[vtkusers] vtkImageData: Is it possible to define array VTK_BIT(image->AllocateScalars) instead of VTK_UNSIGNED_CHAR to mask a polydata?

[Dan Lipsa]

No, it needs to be an unsigned char. This is because different bits from
that unsigned char are used for different things.

https://blog.kitware.com/ghost-and-blanking-visibility-changes/

On Mon, Jul 23, 2018 at 3:01 AM vacingforo <vacingforo at gmail.com> wrote:

> Hello,
>
> I have the following  code :
>
>     vtkSmartPointer<vtkImageData> image =
> vtkSmartPointer<vtkImageData>::New();
>     image->SetSpacing(spacing);
>     image->SetDimensions(dim);
>     image->SetExtent(-1, dim[0] + 1, -1 , dim[1] + 1, 0, dim[2] - 1);
>     image->SetOrigin(origin);
>     image->AllocateScalars(VTK_UNSIGNED_CHAR, 1);
>
>     vtkIdType count = image->GetNumberOfPoints();
>     for (vtkIdType i = 0; i < count; ++i)
>     {
>         image->GetPointData()->GetScalars()->SetTuple1(i, white);
>     }
>
> Is it possible to define array VTK_BIT(image->AllocateScalars) instead of
> VTK_UNSIGNED_CHAR to mask a polydata?. This is in order to reduce the size
> of matrix.
>
> for more details check small application main.cpp in the
> following link:
>
>
>
> https://drive.google.com/file/d/1FBnJw96zz5uv33uh_GYV71OAT05NngOR/view?usp=sharing
>
>
> Best regards,
>
> Sergio
>
>
>
> --
> Sent from: http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html
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