How to make LT2 style dragged part rotation

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#1

I want to mimic the way that LT2 handles dragged part rotation. Currently, the parts rotate by adding CFrame.Angles to a CFrame. Instead, I want to make the parts rotate based on the camera, like in LT2. I’ve tried messing around with CFrame:ToObjectSpace but I haven’t gotten any good results.


BTW, I’m using this model for the dragging.

#2

Use fromAxisAngle, but have the axis be based on what the camera is looking at. So left/right rotation rotates around the camera’s up vector, forward/back rotates around the right vector. You then need to multiply the part’s current rotation by this one.

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#3

This works but is there a way to make it more reliable? Right now it seems as if it rotates differently based on the rotation of the part you’re dragging. Sometimes the controls are flipped and such. Here’s the current code:

local RotateAmount = math.rad(2.5)
while wait() do
	if HoldingLShift then
		if CurrentOrien then
			local Angles
			--KeysDown = {W,S,A,D,Q,E}
			if KeysDown[1] == true then
				Angles = Camera.CFrame.RightVector
			end
			if KeysDown[2] == true then
				Angles = Camera.CFrame.RightVector * Vector3.new(-1,-1,-1)
			end
			if KeysDown[3] == true then
				Angles = Camera.CFrame.UpVector * Vector3.new(-1,-1,-1)
			end
			if KeysDown[4] == true then
				Angles = Camera.CFrame.UpVector
			end
			if KeysDown[5] == true then
				Angles = Camera.CFrame.LookVector * Vector3.new(-1,-1,-1)
			end
			if KeysDown[6] == true then
				Angles = Camera.CFrame.LookVector
			end
			if Angles then
				RotOffset *= CFrame.fromAxisAngle(Angles, RotateAmount)
			end
		end
	end
end