DrawPolygons.java
// Fig. 13.28: DrawPolygons.java // Drawing polygons. import java.awt.Graphics; import java.awt.Polygon; import javax.swing.JPanel; import javax.swing.JFrame; class PolygonsJPanel extends JPanel { // draw polygons and polylines @Override public void paintComponent(Graphics g) { super.paintComponent(g); // draw polygon with Polygon object int[] xValues = {20, 40, 50, 30, 20, 15}; int[] yValues = {50, 50, 60, 80, 80, 60}; Polygon polygon1 = new Polygon(xValues, yValues, 6); g.drawPolygon(polygon1); // draw polylines with two arrays int[] xValues2 = {70, 90, 100, 80, 70, 65, 60}; int[] yValues2 = {100, 100, 110, 110, 130, 110, 90}; g.drawPolyline(xValues2, yValues2, 7); // fill polygon with two arrays int[] xValues3 = {120, 140, 150, 190}; int[] yValues3 = {40, 70, 80, 60}; g.fillPolygon(xValues3, yValues3, 4); // draw filled polygon with Polygon object Polygon polygon2 = new Polygon(); polygon2.addPoint(165, 135); polygon2.addPoint(175, 150); polygon2.addPoint(270, 200); polygon2.addPoint(200, 220); polygon2.addPoint(130, 180); g.fillPolygon(polygon2); } } // end class PolygonsJPanel public class DrawPolygons { // execute application public static void main(String[] args) { // create frame for PolygonsJPanel JFrame frame = new JFrame("Drawing Polygons"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); PolygonsJPanel polygonsJPanel = new PolygonsJPanel(); frame.add(polygonsJPanel); frame.setSize(280, 270); frame.setVisible(true); } } // end class DrawPolygons
Maintained by John Loomis, updated Wed Feb 08 12:27:07 2017