src/animation/interpolating_keyframe.cpp

#include "rive/animation/interpolating_keyframe.hpp"
#include "rive/animation/keyframe_interpolator.hpp"
#include "rive/animation/linear_animation_instance.hpp"
#include "rive/core_context.hpp"
#include "rive/scripted/scripted_interpolator.hpp"

using namespace rive;

StatusCode InterpolatingKeyFrame::onAddedDirty(CoreContext* context)
{
  if (interpolatorId() != -1)
  {
    auto coreObject = context->resolve(interpolatorId());
    if (coreObject == nullptr || !coreObject->is<KeyFrameInterpolator>())
    {
      return StatusCode::MissingObject;
    }
    m_interpolator = coreObject->as<KeyFrameInterpolator>();
  }

  return StatusCode::Ok;
}

KeyFrameInterpolator* InterpolatingKeyFrame::effectiveInterpolator(
    const LinearAnimationInstance* context) const
{
  KeyFrameInterpolator* shared = m_interpolator;
  if (shared == nullptr || context == nullptr ||
      !shared->is<ScriptedInterpolator>())
  {
    return shared;
  }
  auto* sharedSI = static_cast<const ScriptedInterpolator*>(shared);
  if (auto* stateful = context->statefulInterpolator(this, sharedSI))
  {
    return stateful;
  }
  return shared;
}