| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.view.animation.cts; |
| |
| import android.app.Activity; |
| import android.content.res.XmlResourceParser; |
| import android.test.ActivityInstrumentationTestCase2; |
| import android.util.AttributeSet; |
| import android.util.Xml; |
| import android.view.View; |
| import android.view.animation.AlphaAnimation; |
| import android.view.animation.Animation; |
| import android.view.animation.AnimationUtils; |
| import android.view.animation.CycleInterpolator; |
| import android.view.animation.Interpolator; |
| import android.view.animation.Transformation; |
| |
| import com.android.cts.view.R; |
| |
| |
| /** |
| * Test {@link CycleInterpolator}. |
| */ |
| public class CycleInterpolatorTest |
| extends ActivityInstrumentationTestCase2<AnimationTestCtsActivity> { |
| |
| private Activity mActivity; |
| |
| /** It is defined in R.anim.cycle_alpha */ |
| private static final long CYCLE_ALPHA_DURATION = 2000; |
| private static final float ALPHA_DELTA = 0.001f; |
| |
| public CycleInterpolatorTest() { |
| super("com.android.cts.view", AnimationTestCtsActivity.class); |
| } |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| mActivity = getActivity(); |
| } |
| |
| public void testConstructors() { |
| new CycleInterpolator(1.0f); |
| |
| XmlResourceParser parser = mActivity.getResources().getAnimation(R.anim.cycle_alpha); |
| AttributeSet attrs = Xml.asAttributeSet(parser); |
| new CycleInterpolator(mActivity, attrs); |
| } |
| |
| public void testCycyleInterpolator() { |
| final View animWindow = mActivity.findViewById(R.id.anim_window); |
| final Animation anim = AnimationUtils.loadAnimation(mActivity, R.anim.cycle_alpha); |
| assertEquals(CYCLE_ALPHA_DURATION, anim.getDuration()); |
| assertTrue(anim instanceof AlphaAnimation); |
| |
| // cycle only once. |
| Interpolator interpolator = new CycleInterpolator(1.0f); |
| anim.setInterpolator(interpolator); |
| assertFalse(anim.hasStarted()); |
| |
| AnimationTestUtils.assertRunAnimation(getInstrumentation(), animWindow, anim); |
| |
| Transformation transformation = new Transformation(); |
| long startTime = anim.getStartTime(); |
| anim.getTransformation(startTime, transformation); |
| final float alpha1 = transformation.getAlpha(); |
| assertEquals(0.0f, alpha1, ALPHA_DELTA); |
| |
| anim.getTransformation(startTime + 500, transformation); |
| final float alpha2 = transformation.getAlpha(); |
| assertEquals(1.0f, alpha2, ALPHA_DELTA); |
| |
| anim.getTransformation(startTime + 1000, transformation); |
| final float alpha3 = transformation.getAlpha(); |
| |
| anim.getTransformation(startTime + 1500, transformation); |
| final float alpha4 = transformation.getAlpha(); |
| assertEquals(-1.0f, alpha4, ALPHA_DELTA); |
| |
| anim.getTransformation(startTime + CYCLE_ALPHA_DURATION, transformation); |
| final float alpha5 = transformation.getAlpha(); |
| assertEquals(0.0f, alpha5, ALPHA_DELTA); |
| |
| // check cycle sinusoidal delta alpha |
| final float delta1 = alpha2 - alpha1; |
| final float delta2 = alpha3 - alpha2; |
| final float delta3 = alpha4 - alpha3; |
| final float delta4 = alpha5 - alpha4; |
| assertEquals(alpha1, alpha3, ALPHA_DELTA); |
| assertEquals(alpha3, alpha5, ALPHA_DELTA); |
| assertEquals(alpha2, -alpha4, ALPHA_DELTA); |
| assertEquals(delta1, -delta2, ALPHA_DELTA); |
| assertEquals(delta2, delta3, ALPHA_DELTA); |
| assertEquals(delta3, -delta4, ALPHA_DELTA); |
| |
| // cycle twice. |
| interpolator = new CycleInterpolator(2.0f); |
| anim.setInterpolator(interpolator); |
| |
| AnimationTestUtils.assertRunAnimation(getInstrumentation(), animWindow, anim); |
| |
| transformation = new Transformation(); |
| startTime = anim.getStartTime(); |
| anim.getTransformation(startTime, transformation); |
| final float alpha6 = transformation.getAlpha(); |
| assertEquals(0.0f, alpha1, ALPHA_DELTA); |
| |
| anim.getTransformation(startTime + 250, transformation); |
| final float alpha7 = transformation.getAlpha(); |
| assertEquals(1.0f, alpha7, ALPHA_DELTA); |
| |
| anim.getTransformation(startTime + 500, transformation); |
| final float alpha8 = transformation.getAlpha(); |
| |
| anim.getTransformation(startTime + 750, transformation); |
| final float alpha9 = transformation.getAlpha(); |
| assertEquals(-1.0f, alpha9, ALPHA_DELTA); |
| |
| anim.getTransformation(startTime + 1000, transformation); |
