/// <summary>
/// Runs an animation.
/// </summary>
/// <param name="avatar">The avatar to run animation for.</param>
/// <param name="animation">The animation to run.</param>
/// <returns>Handle to the animation run.</returns>
public AnimationHandle RunAnimation(Avatar avatar, Animation animation)
{
var instance = new AnimationHandle(this);
instance.Animation = animation;
instance.Avatar = avatar;
Animations.Add(instance);
return instance;
}
/// <summary>
/// Renders an animation's frame.
/// </summary>
/// <param name="avatar">The avatar which the animation is run for.</param>
/// <param name="animation">The animation.</param>
/// <param name="frame">Frame number in animation.</param>
/// <param name="fraction"></param>
/// <returns>Status of animation.</returns>
public static AnimationStatus RenderFrame(Avatar avatar, Animation animation, int frame, float fraction)
{
if (frame < 0 || frame > animation.NumFrames) return AnimationStatus.COMPLETED;
var numDone = 0;
foreach (var motion in animation.Motions)
{
var bone = avatar.Skeleton.GetBone(motion.BoneName);
if (bone == null) continue; //fixes bugs with missing bones.. need to find out what R_FINGERPOLY0 is though.
var motionFrame = frame;
if (frame >= motion.FrameCount)
{
numDone++;
motionFrame = (int)motion.FrameCount - 1;
}
if (motion.HasTranslation)
{
if (fraction >= 0)
{
var trans1 = animation.Translations[motion.FirstTranslationIndex + motionFrame];
var trans2 = (frame + 1 >= motion.FrameCount) ? trans1 : animation.Translations[motion.FirstTranslationIndex + motionFrame+1];
bone.Translation = Vector3.Lerp(trans1, trans2, fraction);
}
else
{
bone.Translation = animation.Translations[motion.FirstTranslationIndex + motionFrame];
}
}
if (motion.HasRotation)
{
if (fraction >= 0)
{
var quat1 = animation.Rotations[motion.FirstRotationIndex + motionFrame];
var quat2 = (frame + 1 >= motion.FrameCount) ? quat1 : animation.Rotations[motion.FirstRotationIndex + motionFrame + 1];
bone.Rotation = Quaternion.Slerp(quat1, quat2, fraction);
}
else
{
bone.Rotation = animation.Rotations[motion.FirstRotationIndex + motionFrame];
}
}
}
avatar.ReloadSkeleton();
return AnimationStatus.IN_PROGRESS;
}