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Java Source | 2002-09-06 | 7.4 KB | 217 lines |
- /*
- * Copyright (c) 2002 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 1.28 02/06/13
- */
-
- 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
-