DirLight.hpp

#pragma once
 
#include <Engine/RaEngine.hpp>
#include <Engine/Scene/Light.hpp>
 
namespace Ra {
namespace Engine {
namespace Scene {
 
class Entity;
 
class RA_ENGINE_API DirectionalLight final : public Ra::Engine::Scene::Light
{
  public:
    explicit DirectionalLight( Entity* entity, const std::string& name = "dirlight" );
    ~DirectionalLight() override = default;
 
    void setDirection( const Eigen::Matrix<Scalar, 3, 1>& dir ) override;
    inline const Eigen::Matrix<Scalar, 3, 1>& getDirection() const;
 
    std::string getShaderInclude() const override;
 
  private:
    Eigen::Matrix<Scalar, 3, 1> m_direction { 0, -1, 0 };
};
 
// ---------------------------------------------------------------------------------------------
// ---- inline methods implementation
 
inline void DirectionalLight::setDirection( const Eigen::Matrix<Scalar, 3, 1>& dir ) {
    m_direction = dir.normalized();
    getRenderParameters().setVariable( "light.directional.direction", m_direction );
}
 
inline const Eigen::Matrix<Scalar, 3, 1>& DirectionalLight::getDirection() const {
    return m_direction;
}
 
} // namespace Scene
} // namespace Engine
} // namespace Ra