mouse delta

Unity Engine
1

Is there a built in way to get the mouse delta? I’m trying to get some rotation of the camera when the right mouse button is down, but currently I’m using something like:

if(Input.GetMouseButton(1))
{
camRotX += Input.GetAxis(“Mouse X”) * 2.0f;
camRotY -= Input.GetAxis(“Mouse Y”) * 2.0f;

Quaternion rot = Quaternion.Euler(camRotY, camRotX, 0);
cameraAnchor.transform.localRotation = rot;
}

which doesn’t work because the first time I do this it snaps the camera to a funky rotation because Input.GetAxis(“Mouse X”) returns the actual mouse position. Ideally I would only be using a mouse delta.

2

That is how you get the mouse delta, assuming Mouse X and Mouse Y are set to mouse movement in the input manager, and it works fine here. It doesn’t return the actual mouse position (that’s what Input.mousePosition is for).

–Eric

3

hmm, so why would my rotation go all crazy when I initially press the right mouse button? In Start() I set the camRotX and Y to the game object local rotation with

camRotX = cameraAnchor.transform.localEulerAngles.x;
camRotY = cameraAnchor.transform.localEulerAngles.y;

so the first time I press the right mouse button, those GetAxis() should return 0 if I don’t move my mouse, which should result in not adding anything to camRotX Y so which I set it back it should be the same rotation as the start of the game, but that’s not what’s happening.

4

Ah, nvm I see. I need to save the opposite x y in the Start(). Thanks!