How to toggle whether a branch is appended after another branch?

Hi, I want to toggle whether the in_2 will be merged with in_1 by the toggle state. Does anyone know how to merge to input tree with its own structure remained?

The "a = in_1 + in_2"does not work.

Any script language is OK, not limited to python.

Replies to This Discussion

Permalink Reply by David Rutten on September 19, 2012 at 2:29am

in_1.MergeTree(in_2)

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by X.Arthur.Ma on September 19, 2012 at 2:40am

Thanks for your reply.

It's my first time to use "Tree Access". So... how can I get the output? in_1 is Null, a = in_1.MergeTree(in_2) is Null...

Permalink Reply by David Rutten on September 19, 2012 at 11:16am

I don't get it. If you have two non-null DataTree instances and you want to merge them, use the MergeTree() method. If you only have one DataTree there is nothing to merge.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by X.Arthur.Ma on September 19, 2012 at 6:29pm

Well, the two trees each has 2 branches. I want the final tree have 4 branches. The MergeTree() will make the final one 2 branches with each double the children's number.

Though I use other method to accomplish the goal, I still want to here you advice.

Permalink Reply by David Rutten on September 20, 2012 at 5:59am

Ok, so you want to combine all lists in all trees and change the paths so they don't collide. In that case you're better off just making a new DataTree and appending the lists inside loops:

Dim tree As New DataTree(Of Object)
Dim idx As Int32 = -1

For i As Int32 = 0 To x.BranchCount - 1
idx += 1
tree.AddRange(x.Branches(i), New GH_Path(idx))
Next

For i As Int32 = 0 To y.BranchCount - 1
idx += 1
tree.AddRange(y.Branches(i), New GH_Path(idx))
Next

For i As Int32 = 0 To z.BranchCount - 1
idx += 1
tree.AddRange(z.Branches(i), New GH_Path(idx))
Next