1 #ifndef DALI_INTERNAL_KEY_FRAME_CHANNEL_H
2 #define DALI_INTERNAL_KEY_FRAME_CHANNEL_H
5 * Copyright (c) 2019 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
25 #include <dali/internal/event/animation/progress-value.h>
26 #include <dali/public-api/animation/animation.h>
27 #include <dali/public-api/common/vector-wrapper.h>
34 struct KeyFrameChannel
36 using ProgressValues = std::vector<ProgressValue<V>>;
38 bool IsActive(float progress) const
40 if(!mValues.empty() && (progress >= mValues[0].GetProgress()))
47 V GetValue(float progress, Dali::Animation::Interpolation interpolation) const
51 if(progress >= mValues.back().GetProgress())
53 interpolatedV = mValues.back().GetValue();
57 auto end = std::find_if(mValues.begin(), mValues.end(), [=](const auto& element) { return element.GetProgress() > progress; });
60 const bool validInterval = (end != mValues.end()) && (start->GetProgress() <= progress);
64 float frameProgress = (progress - start->GetProgress()) / (end->GetProgress() - start->GetProgress());
65 if(interpolation == Dali::Animation::LINEAR)
67 Interpolate(interpolatedV, start->GetValue(), end->GetValue(), frameProgress);
71 //Calculate prev and next values
73 if(start != mValues.begin())
75 prev = (start - 1)->GetValue();
79 //Project next value through start point
80 prev = start->GetValue() + (start->GetValue() - (start + 1)->GetValue());
84 if(end != mValues.end() - 1)
86 next = (end + 1)->GetValue();
90 //Project prev value through end point
91 next = end->GetValue() + (end->GetValue() - (end - 1)->GetValue());
94 CubicInterpolate(interpolatedV, prev, start->GetValue(), end->GetValue(), next, frameProgress);
101 ProgressValues mValues;
107 #endif // DALI_INTERNAL_KEY_FRAME_CHANNEL_H