FogProfile.h

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#pragma once
#include "common/Export.h"
 
#include "common/Result.h"
#include "graphics/fog/FogTypes.h"
 
#include <glm/vec3.hpp>
 
namespace eve::graphics::fog {
 
class EVENGINE_API_WORLD FogProfile {
public:
    [[nodiscard]] float extinctionPerDensity() const noexcept { return extinctionPerDensity_; }
    [[nodiscard]] const glm::vec3& albedo() const noexcept { return albedo_; }
    [[nodiscard]] float ambientOcclusion() const noexcept { return ambientOcclusion_; }
    [[nodiscard]] float ambientUp() const noexcept { return ambientUp_; }
    [[nodiscard]] float ambientDown() const noexcept { return ambientDown_; }
    [[nodiscard]] float anisotropy() const noexcept { return anisotropy_; }
 
    [[nodiscard]] Result<void> configure(float extinctionPerDensity, const glm::vec3& albedo,
                                         float ambientOcclusion, float ambientUp, float ambientDown,
                                         float anisotropy);
 
    [[nodiscard]] float extinctionAt(float density) const noexcept;
 
    [[nodiscard]] glm::vec3 scatteringAt(float density) const noexcept;
 
    [[nodiscard]] float phase(float cosTheta) const noexcept;
 
    [[nodiscard]] glm::vec3 ambientRadiance(const glm::vec3& skyUp, const glm::vec3& groundDown,
                                           float density) const noexcept;
 
private:
    float extinctionPerDensity_ = 0.08f;
    glm::vec3 albedo_{0.9f, 0.92f, 0.95f};
    float ambientOcclusion_ = 0.15f;
    float ambientUp_ = 1.f;
    float ambientDown_ = 0.55f;
    float anisotropy_ = 0.35f;
};
 
}  // namespace eve::graphics::fog