[BUG] Surf file read incorrectly

Hello,

I noticed a bug when importing surf files into Netgen. The z-coordinates of all points seem to be multiplied by 10. This can be seen when importing a surf file using the GUI and visualising it, or when calculating the bounding box of an imported surf mesh. The coordinates in the surf file are what I would expect them to be, so this has to be something that happens when the file is imported.

Moreover, when I try to convert an imported mesh to an ngsolve mesh, I get the error "netgen.libngpy._meshing.NgException: mesh with negative boundary-condition number" even if the surf file was originally exported from Netgen.

I am using the nightly build NGSolve-6.2.2009-24-g53c262fa.

I am attaching two scripts which should reproduce this problem. The script export.py will generate a cube, mesh it, print the bounding box and export the surface mesh as a surf file. The script import.py will import the generated surf file and calculate the bounding box.

Cheers,

Rohit

Hi,
thanks for reporting, fix is in the pipeline and should be in the nightly release on Monday.
Best
Christopher

Hello Christopher,

I'm not sure if the fix was already released in the nightly versions this week, but I still have the same problem in version 6.2.2009-99-gd54c2c08b

Sorry, yes the Netgen update was missing in NGSolve, will be in the nightly version tomorrow.

Hello Christopher,

It works in today's nightly. Thank you for the quick fix!

Cheers,

Rohit