[vtkusers] how to create a vtkDataSet according to the type of the input

[David E DeMarle]

Try data->NewInstance()

On Nov 7, 2017 3:03 AM, "frank" <frank1985876 at gmail.com> wrote:

> Hi, all
>
> If I want to create a vtkDataSet according to type of the input
> (vtkDataSet*), I can do that with the code below.
> Is there any way to get rid of those if-else? Any way like vtkDataArray
> do? vtkDataArray* a = vtkDataArray::CreateDataArray(array->GetDataType());
>
> //----------------
> vtkDataSet *data;
> if (input->IsA("vtkImageData"))
>     data = vtkImageData::New();
> else if (input->IsA("vtkStructuredGrid"))
>     data = vtkStructuredGrid::New();
> …
> //----------------
>
> Thank you!
>
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