No curve boolean ?

Replies to This Discussion

Permalink Reply by RWNB on February 3, 2013 at 8:53am

http://www.grasshopper3d.com/forum/topics/random-colour-allocation?...

Permalink Reply by Daniel Fink on April 5, 2013 at 7:22am

A little late to this discussion but extremely helpful - Trevor over at Quotidien has implemented essentially a curveboolean tool that uses half-edge mesh data structures:

All is revealed here: http://codequotidien.wordpress.com/2012/08/15/half-edge-mesh-2/

Further posts look at offsets, depth-distance (a la space-syntax) and the straight-skeleton for any half-edge mesh. In all excellent work, and very commendable.

Permalink Reply by Olivier Suire on March 19, 2016 at 7:59am

4 years later : the same fellow.

I am really struggling to create boundaries based on sets of curves.

Rhino's Curve Boolean really sould be implemented in Grasshopper :

The "Surface split" component would just need extra inputs :

-Points to select regions

-A boolean to choose whether the selected regions should be merged or not.

Determining the useful points to select the proper region seems very easy compared to the trouble I have to go through presently to extract the boundary I want from the fragments resulting from "Surface split".

Has anyone found a more simple way to generate complex boundaries from curves ?

Cheers,

Permalink Reply by Olivier Suire on March 19, 2016 at 8:04am

Simple example...

Attachments:

• Region boolean.gh, 14 KB
• Curve Boolean.jpg, 44 KB

Permalink Reply by Olivier Suire on March 19, 2016 at 8:28am

OK, I managed to fake the region selection.

Still, I think this is a lot of spaghetti for a useful and simple task...

Attachments:

• Region boolean-Solved.gh, 15 KB

Permalink Reply by Pieter Segeren on March 19, 2016 at 11:13am

Hi Olivier, you could also try an alternative workflow. I've attached one possible different approach, but there's many ways to attack this.

Attachments:

• Regionboolean_Alt_PSG.gh, 22 KB

Permalink Reply by Olivier Suire on March 19, 2016 at 11:36pm

Hello Pieter,

Thanks.

Your variant works indeed with the present set of curves, 

By hacking the "Surface Split " component, my method tries to mimic Rhino's Curve Boolean so as to be more "universal".

I would really like to see a proper "Curve boolean" component in Grasshopper...

Permalink Reply by Juan Carlos Tellez Vera on March 15, 2017 at 8:07pm

hey guy.. nice job

Im interesting to try this app 

but  i need the password.. waht can i do to get this?

thanks!!!

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