diff --git a/swt/src/main/java/edu/umd/cs/piccolox/swt/PSWTPath.java b/swt/src/main/java/edu/umd/cs/piccolox/swt/PSWTPath.java index aab1d58..b39c8ed 100644 --- a/swt/src/main/java/edu/umd/cs/piccolox/swt/PSWTPath.java +++ b/swt/src/main/java/edu/umd/cs/piccolox/swt/PSWTPath.java @@ -560,4 +560,14 @@ } setShape(path); } + + /** + * Return the center of this SWT path node, based on its bounds. + * + * @return the center of this SWT path node, based on its bounds + */ + public Point2D getCenter() { + PBounds bounds = getBoundsReference(); + return new Point2D.Double(bounds.x + (bounds.width / 2.0), bounds.y + (bounds.height / 2.0)); + } } \ No newline at end of file diff --git a/swt/src/test/java/edu/umd/cs/piccolox/swt/PSWTPathTest.java b/swt/src/test/java/edu/umd/cs/piccolox/swt/PSWTPathTest.java new file mode 100755 index 0000000..2e1e6c1 --- /dev/null +++ b/swt/src/test/java/edu/umd/cs/piccolox/swt/PSWTPathTest.java @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2008-2009, Piccolo2D project, http://piccolo2d.org + * Copyright (c) 1998-2008, University of Maryland + * 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. + * + * None of the name of the University of Maryland, the name of the Piccolo2D project, or 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 edu.umd.cs.piccolox.swt; + +import java.awt.geom.Point2D; + +import junit.framework.TestCase; + +import edu.umd.cs.piccolo.util.PBounds; + +/** + * Unit test for PSWTPath. + */ +public class PSWTPathTest extends TestCase { + + public void testCenterEmpty() { + PSWTPath path = new PSWTPath(); + + PBounds bounds = path.getBoundsReference(); + assertEquals(0.0d, bounds.getX(), 0.1d); + assertEquals(0.0d, bounds.getY(), 0.1d); + assertEquals(0.0d, bounds.getHeight(), 0.1d); + assertEquals(0.0d, bounds.getWidth(), 0.1d); + + Point2D center = path.getCenter(); + assertEquals(0.0d, center.getX(), 0.1d); + assertEquals(0.0d, center.getY(), 0.1d); + } + + public void testCenter() { + PSWTPath path = PSWTPath.createRectangle(10.0f, 20.0f, 100.0f, 200.0f); + + PBounds bounds = path.getBoundsReference(); + // hard to believe the tolerance in SWT is this poor + assertEquals(10.0d, bounds.getX(), 1.0d); + assertEquals(20.0d, bounds.getY(), 1.0d); + assertEquals(200.0d, bounds.getHeight(), 2.0d); + assertEquals(100.0d, bounds.getWidth(), 2.0d); + + Point2D center = path.getCenter(); + assertEquals(60.0d, center.getX(), 0.1d); + assertEquals(120.0d, center.getY(), 0.1d); + } + + public void testCenterScale() { + PSWTPath path = PSWTPath.createRectangle(10.0f, 20.0f, 100.0f, 200.0f); + path.scale(10.0d); + + PBounds bounds = path.getBoundsReference(); + // hard to believe the tolerance in SWT is this poor + assertEquals(10.0d, bounds.getX(), 1.0d); + assertEquals(20.0d, bounds.getY(), 1.0d); + assertEquals(200.0d, bounds.getHeight(), 2.0d); + assertEquals(100.0d, bounds.getWidth(), 2.0d); + + // center is calculated in terms of local bounds, not full bounds + Point2D center = path.getCenter(); + assertEquals(60.0d, center.getX(), 0.1d); + assertEquals(120.0d, center.getY(), 0.1d); + } + + public void testCenterRotate() { + PSWTPath path = PSWTPath.createRectangle(10.0f, 20.0f, 100.0f, 200.0f); + path.rotate(Math.PI / 8.0d); + + PBounds bounds = path.getBoundsReference(); + // hard to believe the tolerance in SWT is this poor + assertEquals(10.0d, bounds.getX(), 1.0d); + assertEquals(20.0d, bounds.getY(), 1.0d); + assertEquals(200.0d, bounds.getHeight(), 2.0d); + assertEquals(100.0d, bounds.getWidth(), 2.0d); + + // center is calculated in terms of local bounds, not full bounds + Point2D center = path.getCenter(); + assertEquals(60.0d, center.getX(), 0.1d); + assertEquals(120.0d, center.getY(), 0.1d); + } +}