Add importings in NurbsHandler

Author: zjiang0529

pygem/nurbshandler.py

@@ -6,16 +6,22 @@
 import os
 import numpy as np
 import OCC.TopoDS
-from OCC.BRep import (BRep_Tool, BRep_Builder)
+from OCC.BRep import (BRep_Tool, BRep_Builder, BRep_Tool_Curve)
 from OCC.BRepBuilderAPI import (BRepBuilderAPI_MakeEdge, BRepBuilderAPI_MakeFace, \
-	BRepBuilderAPI_NurbsConvert, BRepBuilderAPI_MakeWire)
+	BRepBuilderAPI_NurbsConvert, BRepBuilderAPI_MakeWire, BRepBuilderAPI_Sewing)
 from OCC.Display.SimpleGui import init_display
-from OCC.GeomConvert import geomconvert_SurfaceToBSplineSurface
-from OCC.ShapeFix import ShapeFix_ShapeTolerance
+from OCC.GeomConvert import (geomconvert_SurfaceToBSplineSurface,
+							 geomconvert_CurveToBSplineCurve)
+from OCC.ShapeFix import (ShapeFix_ShapeTolerance, ShapeFix_Shell)
+from OCC.ShapeAnalysis import ShapeAnalysis_WireOrder
+import OCC.Precision
 from OCC.StlAPI import StlAPI_Writer
-from OCC.TopAbs import (TopAbs_FACE, TopAbs_EDGE)
-from OCC.TopExp import TopExp_Explorer
+from OCC.TopAbs import (TopAbs_FACE, TopAbs_EDGE, TopAbs_WIRE, TopAbs_FORWARD,
+						TopAbs_SHELL)
+from OCC.TopExp import (TopExp_Explorer, topexp)
 from OCC.gp import (gp_Pnt, gp_XYZ)
+from OCC.TColgp import (TColgp_Array1OfPnt, TColgp_Array2OfPnt)
+from OCC.BRepOffsetAPI import BRepOffsetAPI_FindContigousEdges
 from matplotlib import pyplot
 from mpl_toolkits import mplot3d
 from stl import mesh