How to make part face in the opposite direction

Help and Feedback Scripting Support
1

Hello! For clarity, I’m not trying to make the part face the opposite of its lookvector. I’m trying to make it such that if a part is facing x degrees upwards, I can change it to face x degrees downwards. How would I do this?

(Refer to the below picture if ur confused sorry it’s a bit difficult to explain)

Direction
Direction1152×720 14.6 KB

(the arrow represents the direction the part is facing)

2

you can use CFrame:ToObjectSpace()

local FacingPart,TargetAnglePart,OppositeAnglePart = workspace.p1,workspace.p2,workspace.p3


local relativeRotation = FacingPart.CFrame:ToObjectSpace(TargetAnglePart.CFrame)
--flipping the CFrame (including rotation)
relativeRotation = relativeRotation:Inverse()
--removing the inverted Position from the CFrame
relativeRotation -= relativeRotation.Position


OppositeAnglePart.CFrame = FacingPart.CFrame * relativeRotation

3 Likes
3 
local Part1 = workspace:WaitForChild("Part1")
local Part2 = workspace:WaitForChild("Part2")

Part1:GetPropertyChangedSignal("CFrame"):Connect(function()
	local RotationX = if Part1.Orientation.X > 0 then math.abs(Part1.Orientation.X)*-1 else math.abs(Part1.Orientation.X)
	local RotationY = if Part1.Orientation.Y > 0 then math.abs(Part1.Orientation.Y)*-1 else math.abs(Part1.Orientation.Y)
	local RotationZ = if Part1.Orientation.Z > 0 then math.abs(Part1.Orientation.Z)*-1 else math.abs(Part1.Orientation.Z)
	
	Part2.CFrame = CFrame.new(Part2.Position) * CFrame.fromOrientation(math.rad(RotationX), math.rad(RotationY), math.rad(RotationZ))
end)