/** Draw the circle with current specifications on screen. */
private void draw() {
if (isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.draw(
this,
color,
new Ellipse2D.Double(
xPosition, yPosition,
diameter, diameter));
canvas.wait(10);
}
}
/*
* Erase the circle on screen.
*/
private void erase() {
Canvas canvas = Canvas.getCanvas();
canvas.erase(new Ellipse2D.Double(xPosition, yPosition, diameter, diameter));
}
/*
* Draw the circle with current specifications on screen.
*/
private void draw() {
Canvas canvas = Canvas.getCanvas();
canvas.setForegroundColour(color);
canvas.fill(new Ellipse2D.Double(xPosition, yPosition, diameter, diameter));
canvas.wait(10);
}
/** Erase the circle on screen. */
private void erase() {
if (isVisible) {
Canvas canvas = Canvas.getCanvas();
canvas.erase(this);
}
}
/** Erase this ball at its current position. */
public void erase() {
canvas.eraseCircle(xPosition, yPosition, diameter);
}
/** Draw this ball at its current position onto the canvas. */
public void draw() {
canvas.setForegroundColor(color);
canvas.fillCircle(xPosition, yPosition, diameter);
}