public class CircleAnimation implements Animation {

        int radius;
        int framesPerRotation;

        private CircleAnimation(int radius, int framesPerRotation) {
            this.radius = radius;
            this.framesPerRotation = framesPerRotation;
        }

        public void animate(int frame) {
            double angle = 2 * Math.PI / framesPerRotation;
            Figure.this.setX(Figure.this.getX() + (int) (Math.cos((frame * angle) * radius) * 10));
            Figure.this.setY(Figure.this.getY() + (int) (Math.sin((frame * angle) * radius) * 10));
        }
    }