Hi everyone,
Is it possible changing…
By using “Curve Boolean” but without manually selecting the regions?
If Curve Boolean can’t do it, does someone knows a script that can?
I think that it should be theoretically possible for Rhino to work it out automatically.
I am asking here since what i’m looking for is to get this working in GH eventually if possible.
Thank you,
Roy Z.
Perhaps this works for you.
gh_curve_boolean_union.gh (10.8 KB)
Note, I made this with Grasshopper in Rhino WIP. I hope it works ok in v5, too.
I think this will not keep the inner regions seperate. I used GH booleans for breps (surfaces) from the curves, then created the borders from the breps:
c.
In Rhino, you can call PlanarSrf on the curves, then testPlanarUnion, which is a test command so will not auto-complete, then DupBorder. testPlanarUnion uses the low level CurveBoolean code.
In Rhino you can also PlanarSrf to create surfaces from the curves, then BooleanUnion to create a single polysurface, then DupBorder to extract the border curve of the single polysurface. Difference from @chuck suggestion is BooleanUnion rather than testPlanarUnion.
If you use BooleanUnion, make sure results from PlanarSrf are all pointing the same way.
Thank you everyone! I am looking into your suggestions 
Clipper plugin has useful component, PolyBoolean .
curveboolean.gh (12.8 KB)
