Definition
The file data structure of the BSpline entity is as follows, it consists parametric information followed by a list of the control point coordinate components. The format for non-uniform and period knot vectors is not detailed here.
[TBSpline]
Order=order
NumPoints=n
p1x p1y p1z
p2x p2y p2z
... ... ...
... ... ...
pnx pny pnz
Example
[TBSpline]
Order=4
NumPoints=5
24.324 31.900 0.000
27.904 35.667 0.000
32.975 30.764 0.000
39.483 37.180 0.000
46.179 30.594 0.000