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31 lines
587 B
C++
31 lines
587 B
C++
#ifndef NOISE_H
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#define NOISE_H
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#include <ScopMaths.h>
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#include <Chunk.h>
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#include <array>
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#include <random>
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#define NOISE_SIZE 512
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class Noise
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{
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public:
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Noise(const std::uint32_t seed = 42);
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[[nodiscard]] std::array<std::uint32_t, CHUNK_SIZE.y> GetHeight(Scop::Vec2i pos);
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float perlin2D(float x, float y);
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int perlin2D(int x, int y);
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~Noise() = default;
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private:
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std::mt19937 seed;
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std::array<int, NOISE_SIZE> perms;
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void InitPermutation(void);
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float fade(float t);
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float lerp(float a, float b, float t);
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float grad(int hash, float x, float y);
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};
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#endif
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