Changing GDIR from NEGZ to POSZ in SOFiSTiK Grasshopper Axis without breaking the model

SOFiSTiK Rhino
1

Hello everyone,

I’m currently working with the SOFiSTiK Grasshopper interface and ran into an issue regarding the global Z direction when defining an axis.

By default, when creating an axis in GH, the parameter GDIR is always set to NEGZ. I understand that this corresponds to the default gravity direction in SOFiSTiK, but as this is a German project I would like to work with POSZ instead.

However, if I manually switch GDIR to POSZ, the entire model effectively becomes inverted and inconsistent (geometry, orientations, etc.), which is not what I want.

What I am trying to achieve is:

  • Keep the geometry and model orientation as currently defined in Grasshopper (Z-up),

  • But change the global gravity direction (GDIR) to POSZ,

  • Without having to manually invert or rebuild the whole model.

Is there a proper way to define or override GDIR in Grasshopper so that POSZ can be used without breaking the model?

Many thanks in advance!

Ioannis