/* * Copyright (c) 2011, 2013, 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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. */ package test.javafx.animation; import com.sun.javafx.animation.TickCalculation; import com.sun.scenario.animation.shared.InterpolationInterval; import javafx.animation.Interpolatable; import javafx.animation.Interpolator; import javafx.animation.KeyValue; import javafx.beans.property.Property; import javafx.beans.property.SimpleLongProperty; import javafx.util.Duration; import static org.junit.Assert.assertEquals; import org.junit.Test; public class InterpolatorTest { private static final double EPSILON = 1e-12; private static final float EPSILON_FLOAT = 1e-6f; private static final DummyInterpolatable START = new DummyInterpolatable(0); private static final DummyInterpolatable END = new DummyInterpolatable(10); @Test public void testInterpolateWithObjects() { final DummyInterpolatable i1 = new DummyInterpolatable(1); final DummyInterpolatable i2 = new DummyInterpolatable(4); final Object o = new Object(); assertEquals(Double.valueOf(2.5), (Double)Interpolator.LINEAR.interpolate(Double.valueOf(1), Integer.valueOf(4), 0.5), EPSILON); assertEquals(Double.valueOf(2.5), (Double)Interpolator.LINEAR.interpolate(Integer.valueOf(4), Double.valueOf(1), 0.5), EPSILON); assertEquals(Float.valueOf(2.5f), (Float)Interpolator.LINEAR.interpolate(Float.valueOf(1), Integer.valueOf(4), 0.5), EPSILON_FLOAT); assertEquals(Float.valueOf(2.5f), (Float)Interpolator.LINEAR.interpolate(Integer.valueOf(4), Float.valueOf(1), 0.5), EPSILON_FLOAT); assertEquals(Long.valueOf(3L), Interpolator.LINEAR.interpolate(Long.valueOf(1), Integer.valueOf(4), 0.5)); assertEquals(Long.valueOf(3L), Interpolator.LINEAR.interpolate(Integer.valueOf(4), Long.valueOf(1), 0.5)); assertEquals(Integer.valueOf(3), Interpolator.LINEAR.interpolate(Integer.valueOf(1), Integer.valueOf(4), 0.5)); assertEquals(2.5, ((DummyInterpolatable)Interpolator.LINEAR.interpolate(i1, i2, 0.5)).value, EPSILON); assertEquals(o, Interpolator.LINEAR.interpolate(o, Integer.MIN_VALUE, 1.0-2*EPSILON)); assertEquals(Integer.MIN_VALUE, Interpolator.LINEAR.interpolate(o, Integer.MIN_VALUE, 1.0)); assertEquals(Integer.MIN_VALUE, Interpolator.LINEAR.interpolate(Integer.MIN_VALUE, o, 1.0-2*EPSILON)); assertEquals(o, Interpolator.LINEAR.interpolate(Integer.MIN_VALUE, o, 1.0)); assertEquals(i1, Interpolator.LINEAR.interpolate(i1, o, 1.0-2*EPSILON)); assertEquals(o, Interpolator.LINEAR.interpolate(i1, o, 1.0)); } @Test public void testDISCRETE() { assertEquals(false, Interpolator.DISCRETE.interpolate(false, true, 1.0-2*EPSILON)); assertEquals(true, Interpolator.DISCRETE.interpolate(false, true, 1.0)); assertEquals(1.0, Interpolator.DISCRETE.interpolate(1.0, 2.0, 1.0-2*EPSILON), EPSILON); assertEquals(2.0, Interpolator.DISCRETE.interpolate(1.0, 2.0, 1.0), EPSILON); assertEquals(-3, Interpolator.DISCRETE.interpolate(-3, 