28 lines
857 B
C
28 lines
857 B
C
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// Copyright 2020 Phyronnaz
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#pragma once
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#include "CoreMinimal.h"
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#include "VoxelFastNoiseBase.h"
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template<typename T>
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class TVoxelFastNoise_SimplexNoise : public T
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{
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public:
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DEFINE_VOXEL_NOISE_CLASS()
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GENERATED_VOXEL_NOISE_FUNCTION_2D(Simplex)
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GENERATED_VOXEL_NOISE_FUNCTION_3D(Simplex)
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GENERATED_VOXEL_NOISE_FUNCTION_FRACTAL_2D(Simplex, Simplex)
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GENERATED_VOXEL_NOISE_FUNCTION_FRACTAL_3D(Simplex, Simplex)
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protected:
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static constexpr v_flt SQRT3 = v_flt(1.7320508075688772935274463415059);
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static constexpr v_flt F2 = v_flt(0.5) * (SQRT3 - v_flt(1.0));
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static constexpr v_flt G2 = (v_flt(3.0) - SQRT3) / v_flt(6.0);
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static constexpr v_flt F3 = 1 / v_flt(3);
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static constexpr v_flt G3 = 1 / v_flt(6);
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v_flt SingleSimplex_2D(uint8 offset, v_flt x, v_flt y) const;
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v_flt SingleSimplex_3D(uint8 offset, v_flt x, v_flt y, v_flt z) const;
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};
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