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/*
* 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() +
")");
}
}
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