Hello, I made this Road from Centerline script last year but had some problems… This script is not working for closed curves. Trying to solve it, the script easily gets big and reduces efficiency. Since this is dealing with complex road networks. Every computation power counts. Any idea how to r…

[image] Rguo2017: This script is made in Rhino 7 and needs at least Human and Elefront to run. Can you internalize stuff after your ‘trim tree’ component so you can get help without us having to install Human and Elefront? :grinning: *You’re also using Pufferfish, LunchBox, etc.

[image] René Corella: Can you internalize stuff after your ‘trim tree’ component JK, 'seems you’d have to internalize data prior to the pufferfish offset lol [image] Or, of course, wait for help from other plug-in enthusiasts :slight_smile:

Thank you, René! I forgot to do that… I simplified the script and internalized the data. All the components are grasshopper-native components now. Road_auto_intersect_by_layer 1.00 troubleshooting.gh (30.3 KB)

[image] Rguo2017: All the components are grasshopper-native components now. [missing] Except for Pufferfish. I worked around that (purple group) but the circles engulf everything, the roads inside disappear. [Road_auto_intersect_2024Feb8a] Road_auto_intersect_2024Feb8a.gh (38.7 KB)

Yeah? I can see the problem, don’t know the solution? Look further in the code to see how RUnion fails. [Road_auto_intersect_2024Feb8a2]

[image] Joseph_Oster: don’t know the solution? Same One approximate solution: Road_auto_intersect_2024Feb8a (2).gh (31.8 KB) [image] [image] Faster than RUnion but sacrifices resolution a bit - mesh quality can be bumped up, though - the fillets might be a bit shorter… *Another one wou…

If speed isn’t the top priority, Solid Union may be slow, but if you Merge Faces, you can avoid discretizing the curves. [image] [image]

:grinning: awesome! Forgot about *FMerge [image] Brian Washburn: If speed isn’t the top priority, LoL - 1.2 s … I love how anything above milliseconds is slow in gh world :rofl:

I resorted to SUnion too. Looks OK? [Road_auto_intersect_2024Feb8b] Road_auto_intersect_2024Feb8b.gh (27.4 KB)

Road from Centerline Script - closed curves and Region Union problem

Grasshopper

René_Corella (René Corella) February 9, 2024, 12:49am 16

lol so close but I quit for now - still discretized but just as shortcut to skip SUnion and RUnion…the actual ‘smooth’ curves were kept and shattered.

Road_auto_intersect_2024Feb8a (4).gh (43.8 KB)

@inno I think I invoked you

1 Like

Topic		Replies	Views
Get interior regions and exterior polycurve of a curve network Grasshopper windows , split , trim , offset , region-union	3	823	March 23, 2023
Optimise region union - find overlaps amongst multiple sets Grasshopper windows , region-union , sets	11	257	May 12, 2025
Region Union Grasshopper windows , rhino7	11	866	October 7, 2025
Region Union Fail: It's always the donut! Grasshopper	6	2525	August 11, 2018
How to take out the overlap parts of curves Grasshopper rhino , grasshopper , rhino6	15	3671	September 5, 2019

Road from Centerline Script - closed curves and Region Union problem

Related topics