[Gmsh] Geometric scaling of STP files

[Billy Araujo]

Hi,

I have made some simple tests with Rhino and Gmsh and found out that
these settings work best:

http://www.mail-archive.com/gmsh@geuz.org/msg00230/rhino_iges.pdf

About the scaling of the models I have no idea. I think IGES and STEP
files have information about the unit system. Maybe that has something
to do with it.

Regards,

Billy.


On Wed, Apr 14, 2010 at 9:47 PM, Bill Milewski <bmilewski at aphysci.com> wrote:
> Hi,
>
>
>
> I recently started working with GMSH and have encountered odd behaviors
> related to scaling geometry imported from Rhinoceros CAD via STEP or IGES
> files.  I have not seen anything in the FAQ or Wiki related to these issues.
>
>
>
> Where is the default geometric scale factor set?  (I am using the GUI
> initially.)  The coordinates in the STEP file are consistent with my CAD
> model.  When I save GEO and MSH files from gmsh the coordinates all seem to
> be scaled by a factor of 1000 for one model.  However, for a second model
> the scale is correct.
> Does the Bspline algorithm handle non-uniform weights, repeated control
> points and multiple internal knots correctly?  I have a body of revolution,
> with singularities at the poles, that seems to behave in a funny way.
>
>
>
> Best regards,
>
>
>
> Bill
>
>
>
> Bill Milewski, Ph.D.
>
>
>
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