bbox.lua

local function bbox(part)
	local size = part.Size
	local inv = part.CFrame:inverse()

	local wx = size*inv.XVector
	local wy = size*inv.YVector
	local wz = size*inv.ZVector

	return Vector3.new(
		math.abs(wx.x) + math.abs(wx.y) + math.abs(wx.z),
		math.abs(wy.x) + math.abs(wy.y) + math.abs(wy.z),
		math.abs(wz.x) + math.abs(wz.y) + math.abs(wz.z)
	)
end