How can I determine if a coordinate point is inside of a plane? about arfoundation-samples

[tdmowrer]

@kenhuang1964

do I only have access to the anchor of the plane in the code or is there some way to access the whole plane if you know what I mean.

You can access the 2D boundary points with ARPlane.boundary.

If you want to know if an arbitrary point is inside the plane, you can use a point-in-polygon algorithm, see https://en.wikipedia.org/wiki/Point_in_polygon

AR Foundation supports raycasting against planes, which might also be useful to you: https://docs.unity3d.com/Packages/[email protected]/manual/features/raycasts.html

[andyb-unity]

Yep. You get center, extents, and a list of boundary points. https://docs.unity3d.com/Packages/[email protected]/api/UnityEngine.XR.ARFoundation.ARPlane.html#properties

[kenhuang1964]

Thank you @tdmowrer and @andyb-unity I really appreciate it! Happy new year!

[andyb-unity]

This is a math question. I recommend that you seek other resources on the internet to help you solve it. This question is unrelated to the AR Foundation API or the samples in this repo, so I'm going to close this issue.

[kenhuang1964]

Hey @andyb-unity, I think there is a little bit of misunderstanding. For the plane detection, do I only have access to the anchor of the plane in the code or is there some way to access the whole plane if you know what I mean.