public override Matrix[] GetBoneTransforms()
{
// Pick an arbitrary node to 'prime' the refinement loop
float lowerBoundPosition = ChildrenByPosition.Keys.Min();
float upperBoundPosition = ChildrenByPosition.Keys.Max();
foreach (float position in ChildrenByPosition.Keys)
{
if (position > lowerBoundPosition && position <= BlendPosition)
{
lowerBoundPosition = position;
}
if (position < upperBoundPosition && position >= BlendPosition)
{
upperBoundPosition = position;
}
}
Matrix[] lowerBoundTransforms = ChildrenByPosition[lowerBoundPosition].GetBoneTransforms();
if (lowerBoundPosition == upperBoundPosition)
{
return(lowerBoundTransforms);
}
Matrix[] upperBoundTransforms = ChildrenByPosition[upperBoundPosition].GetBoneTransforms();
float blendFactor = (BlendPosition - lowerBoundPosition) /
(upperBoundPosition - lowerBoundPosition);
return(SpaceUtils.LerpSkeletalPose(lowerBoundTransforms, upperBoundTransforms, blendFactor));
}
public Matrix[] GetSkinTransforms()
{
Matrix[] blendStartPose;
if (blendFromCancelledTransitionPose)
{
blendStartPose = cancelledPose;
}
else
{
blendStartPose = CurrentState.GetBoneTransforms();
}
if (ActiveTransition == null)
{
return(CreateSkinTransforms(blendStartPose));
}
else
{
Matrix[] nextStatePose = nextState.GetBoneTransforms();
float pctComplete = (float)(transitionTime.TotalSeconds / ActiveTransition.DurationInSeconds);
float blendFactor = ActiveTransition.UseSmoothStep ? MathHelper.SmoothStep(0.0f, 1.0f, pctComplete) : pctComplete;
Matrix[] blendedPose = SpaceUtils.LerpSkeletalPose(blendStartPose, nextStatePose, blendFactor);
// Store the blended pose in case we have to cancel the transition next frame.
if (!blendFromCancelledTransitionPose)
{
cancelledPose = blendedPose;
}
return(CreateSkinTransforms(blendedPose));
}
}
public override Matrix[] GetBoneTransforms()
{
Matrix[] child1Transforms = child1.GetBoneTransforms();
Matrix[] child2Transforms = child2.GetBoneTransforms();
return(SpaceUtils.LerpSkeletalPose(child1Transforms, child2Transforms, BlendFactor));
}