| /* |
| * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4374642 |
| * @summary Verifies that the Rectangle2D.createIntersection method produces |
| * an empty result rectangle if the two source rects did not intersect |
| */ |
| |
| import java.awt.Canvas; |
| import java.awt.Color; |
| import java.awt.Dimension; |
| import java.awt.Frame; |
| import java.awt.Graphics; |
| import java.awt.Graphics2D; |
| import java.awt.event.WindowAdapter; |
| import java.awt.event.WindowEvent; |
| import java.awt.geom.Rectangle2D; |
| |
| public class CreateIntersectBug extends Canvas { |
| public static boolean showresults = false; |
| |
| public static RuntimeException t = null; |
| |
| public static void main(String[] args) { |
| showresults = (args.length > 0); |
| test(50, 50, 20, 20, 100, 100, 100, 100); |
| test(-100, -100, 50, 50, 100, 100, 50, 50); |
| if (t != null) { |
| throw t; |
| } |
| } |
| |
| public static void test(int x1, int y1, int w1, int h1, |
| int x2, int y2, int w2, int h2) |
| { |
| Rectangle2D r1 = new Rectangle2D.Double(x1, y1, w1, h1); |
| Rectangle2D r2 = new Rectangle2D.Double(x2, y2, w2, h2); |
| |
| write(r1, "R1"); |
| write(r2, "R2"); |
| if (r1.intersects(r2)) { |
| System.out.println("r1 and r2 intersect"); |
| } else { |
| System.out.println("r1 and r2 don't intersect"); |
| } |
| Rectangle2D r3 = r1.createIntersection(r2); |
| write(r3, "intersect"); |
| |
| Rectangle2D r4 = r1.createUnion(r2); |
| write(r4, "union"); |
| |
| if (showresults) { |
| new CreateIntersectBug(r1, r2, r3, r4); |
| } |
| if (!r1.intersects(r2) && !r3.isEmpty()) { |
| String s = ("Intersection of non-intersecting "+ |
| "rectangles is not empty!"); |
| t = new RuntimeException(s); |
| System.out.println(s); |
| } |
| } |
| |
| private Rectangle2D r1, r2, r3, r4; |
| |
| public CreateIntersectBug(Rectangle2D r1, Rectangle2D r2, |
| Rectangle2D r3, Rectangle2D r4) |
| { |
| this.r1 = r1; |
| this.r2 = r2; |
| this.r3 = r3; |
| this.r4 = r4; |
| |
| Frame f = new Frame(); |
| f.add(this); |
| f.addWindowListener(new WindowAdapter() { |
| public void windowClosing(WindowEvent e) {System.exit(0);} |
| }); |
| f.pack(); |
| f.show(); |
| } |
| |
| public Dimension getPreferredSize() { |
| return new Dimension(500, 500); |
| } |
| |
| |
| public void paint(Graphics g){ |
| Graphics2D g2 = (Graphics2D) g; |
| |
| // graphic aids to understanding - these have no |
| // effect on the problem. |
| if (!r1.intersects(r2) && !r3.isEmpty()) { |
| g2.setColor(Color.red); |
| } else { |
| g2.setColor(Color.green); |
| } |
| g2.draw(r3); |
| g2.setColor(Color.yellow); |
| g2.draw(r4); |
| g2.setColor(Color.blue); |
| g2.draw(r1); |
| g2.draw(r2); |
| } |
| |
| public static void write(Rectangle2D r, String s) { |
| System.out.println(s + ": (" + |
| (int)r.getX() + "," + (int)r.getY() + "," |
| + (int)r.getWidth() + "," + (int)r.getHeight() + |
| ")"); |
| } |
| } |