/*
* The MIT License
*
* Copyright (c) 2018-2020 JOML.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package org.joml.test;
import junit.framework.TestCase;
import org.joml.*;
import org.joml.Math;
/**
* Tests for Math.vecLength - addressing <a href="https://github.com/JOML-CI/JOML/issues/131">Issue #131</a>
*
* @author F. Neurath
*/
public class MathTest extends TestCase {
public static void testClamp(){
// Integer value tests
assertEquals(Math.clamp(10,20,0),10);
assertEquals(Math.clamp(10,20,12),12);
assertEquals(Math.clamp(10,20,30),20);
// Double value tests
assertEquals(Math.clamp(10f,20f,0f),10f,.0001f);
assertEquals(Math.clamp(10f,20f,12f),12f,.0001f);
assertEquals(Math.clamp(10f,20f,30f),20f,.0001f);
// Float value tests
assertEquals(Math.clamp(10.0,20.0,0.0),10.0,.0001);
assertEquals(Math.clamp(10.0,20.0,12.0),12.0,.0001);
assertEquals(Math.clamp(10.0,20.0,30.0),20.0,.0001);
}
public static void testDoubleVecLength() {
// Integer value tests
assertEquals(5., Vector2d.length(4, 3), .0001);
assertEquals(6., Vector3d.length(2, -4, 4), .0001);
assertEquals(3., Vector4d.length(2, -1, 0, -2), .0001);
// Floating point value tests
assertEquals(Math.sqrt(.41), Vector2d.length(.4, -.5), .0001);
assertEquals(Math.sqrt(.3), Vector3d.length(.1, -.5, .2), .0001);
assertEquals(1., Vector4d.length(.5, .5, .5, .5), .0001);
}
public static void testFloatVecLength() {
// Integer value tests
assertEquals(5.f, Vector2f.length(4f, 3f), .0001f);
assertEquals(6.f, Vector3f.length(2f, -4f, 4f), .0001f);
assertEquals(3.f, Vector4f.length(2f, -1f, 0f, -2f), .0001f);
// Floating point value tests
assertEquals((float) Math.sqrt(.41f), Vector2f.length(.4f, -.5f), .0001f);
assertEquals((float) Math.sqrt(.3f), Vector3f.length(.1f, -.5f, .2f), .0001f);
assertEquals(1.f, Vector4f.length(.5f, .5f, .5f, .5f), .0001f);
}
public static void testRoundUsing() {
// TRUNCATE
assertEquals(0, Math.roundUsing(0.2f, RoundingMode.TRUNCATE));
assertEquals(0, Math.roundUsing(0.5f, RoundingMode.TRUNCATE));
assertEquals(0, Math.roundUsing(0.9f, RoundingMode.TRUNCATE));
assertEquals(1, Math.roundUsing(1.0f, RoundingMode.TRUNCATE));
assertEquals(0, Math.roundUsing(-0.2f, RoundingMode.TRUNCATE));
assertEquals(0, Math.roundUsing(-0.5f, RoundingMode.TRUNCATE));
assertEquals(0, Math.roundUsing(-0.9f, RoundingMode.TRUNCATE));
assertEquals(-1, Math.roundUsing(-1.0f, RoundingMode.TRUNCATE));
// CEILING
assertEquals(1, Math.roundUsing(0.2f, RoundingMode.CEILING));
assertEquals(1, Math.roundUsing(0.5f, RoundingMode.CEILING));
assertEquals(1, Math.roundUsing(0.9f, RoundingMode.CEILING));
assertEquals(1, Math.roundUsing(1.0f, RoundingMode.CEILING));
assertEquals(0, Math.roundUsing(-0.2f, RoundingMode.CEILING));
assertEquals(0, Math.roundUsing(-0.5f, RoundingMode.CEILING));
assertEquals(0, Math.roundUsing(-0.9f, RoundingMode.CEILING));
assertEquals(-1, Math.roundUsing(-1.0f, RoundingMode.CEILING));
// FLOOR
assertEquals(0, Math.roundUsing(0.2f, RoundingMode.FLOOR));
assertEquals(0, Math.roundUsing(0.5f, RoundingMode.FLOOR));
assertEquals(0, Math.roundUsing(0.9f, RoundingMode.FLOOR));
assertEquals(1, Math.roundUsing(1.0f, RoundingMode.FLOOR));
assertEquals(-1, Math.roundUsing(-0.2f, RoundingMode.FLOOR));
assertEquals(-1, Math.roundUsing(-0.5f, RoundingMode.FLOOR));
assertEquals(-1, Math.roundUsing(-0.9f, RoundingMode.FLOOR));
assertEquals(-1, Math.roundUsing(-1.0f, RoundingMode.FLOOR));
// HALF_DOWN
assertEquals(0, Math.roundUsing(0.2f, RoundingMode.HALF_DOWN));
assertEquals(0, Math.roundUsing(0.5f, RoundingMode.HALF_DOWN));
assertEquals(1, Math.roundUsing(0.9f, RoundingMode.HALF_DOWN));
assertEquals(1, Math.roundUsing(1.0f, RoundingMode.HALF_DOWN));
assertEquals(0, Math.roundUsing(-0.2f, RoundingMode.HALF_DOWN));
assertEquals(0, Math.roundUsing(-0.5f, RoundingMode.HALF_DOWN));
assertEquals(-1, Math.roundUsing(-0.9f, RoundingMode.HALF_DOWN));
assertEquals(-1, Math.roundUsing(-1.0f, RoundingMode.HALF_DOWN));
// HALF_UP
assertEquals(0, Math.roundUsing(0.2f, RoundingMode.HALF_UP));
assertEquals(1, Math.roundUsing(0.5f, RoundingMode.HALF_UP));
assertEquals(1, Math.roundUsing(0.9f, RoundingMode.HALF_UP));
assertEquals(1, Math.roundUsing(1.0f, RoundingMode.HALF_UP));
assertEquals(0, Math.roundUsing(-0.2f, RoundingMode.HALF_UP));
assertEquals(-1, Math.roundUsing(-0.5f, RoundingMode.HALF_UP));
assertEquals(-1, Math.roundUsing(-0.9f, RoundingMode.HALF_UP));
assertEquals(-1, Math.roundUsing(-1.0f, RoundingMode.HALF_UP));
// HALF_EVEN
assertEquals(0, Math.roundUsing(0.2f, RoundingMode.HALF_EVEN));
assertEquals(0, Math.roundUsing(0.5f, RoundingMode.HALF_EVEN));
assertEquals(1, Math.roundUsing(0.9f, RoundingMode.HALF_EVEN));
assertEquals(1, Math.roundUsing(1.0f, RoundingMode.HALF_EVEN));
assertEquals(0, Math.roundUsing(-0.2f, RoundingMode.HALF_EVEN));
assertEquals(0, Math.roundUsing(-0.5f, RoundingMode.HALF_EVEN));
assertEquals(-1, Math.roundUsing(-0.9f, RoundingMode.HALF_EVEN));
assertEquals(-1, Math.roundUsing(-1.0f, RoundingMode.HALF_EVEN));
}
}
