fill_2dnoise16()

void fill_2dnoise16	(	CRGB *	leds,
		int	width,
		int	height,
		bool	serpentine,
		uint8_t	octaves,
		uint32_t	x,
		int	xscale,
		uint32_t	y,
		int	yscale,
		uint32_t	time,
		uint8_t	hue_octaves,
		uint16_t	hue_x,
		int	hue_xscale,
		uint16_t	hue_y,
		uint16_t	hue_yscale,
		uint16_t	hue_time,
		bool	blend,
		uint16_t	hue_shift = 0 )

Fill an LED matrix with random colors, using 16-bit noise.

Parameters

leds	pointer to LED array
width	the width of the LED matrix
height	the height of the LED matrix
serpentine	whether the matrix is laid out in a serpentine pattern (alternating left/right directions per row)
octaves	the number of octaves to use for value (brightness) noise
x	x-axis coordinate on noise map for value (brightness) noise
xscale	the scale (distance) between x points when filling in value (brightness) noise
y	y-axis coordinate on noise map for value (brightness) noise
yscale	the scale (distance) between y points when filling in value (brightness) noise
time	the time position for the value (brightness) noise field
hue_octaves	the number of octaves to use for color hue noise
hue_x	x-axis coordinate on noise map for color hue noise
hue_xscale	the scale (distance) between x points when filling in color hue noise
hue_y	y-axis coordinate on noise map for color hue noise.
hue_yscale	the scale (distance) between y points when filling in color hue noise
hue_time	the time position for the color hue noise field
blend	if true, will blend the newly generated LED values into the array. If false, will overwrite the array values directly.
hue_shift	how much to shift the final hues by for every LED

Definition at line 964 of file noise.cpp.

                                                                                                                                                        {
 
  VARIABLE_LENGTH_ARRAY(uint8_t, V, height*width);
  VARIABLE_LENGTH_ARRAY(uint8_t, H, height*width);
  
  memset(V,0,height*width);
  memset(H,0,height*width);
 
  fill_raw_2dnoise16into8((uint8_t*)V,width,height,octaves,q44(2,0),171,1,x,xscale,y,yscale,time);
  // fill_raw_2dnoise16into8((uint8_t*)V,width,height,octaves,x,xscale,y,yscale,time);
  // fill_raw_2dnoise8((uint8_t*)V,width,height,hue_octaves,x,xscale,y,yscale,time);
  fill_raw_2dnoise8((uint8_t*)H,width,height,hue_octaves,hue_x,hue_xscale,hue_y,hue_yscale,hue_time);
 
 
  int w1 = width-1;
  int h1 = height-1;
  hue_shift >>= 8;
 
  for(int i = 0; i < height; ++i) {
    int wb = i*width;
    for(int j = 0; j < width; ++j) {
      CRGB led(CHSV(hue_shift + (H[(h1-i)*width + (w1-j)]), 196, V[i*width + j]));
 
      int pos = j;
      if(serpentine && (i & 0x1)) {
        pos = w1-j;
      }
 
      if(blend) {
        leds[wb+pos] >>= 1; leds[wb+pos] += (led>>=1);
      } else {
        leds[wb+pos] = led;
      }
    }
  }
}

References blend(), fill_raw_2dnoise16into8(), fill_raw_2dnoise8(), hue_octaves, hue_time, leds, octaves, pos, VARIABLE_LENGTH_ARRAY, x, xscale, y, and yscale.

Referenced by loop().

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