Sceneform SDK for Android was open sourced and archived (github.com/google-ar/sceneform-android-sdk) with version 1.16.0.
This site (developers.google.com/sceneform) serves as the documentation archive for the previous version, Sceneform SDK for Android 1.15.0.
Do not use version 1.17.0 of the Sceneform Maven artifacts.
The 1.17.1 Maven artifacts can be used. Other than the version, however, the 1.17.1 artifacts are identical to the 1.15.0 artifacts.

PinchGestureRecognizer.OnGestureStartedListener

public static interface PinchGestureRecognizer.OnGestureStartedListener

Interface definition for a callbacks to be invoked when a PinchGesture starts.

abstract void

onGestureStarted(PinchGesture gesture)

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Last updated 2020-03-21 UTC.