Allen McPherson wrote:
> Olivier fillon wrote:
>
> > The data I get is not from a grid=> more like a cloud of surface points.
> > to solve this problem, the first step has to be a triangulation of the data
> > set ( I have used delaunay algo).
> > Then I been able to use j3d normal generator and stripifier.
> > For those interested, the results are much better than I even expected
> > (especially using jdk1.3 alpha!!)
>
> I'm glad to hear that the utility stuff is working well.
>
> As far as the triangulation, you're right. My mesh class
> does only the simplest (worst) triangulation of the data
> points--it uses all of them! For large numbers of points,
> interactivity is shot. A better solution would be to use
> a mesh decimation technique to reduce the number of triangles
> generated. I haven't checked around, but there may be some
> Java code to do this out there on the net somewhere.
>
If there is, I haven't been able to find it., and I've looked around a lot. I
would love to have some decimation code to use in NCSA Portfolio, particularly,
as you pointed out, for things like DEM files.
Steve
--
Steve Pietrowicz - [EMAIL PROTECTED] Project Manager - NCSA Java 3D Group
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