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// 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 iterationDuration,
Vector<RefPtr<Interpolation>>& result) const {
size_t existingSize = result.size();
size_t resultIndex = 0;
for (const auto& record : m_interpolations) {
if (fraction >= record.m_applyFrom && fraction < record.m_applyTo) {
RefPtr<Interpolation> interpolation = record.m_interpolation;
double recordLength = record.m_end - record.m_start;
double localFraction =
recordLength ? (fraction - record.m_start) / recordLength : 0.0;
if (record.m_easing)
localFraction = record.m_easing->evaluate(
localFraction, accuracyForDuration(iterationDuration));
interpolation->interpolate(0, localFraction);
if (resultIndex < existingSize)
result[resultIndex++] = interpolation;
else
result.push_back(interpolation);
}
}
if (resultIndex < existingSize)
result.shrink(resultIndex);
}
void InterpolationEffect::addInterpolationsFromKeyframes(
PropertyHandle property,
const Keyframe::PropertySpecificKeyframe& keyframeA,
const Keyframe::PropertySpecificKeyframe& keyframeB,
double applyFrom,
double applyTo) {
addInterpolation(keyframeA.createInterpolation(property, keyframeB),
&keyframeA.easing(), keyframeA.offset(), keyframeB.offset(),
applyFrom, applyTo);
}
} // namespace blink
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