| John Reck | e45b1fd | 2014-04-15 09:50:16 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2014 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 | #include "Interpolator.h" |
| 17 | |
| 18 | #include <math.h> |
| 19 | |
| 20 | namespace android { |
| 21 | namespace uirenderer { |
| 22 | |
| 23 | Interpolator* Interpolator::createDefaultInterpolator() { |
| 24 | return new AccelerateDecelerateInterpolator(); |
| 25 | } |
| 26 | |
| 27 | float AccelerateDecelerateInterpolator::interpolate(float input) { |
| 28 | return (float)(cosf((input + 1) * M_PI) / 2.0f) + 0.5f; |
| 29 | } |
| 30 | |
| 31 | } /* namespace uirenderer */ |
| 32 | } /* namespace android */ |