// Creates a window and draws a traffic light inside it
private void DrawTrafficLight() {
// Instantiates a Drawing panel
DrawingPanel panel = new DrawingPanel(130, 290);
panel.setTitle("Traffic Light");
// Get graphics from panel
Graphics draw = panel.getGraphics();
// Draw light housing
drawRect(draw, 20, 20, 90, 250, Color.lightGray);
// Draw red light
drawCircle(draw, 30, 30, 70, Color.red);
// Draw yellow light
drawCircle(draw, 30, 110, 70, Color.yellow);
// Draw green light
drawCircle(draw, 30, 190, 70, new Color(0, 127, 0));
}
// Draws nested shapes from the lab
private void drawNestedShapes() {
// Instantiates a Drawing panel
DrawingPanel panel = new DrawingPanel(250, 250);
panel.setTitle("Nested Shapes");
// Get graphics from panel
Graphics draw = panel.getGraphics();
// Draw green square
drawRect(draw, 25, 25, 200, 200, Color.green);
// Draw cyan circle
drawCircle(draw, 25, 25, 200, Color.magenta);
// Draw cyan diamond
draw.setColor(Color.cyan);
draw.fillPolygon(new int[] {125, 224, 124, 25}, new int[] {25, 124, 224, 125}, 4);
// Draw outline around diamond
draw.setColor(Color.black);
draw.drawPolygon(new int[] {125, 224, 124, 25}, new int[] {25, 124, 224, 125}, 4);
}