Access to the attributes of an object

Hello everybody,

Despite a huge effort reading the forum and the documentation I can't write the function to access to the layer name of an object or other attributes.

Extract of my code :

Private Sub RunScript(ByVal mesh As Mesh, ByRef A As Object)

A = mesh.??? > which property to get layer name that contains the mesh

A = Rhino.ObjectLayer(strObjectID) but how to access to strObjectID ?

End Sub

Thanks for your help.

Michel

Replies to This Discussion

Permalink Reply by Florian Frank on April 24, 2013 at 3:34pm

Hi Mostapha,

Ok i didn't know that you're searching for python. I thought you had some other situation, where you couldn't get the GUID from a geometry.

Well in this case you can just use this:

import System.Guid as Guid

import Rhino

doc = Rhino.RhinoDoc.ActiveDoc

gid = Guid.Parse(x)

obj = doc.Objects.Find(gid)

a = doc.Layers[obj.Attributes.LayerIndex].Name

Permalink Reply by Mostapha Sadeghipour Roudsari on April 24, 2013 at 7:28pm

Hi Florian, Thanks again. This is what happens when I try it. I tired couple of different ways to pass x to Parse but it never worked.

Permalink Reply by Michel Cassagnes on May 2, 2013 at 4:38pm

Hi Florian,

Thank you for your help. I didn't known the ID component before your post ! So I looked for a lot to find how to retrieve the objects Id.

Regards,

Michel

Permalink Reply by Florian von Wey-Lübeck on March 16, 2015 at 4:39am

Genius, Alter, genuis! in nem 3-Zeier ich geh kaputt. Danke dir.

Permalink Reply by Florian Frank on April 25, 2013 at 2:17am

Hi Mostapha,

You cast the Mesh on the input to a string type...this will cause the value "Rhino.Geometry.Mesh" and not the desired guid. put the ID (which you show on the panel) to the string input of the python script ;-)

Permalink Reply by Mostapha Sadeghipour Roudsari on May 2, 2013 at 6:11pm

Thanks Florian! For some reason I totally forgot about this discussion! Thank you Michel to make it live again. So apparently I couldn't clearly explain my problem.

What I'm looking for is not to use the ID component and find the layer of the objects using GHPython. In C# component GUID type Hint just gave the same ID as ID component so one can find the object attributes as you did, however GHPython Component gives a different GUID for the same object, and the GUID changes each time that I ran the script.

Since this GUID is not the right ID/GUID of the object so I cannot use it to find the object attributes (When I try to find the object it returns no object which totally makes sense because it is not the right ID).

in the image below, you can see how the IDs from the Python component for the same objects are different from the C# and ID component:

Thanks,

Mostapha

Permalink Reply by Florian Frank on May 2, 2013 at 6:21pm

Hi Mostapha,

glad you came back ;-) As i said, you have to connect an ID containter to whatever geometry first, and then connect it to the python component as String.

Python works a little different than the native .net languages. The guid might come from GH rather than from Rhino, i don't know. It's definitely not the one from the Rhino Reference. You have to ask Steve if you want to know why.

But this works:

import System.Guid as Guid

gid = Guid.Parse(yourStringInput)

//Guid cast only with grasshoppers "ID" component that's safe ;-)

Best,

Permalink Reply by Mostapha Sadeghipour Roudsari on May 2, 2013 at 6:33pm

Hi Florian, thank you for the quick reply. :)
I agree that Steve can help.
I think I'll also take a look to GHPython source code when I get a chance.
I'll post it here if I find the solution.
Best,
Mostapha