/* * * Copyright (c) 2007, 2018, 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: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions 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 nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 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. */ @SuppressWarnings("serial") public class Areas extends ControlsSurface { protected String areaType = "nop"; public Areas() { setBackground(WHITE); setControls(new Component[] { new DemoControls(this) }); } @Override 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, h); p1.lineTo(0.0f, h * .5f); p1.closePath(); GeneralPath p2 = new GeneralPath(); p2.moveTo(w * .75f, 0.0f); p2.lineTo(w, h * .5f); p2.lineTo(w * .75f, 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 final class DemoControls extends CustomControls implements ActionListener { Areas demo; JToolBar toolbar; 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 = b.getPreferredSize().width; Dimension prefSize = new Dimension(width, 21); b.setPreferredSize(prefSize); b.setMaximumSize(prefSize); b.setMinimumSize(prefSize); } @Override 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(); } @Override public Dimension getPreferredSize() { return new Dimension(200, 40); } @Override @SuppressWarnings("SleepWhileHoldingLock") 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