WaterReflectionMasker.h

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#pragma once
 
#include "common/Result.h"
 
#include <cstdint>
#include <vector>
 
namespace ssq { class Table; }
namespace eve::image { class ImageData; }
 
namespace eve::graphics {
 
struct WaterPlanarReflectionSettings;
 
enum class WaterReflectionMaskChannel { R = 0, G = 1, B = 2, A = 3, RGBA = 4 };
enum class WaterReflectionMaskTransition { Unchanged = 0, Enabled = 1, Disabled = 2 };
 
class EVENGINE_API_BACKENDS WaterReflectionMasker {
public:
    [[nodiscard]] Result<void> configure(WaterReflectionMaskChannel channel, float minimum, float maximum,
                                         bool reflectionsEnabled);
    [[nodiscard]] Result<void> setMask(const image::ImageData& mask);
    void clearMask() noexcept;
    [[nodiscard]] Result<WaterReflectionMaskTransition> evaluate(float playerX, float playerZ,
        float terrainX, float terrainZ, float terrainWidth, float terrainDepth,
        WaterPlanarReflectionSettings& settings);
    bool getEnabled() const noexcept { return enabled_; }
    bool getHeightFeaturesEnabled() const noexcept { return heightFeaturesEnabled_; }
    int getSampleX() const noexcept { return sampleX_; }
    int getSampleY() const noexcept { return sampleY_; }
 
private:
    struct Pixel { float r=0.f,g=0.f,b=0.f,a=0.f; };
    WaterReflectionMaskChannel channel_ = WaterReflectionMaskChannel::R;
    float minimum_ = .35f;
    float maximum_ = 1.f;
    int width_ = 0;
    int height_ = 0;
    std::vector<Pixel> pixels_;
    bool enabled_ = false;
    bool heightFeaturesEnabled_ = false;
    int sampleX_ = -1;
    int sampleY_ = -1;
};
 
EVENGINE_API_BACKENDS void exposeWaterReflectionMaskerBindings(ssq::Table& table);
 
}  // namespace eve::graphics