7, 1.0-2*EPSILON)); assertEquals( 7, Interpolator.DISCRETE.interpolate(-3, 7, 1.0)); assertEquals( 12L, Interpolator.DISCRETE.interpolate(12L, -201L, 1.0-2*EPSILON)); assertEquals(-201L, Interpolator.DISCRETE.interpolate(12L, -201L, 1.0)); assertEquals( 0, ((DummyInterpolatable)Interpolator.DISCRETE.interpolate(START, END, 1.0-2*EPSILON)).value, EPSILON); assertEquals(10, ((DummyInterpolatable)Interpolator.DISCRETE.interpolate(START, END, 1.0)).value, EPSILON); } @Test public void testLINEAR() { assertEquals(false, Interpolator.LINEAR.interpolate(false, true, 0.0)); assertEquals(false, Interpolator.LINEAR.interpolate(false, true, 0.1)); assertEquals(false, Interpolator.LINEAR.interpolate(false, true, 0.5)); assertEquals(false, Interpolator.LINEAR.interpolate(false, true, 0.9)); assertEquals(true, Interpolator.LINEAR.interpolate(false, true, 1.0)); assertEquals(1.0, Interpolator.LINEAR.interpolate(1.0, 2.0, 0.0), EPSILON); assertEquals(1.1, Interpolator.LINEAR.interpolate(1.0, 2.0, 0.1), EPSILON); assertEquals(1.5, Interpolator.LINEAR.interpolate(1.0, 2.0, 0.5), EPSILON); assertEquals(1.9, Interpolator.LINEAR.interpolate(1.0, 2.0, 0.9), EPSILON); assertEquals(2.0, Interpolator.LINEAR.interpolate(1.0, 2.0, 1.0), EPSILON); assertEquals(-3, Interpolator.LINEAR.interpolate(-3, 7, 0.0)); assertEquals(-2, Interpolator.LINEAR.interpolate(-3, 7, 0.1)); assertEquals( 2, Interpolator.LINEAR.interpolate(-3, 7, 0.5)); assertEquals( 6, Interpolator.LINEAR.interpolate(-3, 7, 0.9)); assertEquals( 7, Interpolator.LINEAR.interpolate(-3, 7, 1.0)); assertEquals(-3L, Interpolator.LINEAR.interpolate(-3L, 7L, 0.0)); assertEquals(-2L, Interpolator.LINEAR.interpolate(-3L, 7L, 0.1)); assertEquals( 2L, Interpolator.LINEAR.interpolate(-3L, 7L, 0.5)); assertEquals( 6L, Interpolator.LINEAR.interpolate(-3L, 7L, 0.9)); assertEquals( 7L, Interpolator.LINEAR.interpolate(-3L, 7L, 1.0)); assertEquals( 0, ((DummyInterpolatable)Interpolator.LINEAR.interpolate(START, END, 0.0)).value, EPSILON); assertEquals( 1, ((DummyInterpolatable)Interpolator.LINEAR.interpolate(START, END, 0.1)).value, EPSILON); assertEquals( 5, ((DummyInterpolatable)Interpolator.LINEAR.interpolate(START, END, 0.5)).value, EPSILON); assertEquals( 9, ((DummyInterpolatable)Interpolator.LINEAR.interpolate(START, END, 0.9)).value, EPSILON); assertEquals(10, ((DummyInterpolatable)Interpolator.LINEAR.interpolate(START, END, 1.0)).value, EPSILON); } @Test public void testEASE_BOTH() { // Expected results calculated with JavaFX SDK 1.3 assertEquals(false, Interpolator.EASE_BOTH.interpolate(false, true, 0.0)); assertEquals(false, Interpolator.EASE_BOTH.interpolate(false, true, 0.1)); assertEquals(false, Interpolator.EASE_BOTH.interpolate(false, true, 0.5)); assertEquals(false, Interpolator.EASE_BOTH.interpolate(false, true, 0.9)); assertEquals(true, Interpolator.EASE_BOTH.interpolate(false, true, 