1 /* 2 * 3 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * - Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * - Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * - Neither the name of Oracle nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 21 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 package java2d.demos.Paths; 33 34 35 import static java.awt.Color.BLACK; 36 import static java.awt.Color.LIGHT_GRAY; 37 import static java.awt.Color.WHITE; 38 import java.awt.Graphics2D; 39 import java.awt.geom.GeneralPath; 40 import java.awt.geom.Path2D; 41 import java2d.Surface; 42 43 44 /** 45 * Rectangles filled to illustrate the GenerPath winding rule, determining 46 * the interior of a path. 47 */ 48 @SuppressWarnings("serial") 49 public class WindingRule extends Surface { 50 WindingRule()51 public WindingRule() { 52 setBackground(WHITE); 53 } 54 55 @Override render(int w, int h, Graphics2D g2)56 public void render(int w, int h, Graphics2D g2) { 57 58 g2.translate(w * .2, h * .2); 59 60 GeneralPath p = new GeneralPath(Path2D.WIND_NON_ZERO); 61 p.moveTo(0.0f, 0.0f); 62 p.lineTo(w * .5f, 0.0f); 63 p.lineTo(w * .5f, h * .2f); 64 p.lineTo(0.0f, h * .2f); 65 p.closePath(); 66 67 p.moveTo(w * .05f, h * .05f); 68 p.lineTo(w * .55f, h * .05f); 69 p.lineTo(w * .55f, h * .25f); 70 p.lineTo(w * .05f, h * .25f); 71 p.closePath(); 72 73 g2.setColor(LIGHT_GRAY); 74 g2.fill(p); 75 g2.setColor(BLACK); 76 g2.draw(p); 77 g2.drawString("NON_ZERO rule", 0, -5); 78 79 g2.translate(0.0f, h * .45); 80 81 p.setWindingRule(Path2D.WIND_EVEN_ODD); 82 g2.setColor(LIGHT_GRAY); 83 g2.fill(p); 84 g2.setColor(BLACK); 85 g2.draw(p); 86 g2.drawString("EVEN_ODD rule", 0, -5); 87 } 88 main(String[] s)89 public static void main(String[] s) { 90 createDemoFrame(new WindingRule()); 91 } 92 } 93