"Shatter" segments at their intersection points

Hello all!

I am trying to use the "shatter" function to split a series of segments at their intersection points. So first I use the function "Multiple curves" and then "shatter" them at the parameters resulting tb.

I have been trying to re-parametrize, flattening, grafting... but as you can see in the snapshot I posted, it misses to split the segments at a portion of the intersection points (the ones at the bottom right of the hexagons).

Can somebody help? I couldn't find many explanations on the "Shatter" command, and the ones on this blog have not helped... I don't fully understand how the command works, so somebody who does might be able to easily solve it.

I hope somebody out there has the answer :)

Attachments:

Grasshopper snapshot.jpg, 237 KB
Rhino snapshot.jpg, 296 KB

Replies to This Discussion

Permalink Reply by David Rutten on February 5, 2013 at 5:34am

Moved from FAQ into Discussion...

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by LauraGoARC on February 5, 2013 at 10:16am

sorry about that, I thought I had to specify a topic section.. I am new to the site... :)

Permalink Reply by Yoann Mescam (Systemiq) on February 5, 2013 at 6:24am

This is the way I am using MCX to shatter intersecting curves:

Note that if you have "isolated" curves, you have to ignore them, and self intersecting curves need to be "pre shattered".

Permalink Reply by LauraGoARC on February 5, 2013 at 10:38am

Hey Systemig!

thank you for your answer! I have tried it.. but here are points where it shatters with those parameters... have I missed something? :(

Sorry, you seem to know more about how this command works!

Let me know :)

Permalink Reply by Yoann Mescam (Systemiq) on February 5, 2013 at 10:56am

You probably need to flatten the output of Offset.

Or try attached file: (drag it on GH canvas and a new component should appear near Shatter)

Attachments:

ShatterInt.ghuser, 10 KB

Permalink Reply by LauraGoARC on February 13, 2013 at 5:15pm

gosh! I used the command you just sent me! IT WORKS!! thank you so much! I am actually taking a look at the "script imbedded within it"... just to see if I can understand where my mistake was :)

Again, thank you so much Systemig!!!

Permalink Reply by alex jenter on February 13, 2013 at 5:33pm

awesome systemiq, really useful for cleaning up messy offsets but also for finding the largest enclosed surface by random lines. nice one!

Permalink Reply by Yoann Mescam (Systemiq) on February 13, 2013 at 6:11pm

Thanks.

I am curious, how do you used it to find the largest enclosed surface ?

(I made another definition to find all surfaces defined by intersecting curves, using ShatterInt, but I needed Surface Split and a good amount of additional code)

Permalink Reply by alex jenter on February 17, 2013 at 11:21am

Hi Systemiq, i feel a bit nooby right now, just found out the lines don't even need to be shatterd for that, all you need to do is run them through a planarSurface component. Not sure how efficient this approach is, but it works.

Permalink Reply by Yoann Mescam (Systemiq) on February 17, 2013 at 4:36pm

Aaah I didn't know either, always used this component with simple closed curves. I didn't think it could handle intersecting stuff and naked vertices like that.

Good to know.

Permalink Reply by Claudia on October 5, 2014 at 9:51am