36 lines
1 KiB
C++
36 lines
1 KiB
C++
#include <cstdint>
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#include <cmath>
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#include "window.hpp"
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#include "noise/perlin.hpp"
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int mountain(uint32_t *img, int width, int height) {
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static PerlinNoise P(9);
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static PerlinNoise P2(1000);
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static PerlinNoise P3(500);
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static float time = 0.0;
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/*basic color sunsine gradient no noise*/
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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 = P2.noise(x / 10 + (time * 0.5), y / 100.0 + (time * 0.5)) * 0.5 + 0.5;
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int color = static_cast<int>(n * 255);
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img[y * width + x] = (0 << 16) | (color << 8) | color;
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}
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}
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/*mountain*/
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for (int x = 0; x < width; x++) {
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float n = P.noise(x / 100.0 + time, 0) * 0.5;
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float n2 = P2.noise(x / 1000.0 , 0) + P2.noise(x / 40.0 + (time * 0.5), 0) * 0.5;
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int y = static_cast<int>((n + 1) * (height >> 1));
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int y2 = static_cast<int>((n2 + 1) * (height >> 1) );
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for (int i = y2; i < height; ++i) {
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img[i * width + x] = 0xf0f0f0;
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}
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for (int i = y; i < height; ++i) {
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img[i * width + x] = 0x151515;
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}
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}
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time += 0.03;
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return 0;
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}
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