Access/Set Grid properties via SDK?

Rhino Developer
#1

Is it possible to access/Set the grid properties voa the C++ SDK?

It is possible to access some proterties via DisplayAttrsMgrListDesc:

m_pAttrs->m_bUseDocumentGrid
m_pAttrs->m_bDrawGrid
m_pAttrs->m_bDrawAxes

but I did not find settings like Grid line count, Grid line spacing etc.

#2

Moving to the developer category.
https://discourse.mcneel.com/c/rhino-developer

-Pascal

#3

Hi @Peter_Salzman,

A viewport’s grid settings are stored on every viewport’s ON_3dmConstructionPlane object.

For example:

CRhinoViewIterator view_it(context.m_rhino_doc_sn);
CRhinoView* view = nullptr;
for (view = view_it.First(); nullptr != view; view = view_it.Next())
{
  ON_3dmConstructionPlane cplane = view->ActiveViewport().ConstructionPlane();
  cplane.m_grid_line_count *= 2;
  view->ActiveViewport().SetConstructionPlane(cplane);
}
context.m_doc.Redraw();

Does this help?

– Dale

#4

Hi Dale,
many thanks - that was what I was looking for. It seems so obvious now that I see it…

Best regards
Peter