23 lines
547 B
C++
23 lines
547 B
C++
#include <cstdint>
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#include "window.hpp"
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#include "noise/perlin.hpp"
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int random(uint32_t *img, bool &needUpdate) {
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if (!needUpdate)
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return 0;
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needUpdate = false;
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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 r = (PerlinNoise.noise(x * 0.0001 + time, (y * 00.001) + time)) * 0.5;
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int color = static_cast<int>((r + 1) * 127.5);
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img[y * WIDTH + x] = (color << 16) >> 1| (color << 8) | 0;
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}
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}
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time += 0.01;
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needUpdate = true;
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return 0;
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}
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