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libraries/FastLED/src/noisegen.h

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+/// @file noisegen.h
+/// Noise generation classes
+
+#pragma once
+
+#include "fl/stdint.h"
+#include "noise.h"
+
+#include "fl/math_macros.h"
+#include "fl/namespace.h"
+
+FASTLED_NAMESPACE_BEGIN
+
+
+// Simple noise generator for 1-d waves. Default values will give good results
+// for most cases.
+struct NoiseGenerator {
+    int32_t iteration_scale;
+    unsigned long time_multiplier;
+
+    NoiseGenerator() : iteration_scale(10), time_multiplier(10) {}
+    NoiseGenerator(int32_t itScale, int32_t timeMul) : iteration_scale(itScale), time_multiplier(timeMul) {}
+
+    uint8_t Value(int32_t i, unsigned long time_ms) const {
+        uint32_t input = iteration_scale * i + time_ms * time_multiplier;
+        uint16_t v1 = inoise16(input);
+        return uint8_t(v1 >> 8);
+    }
+
+    int LedValue(int32_t i, unsigned long time_ms) const {
+        int val = Value(i, time_ms);
+        return MAX(0, val - 128) * 2;
+    }
+};
+
+FASTLED_NAMESPACE_END