[vtkusers] get vtkImageData point

[arwtyxouymz]

Hi,

I get the pixel value from x-y-z real-world coordinate.
For getting pixel value, by vtkImageData Class Reference, GetScalarPoint is
useful but its arguments are only int, i-j-k points of image.

So I want to convert real-world x-y-z coordinate to image i-j-k points and
get pixel value.
If there is directory converting method, please tell me.

Or
I could convert x-y-z coordinate to vtkIdType by using FindPoint method.
So, please tell me the method converting vtkIdType to image i-j-k points.

Please help!




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