Zones and intersection

[svk-man]

Good afternoon!

I need to draw three polygons - outer and two inner ones. They can be edited.

All three polygons form zones. I marked them - 1, 2, 3.

I need to be able to switch between zones and look for the intersection of each of the zones with a moving point, for example, the mouse cursor.

Can you please tell me if your library will help me?

[alexbol99]

Hi, @svk-man ,

If you need to catch mouse events, you can use flatten-js together with s3, see notebook:
https://observablehq.com/@alexbol99/zones-and-intersection-39

If you question is about zone calculation, please give more details.

Best,
Alex