public static AnimationClip ReSample(GameSkeleton skeleton, AnimationClip newAnim, int newFrameCount, float playTime)
        {
            var output = newAnim.Clone();

            output.DynamicFrames.Clear();

            var fraction = 1.0f / (newFrameCount - 1);

            for (int i = 0; i < newFrameCount; i++)
            {
                float t        = i * fraction;
                var   keyframe = AnimationSampler.Sample(t, skeleton, new List <AnimationClip> {
                    newAnim
                });

                KeyFrame newKeyFrame = new KeyFrame();
                for (int mappingIndex = 0; mappingIndex < output.RotationMappings.Count; mappingIndex++)
                {
                    var mapping = output.RotationMappings[mappingIndex];
                    if (mapping.HasValue)
                    {
                        newKeyFrame.Rotation.Add(keyframe.BoneTransforms[mappingIndex].Rotation);
                    }
                }

                for (int mappingIndex = 0; mappingIndex < output.TranslationMappings.Count; mappingIndex++)
                {
                    var mapping = output.TranslationMappings[mappingIndex];
                    if (mapping.HasValue)
                    {
                        newKeyFrame.Position.Add(keyframe.BoneTransforms[mappingIndex].Translation);
                    }
                }

                output.DynamicFrames.Add(newKeyFrame);
            }

            output.PlayTimeInSec = playTime;// (output.DynamicFrames.Count() - 1) / 20.0f;

            return(output);
        }
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        void UpdateAnimationFrame()
        {
            if (IsEnabled == false)
            {
                _currentAnimFrame = null;
                return;
            }

            float sampleT           = 0;
            float animationLengthMs = GetAnimationLengthMs();

            if (animationLengthMs != 0)
            {
                sampleT = (float)(_timeSinceStart.TotalMilliseconds / animationLengthMs);
            }
            _currentAnimFrame = AnimationSampler.Sample(sampleT, _skeleton, _animationClips);
            if (_skeleton != null)
            {
                _skeleton.Update();
            }
        }