Split line at intersection

Replies to This Discussion

Permalink Reply by Rémy Maurcot on November 14, 2012 at 10:28am

Hi Giudo

A problem related to the data structure.
Here is a sample result. At the intersection (CCX) to "flatten" be A or on B.

If you want to keep the data structure basis, review some false definition, May sc'est possible.

Rémy.

Attachments:

• GH_LineIntersection.gh, 12 KB

Permalink Reply by Guido Nieri on November 15, 2012 at 1:06am

Remy Thank you so much... it is what I was looking for... 

I have just a question... Is the fist time that I use clean tree button..

Why should I use it? 

Why the news are not in the same position?

Bye

Guido

Permalink Reply by Rémy Maurcot on November 15, 2012 at 3:13am

Giudo,

The clean tree remove data with null intersection.

If you would keep the data, you need to build a different GH definition.

Do you need help with the above.

Permalink Reply by Hannes Löschke on November 15, 2012 at 3:14am

GH will match lists with the same tree path and then match list items.

CCX intersects the ellipse with each line and puts the intersection points on an individual list for each line. Your horizontal and vertical lines are created in the same way and end up having the same tree structure.

GH will find a single horizontal line in A at the same path it finds a single vertical line in B. Both will intersect and give one point. GH will then move to the next branch in A and match a similar branch in B.

If you want to match/(intersect) each item in A to each item in B, either flatten both and use CrossReference or have one input in a tree that has a branch for each line and the other input in a flat list.

Now GH will parse each branch in A and match this to the List in B. According to LongestList behaviour, the single list item in A will be repeated (intersected with) each item in list B.

btw.: you can put your porizontal and vertical intersection points with the ellipse into a PLine and skip the sorting.

Permalink Reply by Guido Nieri on November 15, 2012 at 7:02am

Thank you Hannes now it is more clear to me...

Bye