Because the documentation is unclear:<br><br>"Get the points in this contour as a vtkPolyData" made me believe you get just the clicked points and no connectivity.<br><br>So how do I get just the non interpolated points?<br>
<br><div class="gmail_quote">
On Feb 13, 2008 9:15 AM, kent williams <<a href="mailto:nkwmailinglists@gmail.com" target="_blank">nkwmailinglists@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
See, now that is why they pay you the big bucks, Dean! I actually use<br>the ContourAsPolyData thinger to build a binary image from the contour<br>collection I build, but didn't think of it in this context.<br><br>I can certainly iterate through the points and find plane<br>
intersections myself, but is there a VTK class or filter that will do<br>it for me. I may not be the smartest tool in the shed, but I have<br>been looking through the documentation and not seeing anything<br>obvious.<br>
<br>On Tue, Feb 12, 2008 at 3:13 PM, <<a href="mailto:dean.inglis@camris.ca" target="_blank">dean.inglis@camris.ca</a>> wrote:<br>> why do you have to do anything with the contour<br>> rep? Why not just get the polydata from the<br>
> rep (GetContourRepresentationAsPolyData) and find<br>> the intersection of that with whatever plane?<br>><br>> Dean<br>><br>><br>> > Subject: [vtk-developers] vtkContourWidget -- how to display 'off-plane'<br>
> > contours?<br><div>><br>> ><br>> > As long as I'm asking hard questions, consider this scenario.<br>> ><br>> > My application maintains 3 orthogonal views of the same volume:<br>
> > Sagittal, Axial, Coronal.<br>> ><br>> > The advantage of using VTK is not having to write all the code that's<br>> > already in VTK. The disadvantage is that if you want to do something<br>
> > not currently done in VTK, you have to crack open a bunch of 'black<br>> > boxes' and monkey around with the spaghetti wiring inside.<br>> ><br>> > Our old tracing application let you trace on one view (e.g. Sagittal),<br>
> > and in the other 2 views, it displayed the intersection of all the<br>> > traced contours with the image plane of those other two views.<br>> ><br>> > So I'm in the unenviable position of cracking open the<br>
> > vtkContourRepresentation, and somehow finding the intersection of the<br>> > contour and the plane of an orthoganal view, and then show the<br>> > intersection.<br>> ><br>> > So I guess my question is this: How would I do this the VTK way?<br>
> > _______________________________________________<br></div>> > vtk-developers mailing list<br>> > <a href="mailto:vtk-developers@vtk.org" target="_blank">vtk-developers@vtk.org</a><br>> > <a href="http://www.vtk.org/mailman/listinfo/vtk-developers" target="_blank">http://www.vtk.org/mailman/listinfo/vtk-developers</a><br>
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