Data management and rewrite problem

I have this very strange problem, which has never occurred to me before, I have a datatree that I am looping through and then if a certain "if" statement is met then I add an object to a predetermined branch. The weird part is that when I add stuff to the "trail" branch, the path "p" gets rewritten, and if I comment(trail) out it maintains its proper structure.

The structure normaly goes{0;0}-{1;0}-{2;0} and so on, when I enter the if statement it should be {0;0}-{0;1}-{1;0}-{1;1}-{2;0}-{2;1}, but what I get is {0;0}-{0;1}-{0;2}-{0;3}-{0;4}-{0;5}

The code in question is bellow(it is a part of a bigger whole).

For i As int32 = 0 To trail.BranchCount - 1 For j As int32 =0 To trail.Branch(i).Count - 1 Dim ghi As GH_Path = trail.path(i) Dim v As Vector3d = vL.Branch(i).item(j) Dim pw As New Polyline(trail.Branch(i).item(j)) Dim agent As New point3d(pw.Last) Dim p As New GH_Path(ghi(0), ghi(1) + 1) v.Unitize v *= seg agent += v If (count Mod math.Ceiling(conrate * div) = 0) AndAlso _

(stopper.Branch(i).item(j) = 0 AndAlso count > 0) Then print(p.ToString) Dim dupPw As New polyline duppw.Add(pw.Last) duppw.Add(pw.Last + v * seg) vl.Add(v, p) gen.add(gen.Branch(i).item(j) + 1, p) stopper.add(0, p) stopper.Branch(i).item(j) = 1 trail.Add(duppw, p) Continue For End If pw.Add(agent) vl.Branch(i).item(j) = v trail.branch(i).item(j) = pw Next Next

I am looking foreward to hear any suggestions.

Sincerely

Replies to This Discussion

Permalink Reply by David Rutten on August 23, 2011 at 1:43am

Hi Jens,

you're going to have to post something that actually runs, ideally the simplest case that reproduces the problem. I can't work out from this where the problem might be.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Jens Pedersen on August 23, 2011 at 4:25am

I have now attached a verison with the problem, I have added small comments here and there, so I hope that it makes sense.

Looking foreward to hear from you again

Permalink Reply by Jens Pedersen on August 23, 2011 at 7:13am

Hey David.

I found a solution now.

The main problem was that I didn't quite get how the datatrees structures them selfs, but I sure as hell do now, after dealing with this problem for the past 24 hours...

So enjoi your holidays(i am guessing you are having a holiday based on the "support absence" message).

- Jens

Permalink Reply by Jens Pedersen on August 23, 2011 at 4:27am

the files

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