[vtkusers] Proper way to append to vtkPoints

[Cory Quammen]

For expanding the list of points, use points->InsertPoint(1, 1, 1, 1)
instead of points->SetPoint(1, 1, 1, 1).

HTH,
Cory

On Wed, Sep 14, 2016 at 2:43 PM, Bud Bundy <budric at gmail.com> wrote:
> Hi,
>
> What's the proper, efficient way to append point data to vtkPoints?  The
> following does not work (assume 2 batches insert thousands of points not 1
> per each batch)
>
>     vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
>     points->SetNumberOfPoints(1);        //first batch insert
>     points->SetPoint(0, 0, 0, 0);
>     points->Resize(2);                    //second batch insert
>     points->SetPoint(1, 1, 1, 1);
>     size_t size = points->GetNumberOfPoints();
>     //size == 1 not 2
>
> I'm using VTK 7.0.0.
>
> Thank you.
>
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-- 
Cory Quammen
Staff R&D Engineer
Kitware, Inc.