See if Vector3 is in a Part

What I’m trying to do is generate a random Vector3 in a certain area, which I have done, then check if I can use that Vector3 If it is not in an exclusion zone. I manually created an exclusion zone using BaseParts around objects I want to exclude. My problem is when I supply a point, It will always return the same bool value even if it is or isn’t in any of the exclusion zones.

local ExcludedRegion = workspace.ExclusionZoneModel:GetChildren()
local function isInRegion3(region, point)
	local v3 = region.CFrame:PointToObjectSpace(point)
	return (math.abs(v3.X) <= region.Size.X / 2)
		and (math.abs(v3.Y) <= region.Size.Y / 2)
		and (math.abs(v3.Z) <= region.Size.Z / 2)

local function IsPointInExcludedRegion(Point)
--cycle through all the parts in the exclusion zone and see if the point is in them
	for i,Part in pairs(ExcludedRegion) do
		if isInRegion3(Part,Point) then
			return Point
	return false

1 Like

Look into this thread:

BuildThomas provides a way of going about checking whether a vector3 is in a region.

1 Like

I actually wrote a function for this the other day:

function IsPositionInPart(Position,Part) -- Vector3,Instance
	local RelPosition = Part.CFrame:PointToObjectSpace(Position)
	if math.abs(RelPosition.X) <= Part.Size.X/2 and math.abs(RelPosition.Y) <= Part.Size.Y/2 and math.abs(RelPosition.Z) <= Part.Size.Z/2 then
		return true
	return false

This function will check if a Vector3 is within the bounds of a part.

It looks basically identical to your function so I’d see no reason why your solution doesnt work, are you sure nothing is wrong with the physical parts themselves?


this would work for a block part but is there an easy way for it to work with wedges, cylinders, etc?