| final float alpha10 = transformation.getAlpha(); |
| |
| anim.getTransformation(startTime + 1250, transformation); |
| final float alpha11 = transformation.getAlpha(); |
| |
| anim.getTransformation(startTime + 1500, transformation); |
| final float alpha12 = transformation.getAlpha(); |
| |
| anim.getTransformation(startTime + 1750, transformation); |
| final float alpha13 = transformation.getAlpha(); |
| |
| anim.getTransformation(startTime + CYCLE_ALPHA_DURATION, transformation); |
| final float alpha14 = transformation.getAlpha(); |
| assertEquals(0.0f, alpha14, ALPHA_DELTA); |
| |
| // check cycle sinusoidal delta alpha |
| final float delta5 = alpha7 - alpha6; |
| final float delta6 = alpha8 - alpha7; |
| final float delta7 = alpha9 - alpha8; |
| final float delta8 = alpha10 - alpha9; |
| final float delta9 = alpha11 - alpha10; |
| final float delta10 = alpha12 - alpha11; |
| final float delta11 = alpha13 - alpha12; |
| final float delta12 = alpha14 - alpha13; |
| assertEquals(alpha6, alpha8, ALPHA_DELTA); |
| assertEquals(alpha8, alpha10, ALPHA_DELTA); |
| assertEquals(alpha10, alpha12, ALPHA_DELTA); |
| assertEquals(alpha12, alpha14, ALPHA_DELTA); |
| assertEquals(alpha7, -alpha9, ALPHA_DELTA); |
| assertEquals(alpha9, -alpha11, ALPHA_DELTA); |
| assertEquals(alpha11, -alpha13, ALPHA_DELTA); |
| assertEquals(delta6, -delta5, ALPHA_DELTA); |
| assertEquals(delta7, delta6, ALPHA_DELTA); |
| assertEquals(delta8, -delta7, ALPHA_DELTA); |
| assertEquals(delta9, delta8, ALPHA_DELTA); |
| assertEquals(delta10, -delta9, ALPHA_DELTA); |
| assertEquals(delta11, delta10, ALPHA_DELTA); |
| assertEquals(delta12, -delta11, ALPHA_DELTA); |
| |
| // check whether it cycle the same |
| assertEquals(alpha6, alpha1, ALPHA_DELTA); |
| assertEquals(alpha7, alpha2, ALPHA_DELTA); |
| assertEquals(alpha8, alpha3, ALPHA_DELTA); |
| assertEquals(alpha9, alpha4, ALPHA_DELTA); |
| assertEquals(alpha10, alpha5, ALPHA_DELTA); |
| assertEquals(alpha10, alpha1, ALPHA_DELTA); |
| assertEquals(alpha11, alpha2, ALPHA_DELTA); |
| assertEquals(alpha12, alpha3, ALPHA_DELTA); |
| assertEquals(alpha13, alpha4, ALPHA_DELTA); |
| assertEquals(alpha14, alpha5, ALPHA_DELTA); |
| assertEquals(delta5, delta1, ALPHA_DELTA); |
| assertEquals(delta6, delta2, ALPHA_DELTA); |
| assertEquals(delta7, delta3, ALPHA_DELTA); |
| assertEquals(delta8, delta4, ALPHA_DELTA); |
| assertEquals(delta9, delta1, ALPHA_DELTA); |
| assertEquals(delta10, delta2, ALPHA_DELTA); |
| assertEquals(delta11, delta3, ALPHA_DELTA); |
| assertEquals(delta12, delta4, ALPHA_DELTA); |
| } |
| |
| public void testGetInterpolation() { |
| CycleInterpolator cycleInterpolator = new CycleInterpolator(2.0f); |
| final float out1 = cycleInterpolator.getInterpolation(0.0f); |
| final float out2 = cycleInterpolator.getInterpolation(0.125f); |
| final float out3 = cycleInterpolator.getInterpolation(0.25f); |
| final float out4 = cycleInterpolator.getInterpolation(0.375f); |
| final float out5 = cycleInterpolator.getInterpolation(0.5f); |
| final float out6 = cycleInterpolator.getInterpolation(0.625f); |
| final float out7 = cycleInterpolator.getInterpolation(0.75f); |
| final float out8 = cycleInterpolator.getInterpolation(0.875f); |
| final float out9 = cycleInterpolator.getInterpolation(1.0f); |
| final float delta1 = out2 - out1; |
| final float delta2 = out3 - out2; |
| final float delta3 = out4 - out3; |
| final float delta4 = out5 - out4; |
| final float delta5 = out6 - out5; |
| final float delta6 = out7 - out6; |
| final float delta7 = out8 - out7; |
| final float delta8 = out9 - out8; |
| assertEquals(out1, out3, ALPHA_DELTA); |
| assertEquals(out3, out5, ALPHA_DELTA); |
| assertEquals(out5, out7, ALPHA_DELTA); |
| assertEquals(out7, out9, ALPHA_DELTA); |
| assertEquals(delta1, -delta2, ALPHA_DELTA); |
| assertEquals(delta2, delta3, ALPHA_DELTA); |
| assertEquals(delta3, -delta4, ALPHA_DELTA); |
| assertEquals(delta4, delta5, ALPHA_DELTA); |
| assertEquals(delta5, -delta6, ALPHA_DELTA); |
| assertEquals(delta6, delta7, ALPHA_DELTA); |
| assertEquals(delta7, -delta8, ALPHA_DELTA); |
| |
| final float timeDelta = 0.015f; |
| assertEquals(cycleInterpolator.getInterpolation(0.0f + timeDelta), |
| cycleInterpolator.getInterpolation(0.5f + timeDelta), ALPHA_DELTA); |
| assertEquals(cycleInterpolator.getInterpolation(0.25f + timeDelta), |
| cycleInterpolator.getInterpolation(0.75f + timeDelta), ALPHA_DELTA); |
| } |
| } |