C# group / ungroup

Hi,

How to group and ungroup objects using c#?

I would like to get the same output as group/ungroup components in grasshopper.

Thank you.

Replies to This Discussion

Permalink Reply by David Rutten on October 22, 2016 at 4:31am

You're talking about grouping objects in the Rhino document, or Grasshopper groups?

Permalink Reply by Tomas Vinkevicius on October 22, 2016 at 8:29am

Grasshopper, just like components group and ungroup

Permalink Reply by David Rutten on October 22, 2016 at 10:15am

Grasshopper grouping is something which only exists within the group object. Components themselves are unaware that there's even such a thing as a group.

To group a set of components you must create a new group object, then populate it with object ids.

Permalink Reply by Tomas Vinkevicius on October 22, 2016 at 11:53am

Does it mean that when I see this:

It does not come from the component?

But from the document?

Permalink Reply by David Rutten on October 22, 2016 at 12:05pm

Neither. Groups are objects in the document, and only the groups themselves know which other objects are contained within them.

Unfortunately I cannot test this now on my machine, as a change in this week's RhinoCommon library broke the script editor UI.

Permalink Reply by Andrew Heumann on October 22, 2016 at 4:45pm

I think he means GH_GeometryGroups not GH_Groups

Permalink Reply by David Rutten on October 22, 2016 at 4:52pm

Yeah you're right, I got confused early on and didn't consider the third typeof group we have in Rhino/GH... I really need to pick more unique names next time.

Permalink Reply by cughudson on February 13, 2017 at 10:46pm

Oh.....Sorry, But Could you tell me where is the GH_geometryGroups Class,I think I can't find the class on the Grasshopper SDK document

Permalink Reply by David Rutten on February 14, 2017 at 1:33am

I think it might be in the Transform.gha assembly. Not sure and can't check on from my iPad.

Permalink Reply by David Rutten on February 14, 2017 at 6:12am

It's in Grasshopper.Kernel.Types.GH_GeometryGroup.

A lot of namespaces have been omitted from the SDK docs, either because they are deemed no interesting to plug-in developers or, more likely, because they have not been documented.

Permalink Reply by cughudson on June 23, 2017 at 8:12pm

But If I want to lookup the content about the namespaces that has been ommitted in SDK docs, and the detail of the ommitted namespaces,Where I can find it? thanks

Permalink Reply by David Rutten on June 24, 2017 at 1:37am

But If I want to lookup the content about the namespaces that has been ommitted in SDK docs, and the detail of the ommitted namespaces,Where I can find it?

You can use Visual Studio Object Viewer to browse assemblies and see their documentation (if it exists).