third_party/WebKit/Source/core/animation/InertEffect.cpp

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#include "core/animation/InertEffect.h"

#include "core/animation/Interpolation.h"

namespace blink {

InertEffect* InertEffect::Create(KeyframeEffectModelBase* effect,
                                 const Timing& timing,
                                 bool paused,
                                 double inherited_time) {
  return new InertEffect(effect, timing, paused, inherited_time);
}

InertEffect::InertEffect(KeyframeEffectModelBase* model,
                         const Timing& timing,
                         bool paused,
                         double inherited_time)
    : AnimationEffectReadOnly(timing),
      model_(model),
      paused_(paused),
      inherited_time_(inherited_time) {}

void InertEffect::Sample(Vector<scoped_refptr<Interpolation>>& result) const {
  UpdateInheritedTime(inherited_time_, kTimingUpdateOnDemand);
  if (!IsInEffect()) {
    result.clear();
    return;
  }

  double iteration = CurrentIteration();
  DCHECK_GE(iteration, 0);
  model_->Sample(clampTo<int>(iteration, 0), Progress(), IterationDuration(),
                 result);
}

double InertEffect::CalculateTimeToEffectChange(bool, double, double) const {
  return std::numeric_limits<double>::infinity();
}

void InertEffect::Trace(blink::Visitor* visitor) {
  visitor->Trace(model_);
  AnimationEffectReadOnly::Trace(visitor);
}

}  // namespace blink