[Gmsh] Creation of simple surface mesh

[Christophe Geuzaine]

Hi Florian,

This is a nice test-case for our new remeshing pipeline. It's still quite experimental, but you can give it a try with the latest development snapshot: just open the attached .msh file, which contains a mesh of the bunny as well as an underlying parametrization. You can remesh this file simply by selecting the algorithm ("Frontal-Delaunay" in the attached picture) and the mesh size you want (e.g. by double-clicking in the window and changing the global mesh size factor).

Nothing about the new remeshing features is documented yet, but feel free to play around with it and report your findings ;-)

Christophe

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> On 29 May 2019, at 15:25, Florian Lindner <mailinglists at xgm.de> wrote:
> 
> Hello,
> 
> I have an existing surface geometry, which is the Stanford bunny [1] as PLY format.
> 
> My goal is too evaluate a mapping algorithm on a non-trivial geometry. The algorithm works only on point data, therefore I don't need an triangulation.
> 
> From the existing surface data I want to generate sampled points of various densities on the surface of the geometry and save these as a standard data format (e.g. VTK).
> 
> As I want to generate different mesh sizes, I need something like a background mesh size or a characteristic length which controls the sampling frequency. The exact placement of the points is not important, it should "make sense", i.e. be roughly equidistant or maybe influenced by the curvature.
> 
> So far I have only Merge "bun_zipper.ply"; in my .geo file. 
> 
> I think you can feel, that I am very uncertain how to progress and I would be very happy for guidance!
> 
> Thanks!
> Florian
> 
> 
> [1] http://graphics.stanford.edu/pub/3Dscanrep/bunny.tar.gz
> 
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? 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine