Ef 📐

The first improvement I’d suggest is generating the road by offsetting the polyline with a miter join which will give you proper corners instead of pieced rectangles. What engine are you using for rendering? In Unity the Shapes library already has this functionality built in

Definitely! I've seen this initiative before. very cool. The goal is definitely flexible infrastructure, not just cars. I’m actually a big fan of livable and walkable cities myself

Interesting concept. Would be killer to have some kind of visualisation if “Space Syntax” in City Builders

Yep, circle arcs are way more have way more cheaper math and look more real engineering like. But they have their own disadvantages.

Thanks! For now I don't even know what am I building. I was thinking some asset or a game and free asset. Yes, the math is in 3d but for now I am only using a 2d drawing library. I will be able to have linear road segments in 3d but in my approach intersections alwys need to be in the same plane.

After spending time building a procedural road system in Unity using only arcs, I realized this approach had already been explored years ago.

Great article by @redblobgames.com on curved paths. Excellent breakdown and very relevant to this kind of system:
www.redblobgames.com/articles/cur...

Nice work. How are intersections computed? I am working on a similar road system in Unity and dynamically generating the intersections was the harder task.

Neat work! Are you using bezier splines for the curved paths? I am developing a similar road system in unity and found that circle arcs work way better for roads.

The geometry is built using the brilliant Shapes library by @freya.bsky.social

I am writing a blog about roads at sandboxspirit.com/blog/art-of-...

• Since everything is either a line or a circular arc, intersection math is very cheap, and it runs well even on mobile

• Curves are true circular arcs, not Bézier curves — closer to real civil-engineering

• Roads are not node-based, so intersections happen dynamically at any point (not constrained in snapping to predefined nodes)

I am working on a Cities Skylines 2 style road system in Unity where intersections are created dynamically without nodes.