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API > API/Runtime > API/Runtime/CADKernel > API/Runtime/CADKernel/Geo > API/Runtime/CADKernel/Geo/Surfaces > API/Runtime/CADKernel/Geo/Surfaces/FSurface > API/Runtime/CADKernel/Geo/Surfaces/FSurface/LinesNotDerivables
References
| Module | CADKernel |
| Header | /Engine/Source/Runtime/Datasmith/CADKernel/Base/Public/Geo/Surfaces/Surface.h |
| Include | #include "Geo/Surfaces/Surface.h" |
virtual void LinesNotDerivables
(
const FSurfacicBoundary & Bounds,
int32 InDerivativeOrder,
FCoordinateGrid & OutNotDerivableCoordinates
) const