[vtkusers] Rendering of spheres

[Bernhard Peters]

Dear all,

in order to display speres of different sizes in 3D, I have taken the 
following approach:

create a vtkSphereSource for each sphere to be displayed
create a vtkPolyDataMapper for each sphere to be displayed
create an vtkActor for each sphere to be displayed

For adding other geometries such as a cube I would apply the same 
procedure.
For spheres only it worked already.

I wonder whether that is the correct way to do it in VTK since I am 
still a beginner with VTK.

A last question: After having created all these actors for different 
geometries should I push them into an assembly or into a vtkRenderer ?
What is better?


Thanks a lot

Bernhard