Adding objects from ghpython to RhinoDoc

Been puzzled with something related to ghdoc and RhinoDoc.

When I code in ghPython component, I am always targeting the ghdoc? Right? That means that if I want to add something to Rhino, I need to target the RhinoDoc?

Here is a small example of trying to add the sphere from ghpython component to RhinoDoc:

import rhinoscriptsyntax as rs
import Rhino
import scriptcontext as sc

sphere = Rhino.Geometry.Sphere(rs.coerce3dpoint([4,1,0]), 2.0)

if add:
    # target the Rhino Doc - why does this whole code work, even when I comment-out this line?
    #sc.doc = Rhino.RhinoDoc.ActiveDoc

    # add object to Rhino Doc?
    rc = sc.doc.Objects.AddSphere(sphere)

What I do not understand is why does the upper code work, even when I comment out this line:

sc.doc = Rhino.RhinoDoc.ActiveDoc

Isn't this line essential, as it quits targeting the ghdoc, and starts targeting the RhinoDoc? Or did I get all this wrong?

Thanks.

Attachments:

RhinoDoc.gh, 5 KB

Replies to This Discussion

Permalink Reply by Anders Holden Deleuran on January 29, 2014 at 6:14am

I think it is because you have already set scriptcontext.doc to Rhino.RhinoDoc.ActiveDoc once, without setting it back to ghdoc afterwards. Setting scriptcontext.doc is a persistent call, which sorta makes sense since you're fiddling with scriptcontext. Hope that makes sense?

Permalink Reply by Giulio Piacentino on January 29, 2014 at 6:35am

This is the reason. I would usually suggest to set back the variable to ghdoc, once you are done. This will have less possible side effects, but otherwise, just use this as you see fit!

Thanks,

Giulio

--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by djordje on January 29, 2014 at 7:08am