OndrejKunc
commented
4 years ago Hi @AlisiaNew , Sorry for the late response. I didn't have Xamarin tools installed at the moment so I wasn't able to dive into this issue earlier.
I played with the example code and I think what you are suggesting is already possible.
The SceneGestureRenderingResponder has property TouchManipulationMode which is either IsotropicScale or ScaleRotate. Default is IsotropicScale and it indeed doesn't let you pan with 2 fingers but it also disables rotation of your scene.
The second one is ScaleRotate. It allows you to do pan with 2 fingers but it also enables rotation which may not be what you want.
I already checked your PR #16 but I am not sure if this should be solved in TouchGestureRecognizer class. I haven't tested it yet but I think if we want to just add this pan with 2 fingers into IsotropicScale touch mode it should be solved in SceneGestureResponder (parent of SceneGestureRenderingResponder) in TouchGestureRecognizerOnPinch method because current TouchGestureRecognizer already sends all the info from pinch and pan gestures (even with 2 fingers) via OnPinch event.
Please let me know if I understand it correctly and TouchManipulationMode = TouchManipulationMode.ScaleRotate solved your issue, otherwise, I will test your PR and see if we can enable pan with 2 fingers in the IsotropicScale mode.
AlisiaNew
Thank you for the lightweight and easy to use library! Is there any chance you add a "pan-while-pinching" feature (or, in other words, pan with 2 fingers)? This would help a lot, because now I have to use a customized TouchGestureRecognizer to handle these two gestures when they happen simultaneously. I think it would be great if it was an optional feature, something like this:
if (infos.Length == 1 || PanWhilePinching) { // ... } if (infos.Length >= 2) // without 'else' { // ... }