1.0)); assertEquals(1.0, Interpolator.EASE_BOTH.interpolate(1.0, 2.0, 0.0), EPSILON); assertEquals(1.125, Interpolator.EASE_BOTH.interpolate(1.0, 2.0, 0.2), EPSILON); assertEquals(1.5, Interpolator.EASE_BOTH.interpolate(1.0, 2.0, 0.5), EPSILON); assertEquals(1.875, Interpolator.EASE_BOTH.interpolate(1.0, 2.0, 0.8), EPSILON); assertEquals(2.0, Interpolator.EASE_BOTH.interpolate(1.0, 2.0, 1.0), EPSILON); assertEquals(-3, Interpolator.EASE_BOTH.interpolate(-3, 7, 0.0)); assertEquals(-2, Interpolator.EASE_BOTH.interpolate(-3, 7, 0.2)); assertEquals( 2, Interpolator.EASE_BOTH.interpolate(-3, 7, 0.5)); assertEquals( 6, Interpolator.EASE_BOTH.interpolate(-3, 7, 0.8)); assertEquals( 7, Interpolator.EASE_BOTH.interpolate(-3, 7, 1.0)); assertEquals(-3L, Interpolator.EASE_BOTH.interpolate(-3L, 7L, 0.0)); assertEquals(-2L, Interpolator.EASE_BOTH.interpolate(-3L, 7L, 0.2)); assertEquals( 2L, Interpolator.EASE_BOTH.interpolate(-3L, 7L, 0.5)); assertEquals( 6L, Interpolator.EASE_BOTH.interpolate(-3L, 7L, 0.8)); assertEquals( 7L, Interpolator.EASE_BOTH.interpolate(-3L, 7L, 1.0)); assertEquals( 0, ((DummyInterpolatable)Interpolator.EASE_BOTH.interpolate(START, END, 0.0)).value, EPSILON); assertEquals( 1.25, ((DummyInterpolatable)Interpolator.EASE_BOTH.interpolate(START, END, 0.2)).value, EPSILON); assertEquals( 5, ((DummyInterpolatable)Interpolator.EASE_BOTH.interpolate(START, END, 0.5)).value, EPSILON); assertEquals( 8.75, ((DummyInterpolatable)Interpolator.EASE_BOTH.interpolate(START, END, 0.8)).value, EPSILON); assertEquals(10, ((DummyInterpolatable)Interpolator.EASE_BOTH.interpolate(START, END, 1.0)).value, EPSILON); } @Test public void testEASE_IN() { // Expected results calculated with JavaFX SDK 1.3 assertEquals(false, Interpolator.EASE_IN.interpolate(false, true, 0.0)); assertEquals(false, Interpolator.EASE_IN.interpolate(false, true, 0.1)); assertEquals(false, Interpolator.EASE_IN.interpolate(false, true, 0.5)); assertEquals(false, Interpolator.EASE_IN.interpolate(false, true, 0.9)); assertEquals(true, Interpolator.EASE_IN.interpolate(false, true, 1.0)); assertEquals(1.0, Interpolator.EASE_IN.interpolate(1.0, 2.0, 0.0), EPSILON); assertEquals(1.1111111111111112, Interpolator.EASE_IN.interpolate(1.0, 2.0, 0.2), EPSILON); assertEquals(1.4444444444444444, Interpolator.EASE_IN.interpolate(1.0, 2.0, 0.5), EPSILON); assertEquals(1.777777777777778, Interpolator.EASE_IN.interpolate(1.0, 2.0, 0.8), EPSILON); assertEquals(2.0, Interpolator.EASE_IN.interpolate(1.0, 2.0, 1.0), EPSILON); assertEquals(-3, Interpolator.EASE_IN.interpolate(-3, 7, 0.0)); assertEquals(-2, Interpolator.EASE_IN.interpolate(-3, 7, 0.2)); assertEquals( 1, Interpolator.EASE_IN.interpolate(-3, 7, 0.5)); assertEquals( 5, Interpolator.EASE_IN.interpolate(-3, 7, 0.8)); assertEquals( 7, Interpolator.EASE_IN.interpolate(-3, 7, 1.0)); assertEquals(-3L, Interpolator.EASE_IN.interpolate(-3L, 7L, 