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