[vtkusers] Create surface from isolines?

[Jeff Lee]

Are you trying to do contour banding?  If so, there is a filter 
vtkBandedPolyDataContourFilter which does this.
-Jeff

Chris Scharver wrote:

>At 1:04 AM +0200 04/26/2003, Charl P. Botha wrote:
>  
>
>>vtkRuledSurfaceFilter could do the trick if I understand your explanation
>>correctly.
>>    
>>
>
>Aha! Thank you for pointing me in exactly the right direction! This was just where I need to go! I had to fix the ordering, so here's what else I did...
>
>I am trying to avoid resampling as much as possible. The lines for vtkRuledSurfaceFilter need to have an equal number of points, so I had to make a concession there. The output from vtkCutter is broken into separate lines, so I added vtkStripper to merge them together. Because the clipped lines were made separately, they are not correctly aligned for use by vtkRuledSurfaceFilter. However, the visual result indicated that I could cheat by flipping the ordering for one of the lines. I had to fudge things by using vtkPolyData::reverseSense(). I have a beautiful, solidly clipped object now! I'll try to clean up my code to contribute in case others may find it to be a useful example.
>
>I less kludgy approach would involve sorting the points of the lines so they align properly when applying the filter. I'll have to check to see how well I can manage using vtkDepthSortPolyData to do just that.
>
>Thanks tremendously!
>Chris
>--
>Chris Scharver
>Electronic Visualization Laboratory
>The University of Illinois at Chicago
>Ph: 312-996-3002   FAX: 312-413-7585
><http://www.evl.uic.edu/scharver/>
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-- 
Jeff Lee
Software Engineer
Computational Dynamics North America Ltd
21 Lafayette Street, Suite 230
Lebanon NH 03766 USA
fax:   603 643 9994
phone: 603 643 9993 x109
http://www.cd-adapco.com