[vtkusers] Drawing the output from vtkContourFilter on a height field

[Jahn Otto Næsgaard Andersen]

Hi,

I have a vtkImageData which I'm visualizing as a terrain map. I'm
visualizing this as a height field.

I would also like to draw the contour map on this terrain map like this:
http://www.pacificislandtravel.com/nature_gallery/mapprojection5.gif

Using vtkContourFilter, however, all the contour polylines are in one plane.

I can see two options:

1) Rasterize the output from vtkContourFilter into an image and using this
as a texture on the terrain map

or

2) Warp the vtkContourFilter in the z direction so that it matches the
geometry of the height field.

I can't figure out how to to any of those, however. Any ideas?

Note: I'm doing this in ActiViz, so I can't create subclasses of existing
VTK classes.


-- 
Jahn Otto
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20121029/469d87c3/attachment.htm>