/// <summary>
/// Create a new Animation with a constrained fps based on this animation.
/// </summary>
/// <param name="fps">The new frame rate</param>
/// <returns>A new animation constrained by a given frame rate.</returns>
public NUIHumanoidAnimation ConstrainFramerate(int fps)
{
NUIHumanoidAnimation animation = new NUIHumanoidAnimation();
NUIAnimationKeyframe finalFrame = this.Keyframes[this.Keyframes.Count - 1];
float finalTime = finalFrame.ElapsedTime;
float currentTime = 0f;
float timeIncrements = (1 / (float)fps);
while (currentTime < finalTime)
{
// Find one or two keyframes that straddle the currentTime
NUIAnimationKeyframe keyframe1 = null;
NUIAnimationKeyframe keyframe2 = null;
for (int i = 0; i < this.Keyframes.Count - 1; i++)
{
keyframe1 = this.Keyframes[i];
keyframe2 = this.Keyframes[i + 1];
if (keyframe1.ElapsedTime <= currentTime && currentTime < keyframe2.ElapsedTime)
{
break;
}
}
// Determine the joint values at the current Time.
if (currentTime == keyframe1.ElapsedTime)
{
animation.AddKeyframe(keyframe1.Skeleton, (long)(currentTime * 1000));
}
else if (keyframe1.ElapsedTime <= currentTime && currentTime < keyframe2.ElapsedTime)
{
NUISkeleton tweenedSkeleton = new NUISkeleton();
foreach (NUIJointType jointType in keyframe1.Skeleton.Joints.Keys)
{
float t = (currentTime - keyframe1.ElapsedTime) / (keyframe2.ElapsedTime - keyframe1.ElapsedTime);
Vector3 position = Vector3.Lerp(keyframe1.Skeleton.Joints[jointType].Position, keyframe2.Skeleton.Joints[jointType].Position, t);
Quaternion rotation = Quaternion.identity;
if (keyframe1.Skeleton.Joints[jointType].Rotation.w != 0 && keyframe2.Skeleton.Joints[jointType].Rotation.w != 0)
{
rotation = Quaternion.Lerp(keyframe1.Skeleton.Joints[jointType].Rotation, keyframe2.Skeleton.Joints[jointType].Rotation, t);
}
NUIJoint nuiJoint = new NUIJoint(jointType, position, rotation, false);
tweenedSkeleton.Joints.Add(jointType, nuiJoint);
}
animation.AddKeyframe(tweenedSkeleton, (long)(currentTime * 1000));
}
currentTime += timeIncrements;
}
return(animation);
}
public void AddKeyframe(NUIAnimationKeyframe keyframe)
{
keyframes.Add(keyframe);
}
