private void StartRealtimePrivate(double time, DateTime start)
{
startTime = start;
this.Duration = forecast;
this.RepeatBehavior = new RepeatBehavior(1);
calculator.StartRealtime(time);
this.Completed += Linear6DMotion_RealtimeAnimationCompleted;
System.Windows.Media.Media3D.Vector3D v =
new System.Windows.Media.Media3D.Vector3D(rotationAxis[0],
rotationAxis[1], rotationAxis[2]);
angle_uniform.Axis = v;
angle_uniform.Angle = 0;
double[] quaternion = calculator.QuaternionBegin;
double[] coord = calculator.Begin;
Quaternion qua = new Quaternion(quaternion[1], quaternion[2], quaternion[3], quaternion[0]);
quaternionConstRotation.Quaternion = qua;
translation.OffsetX = coord[0];
translation.OffsetY = coord[1];
translation.OffsetZ = coord[2];
From = 0;
To = 1;
animatable.BeginAnimation(dependencyProperty, this);
}