Splitting Tree problem

Hi there,

after splitting a tree of vertices I am trying to select points 2 and 3 of all the surfaces as shown in the image.

For some reason the selection does only work for the first row or just the the first element of each column.

It would be great If someone could lead me into the right direction.

Thank you !!!

Attachments:

splitting_tree_issue.gh, 40 KB
splitting_tree_issue.jpg, 648 KB

Replies to This Discussion

Permalink Reply by Pieter Segeren on February 21, 2016 at 3:36am

Hi Findie,
splitting the tree is not the issue here: I think the creation of the surfaces is a bit off and the reason for random vertex positions. In the attachment is a way to make them differently.

B.t.w. "Bandung" is not a very usefull tag for your discussion.

Attachments:

splitting_tree_issue_PSG.gh, 40 KB

Permalink Reply by Findie on February 21, 2016 at 6:49am

Hi pieter,

thank you for taking the time to help me to solve the problem by suggesting an alternative way !!!

I needed some time to understand it though.

As i understand your algorithm (especially the surface creation)

You

1.create a point grid then

2.create polylines through the x points

3 shifting the list (but I guess the algorithm works without that step, please correct me if i am mistaken)

4.explode the polylines to get the individual polyline segments between the points.

5.Extrude the individual polyline segments into y direction by the difference value

The only thing I dont get is the W-Value (Wrap) of the shift list component.What is it for?

Regarding the tag

cause I just started in this forum I am honestly not really sure what it is for?!

so i just entered something ;)

Permalink Reply by Pieter Segeren on February 21, 2016 at 7:30am

I needed some time to figure out what you did there too Findie;)

I distrusted your ShInt-cluster because it resulted in unequal branch lengths. Then - to be able to understand it myself - I decided to only use your MD Sliders and start over.

You correctly discribed what I did! :)
(answer to 3: true, but you'd have an extra surface in each column.)

The ShiftLists (with Wrap set to False) are used to remove the first (S=-1) or last (S=1) item, because we didn't need these. To understand the ShiftLists component, best try it yourself with a simple list.

About the tag: it's for 'keywords', for example "pointgrid, list, vertex order, select", so you can search more effectively for this discussion. Well, at least you cared to fill in a tag ;)

Permalink Reply by Findie on February 21, 2016 at 10:02am

Oh ok.

Will use the tag differently now!

I know my stuff is not as neat as others but thanks to your help and others help

I learn something new ever day and progress.:))))

My approach was more like

1.creating a bunch of lines

2.find the intersection points

3.split the lines at intersections

4.create a boundary surface out of the lines

5.rotate the surfaces

Many thanks again!!!!!!