ios - SceneKit: allow panning along X-axis and Y-axis for camera node -

the goal simulate camera in scenekit , let users pan camera's point of view panning screen.

the code below simulates camera panning in horizontal direction, how account simultaneous panning in vertical direction?

would concat rotation, altering x-axis , based on translation.y (to amount user panned vertically)? or there better way?

func dopan(sender: uipangesturerecognizer) {     // horizonal pan distance & convert radians     let translation = sender.translationinview(sender.view!)     var xradians = glkmathdegreestoradians(float(translation.x))      // rotate camera     xradians = (xradians / 20) + currentangle     cameranode.transform = scnmatrix4makerotation(xradians, 0, 1, 0)      // update preview block     setpreviewblock(cameranode.position)      // save value next rotation     if (sender.state == uigesturerecognizerstate.ended) {         currentangle = xradians     } } 

you can multiply rotation matrices new transform.

another approach use camera node's eulerangles property. transform, eulerangles, , orientation contgrol node's rotation, use different parameterizations.

see rotate scncamera node looking @ object around imaginary sphere thorough answer/explanation of camera rotations.

another approach rotate scene instead of moving camera. take @ scnaction, rotateby... , rotateto... functions.