connect Rhino object into GH script via commandline or rhinoScript

Hi,

I'm pretty new to this and maybe this an easy one. I have a rhino file open, I have a set of curves. Now I need to connect those curves from Rhino to Grasshopper Curve Parameter. I need to do this inside rhinoScript.

How to do this?

I know that I have four curve parameters in Grasshopper named Crv1-Crv4, I have my array of curves in rhino scene, I can iterate them, get their ID, etc. I'm just completely lost on GH public API...

+ Is there some documentation for GH API accessible via rhinoScript?

Best regards,

Boris

Replies to This Discussion

Permalink Reply by David Rutten on May 8, 2013 at 7:22am

Come 0.9.0052 (I'll probably release it later today) the attached files will work.

David Rutten

david@mcneel.com

Poprad, Slovakia

Attachments:

Permalink Reply by Boris Zapotocky on May 8, 2013 at 8:30am

Thanks, David!

I've found guids of curve params in my .gh following this thread http://www.grasshopper3d.com/forum/topics/gh-assigndatatoparameter

My code is as follows:

Dim arrCurves
Dim j
arrCurves = Rhino.ObjectsByType(4)
If IsNull(arrCurves) Then Exit Sub
'prestored ids of curve params from GH (TODO, get them dynamically?)
Dim ids
ids = Array("6cc6333e-144a-4574-93ad-9f08aca393c6", "45740fae-c491-4567-8ff1-84e129a056d7", "d661791e-6128-4b5f-bcc5-a517fc5020a8", "28bbdd74-7ce7-4498-b293-153243eb099e")
For j = 0 to ubound(arrCurves)
rhino.print "slot " & j & " ID is " & arrCurves(j)
Call GH.AssignDataToParameter( ids(j), arrCurves(j) )
Next

There is no error, but no connection either, is there a way to debug this (some log, output)? As this method is recognized do I need to wait for 0.9.0052 or should it work with older releases?

This is the output of print method:

slot 0 ID is 8de68939-d951-4c52-b44c-153b1b8d388a
slot 1 ID is abb19855-e315-41fc-9765-c464a468e7a4
slot 2 ID is 3248fb21-45f3-42b0-b6d8-218e518cfe48
slot 3 ID is 70dab461-07ef-432e-9737-2fecbad65fab

so I guess my curves are selected and input into AssignDataToParameter method correctly?

Best regards,

Boris

Permalink Reply by David Rutten on May 8, 2013 at 9:28am

At the moment Grasshopper distinguishes between objects that implement IEnumerable and those that don'tin an attempt to figure out whether single items or lists ought to be assigned to a parameter. Unfortunately Strings are ienumerable collections of characters. Thus the assignment fails. I have fixed this, but you'l have to wait until 0.9.0052 is released.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Boris Zapotocky on May 8, 2013 at 11:48am

ok, thanks for fixing it! I will wait for next release.

Boris

Permalink Reply by David Rutten on May 8, 2013 at 1:26pm

It has been released about an hour ago.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Boris Zapotocky on May 8, 2013 at 2:47pm