54 lines
1 KiB
C#
54 lines
1 KiB
C#
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public class e2dPerlinNoise
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{
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private int mOctavesCount;
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private e2dPerlinOctave[] mOctaves;
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public e2dPerlinNoise(int octaves, float amplitude, int frequency, float persistence)
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{
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mOctavesCount = octaves;
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if (frequency < 2)
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{
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e2dUtils.Error("Perlin Frequency must be at least 2");
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frequency = 2;
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}
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if (amplitude <= 0f)
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{
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e2dUtils.Error("Perlin Amplitude must be bigger then 0");
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amplitude = 0.1f;
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}
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if (mOctavesCount < 1)
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{
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e2dUtils.Warning("Perlin Octaves Count must be at least 1");
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mOctavesCount = 1;
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}
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int num = frequency;
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float num2 = amplitude;
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mOctaves = new e2dPerlinOctave[mOctavesCount];
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for (int i = 0; i < mOctavesCount; i++)
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{
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mOctaves[i] = new e2dPerlinOctave(num2, num);
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num2 *= persistence;
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num *= 2;
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}
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}
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public void Regenerate()
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{
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for (int i = 0; i < mOctavesCount; i++)
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{
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mOctaves[i].Regenerate();
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}
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}
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public float GetValue(float x)
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{
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float num = 0f;
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for (int i = 0; i < mOctavesCount; i++)
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{
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num += mOctaves[i].GetValue(x);
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}
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return num;
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}
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}
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