[vtkusers] recovering the Polydata

[Robbie Banks]

To get polydata you will have to safe downcast, I,e.

Vtkploydata::safedowncast(actor->GetMapper()->GetInput())

I think

On Jun 22, 2010, at 8:20 AM, Darshan Pai <darshanpai at gmail.com> wrote:

> I am just wondering , maybe I am wrong, but if you delete the Input  
> then Actor->GetMapper()->GetInput() should fail . Maybe that is your  
> error here ?
>
> On Tue, Jun 22, 2010 at 10:59 AM, Jothy <jothybasu at gmail.com> wrote:
> Actor.Getmapper()->GetInput() work well for me.
>
> Verify your input
>
> Jothy
>
> On Tue, Jun 22, 2010 at 3:44 PM, Giancarlo Amati <ilferraresebono at hotmail.it 
> > wrote:
> Hello everybody,
>
> I am trying to retrieve the polydata linked to a particular actor. I  
> have my actor saved in a list
> I used the "GetMapper" function to get the pointer to a vtkMapper *  
> and the I used
> the function "IsA" to test if it is a vtkPolyDataMapper.
> The IsA function returns true and I used
>
> vtkPolyData *pd = mapper->GetInput();
>
> to retrieve the polydata, but somehow I don't get anything  
> reasonable and the number of vertices is 0.
>
> is that the right way to retrieve a polydata from the pipeline?
>
> Many thanks.
> Giancarlo
>
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