Intersection of multiple curves - sorting out points

Hey everybody!

I need help with lists!

I have the following:

a list of 6 rectangles flattened

a tree of 30 lines sorted out in 6 branches (one per rectangle)

intersection of the two =84 points which are now in 72 branches

I need the points to be in sorted out per line, that is.. 30 branches

what I actually need is to then cull the lines that have more than 2 intersections, maybe there is an easier way to do this?

Thank you very much for your help!!

Attachments:

utdt_eaeu_tesis_2017_modelo de desarrollo_ines verna_miranda goldschmidt_tomas meneghetti_gaston hermida4.gh, 101 KB

Replies to This Discussion

Permalink Reply by Hyungsoo Kim on May 31, 2017 at 2:53pm

Hi.

Check this and next time, it would be better to clean up your mess to narrow down your problematic part of the definition.

Attachments:

utdt_eaeu_tesis_2017_modelodedesarrollo_inesverna_mirandagoldschmidt_tomasmeneghetti_gastonhermida4_re.gh, 106 KB

Permalink Reply by Joseph Oster on May 31, 2017 at 4:12pm

Yeah, I agree with Hyungsoo Kim, that code is a huge mess! I won't even bother to try and understand what all that code is doing that ends up basically generating nothing more than six co-planar rectangles?!?!!??? Some bits of data clean-up were:

Ignore zero-length lines (points connected to themselves). When you connect six points to each other, there will be 30 lines total, not 36 - five lines from each point.
Ignore rectangles that aren't co-planar and can't possibly intersect.
Ignore duplicate lines (Hyungsoo skipped this one?). When connecting all points to each other, every line is duplicated with end points swapped. Visually, Hyungsoo's model shows ten lines but if you examine the data, there are twenty. Each line is duplicated, which may or may not be what you want?

Finally, it might be nice to have the twenty intersection points for those ten lines?

Permalink Reply by Joseph Oster on May 31, 2017 at 5:12pm

Here's another version that removes duplicate lines ('DupLns' cluster) and gets the twenty intersection points for those ten lines:

Attachments:

utdt_2017May31a.gh, 109 KB

Permalink Reply by ines on May 31, 2017 at 8:01pm

You rock!! This is exactly what I wanted!

Thank you so much

Sorry about the messy file, for sure will have it in mind for future reference!

Permalink Reply by ines on June 2, 2017 at 7:43pm

Hi again,

I've been playing around with your definition because I also need to cull the curve that intersects the other ones (the long one).. I can't seem to find the solution because they only intersect with the rectangles.

I was able to find the points that intersect, is there a way to select the curve closer to a point?

Thank you again!

Permalink Reply by Hyungsoo Kim on June 3, 2017 at 2:08am

Check this.

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