true if and only if the evaluator optimization is turned on.

Returns the current evaluation mode.

If the method returns false, there is no optimization of an internal evaluator. This mode generally should be used if only one or two values per interval between two consecutive knots are evaluated. 

If the method returns true, then the evaluator optimization is turned on. This provides better performance if three or more values per knot interval are computed.

OdGeNurbCurve3d Methods