SCNView build camera control has a function,double tap sceneview and roll back camera to start position when allowsCameraControl is enabled.
i went to add a button do the same thing
when user click the button i will roll back camera to start position
there is no class implement UIControl in scenekit
so i can't use sendAction
i can set camera position by scnView.pointOfView
but there is a animation when user scroll the camera, set camera position will fail when animation is running.
is there a good way to reset the camera ??
NicoS's answer effectively handles the part of your question about making a user action change the camera POV.
As for your issue with undesired animation when setting
pointOfView — you can control that animation (and any other implicit animations that happen when you change object properties) using the
SCNTransaction class. To make a change with no animation, just do this (Swift 3):
SCNTransaction.begin() SCNTransaction.animationDuration = 0 // perform your changes... view.pointOfView = newCameraNode // ...and anything else you want to happen in the same non-animated update, then... SCNTransaction.commit()