// Dartmouth CS 2, Winter 2009, Chris Bailey-Kellogg
// Notes 10 | Sketch 6

Orbiter ball;

void setup()
{
  size(400,300);
  smooth();
  noStroke();
  background(0);
  
  ball = new Orbiter(width/2,height/2); 
}

void draw()
{
  fill(0,10);
  rect(0,0,width,height);
  ball.draw();
  ball.update();
}

void keyPressed()
{
  if (key=='a') { // orbit angle step size
    if (ball.da > 5) ball.da-=5;
  }
  else if (key=='A') ball.da+=5;
  else if (key=='o') { // orbit size
    if (ball.o > 5) ball.o-=5;
  }
  else if (key=='O') ball.o+=5;
}