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noise_audio2
// as showed on youtube
void noise_audio2() {
read_audio();
CRGBPalette16 Pal( pit3 ); // the red one
y[0] += (bands[4] - 10) * 4;
scale_x[0] = 10000 - (bands[0] * 40);
scale_y[0] = scale_x[0];
byte layer = 0;
for (uint8_t i = 0; i < Width; i++) {
uint32_t ioffset = scale_x[layer] * (i - CentreX);
for (uint8_t j = 0; j < Height; j++) {
uint32_t joffset = scale_y[layer] * (j - CentreY);
uint16_t data = inoise16(x[layer] + ioffset, y[layer] + joffset, z[layer]);
// results in the range of 11k - 51k
// limit results:
if (data < 11000) data = 11000;
if (data > 51000) data = 51000;
// normalize data to a range of 0 - 40000
data = data - 11000;
// scale down
data = data / 161;
noise[layer][i][j] = data;
}
}
// map 1st layer
for (uint8_t y = 0; y < Height; y++) {
for (uint8_t x = 0; x < Width; x++) {
leds[XY(x, y)] = ColorFromPalette( Pal, (millis() / 130) + noise[0][x][y]);
}
}
//2nd layer
CRGBPalette16 Pal2( pit4 ); // the blue one
y[1] -= (bands[7] - 10) * 4;
//z[1] += 9;
scale_x[1] = 10000 - (bands[1] * 40);
scale_y[1] = scale_x[1];
layer = 1;
for (uint8_t i = 0; i < Width; i++) {
uint32_t ioffset = scale_x[layer] * (i - CentreX);
for (uint8_t j = 0; j < Height; j++) {
uint32_t joffset = scale_y[layer] * (j - CentreY);
uint16_t data = inoise16(x[layer] + ioffset, y[layer] + joffset, z[layer]);
// results in the range of 11k - 51k
// limit results:
if (data < 11000) data = 11000;
if (data > 51000) data = 51000;
// normalize data to a range of 0 - 40000
data = data - 11000;
// scale down
data = data / 161;
noise[layer][i][j] = data;
}
}
for (uint8_t y = 0; y < Height; y++) {
for (uint8_t x = 0; x < Width; x++) {
// map 2nd layer
buffer[XY(x, y)] = ColorFromPalette( Pal2, (bands[0] / 4) + noise[1][x][y]);
// add both layers
leds[XY(x, y)] = buffer[XY(x, y)] + leds[XY(x, y)];
}
}
adjust_gamma();
FastLED.show();
}
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