[vtkusers] Creating Structured Point Set of Cells From 3D Matrix

[William Pierce]

I have a 3D matrix filled with double values which I want to put into a structured point set and then contour using a vtkContourFilter. I can't work out how to do this. The problem is, all the examples of isosurface extraction using a contour filter use a vtkReader or vtkVolumeReader to read in the data. I already have the data, in the form of a 3D matrix (indexed by i,j,k). I want to create a vtkStructuredPoints, and fill it with this cell data. The problem is, I can't work out how to fill it.


I want to do something like:


vtkStructuredPoints structuredPoints = new vtkStructuredPoints();

double value = dataMatrix.get(i,j,k);
structuredPoints.addCell(i,j,k, value);

 

Any help would be greatly appreciated,
Thanks,
Will Pierce

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