[Paraview] Visualize slice thickness?

[pat marion]

Or, without using servermanager.Fetch, just:

w = Wavelet()
w.GetDataInformation().GetBounds()
w.GetDataInformation().GetExtents()

Pat

On Thu, Jul 30, 2009 at 4:43 PM, pat marion<pat.marion at kitware.com> wrote:
> You can do this:
>
> w = Wavelet()
> image = servermanager.Fetch(w)
>
> image.GetExtent()
> image.GetOrigin()
> image.GetSpacing()
>
> Calling servermanager.Fetch is going to pull the image data from the
> paraview server to the paraview client, so if the data is big, it
> could take some time and use up a lot of memory.
>
> Pat
>
> On Thu, Jul 30, 2009 at 3:58 PM, David Doria<daviddoria at gmail.com> wrote:
>>
>> On Thu, Jul 30, 2009 at 3:23 PM, pat marion <pat.marion at kitware.com> wrote:
>>>
>>> Why this sounds like a great opportunity for the new python macro
>>> feature :-)  You could two scripts, StepForward.py and
>>> StepBackward.py, and add them to the macros toolbar.  Now you'll have
>>> two buttons for stepping forward and backward.  I don't have time
>>> right now to figure out the complete script but it would be something
>>> like...
>>>
>>> e = GetActiveSource()
>>> # maybe make sure e.GetVTKClassName() == "vtkExtractGeometry"
>>> e.IntersectWith = "Plane"
>>> planeOrigin = e.IntersectWith.Origin
>>> imageInput = e.Input[0]
>>> e.IntersectWith.Origin = computeNewOrigin(planeOrigin, imageInput)
>>>
>>> Then all you need to do is write the computeNewOrigin method that
>>> takes the image, gets the origin, extens, and spacing, and then
>>> computes a new plane origin to step the plane one discreet step
>>> forward or backward.
>>>
>>> Pat
>>
>> These macros are very cool! That code was right on, it works perfectly if I
>> set the new origin to a constant.
>> e.IntersectWith.Origin = [x,y,z]
>>
>> Now for writing computeNewOrigin(), I looked at dir(imageInput) but I didn't
>> see properties like "spacing" or "cellSize" - where should I look to find
>> out how to get those properties from an image in python?
>>
>> Thanks,
>>
>> David
>>
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>