a basic function

gistfile1.pde

int rot = 0;

void setup(){
  size(500,500);
}
void draw(){
  background(255);
  pushMatrix();
    rot = rot + 5;
    translate(100,100);
    rotate(radians(rot));
    makeShape();
  popMatrix();
  
  pushMatrix();
    translate(200,200);
    makeShape();
  popMatrix();
}

void makeShape(){
  noFill();
  ellipse(15,15,10,10);
  rect(-30,-30,60,60);
}