update method

void update(double deltaSeconds)

Advances all registered clips by deltaSeconds and applies their blended result to the bound nodes.

Resets each animated node to its bind pose, advances every clip by the delta, normalizes weights when their sum exceeds 1, and then writes the resulting (translation, rotation, scale) decomposition back to Node.localTransform.

Implementation

void update(double deltaSeconds) {
  // Reset the animated pose state.
  for (final transforms in _targetTransforms.values) {
    transforms.animatedPose = transforms.bindPose.clone();
  }

  // Compute a weight multiplier for normalizing the animation.
  double totalWeight = 0.0;
  for (final clip in _clips.values) {
    totalWeight += clip.weight;
  }
  double weightMultiplier = totalWeight > 1.0 ? 1.0 / totalWeight : 1.0;

  // Update and apply all clips to the animation pose state.
  for (final clip in _clips.values) {
    clip.advance(deltaSeconds);
    clip.applyToBindings(_targetTransforms, weightMultiplier);
  }

  // Apply the animated pose to the bound joints.
  for (final entry in _targetTransforms.entries) {
    final node = entry.key;
    final transforms = entry.value;
    node.localTransform = transforms.animatedPose.toMatrix4();
  }
}