[vtkusers] How to loop around vtkAppendPolydata ?

[tutu lamotte]

I missed some details !

The goal is to get rid of the initial small polydata.
And we don`t know in advance how many will need to be
appended.
Because the initial small polydata are to be deleted,
we need to use the vtkAppendPolydata's output somehow.

Hope this clarifies our case !

Thanks !


--- Wen-Hsing Chiang <wchiang at iesinet.com> wrote:
> Hi,
> If I understand it correctly, you might want to use
> the following code
> to append (accumulate) many many instances of
> vtkPolydata to an instance
> of vtkAppendPolydata.
> 
> Here goes the code:
> 
> //create an instance of vtkAppendPolydata
> vtkAppendPolydata * pAppendPolyData =
> vtkAppendPolydata::New(); 
>     	
> //loop over all vtkpolydata objects you want to
> append to
> pAppendPolyData
>   //create APolydataObject
> 	.....
> 
>   //Append APolydataObject to pAppendPolyData
>   pAppendPolyData->AddInput(APolydataObject);
> 
>   //delete pAppendPolyData
>   APolydataObject->Delete();
> //end of the loop
> 
> 
> 
> 
> Wen-Hsing Chiang
>   
> 
> 
> 
> -----Original Message-----
> From: vtkusers-admin at vtk.org
> [mailto:vtkusers-admin at vtk.org] On Behalf
> Of tutu lamotte
> Sent: Thursday, September 25, 2003 1:42 PM
> To: vtkusers at vtk.org
> Subject: [vtkusers] How to loop around
> vtkAppendPolydata ?
> 
> 
> Dear List !
> 
> We need to find a way to "accumulate" many polydata
> that are manually created (Without source object).
> The
> huge accumulated polydata would be the output of a
> vtkAppendPolydata
> instance. Now because it is an accumulation, it
> means that the output
> would also need to be the input of the same
> vtkAppendPolydata instance.
> Each new polydata would be inserted as a second
> input. (this second
> input would be disconnected after Update is called
> on the Append filter.
> ) We've tried that approach but the end result is
> always one single
> polydata... and not an accumulation of all the
> datasets that were
> appended.
> 
> Hope it's clearly explained !
> 
> Thanks for any suggestions !
> 
> 
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