float x = random(width);
float y = random(height);
float x2 = 0;
float y2 = 0;
float tempx = 0;
float tempy = 0;


void setup() 
{
  size(400, 400);
  strokeWeight(10);
  smooth();
  background(100);
  frameRate(12); 
}

void draw() 
{

  x2 = random(-width, width);
  y2 = random(-height, height); 
  stroke(random(255));
  line(x, y, x2, y2);
  x = x2;
  y = y2;

}