| /* |
| * Copyright (C) 2010 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 com.android.gallery3d.anim; |
| |
| import android.test.suitebuilder.annotation.SmallTest; |
| import android.util.Log; |
| import android.view.animation.Interpolator; |
| |
| import junit.framework.TestCase; |
| |
| @SmallTest |
| public class AnimationTest extends TestCase { |
| private static final String TAG = "AnimationTest"; |
| |
| public void testFloatAnimation() { |
| FloatAnimation a = new FloatAnimation(0f, 1f, 10); // value 0 to 1.0, duration 10 |
| a.start(); // start animation |
| assertTrue(a.isActive()); // should be active now |
| a.calculate(0); // set start time = 0 |
| assertTrue(a.get() == 0); // start value should be 0 |
| a.calculate(1); // calculate value for time 1 |
| assertFloatEq(a.get(), 0.1f); |
| a.calculate(5); // calculate value for time 5 |
| assertTrue(a.get() == 0.5);// |
| a.calculate(9); // calculate value for time 9 |
| assertFloatEq(a.get(), 0.9f); |
| a.calculate(10); // calculate value for time 10 |
| assertTrue(!a.isActive()); // should be inactive now |
| assertTrue(a.get() == 1.0);// |
| a.start(); // restart |
| assertTrue(a.isActive()); // should be active now |
| a.calculate(5); // set start time = 5 |
| assertTrue(a.get() == 0); // start value should be 0 |
| a.calculate(5+9); // calculate for time 5+9 |
| assertFloatEq(a.get(), 0.9f); |
| } |
| |
| private static class MyInterpolator implements Interpolator { |
| public float getInterpolation(float input) { |
| return 4f * (input - 0.5f); // maps [0,1] to [-2,2] |
| } |
| } |
| |
| public void testInterpolator() { |
| FloatAnimation a = new FloatAnimation(0f, 1f, 10); // value 0 to 1.0, duration 10 |
| a.setInterpolator(new MyInterpolator()); |
| a.start(); // start animation |
| a.calculate(0); // set start time = 0 |
| assertTrue(a.get() == -2); // start value should be -2 |
| a.calculate(1); // calculate value for time 1 |
| assertFloatEq(a.get(), -1.6f); |
| a.calculate(5); // calculate value for time 5 |
| assertTrue(a.get() == 0); // |
| a.calculate(9); // calculate value for time 9 |
| assertFloatEq(a.get(), 1.6f); |
| a.calculate(10); // calculate value for time 10 |
| assertTrue(a.get() == 2); // |
| } |
| |
| public static void assertFloatEq(float expected, float actual) { |
| if (Math.abs(actual - expected) > 1e-6) { |
| Log.v(TAG, "expected: " + expected + ", actual: " + actual); |
| fail(); |
| } |
| } |
| } |