/// <summary>
/// Defines what to do when processing the animation.
/// </summary>
/// <param name="stream">The animation stream to work on.</param>
public void ProcessAnimation(AnimationStream stream)
{
float w = jobWeight.Get(stream);
float streamDt = Mathf.Abs(stream.deltaTime);
driven.GetGlobalTR(stream, out Vector3 drivenPos, out Quaternion drivenRot);
if (w > 0f && streamDt > 0f)
{
source.GetGlobalTR(stream, out Vector3 sourcePos, out Quaternion sourceRot);
var sourceTx = new AffineTransform(sourcePos, sourceRot);
var targetTx = sourceTx * localBindTx;
targetTx.translation = Vector3.Lerp(drivenPos, targetTx.translation, w);
targetTx.rotation = Quaternion.Lerp(drivenRot, targetTx.rotation, w);
var dampPosW = AnimationRuntimeUtils.Square(1f - dampPosition.Get(stream));
var dampRotW = AnimationRuntimeUtils.Square(1f - dampRotation.Get(stream));
bool doAimAjustements = Vector3.Dot(aimBindAxis, aimBindAxis) > 0f;
while (streamDt > 0f)
{
float factoredDt = k_DampFactor * Mathf.Min(k_FixedDt, streamDt);
prevDrivenTx.translation +=
(targetTx.translation - prevDrivenTx.translation) * dampPosW * factoredDt;
prevDrivenTx.rotation *= Quaternion.Lerp(
Quaternion.identity,
Quaternion.Inverse(prevDrivenTx.rotation) * targetTx.rotation,
dampRotW * factoredDt
);
if (doAimAjustements)
{
var fromDir = prevDrivenTx.rotation * aimBindAxis;
var toDir = sourceTx.translation - prevDrivenTx.translation;
prevDrivenTx.rotation =
Quaternion.AngleAxis(Vector3.Angle(fromDir, toDir), Vector3.Cross(fromDir, toDir).normalized) * prevDrivenTx.rotation;
}
streamDt -= k_FixedDt;
}
driven.SetGlobalTR(stream, prevDrivenTx.translation, prevDrivenTx.rotation);
}
else
{
prevDrivenTx.Set(drivenPos, drivenRot);
AnimationRuntimeUtils.PassThrough(stream, driven);
}
}
