39 lines
847 B
C++
39 lines
847 B
C++
#ifndef CG1_TRACER_PERLINNOISE_H
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#define CG1_TRACER_PERLINNOISE_H
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#include "noise.h"
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// Stolen from https://en.wikipedia.org/wiki/Perlin_noise
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class PerlinNoise : public Noise
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{
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public:
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/**
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*
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* @param size
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* @param gridSize
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* @param seed 0 for random seed
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*/
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PerlinNoise(int size, int gridSize, unsigned int seed = 0);
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void renderNoiseThread(int xOffset, int xSize);
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private:
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void generateNoise();
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std::normal_distribution<float> distribution;
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std::mt19937 generator;
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int gridSize;
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std::vector<Vector3d> gradients;
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Vector3d randomGradient();
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float getGradientValue(int x, int y, int z);
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float getCornerValue(Vector3d position, Vector3d corner);
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static void runPerlinNoiseInThread(int xOffset, int xSize, PerlinNoise *noise);
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};
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#endif //CG1_TRACER_PERLINNOISE_H
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