public void Rotate( Quaternion qnorm )
{
// Note the order of the mult, i.e. q comes after
// Normalise the quat to avoid cumulative problems with precision
qnorm.Normalize();
this.orientation = qnorm*this.orientation;
InvalidateView();
}
/// <summary>
/// Rotate the node around an arbitrary axis using a Quaternion.
/// </summary>
public virtual void Rotate( Quaternion rotation, TransformSpace relativeTo )
{
rotation.Normalize(); // avoid drift
switch ( relativeTo )
{
case TransformSpace.Parent:
// Rotations are normally relative to local axes, transform up
orientation = rotation * orientation;
break;
case TransformSpace.World:
orientation = orientation * DerivedOrientation.Inverse() * rotation * DerivedOrientation;
break;
case TransformSpace.Local:
// Note the order of the mult, i.e. q comes after
orientation = orientation * rotation;
break;
}
NeedUpdate();
}
