[Gmsh] Curved Geometry Accuracy

[=?windows-1252?Q?Jean-Fran=8D=E7ois_Remacle?=]

Bernhard Kubicek a écrit :
> Hello!
> I would like to ask if there is exists a setting that controls the
> accuracy of the geometry display.
>
> After opening a step file containing lots of nurbs surfaces, e.g. a bent
> tube, things work quite nicely, but the whole thing seems to be divided
> into straight segments of tubes. Basically I would like to see more
> segments.
> Is there a setting or command for this
>
>   
Presently, there is no option for refining the triangulations that are 
used for representing the
geometry.

If you compile gmsh by yourself,  there is one function call in 
gmsh/Geo/OCCFace.cc

BRepMesh_FastDiscret aMesher(aDiscret, 0.5, aBox, bWithShare, Standard_True,
                               Standard_False, Standard_True);

that builds a fast triangulator. The second parameter can be lowered for 
getting a better
accuracy.

JFR


> Very nice greetings, 
> and thanks, 
>  Bernhard
>
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