How to get the corners of a face

[purpledanx (daniel)]

How would I find the corners of any face I choose on a part?

Like if I choose the top face I would get all the positions of the corners on the top of the part.

The top front right, top front left, top bottom right, and top bottom left.

[Entildo (Fase)]

You should search on the forum before posting,

How to find corners of part?

I want to find corners of part but I dont know how. So I have a part in workspace and I know its position and size, and I need to find 8 corners positions like Vector3 values, but position and size are vector3 too. This is my part (the red and blue circles are corners I need to find positions of): [part] Thank you for any help.

[RoBoPoJu]

local function getAxisFromValue(value: number): Enum.Axis
	for _, axis: Enum.Axis in Enum.Axis:GetEnumItems() do
		if axis.Value == value then
			return axis
		end
	end
	error("No Axis EnumItem with this Value exists.")
end

local function getFaceCorners(part: Part, normalId: Enum.NormalId): {Vector3}
	local cornerPoints: {Vector3} = {}

	local normalAxisValue: number = normalId.Value % 3
	local normalAxis: Enum.Axis = getAxisFromValue(normalAxisValue)
	local otherAxis1: Enum.Axis = getAxisFromValue((normalAxisValue + 1) % 3)
	local otherAxis2: Enum.Axis = getAxisFromValue((normalAxisValue + 2) % 3)	
	for dir1Sign: number = -1, 1, 2 do
		for dir2Sign: number = -1, 1, 2 do
			local localSpaceCorner: Vector3 = .5 * (
				part.Size[normalAxis.Name] * Vector3.FromNormalId(normalId)
				+ dir1Sign * part.Size[otherAxis1.Name] * Vector3.fromAxis(otherAxis1)
				+ dir2Sign * part.Size[otherAxis2.Name] * Vector3.fromAxis(otherAxis2)
			)
			local worldSpaceCorner: Vector3 = part.CFrame * localSpaceCorner
			table.insert(cornerPoints, worldSpaceCorner)
		end
	end
	return cornerPoints
end

@Entildo , the thread you linked is about finding every corner of a part. The OP of this thread wants to find the corners of a spesific face.

[purpledanx (daniel)]

well thats only for the entire part, I want a face