21 lines
547 B
C++
21 lines
547 B
C++
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#include <cstdint>
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#include "window.hpp"
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#include "noise/perlin.hpp"
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int cloud(uint32_t *img, int width, int height) {
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static PerlinNoise PerlinNoise;
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static float time = 0.0;
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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float n = PerlinNoise.noise(x / 100.0 + time, (y / 100.0) + time) * 0.5;
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n += PerlinNoise.noise(x / 50.0 + time, (y / 50.0) + time) * 0.25;
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int color = static_cast<int>((n + 1) * 127.5);
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img[y * width + x] = (color << 16) | (color << 8) | color ;
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}
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}
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time += 0.1;
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return 0;
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}
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