[vtk-developers] vtkPlane DeepCopy?

[David Gobbi]

On Sat, Dec 5, 2009 at 2:38 PM, David Doria <daviddoria+vtk at gmail.com> wrote:
> Is there a reason vtkPlane doesn't have a copy function? I.e. if I
> write one can we add it?

I don't think it's a good idea.  In general, vtkImplicitFunction
object cannot be copied, and if they could, then a virtual "Copy"
method should be added to the virtual base class first.

For example, would your copy method do a copy of the transform?  Or
just of the Normal and Origin?

If you would only copy the Normal and Origin, then it's hardly
worthwhile to add a method that does something so trivial.  If you are
also copying the transform, then you should definitely copy the
transform in the base class, and not in vtkPlane.

   David