[vtkusers] Re: [vtk-developers] vtkContourWidget -- how to display 'off-plane' contours?
nkwmailinglists at gmail.com
Wed Feb 13 12:15:10 EST 2008
See, now that is why they pay you the big bucks, Dean! I actually use
the ContourAsPolyData thinger to build a binary image from the contour
collection I build, but didn't think of it in this context.
I can certainly iterate through the points and find plane
intersections myself, but is there a VTK class or filter that will do
it for me. I may not be the smartest tool in the shed, but I have
been looking through the documentation and not seeing anything
On Tue, Feb 12, 2008 at 3:13 PM, <dean.inglis at camris.ca> wrote:
> why do you have to do anything with the contour
> rep? Why not just get the polydata from the
> rep (GetContourRepresentationAsPolyData) and find
> the intersection of that with whatever plane?
> > Subject: [vtk-developers] vtkContourWidget -- how to display 'off-plane'
> > contours?
> > As long as I'm asking hard questions, consider this scenario.
> > My application maintains 3 orthogonal views of the same volume:
> > Sagittal, Axial, Coronal.
> > The advantage of using VTK is not having to write all the code that's
> > already in VTK. The disadvantage is that if you want to do something
> > not currently done in VTK, you have to crack open a bunch of 'black
> > boxes' and monkey around with the spaghetti wiring inside.
> > Our old tracing application let you trace on one view (e.g. Sagittal),
> > and in the other 2 views, it displayed the intersection of all the
> > traced contours with the image plane of those other two views.
> > So I'm in the unenviable position of cracking open the
> > vtkContourRepresentation, and somehow finding the intersection of the
> > contour and the plane of an orthoganal view, and then show the
> > intersection.
> > So I guess my question is this: How would I do this the VTK way?
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