} // Update
#region Interpolate Animation
/// <summary>
/// Retrieves and interpolates two pose.
/// </summary>
private static ModelAnimationPlayer.BoneTransformationData InterpolatePose(ModelAnimationPlayer.BoneTransformationData transformationData1,
ModelAnimationPlayer.BoneTransformationData transformationData2,
float amount)
{
Vector3 translation = Vector3.SmoothStep(transformationData1.position, transformationData2.position, amount);
Quaternion rotation = Quaternion.Slerp(transformationData1.rotation, transformationData2.rotation, amount);
float scale = transformationData1.scale * (1 - amount) + transformationData2.scale * amount;
return(new ModelAnimationPlayer.BoneTransformationData {
position = translation, rotation = rotation, scale = scale
});
} // InterpolatePose
} // Stop
#endregion
#region Update
/// <summary>
/// Update.
/// </summary>
internal void Update()
{
if (!(cachedModel is FileModel))
{
return;
}
if (activeAnimations.Count == 0)
{
return;
}
// Update cross fade elapsed time.
for (int i = 0; i < activeAnimations.Count; i++)
{
if (activeAnimations[i].FadeLenght != 0)
{
activeAnimations[i].ElapsedTime += Time.GameDeltaTime;
}
}
bool stopAnimations = false;
for (int i = activeAnimations.Count - 1; i >= 0; i--)
{
if (stopAnimations)
{
activeAnimations[i].ModelAnimationPlayer.Stop();
}
else
// If cross fade is completed the rest of the animations are removed.
if (activeAnimations[activeAnimations.Count - 1].ElapsedTime > activeAnimations[activeAnimations.Count - 1].FadeLenght)
{
stopAnimations = true;
}
}
FileModel fileModel = (FileModel)cachedModel;
if (activeAnimations.Count >= 2)
{
// Update bone transform
for (int bone = 0; bone < fileModel.BoneCount; bone++)
{
float amout = activeAnimations[activeAnimations.Count - 1].ElapsedTime / activeAnimations[activeAnimations.Count - 1].FadeLenght;
ModelAnimationPlayer.BoneTransformationData blendedPose = InterpolatePose(activeAnimations[activeAnimations.Count - 2].ModelAnimationPlayer.BoneTransforms[bone],
activeAnimations[activeAnimations.Count - 1].ModelAnimationPlayer.BoneTransforms[bone],
amout);
localBoneTransform[bone] = Matrix.CreateScale(blendedPose.scale) *
Matrix.CreateFromQuaternion(blendedPose.rotation) *
Matrix.CreateTranslation(blendedPose.position);
}
}
else
{
// Update bone transform
for (int bone = 0; bone < fileModel.BoneCount; bone++)
{
localBoneTransform[bone] = Matrix.CreateScale(activeAnimations[0].ModelAnimationPlayer.BoneTransforms[bone].scale) *
Matrix.CreateFromQuaternion(activeAnimations[0].ModelAnimationPlayer.BoneTransforms[bone].rotation) *
Matrix.CreateTranslation(activeAnimations[0].ModelAnimationPlayer.BoneTransforms[bone].position);
}
}
// When the local bone transforms change the world bone transforms are updated.
UpdateLocalBoneTransforms();
// Remove finished animations from the active animations (Change the list to array TODO)
for (int i = 0; i < activeAnimations.Count; i++)
{
if (activeAnimations[i].ModelAnimationPlayer.State == MediaState.Stopped)
{
activeAnimations.Remove(activeAnimations[i]);
i--;
}
}
} // Update
