[vtkusers] How to use vtkGeoView/vtkGeoTerrain/vtkGeoSource

[David Doria]

On Tue, Feb 16, 2010 at 4:20 AM, Olli <gammelnerd at gmail.com> wrote:

> Hi,
>
> I have a set of DEM files and should implement a multi-resolution terrain
> rendering solution. And ultimately place some 3D data objects to terrain
> view.
>
> Because my data visualization already utilizes VTK, I'm looking for a
> solution that would use VTK also for terrain rendering. I took a look to
> vtkGeoView and vtkGeoTerrain classes, which already implement a
> multiresolution scheme. I just couldn't figure out how to get from DEM files
> to correct data representation.
>
> - How to process DEM files to get proper vtkGeoSource geometry tiles?
> - Do I manage with elevation data and color map only, or do I need some
> texture file to cover earth surface?
> - It is possible to use vtkGeoView and vtkGeoTerrain to render terrain for
> smaller areas than the whole globe?
> - And I'd like to render in planar projection, not spheric, as GeoView
> currently. Possible?
>
> Some question to start with. I'm a bit confused...
>
> Thanks,
>
> Olli
>
>
I also had no idea how to use these classes. I made some shell examples -
maybe someone can get them working for Olli?

http://www.vtk.org/Wiki/VTK/Examples/Geovis/GeoView
http://www.vtk.org/Wiki/VTK/Examples/Geovis/GeoGlobeSource

Thanks,

David
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