I am inputting multiple contours into a vtkAppendPolyData object, does it matter what order I add these contours? I want to create a convex hull. Say from left to right, I create a large circle, small circle, and large circle. I would like to form a convex hull that looks like a hourglass. I tried using vtkDelaunay3D to render it, but I ended up getting a hull that looks like a cylinder.
Any help would be appreciated. Thanks!