[osg-users] Speedup simplifire

Robert Osfield robert.osfield at gmail.com
Wed Jul 13 09:10:17 PDT 2016

Hi Christos,

The Simplifier was not written with goal of handling 32 million
triangles in a single mesh, and not written with performance as a
goal, it's goal has been as a basic tool for simplifying the types of
meshes normally handled by OSG end users as a pre-processing step when
speed to complete is not critical. The algorithm used is an iterative
edge collapse approach, this produces decent results but isn't the
fastest route one could take.

Handling really large meshes with a particular performance goal in
mind is not a straight forward task.  Being able to make assumptions
about nature of the data may well be crucial to choosing what
algorithm to use.  This topic isn't my area of expertise so I'll leave
it to others, or to your own research to determine what approach you
should take.


On 13 July 2016 at 14:49, Christos Chatzivagias <chatzich at gmail.com> wrote:
> Hi,
> I have a geometry with 32 milion trias and i run a simplifier in order to simplify it. It takes to long to simplify the mesh is there any techinque to speed up this process?
> ...
> Thank you!
> Cheers,
> Christos
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=68119#68119
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