SceneWind.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 SceneWind {
public:
    [[nodiscard]] Result<void> setMainWind(const glm::vec3& metersPerSecond);
    [[nodiscard]] Result<void> setCurlStrength(float metersPerSecond);
    [[nodiscard]] Result<void> setCurlFrequency(float frequency);
    [[nodiscard]] Result<void> setCurlTimeScale(float scale);
    [[nodiscard]] Result<void> setResponseRate(float metersPerSecondPerSecond);
 
    [[nodiscard]] glm::vec3 mainWind() const noexcept { return currentMain_; }
    [[nodiscard]] float curlStrength() const noexcept { return currentCurl_; }
    [[nodiscard]] float curlFrequency() const noexcept { return curlFrequency_; }
    [[nodiscard]] float curlTimeScale() const noexcept { return curlTimeScale_; }
 
    [[nodiscard]] Result<void> tick(float dt);
 
    [[nodiscard]] glm::vec3 sample(const glm::vec3& world, float timeSeconds) const noexcept;
 
private:
    glm::vec3 targetMain_{0.f};
    glm::vec3 currentMain_{0.f};
    float targetCurl_ = 0.f;
    float currentCurl_ = 0.f;
    float curlFrequency_ = 0.15f;
    float curlTimeScale_ = 1.f;
    float responseRate_ = 4.f;
};
 
}  // namespace eve::graphics::fog