//Use loop() and two variables 
//to animate an ellipse and three lines.


int x=0;
int y=100;

float a = 150;
     

void setup() 
{
  size(300, 300);
  
  stroke(255);
  framerate(30);
}

void loop() 
{
  background(0);
  a = a - 1;
  if (a < 0) { 
    a = height; 
  }
  line(a*1.7, 250, width, 250); 
//verfogt ellipse  
  line(a/5, 150, width, 150); 
  line(a,50, width, 50);  

    ellipseMode(CENTER_DIAMETER);
    fill(0);
ellipse(a,150, a/1.2+15,30);
}