HexNoise.h

浏览该文件的文档.

#pragma once
 
#include "hexmap/HexMetrics.h"
 
#include <cstdint>
 
namespace eve::hexmap {
 
class HexNoise {
public:
    static constexpr float kCellScale = 43.3f;
 
    explicit HexNoise(std::uint32_t seed = 0u) noexcept : seed_(seed) {}
 
    void reset(std::uint32_t seed) noexcept { seed_ = seed; }
    [[nodiscard]] std::uint32_t seed() const noexcept { return seed_; }
 
    [[nodiscard]] HexVec4 sample(float worldX, float worldZ) const noexcept;
 
    [[nodiscard]] HexVec3 perturb(HexVec3 position) const noexcept;
 
    [[nodiscard]] float elevationPerturb(float worldX, float worldZ) const noexcept;
 
private:
    [[nodiscard]] float lattice(int ix, int iz, int channel) const noexcept;
 
    std::uint32_t seed_ = 0u;
};
 
}  // namespace eve::hexmap