//private static Dictionary<UnityEngine.AnimationClip, List<AnimationCurve>> s_curvesPerClip = new Dictionary<AnimationClip, List<AnimationCurve>> ();
private static UnityEngine.AnimationClip Convert(Clip animation, FrameContainer frames,
out UVector3 rootStart, out UVector3 rootEnd)
{
var clip = new UnityEngine.AnimationClip();
clip.legacy = true;
var rotateAxes = new[] {
new { Name = "x", Mask = new UVector4(1f, 0f, 0f, 0f) },
new { Name = "y", Mask = new UVector4(0f, 1f, 0f, 0f) },
new { Name = "z", Mask = new UVector4(0f, 0f, 1f, 0f) },
new { Name = "w", Mask = new UVector4(0f, 0f, 0f, 1f) }
};
var root = animation.Bones.FirstOrDefault(x => x.BoneId == 0);
if (root != null && root.FrameCount > 0)
{
rootStart = Types.Convert(root.Frames.First().Translation);
rootEnd = Types.Convert(root.Frames.Last().Translation);
}
else
{
rootStart = rootEnd = UVector3.zero;
}
foreach (var bone in animation.Bones)
{
if (!frames.HasBoneWithId(bone.BoneId)) // what are these used for ?
{
if (bone.BoneId != -1)
{
Debug.LogWarning($"Bone with id {bone.BoneId} does not exist");
}
continue;
}
var bFrames = bone.Frames;
var frame = frames.GetByBoneId(bone.BoneId);
string bonePath = frame.Path;
AnimationCurve curve;
var axisAngle = bFrames.ToDictionary(x => x, x =>
{
var q = Types.Convert(x.Rotation);
float ang; UnityEngine.Vector3 axis;
q.ToAngleAxis(out ang, out axis);
return(new UVector4(q.x, q.y, q.z, q.w));
});
foreach (var axis in rotateAxes)
{
var keys = bFrames
.Select(x => new Keyframe(x.Time * TimeScale,
UVector4.Dot(axisAngle[x], axis.Mask)))
.ToArray();
curve = new UnityEngine.AnimationCurve(keys);
clip.SetCurve(bonePath, typeof(Transform), "localRotation." + axis.Name,
curve);
//OnCurveAddedToClip (clip, curve);
}
var converted = bFrames.Select(x => Types.Convert(x.Translation)).ToArray();
if (!converted.Any(x => !x.Equals(UVector3.zero)))
{
continue;
}
var anyVelocities = false;
var deltaVals = converted.Select((x, i) =>
{
var prev = Math.Max(0, i - 1);
var next = Math.Min(i + 1, converted.Length - 1);
var prevTime = bFrames[prev].Time * TimeScale;
var nextTime = bFrames[next].Time * TimeScale;
return(prevTime == nextTime || !(anyVelocities = true) ? UVector3.zero
: (converted[next] - converted[prev]) / (nextTime - prevTime));
}).ToArray();
foreach (var translateAxis in s_translateAxes)
{
var positions = bFrames
.Select((x, i) => new Keyframe(x.Time * TimeScale,
UVector3.Dot(frame.transform.localPosition + converted[i], translateAxis.Mask)))
.ToArray();
var deltas = bFrames.Select((x, i) => new Keyframe(x.Time * TimeScale,
UVector3.Dot(deltaVals[i], translateAxis.Mask))).ToArray();
clip.SetCurve(bonePath, typeof(Transform), "localPosition." + translateAxis.Name,
new UnityEngine.AnimationCurve(positions));
if (!anyVelocities)
{
continue;
}
clip.SetCurve(bonePath, typeof(BFrame), "LocalVelocity." + translateAxis.Name,
new UnityEngine.AnimationCurve(deltas));
}
}
clip.wrapMode = WrapMode.Loop;
clip.EnsureQuaternionContinuity();
return(clip);
}