[vtkusers] Help！How can i draw B-spline curves using VTK？

[Ye Jun]

now i need to draw B-spline curves to represent the contour of the segmented
object, but i did not know how to draw it with vtk, is there any methods to
combine rendering the actor using vtk and drawing the B-spline curves using
opengl in the same window?or how can vtk draw a B-spline curves?
thank you in advance!!

alex
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