Method mapNoiseToLEDsUsingPalette

src/fl/fx/2d/noisepalette.cpp.hpp:109–140

}

void NoisePalette::mapNoiseToLEDsUsingPalette(fl::span<CRGB> leds) {
    static u8 ihue = 0; // okay static in header

    for (u16 i = 0; i < width; i++) {
        for (u16 j = 0; j < height; j++) {
            // We use the value at the (i,j) coordinate in the noise
            // array for our brightness, and the flipped value from (j,i)
            // for our pixel's index into the color palette.

            u8 index = noise[i * height + j];
            u8 bri = noise[j * width + i];

            // if this palette is a 'loop', add a slowly-changing base value
            if (colorLoop) {
                index += ihue;
            }

            // brighten up, as the color palette itself often contains the
            // light/dark dynamic range desired
            if (bri > 127) {
                bri = 255;
            } else {
                bri = dim8_raw(bri * 2);
            }

            CRGB color = ColorFromPalette(currentPalette, index, bri);
            leds[XY(i, j)] = color;
        }
    }

    ihue += 1;
}

void NoisePalette::fillnoise8() {
    // If we're running at a low "speed", some 8-bit artifacts become