void setup() {

  size(800, 800);


  background(255);


  smooth();
  //frameRate(10);
}
float Mspeed;

void draw() {
  Mspeed=abs(mouseX-pmouseX);
  println(Mspeed);
  noStroke();
  float taille_ellipse=Mspeed;


  color ellipse_color = color(5+random(0,10), random(0,21), random(44,255));


  fill(ellipse_color);
  ellipse(mouseX+random(-20,20),mouseY+random(-20,20), taille_ellipse,taille_ellipse);
  if (mousePressed == true) {
    strokeWeight(0.1+Mspeed/20);
    stroke(0, 50);
    strokeWeight(0.1+Mspeed/20);
    line(mouseX, mouseY, width, mouseX);
    line(mouseX, mouseY, 0, mouseX);
    noStroke();
    strokeWeight(0.5+Mspeed/20);
    line(pmouseX, pmouseY, mouseX, mouseY);
  }


  if (keyPressed == true) {


    background(255);
  }
}

void mouseMoved() {

}