[vtkusers] accelerated convert vtkImageData to vtkPoints

[Jothybasu Selvaraj]

Try this

http://www.vtk.org/Wiki/VTK/Examples/Cxx/ImageData/ImageDataGeometryFilter

Jothy

On Thu, Apr 5, 2012 at 10:21 AM, qwcbeyond <340181048 at qq.com> wrote:

> I use this method，but it's too slow.........help.....
> when I convert a 512*512*365 volume to vtkPoints,it takes several minutes.
>
>   vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
>
>  int subId, cellNum;
> double *paraCoords = new double[3];
> double *xyzCoords  = new double[3];
> double *vtkcellweights = new double[4];
>
> int NumberOfImageDataVoxels=image->GetNumberOfPoints();
>
> for (cellNum = 0; cellNum < NumberOfImageDataVoxels; cellNum++ )
> {
> subId = image->GetCell( cellNum )->GetParametricCenter(paraCoords);
> int &subIDadd = subId;
> image->GetCell(cellNum)->EvaluateLocation(subIDadd, paraCoords,
> xyzCoords, vtkcellweights);
>
> points->InsertNextPoint(xyzCoords);
>
> }
>
> --
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> Sent from the VTK - Users mailing list archive at Nabble.com.
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-- 
Jothy
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