minor fix.

f21476cd · Ilya Portnov · 17c022f0 · f21476cd
--- a/utils/surface/freecad.py
+++ b/utils/surface/freecad.py
@@ -177,7 +177,7 @@ class SvSolidFaceSurface(SvSurface):
    def to_nurbs(self, implementation = SvNurbsMaths.FREECAD):
        faces = self.face.toNurbs().Faces
        nurbs = faces[0].Surface
-        return SvFreeCadNurbsSurface(nurbs, face=faces[0])
+        return SvFreeCadNurbsSurface(nurbs, face=faces[0])#.copy(implementation=implementation)

    def get_min_continuity(self):
        s = self.surface.Continuity[1]
@@ -302,7 +302,7 @@ class SvFreeCadNurbsSurface(SvNurbsSurface):

        return SvFreeCadNurbsCurve(fc_curve)

-    def insert_knot(self, direction, parameter, count=1):
+    def insert_knot(self, direction, parameter, count=1, if_possible=False):
        surface = SvFreeCadNurbsSurface(self.surface.copy())
        tolerance = 1e-6
        if direction == 'U':