1 /*
2  * Copyright (c) 2024 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 #include "speed.h"
16 
17 META_BEGIN_NAMESPACE()
18 
19 namespace AnimationModifiers {
20 
Build(const IMetadata::Ptr & data)21 bool SpeedImpl::Build(const IMetadata::Ptr& data)
22 {
23     SpeedFactor()->OnChanged()->AddHandler(META_ACCESS_EVENT(OnChanged));
24     return true;
25 }
26 
ProcessOnGetDuration(DurationData & duration) const27 bool SpeedImpl::ProcessOnGetDuration(DurationData& duration) const
28 {
29     auto speed = BASE_NS::Math::abs(META_ACCESS_PROPERTY_VALUE(SpeedFactor));
30     if (speed > 0.f) {
31         duration.duration = duration.duration / speed;
32     } else {
33         duration.duration = TimeSpan::Infinite();
34     }
35     return true;
36 }
ProcessOnStep(StepData & step) const37 bool SpeedImpl::ProcessOnStep(StepData& step) const
38 {
39     auto speed = BASE_NS::Math::abs(META_ACCESS_PROPERTY_VALUE(SpeedFactor));
40     if (speed < 0) {
41         step.progress = 1.f - step.progress;
42         step.reverse = !step.reverse;
43     }
44     return true;
45 }
46 
47 } // namespace AnimationModifiers
48 
49 META_END_NAMESPACE()
50