[vtkusers] Generate trianglulated surface from heightmap

[Malcolm Drummond]

As Prabhu says, use the WarpScalar filter. Also use vtkTriangleFilter
instead of vtkDelauney2D - you have geometry from the
vtkStructuredPointsGeometryFilter, so you just need to decompose the
polygons.

----- Original Message -----
From: Dag Magne Ulvang <dagu at cmr.no>
To: <vtkusers at public.kitware.com>
Sent: Friday, June 01, 2001 11:23 AM
Subject: [vtkusers] Generate trianglulated surface from heightmap


>
> Hello.
>
> How do I generate a triangulated surface fro a heightmap (bmp or tiff
> image).
>
> I have tried something like
>
> vtkBMPReader bmpreader
>    bmpreader SetFileName heightmap.bmp
>
> vtkStructuredPointsGeometryFilter geometry
> geometry SetInput [bmpreader GetOutput]
>
> vtkDelaunay2D triangulering
> triangulering SetInput [geometry GetOutput]
>
>
> but I guess I create a flat structured grid ( or StructuredPoints)
> dataset with the heights as scalar values, but what I want to do is to
> convert the scalar value to a Z-value.
>
>
> --
> Dag Magne Ulvang
> Christian Michelsen Research AS
>
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