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(EffectModel* effect,
                                 const Timing& timing,
                                 bool paused,
                                 double inheritedTime) {
  return new InertEffect(effect, timing, paused, inheritedTime);
}

InertEffect::InertEffect(EffectModel* model,
                         const Timing& timing,
                         bool paused,
                         double inheritedTime)
    : AnimationEffectReadOnly(timing),
      m_model(model),
      m_paused(paused),
      m_inheritedTime(inheritedTime) {}

void InertEffect::sample(Vector<RefPtr<Interpolation>>& result) const {
  updateInheritedTime(m_inheritedTime, TimingUpdateOnDemand);
  if (!isInEffect()) {
    result.clear();
    return;
  }

  double iteration = currentIteration();
  DCHECK_GE(iteration, 0);
  m_model->sample(clampTo<int>(iteration, 0), progress(), iterationDuration(),
                  result);
}

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

DEFINE_TRACE(InertEffect) {
  visitor->trace(m_model);
  AnimationEffectReadOnly::trace(visitor);
}

}  // namespace blink