Noise Angle

/*

  Move at an angle determined by noise

*/

float noiseScale = 0.02;

float noisePosition = 0;

float x, y;

float moveSpeed = 4;

void setup() {

  size( 800, 800);

  x = width/2;

  y = height/2;

  noStroke();

}

​

void draw() {

  //background(0);

  float angle = radians( noise(noisePosition) * 360);  

  noisePosition += noiseScale;

​

  x = x + cos(angle) * moveSpeed;

  y = y + sin(angle) * moveSpeed;

​

  ellipse(x, y, 5, 5);

​

  // constrain the movement to the screen

  if (x > width) {

    x = 0;

  } else if (x < 0) {

    x = width;

  } 

  if (y > height) {

    y = 0;

  } else if (y < 0) {

    y = height;

  }

}

​