[vtk-developers] interface elements

[Andreas Buykx]

The example you give describes very well the purpose of our interface elements. We insert such an element to model the discontinuity, and hence the element consists of two 'sides' each connected to one of the regular elements between which the discontinuity exists.

From: John Platt [mailto:jcplatt at dsl.pipex.com]
Sent: Tuesday, April 05, 2011 10:04 AM
To: Andreas Buykx; vtk-developers at vtk.org
Subject: Re: [vtk-developers] interface elements

Andreas,

You might like to consider creating separate unstructured grids for your elements depending on their visual display characteristics. For example, a mass element could be shown as a sphere with diameter proportional to the mass. Actors for each sub grid can then be added to a prop collection or assembly. You can also make each grid share the same points and point data even though they will be "oversize" for the sub grids. However, this does lead to greater programming complexity.

If any of your point data is discontinuous, for example, stress components between dissimilar materials, you should ponder this problem at an early stage.

John.
----- Original Message -----
From: Andreas Buykx<mailto:A.Buykx at tnodiana.com>
To: vtk-developers at vtk.org<mailto:vtk-developers at vtk.org>
Sent: Monday, April 04, 2011 1:38 PM
Subject: [vtk-developers] interface elements

Our finite-element application has 'interface elements' which are used to model discontinuities between 'conventional' elements. We would like to be able to visualize these as transparent elements with one or more lines connecting the sides of the interface element. For this we need to filter such elements and process them in a proper way. What would the preferred way of discriminating between interface and conventional elements be? Should we add a boolean attribute to each cell specifying whether it is an interface element?
Thanks,
Andreas Buykx
Senior Software Engineer
TNO DIANA BV
Software Developers and Analysis Consultants for Civil and Geotechnical Engineering
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