GLESPointLight.h

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/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
 
#ifndef META_OCEAN_RENDERING_GLES_POINT_LIGHT_H
#define META_OCEAN_RENDERING_GLES_POINT_LIGHT_H
 
#include "ocean/rendering/glescenegraph/GLESceneGraph.h"
#include "ocean/rendering/glescenegraph/GLESLightSource.h"
 
#include "ocean/rendering/PointLight.h"
 
namespace Ocean
{
 
namespace Rendering
{
 
namespace GLESceneGraph
{
 
/**
 * This class implements a GLESceneGraph point light object.
 * @ingroup renderinggles
 */
class OCEAN_RENDERING_GLES_EXPORT GLESPointLight :
    virtual public GLESLightSource,
    virtual public PointLight
{
    friend class GLESFactory;
 
    public:
 
        /**
         * Returns the position of the light object.
         * @see PointLight::position().
         */
        Vector3 position() const override;
 
        /**
         * Returns the attenuation factors of the point light.
         * @see PointLight::attenuation().
         */
        Vector3 attenuation() const override;
 
        /**
         * Sets the position of the light object.
         * @see PointLight::setPosition().
         */
        void setPosition(const Vector3& position) override;
 
        /**
         * Sets the attenuation factors for the point light.
         * @see PointLight::setAttenuation().
         */
        bool setAttenuation(const Vector3& factors) override;
 
        /**
         * Binds this light source.
         * @see GLESLightSource::bindLight().
         */
        void bindLight(GLESShaderProgram& shaderProgram, const HomogenousMatrix4& camera_T_model, const HomogenousMatrix4& camera_T_world, const SquareMatrix3& normalMatrix, const unsigned int index) override;
 
    protected:
 
        /**
         * Creates a new GLESceneGraph point light object.
         */
        GLESPointLight();
 
        /**
         * Destructs a GLESceneGraph point light object.
         */
        ~GLESPointLight() override;
 
    protected:
 
        /// Light position inside the local coordinate system.
        Vector3 position_;
 
        /// Attenuation factor vector, with order (constant, linear, quadratic).
        Vector3 attenuationFactors_;
};
 
}
 
}
 
}
 
#endif // META_OCEAN_RENDERING_GLES_POINT_LIGHT_H