Also, to make it more circular in the middle I had to adjust the angle between each string's start and end points based on the start point's normal angle to the wall. Unintuitive result.

Here's the sim placing strings based on raycasts.

I'm using this as a template to place nails in the real-life installation and tie a string between them.

...this is gonna take forever.

In Unity trying to plan out physical sculpture. Right now I'm trying to solve a double helix spiral made of strings that I'll be placing in a 10ft half of a shipping container.

Using a game engine as a 3D simulation sandbox is really handy.