[vtkusers] NULL check and reinitialize vtkSmartPointer<vtkImageData>

Jothybasu Selvaraj jothybasu at gmail.com
Mon Oct 31 10:36:01 EDT 2011


May be you should use vtkImageChangeInformation(changer) and then

this->imageData=changer->GetOutput().


Jothy

On Mon, Oct 31, 2011 at 2:32 PM, Divya Rathore <divyarathore at gmail.com>wrote:

> Hi All,
>
> I have a vtkSmartPointer of vtkImageData:
>
> // declaration in header //
> vtkSmartPointer<vtkImageData> imageData;
>
> // implementation in .cpp //
> // get values from elsewhere and feed into this //
> imageData->SetDimensions(width, height, depth);
> imageData->SetNumberOfScalarComponents(1);
> imageData->SetScalarTypeToUnsignedShort();
> imageData->SetSpacing(spacingX, spacingY, spacingZ);
> imageData->SetOrigin(originX, originY, originZ);
>
>
> During the overall lifecycle of the application, I need to NULL check and
> feed values into imageData multiple times. It being a smart pointer, I
> can't call:
>
> imageData->Delete(); // WRONG! Its a smart pointer.
>
> what's the way to reinitialize the dimensions, spacing, origin etc
> (emptying this pointer back to its initial state)?
>
>
> best regards,
> Divya
>
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-- 
Jothybasu K Selvaraj
PhD Student
University of Liverpool
Liverpool,UK
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