SpotLight.hpp

#pragma once
 
#include "scene/lights/Light.hpp"
#include "scene/Animated.hpp"
#include "scene/Object.hpp"
 
class SpotLight final : public Light {
 
public:
    SpotLight() = default;
 
    SpotLight(const glm::vec3 & worldPosition, const glm::vec3 & worldDirection, const glm::vec3 & color, float innerAngle, float outerAngle, float radius);
 
    void draw(LightRenderer & renderer) override;
 
    void update(double fullTime, double frameTime) override;
 
    void setScene(const BoundingBox & sceneBox) override;
 
    glm::vec3 sample(const glm::vec3 & position, float & dist, float & attenuation) const override;
 
    bool decode(const KeyValues & params);
    
    KeyValues encode() const override;
    
    const glm::vec3 & position() const { return _lightPosition; }
    
    const glm::vec3 & direction() const { return _lightDirection; }
    
    const glm::vec2 & angles() const { return _angles; }
    
    float radius() const { return _radius; }
    
private:
 
    glm::mat4 _projectionMatrix = glm::mat4(1.0f);             
    glm::mat4 _viewMatrix       = glm::mat4(1.0f);             
    Animated<glm::vec3> _lightDirection { glm::vec3(1.0f, 0.0f, 0.0f) }; 
    Animated<glm::vec3> _lightPosition { glm::vec3(0.0f) };              
    glm::vec2 _angles           = glm::vec2(glm::quarter_pi<float>(), glm::half_pi<float>()); 
    float _radius               = 1.0f;                        
};