Copy a tree structure from one list to another

Hi everybody,

I've got a little problem regarding tree structure.

Concretely, I've got slabs defined by points and lines, then I move some of those points and want to rebuild those slabs by linking the moved points.

I've managed to rebuild my list by replacing the first value (initial points) by the new values (moved points), the problem is that the tree structure completely changed and I cannot redraw lines the same way I did with the former points.

The result should be that the planar slabs start to fold.

I don't know if this is clear but with the attached file it should be ok I guess.

The idea is that I want the tree structure in the panel on the far right hand side to be the same as the one just next to it.

If you need any precision just ask

Thank you!

Attachments:

Replies to This Discussion

Permalink Reply by David Stasiuk on May 12, 2013 at 3:54am

Use "unflatten".

Permalink Reply by simon fubar on May 12, 2013 at 3:57am

Hi David,

is "unflatten" a component? I cannot find it anywhere.

Permalink Reply by David Stasiuk on May 12, 2013 at 3:57am

Are you using 0.9.0053?

Permalink Reply by simon fubar on May 12, 2013 at 3:58am

No, it's 0.8.0065

Permalink Reply by David Stasiuk on May 12, 2013 at 4:00am

aha...well, the workaround will be a bit tricky, and I won't be able to save a file for you...but I'll put something together quick.

Permalink Reply by simon fubar on May 12, 2013 at 4:01am

Ok, thanks a lot.

I'm sorry I cannot simply update the version but it's on uni computers so I cannot install anything!

Thanks again

Permalink Reply by David Stasiuk on May 12, 2013 at 4:07am

So you basically take the data with the structure you want to impose on your flattened data set, and first clean it to remove any empty branches, then you graft it to get one data path per item. You also graft your data that you want to impose this structure on, and then use the parameter viewer to extract the path information from each. Then use the replace branches component...this will give you the grafted data structure, which you then just shift paths by one to the left, and you'll have your matching structure.

Permalink Reply by simon fubar on May 12, 2013 at 4:09am

Thank you very much, I'll just copy that quickly and see if it works.

Permalink Reply by simon fubar on May 12, 2013 at 4:17am

I've got an error at the "replace" step, could you have a look please?

I also cannot find exactly the same "clean" component (mine is D,X,E inputs instead of T,X,E), maybe that's where the problem comes from.

Attachments:

spatial deform for parasite volume part I V4 attract and repulse and distance from attractor points (working) and script 2 V1[autosave].gh, 27 KB

Permalink Reply by David Stasiuk on May 12, 2013 at 4:29am

The file you just attached is the same one as last time, so I don't see what changes you have made...but yes, the clean should be the same, despite the newer one having the "T" input and older one having the "DE input. The key is make sure that "E" is true...that one removes the empty branches, and your tree has one branch with zero items in it. You'll want to have equal numbers of data elements for "D" and path inputs for both the "S" and "R"

Permalink Reply by simon fubar on May 12, 2013 at 4:37am

(sorry I cannot answer your last comment directly, I don't have the "reply" button)

here is the file at the moment

I've made sure the E is true, and to me the script is the same, I don't see where it goes wrong. It is also weird I don't have as many defined values as you do!

Attachments:

spatial deform V3.gh, 30 KB

Permalink Reply by David Stasiuk on May 12, 2013 at 11:40am

I see...sorry, been running around today...you need to use the Param Viewer component to feed into the S and R inputs. What these do is extract the path data information...take a look again at the image I sent earlier. To get the Param Viewer either look in Params tab, or double click on the canvas and type in Param...