/* ===========================================================
* Orson Charts : a 3D chart library for the Java(tm) platform
* ===========================================================
*
* (C)opyright 2013-2016, by Object Refinery Limited. All rights reserved.
*
* http://www.object-refinery.com/orsoncharts/index.html
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* If you do not wish to be bound by the terms of the GPL, an alternative
* commercial license can be purchased. For details, please see visit the
* Orson Charts home page:
*
* http://www.object-refinery.com/orsoncharts/index.html
*
*/
package com.orsoncharts.graphics3d;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
/**
* Some tests for the methods in {@link Utils3D}.
*/
public class Utils3DTest {
private static final double EPSILON = 0.00000001;
@Test
public void testLength() {
assertEquals(1, Utils3D.length(Point3D.UNIT_X), EPSILON);
assertEquals(1, Utils3D.length(Point3D.UNIT_Y), EPSILON);
assertEquals(1, Utils3D.length(Point3D.UNIT_Z), EPSILON);
assertEquals(0, Utils3D.length(Point3D.ORIGIN), EPSILON);
}
@Test
public void testAngle() {
assertEquals(Math.PI / 2, Utils3D.angle(Point3D.UNIT_X, Point3D.UNIT_Y),
EPSILON);
}
}