Drawing shape with Graphics2D - Java 2D Graphics

Java examples for 2D Graphics:Shape

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Description

Drawing shape with Graphics2D

Demo Code

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.Arc2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Rectangle2D;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main extends JFrame {
  public Main() {
    super("Map");
    setSize(360, 350);/* ww  w .ja v a 2  s.c o m*/
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    MapPane map = new MapPane();
    add(map);
    setVisible(true);
  }

  public static void main(String[] arguments) {
    Main frame = new Main();
  }

}

class MapPane extends JPanel {
  public void paintComponent(Graphics comp) {
    Graphics2D comp2D = (Graphics2D) comp;
    comp2D.setColor(Color.blue);
    comp2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
        RenderingHints.VALUE_ANTIALIAS_ON);
    Rectangle2D.Float background = new Rectangle2D.Float(0F, 0F,
        (float) getSize().width, (float) getSize().height);
    comp2D.fill(background);
    // Draw waves
    comp2D.setColor(Color.white);
    BasicStroke pen = new BasicStroke(2F, BasicStroke.CAP_BUTT,
        BasicStroke.JOIN_ROUND);
    comp2D.setStroke(pen);
    for (int ax = 0; ax < 340; ax += 5)
      for (int ay = 0; ay < 340; ay += 5) {
        Arc2D.Float wave = new Arc2D.Float(ax, ay, 10, 10, 0, -180, Arc2D.OPEN);
        comp2D.draw(wave);
      }
    // Draw Florida
    GradientPaint gp = new GradientPaint(0F, 0F, Color.green, 350F, 350F,
        Color.orange, true);
    comp2D.setPaint(gp);
    GeneralPath fl = new GeneralPath();
    fl.moveTo(10F, 12F);
    fl.lineTo(234F, 15F);
    fl.lineTo(253F, 25F);
    fl.lineTo(261F, 71F);
    fl.lineTo(191F, 118F);
    fl.lineTo(120F, 56F);
    fl.lineTo(94F, 68F);
    fl.lineTo(81F, 49F);
    fl.lineTo(12F, 37F);
    fl.closePath();
    comp2D.fill(fl);
    // Draw ovals
    comp2D.setColor(Color.black);
    BasicStroke pen2 = new BasicStroke();
    comp2D.setStroke(pen2);
    Ellipse2D.Float e1 = new Ellipse2D.Float(235, 120, 15, 15);
    Ellipse2D.Float e2 = new Ellipse2D.Float(225, 130, 125, 15);
    Ellipse2D.Float e3 = new Ellipse2D.Float(245, 130, 15, 15);
    comp2D.fill(e1);
    comp2D.fill(e2);
    comp2D.fill(e3);
  }
}

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