/* * @(#)Areas.java 1.38 10/03/23 * * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * -Redistribution of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * -Redistribution in binary form must reproduce 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 Oracle 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 MICROSYSTEMS, INC. ("SUN") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE, * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. */ /* * @(#)Areas.java 1.38 10/03/23 */ 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; import static java.awt.Color.*; /** * 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(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(YELLOW); if (areaType.equals("nop")) { g2.fill(p1); g2.fill(p2); g2.setColor(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(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(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(YELLOW); g2.fill(circ); return; } g2.fill(area); g2.setColor(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; 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) { JToggleButton b = (JToggleButton) toolbar.add(new JToggleButton(str)); b.setFocusPainted(false); b.setToolTipText(tooltip); b.setSelected(state); b.addActionListener(this); int width = (int) b.getPreferredSize().width; Dimension prefSize = new Dimension(width, 21); b.setPreferredSize(prefSize); b.setMaximumSize(prefSize); b.setMinimumSize(prefSize); } public void actionPerformed(ActionEvent e) { for (Component comp : toolbar.getComponents()) { ((JToggleButton) comp).setSelected(false); } JToggleButton b = (JToggleButton) e.getSource(); b.setSelected(true); demo.areaType = b.getText(); demo.repaint(); } public Dimension getPreferredSize() { return new Dimension(200,40); } public void run() { try { thread.sleep(1111); } catch (Exception e) { return; } Thread me = Thread.currentThread(); while (thread == me) { for (Component comp : toolbar.getComponents()) { ((AbstractButton) comp).doClick(); try { thread.sleep(4444); } catch (InterruptedException e) { return; } } } thread = null; } } // End DemoControls } // End Areas