//Michael schmitz 2003
 int mx = 0;
 int my = 0;
 int px = 0;
 int py = 0;
 int hypo;
 int abstand;
 
void setup() {
size(400,400);
background(55,55,55);
ellipseMode(CENTER_DIAMETER);
rectMode(CENTER_DIAMETER);

 
}









void loop() {

background(55,555,55);
mx = mouseX;
my = mouseY;

hypo = ((mx-200) * (mx-200)) + ((my-200) * (my-200));
abstand = int(sqrt(hypo));

px = (200-mx)/2+mx;
py = (200-my)/2+my;



if(mx<200){
  px = px - abstand/2;
 
}
else if(mx>200){
  px = px + abstand/2;
 
}
stroke(255,255,255);
line(200,200 ,px,py );
line(mx,my, px,py);

fill(255,255,255);
noStroke();
ellipse(200,200,mx/2,my/2);


}