how to specifiy NURBS evaluation precision?


I have a NURBS curve ranging over 10^4 units and I want to evaluate the curve with a precision of 10^-6 units. Is there a way to increase the (total/relative) precision of nurbs evaluation in Open CASCADE?
At the moment GCPnts_TangentialDeflection creates a polygon containing stairs. I suspect, this is a result from a relative nurbs evaluation precision of about 10^-6.

Fabian Hachenberg's picture

my bad, I prompted the values using a relative precision of only 10^-6. My dive into the BSplCLib-sources reveleaded, that there's no artificial approximation tolerance for the spline evaluation. :)