/* * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * -Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * -Redistribution in binary form must reproduct the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * Neither the name of Sun Microsystems, Inc. or the names of contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT * BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE SOFTWARE OR ITS * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN * IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that Software is not designed, licensed or intended for * use in the design, construction, operation or maintenance of any nuclear * facility. */ /* * @(#)Areas.java 1.29 03/01/23 */ package java2d.demos.Clipping; import java.awt.*; import java.awt.event.*; import java.awt.geom.Area; import java.awt.geom.Ellipse2D; import java.awt.geom.GeneralPath; import javax.swing.*; import java2d.ControlsSurface; import java2d.CustomControls; /** * The Areas class demonstrates the CAG (Constructive Area Geometry) * operations: Add(union), Subtract, Intersect, and ExclusiveOR. */ public class Areas extends ControlsSurface { protected String areaType = "nop"; public Areas() { setBackground(Color.white); setControls(new Component[] { new DemoControls(this) }); } public void render(int w, int h, Graphics2D g2) { GeneralPath p1 = new GeneralPath(); p1.moveTo( w * .25f, 0.0f); p1.lineTo( w * .75f, h * .5f); p1.lineTo( w * .25f, (float) h); p1.lineTo( 0.0f, h * .5f); p1.closePath(); GeneralPath p2 = new GeneralPath(); p2.moveTo( w * .75f, 0.0f); p2.lineTo( (float) w, h * .5f); p2.lineTo( w * .75f, (float) h); p2.lineTo( w * .25f, h * .5f); p2.closePath(); Area area = new Area(p1); g2.setColor(Color.yellow); if (areaType.equals("nop")) { g2.fill(p1); g2.fill(p2); g2.setColor(Color.red); g2.draw(p1); g2.draw(p2); return; } else if (areaType.equals("add")) { area.add(new Area(p2)); } else if (areaType.equals("sub")) { area.subtract(new Area(p2)); } else if (areaType.equals("xor")) { area.exclusiveOr(new Area(p2)); } else if (areaType.equals("int")) { area.intersect(new Area(p2)); } else if (areaType.equals("pear")) { double sx = w/100; double sy = h/140; g2.scale(sx, sy); double x = w/sx/2; double y = h/sy/2; // Creates the first leaf by filling the intersection of two Area // objects created from an ellipse. Ellipse2D leaf = new Ellipse2D.Double(x-16, y-29, 15.0, 15.0); Area leaf1 = new Area(leaf); leaf.setFrame(x-14, y-47, 30.0, 30.0); Area leaf2 = new Area(leaf); leaf1.intersect(leaf2); g2.setColor(Color.green); g2.fill(leaf1); // Creates the second leaf. leaf.setFrame(x+1, y-29, 15.0, 15.0); leaf1 = new Area(leaf); leaf2.intersect(leaf1); g2.fill(leaf2); // Creates the stem by filling the Area resulting from the // subtraction of two Area objects created from an ellipse. Ellipse2D stem = new Ellipse2D.Double(x, y-42, 40.0, 40.0); Area st1 = new Area(stem); stem.setFrame(x+3, y-47, 50.0, 50.0); st1.subtract(new Area(stem)); g2.setColor(Color.black); g2.fill(st1); // Creates the pear itself by filling the Area resulting from the // union of two Area objects created by two different ellipses. Ellipse2D circle = new Ellipse2D.Double(x-25, y, 50.0, 50.0); Ellipse2D oval = new Ellipse2D.Double(x-19, y-20, 40.0, 70.0); Area circ = new Area(circle); circ.add(new Area(oval)); g2.setColor(Color.yellow); g2.fill(circ); return; } g2.fill(area); g2.setColor(Color.red); g2.draw(area); } public static void main(String argv[]) { createDemoFrame(new Areas()); } static class DemoControls extends CustomControls implements ActionListener { Areas demo; JToolBar toolbar; JComboBox combo; public DemoControls(Areas demo) { super(demo.name); this.demo = demo; setBackground(Color.gray); add(toolbar = new JToolBar()); toolbar.setFloatable(false); addTool("nop", "no area operation", true); addTool("add", "add", false); addTool("sub", "subtract", false); addTool("xor", "exclusiveOr", false); addTool("int", "intersection", false); addTool("pear", "pear", false); } public void addTool(String str, String tooltip, boolean state) { JButton b = (JButton) toolbar.add(new JButton(str)); b.setBackground(state ? Color.green : Color.lightGray); b.setToolTipText(tooltip); b.setSelected(state); b.addActionListener(this); } public void actionPerformed(ActionEvent e) { for (int i = 0; i < toolbar.getComponentCount(); i++) { JButton b = (JButton) toolbar.getComponentAtIndex(i); b.setBackground(Color.lightGray); } JButton b = (JButton) e.getSource(); b.setBackground(Color.green); demo.areaType = b.getText(); demo.repaint(); } public Dimension getPreferredSize() { return new Dimension(200,37); } public void run() { try { thread.sleep(1111); } catch (Exception e) { return; } Thread me = Thread.currentThread(); while (thread == me) { for (int i = 0; i < toolbar.getComponentCount(); i++) { ((JButton) toolbar.getComponentAtIndex(i)).doClick(); try { thread.sleep(4444); } catch (InterruptedException e) { return; } } } thread = null; } } // End DemoControls } // End Areas