[Paraview] Visualize slice thickness?

[pat marion]

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

On Thu, Jul 30, 2009 at 2:54 PM, David Doria<daviddoria at gmail.com> wrote:
>
>
> On Thu, Jul 30, 2009 at 2:35 PM, pat marion <pat.marion at kitware.com> wrote:
>>
>> You could try the Extract Cells By Region filter, set it to plane,
>> then check "extract only intersected" and "extract intersected."
>>
>> http://patmarion.com/pv/extract_region.png
>>
>> Pat
>
> Pat,
>
> Yes, that is exactly what I'm looking for. The only difference is that that
> cutting plane moves in infinitesimally small steps that eventually line up
> with the next step of the actual image cell grid, where the "slice"
> representation moves in discrete steps, one column of the image grid at a
> time. Would it be hard to combine these two functions to produce this
> functionality?
>
> Thanks,
>
> David
>
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