Re: combining a "mesh view" with a "surface view" of the same data

• To: Rupert Ford <rupert@xxxxxxxxxxxxxxxx>
• Subject: Re: combining a "mesh view" with a "surface view" of the same data
• From: Don Murray <dmurray@xxxxxxxxxxxxxxxx>
• Date: Wed, 13 Jun 2007 10:09:26 -0600

Hi Rupert-

Rupert Ford wrote:

Using the delaunaytest example as a guide I'm using a delaunaycustom to display the surface of a 3d unstructured mesh and a unionset of gridded3dset's to display the surface connectivity of the mesh. Separately these work fine. However when I try to display both the surface and the mesh connectivity (by having two separate datareferences) the mesh connectivity part gets very "patchy". Can anyone suggest a solution. Pictures of the surface, mesh, and surface+mesh views are attached.

How are you displaying the mesh - as a texture or as an isosurface?

Another way to do this would be to take your mesh and have two
data references with the same data.  On the second one, add in
a ConstantMap of DisplayImplJ3D.POLYGON_LINE to Display.PolygonMode
which will render it as a mesh. That should be the same mesh used for
the surface.  That might not clear up the patchiness, but is should
save you some work on making the data and ensure that the mesh is
the same.

As for the patchiness, you might want to play around with adding
another ConstantMap for the mesh that maps to
Display.PolygonOffsetFactor and/or Display.PolygonOffset and play around
with values to see if that makes a difference.  Others might have
suggestions on appropriate values.  Also, add a ConstantMap of 2 to
Display.LineWidth to fatten the lines.

Many thanks for any help.

Good luck!

Don
*************************************************************
Don Murray                               UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
*************************************************************


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• References:
  • combining a "mesh view" with a "surface view" of the same data
    • From: Rupert Ford