Medial lines

[Andrea_Maffi]

Hi, i have a cad geometry and i want to get automatically the medial lines of the walls … I saw about this problem e tried some script but they don’t work…
What I have…

What I want…

Test_Medial Axis.gh (40.0 KB)

Someone can help me??

[laurent_delrieu]

Not very easy to test what you use without the curves !
It is better if you internalize the curve. We don’t need all the stuffs before the curves.

It is not exactly what you want but this script could help.

Old Town Roofs

@rhino16 @paul.metzger New Version, it works on example given, sometimes it outputs more geometry than number of roof but this is due to bad roof border. I mean very sharp angles that generates intersection at places not intended. Implementation is surely not bullet proof. I first take all roofs touching the ground then I union all parts. Then search for holes. Then put in holes geometries that were not used and not having a bounding box center coincident with a previous geometry. I also chan…

@Andrea_Maffi

they don’t work…

What does it mean. Tools are not meant to read what you have in Mind, and what you have in mind is not strictly medial axis !

Extract Centreline of polylines

There is quite better with Sand Dunes I am there now [image] [image] [image] center_lines_frompolylines_rectangles.gh (33.1 KB) Warning : Rhino tolerances are used so some errors could occurs if tolerances are too high or too low !!! [image] [image] [image] [image] [image] [script2]

[magicteddy]

This won’t cover all cases (in particular non straight walls) but maybe this is close enough for your request ?

Based on Brep Topology for the main idea.
Added line extension for walls that only have one interior edge.
Added final join on curve and split by horizontal/vertical if needed.

MedialAxis.gh (17.4 KB)