[vtk-developers] how to create a progressive mesh with vtkDec imatePro

[Lorensen, William E (Research)]

US5966133: Geomorphs and variable resolution control of progressive meshes 
Inventor: Hoppe, Assignee: Microsoft
Issue Date: October, 1999
Method simplifying arbitrary initial mesh with several connected vertices -
involves performing edge collapse transformation on chosen edge to give
simpler mesh where pair of vertices connected by edge is replaced by
transformation with single vertex  

-----Original Message-----
From: Will Schroeder [mailto:will.schroeder at kitware.com]
Sent: Wednesday, October 13, 2004 11:07 AM
To: matthias specht; vtk-developers at vtk.org
Subject: Re: [vtk-developers] how to create a progressive mesh with
vtkDecimatePro


Matthias-

The DecimatePro class has been hamstrung to some extent because there is a 
strong suspicion that the progressive portion of the algorithm has been 
patented by Microsoft. In the past I personally asked the inventor (Hugues 
Hoppe) if this is true, but he was not in a position to reply one way or 
the other. It's something that needs checking into, which I have not had 
the time to do lately.

Will


At 11:26 AM 9/29/2004, matthias specht wrote:
>hello,
>I want to construct a progressive mesh out of my triangle mesh.
>In the description if vtkDecimatePro the words "...it is set up generate 
>progressive meshes, that is a stream of operations that can be easily 
>transmitted and incrementally updated..." confuses me a lot. It seems that 
>vtkDecimatePro temprarily constructs a progressive mesh to reduce the mesh 
>to the desired reduction level.
>But what I want is each (incremental) step of the reduction process (i.e. 
>all edge collapses), not just one intermediate reduced mesh!
>
>if somebody could tell me how to use vtkDecimatePro to construct a 
>progressive mesh or has a piece of source which does that it would be 
>highly appreciated. Or if I missunderstood things completely please tell 
>me... :)
>
>thanks
>
>matthias
>
>
>--
>matthias specht
>| mailto:specht at ifi.unizh.ch  http://www.ifi.unizh.ch/staff/specht
>office
>| multimedia lab, computer science department, university of zurich
>| winterthurerstr. 190, 8057 zurich, switzerland
>| phone +41-1-635-4565 fax +41-1-635-6809
>
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