1 /*
2  * Copyright (C) 2006 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.view.animation;
18 
19 import android.animation.TimeInterpolator;
20 
21 /**
22  * An interpolator defines the rate of change of an animation. This allows
23  * the basic animation effects (alpha, scale, translate, rotate) to be
24  * accelerated, decelerated, repeated, etc.
25  */
26 public interface Interpolator extends TimeInterpolator {
27     // A new interface, TimeInterpolator, was introduced for the new android.animation
28     // package. This older Interpolator interface extends TimeInterpolator so that users of
29     // the new Animator-based animations can use either the old Interpolator implementations or
30     // new classes that implement TimeInterpolator directly.
31 }
32