How do I find the centroid of 4 points in 3D space?

Questions & Answers
1

First a little background. I’m trying to define bounds for a 3D race track. I have 4 3D meshes that form a rectangular tube (It’s always going to be a rectangular shape). I’m casting rays from the character Up, Down, Left and Right.

	RaycastHit l = CastRay (m_FollowObject, Vector3.left);
	RaycastHit r = CastRay (m_FollowObject, Vector3.right);
	RaycastHit u = CastRay (m_FollowObject, Vector3.up);
	RaycastHit d = CastRay (m_FollowObject, Vector3.down);

Using the l.point, r.point, u.point, and d.point I want to find the centroid so that I can figure out where the center is to properly place the camera. Does anyone know how to do that?

2

c= Vector3((l.point.x + r.point.x )/2,(u.point.y+d.point.y)/2,m_FollowObject.position.z)

?