| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "core/animation/InterpolationEffect.h" |
| |
| #include "platform/animation/AnimationUtilities.h" |
| |
| namespace blink { |
| |
| void InterpolationEffect::GetActiveInterpolations( |
| double fraction, |
| double iteration_duration, |
| Vector<scoped_refptr<Interpolation>>& result) const { |
| size_t existing_size = result.size(); |
| size_t result_index = 0; |
| |
| for (const auto& record : interpolations_) { |
| if (fraction >= record.apply_from_ && fraction < record.apply_to_) { |
| scoped_refptr<Interpolation> interpolation = record.interpolation_; |
| double record_length = record.end_ - record.start_; |
| double local_fraction = |
| record_length ? (fraction - record.start_) / record_length : 0.0; |
| if (record.easing_) |
| local_fraction = record.easing_->Evaluate( |
| local_fraction, AccuracyForDuration(iteration_duration)); |
| interpolation->Interpolate(0, local_fraction); |
| if (result_index < existing_size) |
| result[result_index++] = interpolation; |
| else |
| result.push_back(interpolation); |
| } |
| } |
| if (result_index < existing_size) |
| result.Shrink(result_index); |
| } |
| |
| void InterpolationEffect::AddInterpolationsFromKeyframes( |
| const PropertyHandle& property, |
| const Keyframe::PropertySpecificKeyframe& keyframe_a, |
| const Keyframe::PropertySpecificKeyframe& keyframe_b, |
| double apply_from, |
| double apply_to) { |
| AddInterpolation(keyframe_a.CreateInterpolation(property, keyframe_b), |
| &keyframe_a.Easing(), keyframe_a.Offset(), |
| keyframe_b.Offset(), apply_from, apply_to); |
| } |
| |
| } // namespace blink |
