    // PROTECTED MEMBERS - DISPLAY MODEL:
    //-----------------------------------------------------------------------

protected:

    double m_displaySourceRadius;


    //-----------------------------------------------------------------------
    // VIRTUAL PROTECTED METHODS:
    //-----------------------------------------------------------------------

protected:

    virtual void renderLightSource(cRenderOptions& a_options);

    virtual void render(cRenderOptions& a_options);
};


//------------------------------------------------------------------------------
} // namespace chai3d
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
#endif
//------------------------------------------------------------------------------