0.0)); assertEquals(-2L, Interpolator.EASE_IN.interpolate(-3L, 7L, 0.2)); assertEquals( 1L, Interpolator.EASE_IN.interpolate(-3L, 7L, 0.5)); assertEquals( 5L, Interpolator.EASE_IN.interpolate(-3L, 7L, 0.8)); assertEquals( 7L, Interpolator.EASE_IN.interpolate(-3L, 7L, 1.0)); assertEquals( 0, ((DummyInterpolatable)Interpolator.EASE_IN.interpolate(START, END, 0.0)).value, EPSILON); assertEquals( 1.1111111111111114, ((DummyInterpolatable)Interpolator.EASE_IN.interpolate(START, END, 0.2)).value, EPSILON); assertEquals( 4.444444444444445, ((DummyInterpolatable)Interpolator.EASE_IN.interpolate(START, END, 0.5)).value, EPSILON); assertEquals( 7.777777777777779, ((DummyInterpolatable)Interpolator.EASE_IN.interpolate(START, END, 0.8)).value, EPSILON); assertEquals(10, ((DummyInterpolatable)Interpolator.EASE_IN.interpolate(START, END, 1.0)).value, EPSILON); } @Test public void testEASE_OUT() { // Expected results calculated with JavaFX SDK 1.3 assertEquals(false, Interpolator.EASE_OUT.interpolate(false, true, 0.0)); assertEquals(false, Interpolator.EASE_OUT.interpolate(false, true, 0.1)); assertEquals(false, Interpolator.EASE_OUT.interpolate(false, true, 0.5)); assertEquals(false, Interpolator.EASE_OUT.interpolate(false, true, 0.9)); assertEquals(true, Interpolator.EASE_OUT.interpolate(false, true, 1.0)); assertEquals(1.0, Interpolator.EASE_OUT.interpolate(1.0, 2.0, 0.0), EPSILON); assertEquals(1.2222222222222223, Interpolator.EASE_OUT.interpolate(1.0, 2.0, 0.2), EPSILON); assertEquals(1.5555555555555556, Interpolator.EASE_OUT.interpolate(1.0, 2.0, 0.5), EPSILON); assertEquals(1.8888888888888888, Interpolator.EASE_OUT.interpolate(1.0, 2.0, 0.8), EPSILON); assertEquals(2.0, Interpolator.EASE_OUT.interpolate(1.0, 2.0, 1.0), EPSILON); assertEquals(-3, Interpolator.EASE_OUT.interpolate(-3, 7, 0.0)); assertEquals(-1, Interpolator.EASE_OUT.interpolate(-3, 7, 0.2)); assertEquals( 3, Interpolator.EASE_OUT.interpolate(-3, 7, 0.5)); assertEquals( 6, Interpolator.EASE_OUT.interpolate(-3, 7, 0.8)); assertEquals( 7, Interpolator.EASE_OUT.interpolate(-3, 7, 1.0)); assertEquals(-3L, Interpolator.EASE_OUT.interpolate(-3L, 7L, 0.0)); assertEquals(-1L, Interpolator.EASE_OUT.interpolate(-3L, 7L, 0.2)); assertEquals( 3L, Interpolator.EASE_OUT.interpolate(-3L, 7L, 0.5)); assertEquals( 6L, Interpolator.EASE_OUT.interpolate(-3L, 7L, 0.8)); assertEquals( 7L, Interpolator.EASE_OUT.interpolate(-3L, 7L, 1.0)); assertEquals( 0, ((DummyInterpolatable)Interpolator.EASE_OUT.interpolate(START, END, 0.0)).value, EPSILON); assertEquals( 2.2222222222222223, ((DummyInterpolatable)Interpolator.EASE_OUT.interpolate(START, END, 0.2)).value, EPSILON); assertEquals( 5.555555555555555, ((DummyInterpolatable)Interpolator.EASE_OUT.interpolate(START, END, 0.5)).value, EPSILON); assertEquals( 8.88888888888889, ((DummyInterpolatable)Interpolator.EASE_OUT.interpolate(START, END, 