1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include "core/animation/anticipate_curve.h"
17 
18 namespace OHOS::Ace {
19 
AnticipateCurve(const float tension)20 AnticipateCurve::AnticipateCurve(const float tension) : tension_(tension)
21 {}
22 
MoveInternal(float time)23 float AnticipateCurve::MoveInternal(float time)
24 {
25     // a(t) = t * t * ((tension + 1) * t - tension)
26     return time * time * ((tension_ + 1.0f) * time - tension_);
27 }
28 
29 } // namespace OHOS::Ace