| /* |
| * Copyright (C) 2006 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; |
| |
| /** |
| * An interpolator defines the rate of change of an animation. This allows |
| * the basic animation effects (alpha, scale, translate, rotate) to be |
| * accelerated, decelerated, repeated, etc. |
| */ |
| public interface Interpolator { |
| |
| /** |
| * Maps a point on the timeline to a multiplier to be applied to the |
| * transformations of an animation. |
| * |
| * @param input A value between 0 and 1.0 indicating our current point |
| * in the animation where 0 represents the start and 1.0 represents |
| * the end |
| * @return The interpolation value. This value can be more than 1.0 for |
| * Interpolators which overshoot their targets, or less than 0 for |
| * Interpolators that undershoot their targets. |
| */ |
| float getInterpolation(float input); |
| |
| } |