0.8)).value, EPSILON); assertEquals(10, ((DummyInterpolatable)Interpolator.EASE_OUT.interpolate(START, END, 1.0)).value, EPSILON); } @Test public void testSPLINE_Concave() { Interpolator i = Interpolator.SPLINE(0.0, 0.5, 0.5, 1.0); assertEquals(1.0, i.interpolate(1.0, 2.0, 0.0), EPSILON); assertEquals(1.5573742287206063, i.interpolate(1.0, 2.0, 0.2), EPSILON); assertEquals(1.8400223953585164, i.interpolate(1.0, 2.0, 0.5), EPSILON); assertEquals(1.9742173260814238, i.interpolate(1.0, 2.0, 0.8), EPSILON); assertEquals(2.0, i.interpolate(1.0, 2.0, 1.0), EPSILON); } @Test public void testSPLINE_Convex() { Interpolator i = Interpolator.SPLINE(0.5, 0.0, 1.0, 0.5); assertEquals(1.0, i.interpolate(1.0, 2.0, 0.0), EPSILON); assertEquals(1.0257826739185762, i.interpolate(1.0, 2.0, 0.2), EPSILON); assertEquals(1.1599776046414838, i.interpolate(1.0, 2.0, 0.5), EPSILON); assertEquals(1.4426257712793937, i.interpolate(1.0, 2.0, 0.8), EPSILON); assertEquals(2.0, i.interpolate(1.0, 2.0, 1.0), EPSILON); } @Test public void testSPLINE_WithInflectionPoint() { Interpolator i = Interpolator.SPLINE(0.0, 1.0, 1.0, 0.0); assertEquals(1.0, i.interpolate(1.0, 2.0, 0.0), EPSILON); assertEquals(1.4614221762502215, i.interpolate(1.0, 2.0, 0.2), EPSILON); assertEquals(1.5, i.interpolate(1.0, 2.0, 0.5), EPSILON); assertEquals(1.5385778237497787, i.interpolate(1.0, 2.0, 0.8), EPSILON); assertEquals(2.0, i.interpolate(1.0, 2.0, 1.0), EPSILON); } @Test public void testSPLINE_Linear() { Interpolator i = Interpolator.SPLINE(1/3, 1/3, 2/3, 2/3); assertEquals(1.0, i.interpolate(1.0, 2.0, 0.0), EPSILON); assertEquals(1.2, i.interpolate(1.0, 2.0, 0.2), EPSILON); assertEquals(1.5, i.interpolate(1.0, 2.0, 0.5), EPSILON); assertEquals(1.8, i.interpolate(1.0, 2.0, 0.8), EPSILON); assertEquals(2.0, i.interpolate(1.0, 2.0, 1.0), EPSILON); } @Test public void testTANGENT_Linear() { SimpleLongProperty property = new SimpleLongProperty(); Interpolator i0 = Interpolator.TANGENT(Duration.seconds(1), 20); Interpolator i1 = Interpolator.TANGENT(Duration.seconds(1), 40); InterpolationInterval interval = InterpolationInterval.create(new KeyValue(property, 60L, i1), TickCalculation.fromDuration(Duration.seconds(3)), new KeyValue(property, 0L, i0), TickCalculation.fromDuration(Duration.seconds(3))); interval.interpolate(1.0/3.0); assertEquals(20L, (long)property.getValue()); interval.interpolate(1.0/2.0); assertEquals(30L, (long)property.getValue()); interval.interpolate(2.0/3.0); assertEquals(40L, (long)property.getValue()); } private static class DummyInterpolatable implements Interpolatable { final double value; private DummyInterpolatable(double value) { this.value = value; } @Override public DummyInterpolatable interpolate(DummyInterpolatable endVal, double t) { if (Math.abs(t) < EPSILON) { return this; } else if (Math.abs(t-1.0) < EPSILON) { return endVal; } else { return new DummyInterpolatable(value + t * (endVal.value - value)); } } } }