Sky.hpp

#pragma once
 
#include "scene/Object.hpp"
#include "resources/ResourcesManager.hpp"
#include "system/Codable.hpp"
#include "Common.hpp"
 
class Sky final : public Object {
 
public:
    explicit Sky(Storage options);
 
    void update(double fullTime, double frameTime) override;
 
    bool decode(const KeyValues & params, Storage options) override;
    
    KeyValues encode() const override;
    
    const glm::vec3 & direction() const { return _sunDirection; }
 
    struct AtmosphereParameters {
        glm::vec3 sunColor = glm::vec3(1.474f, 1.8504f, 1.91198f); 
        glm::vec3 kRayleigh = glm::vec3(5.5e-6f, 13.0e-6f, 22.4e-6f); 
        float groundRadius = 6371e3f; 
        float topRadius = 6471e3f; 
        float sunIntensity = 20.0f; 
        float kMie = 21e-6f; 
        float heightRayleigh = 8000.0f; 
        float heightMie = 1200.0f; 
        float gMie = 0.758f; 
        float sunRadius = 0.04675f; 
        float sunRadiusCos = 0.998f; 
    };
 
private:
    Animated<glm::vec3> _sunDirection { glm::vec3(0.0f, 1.0f, 0.0f) }; 
};