ArCore: How to restrict PlaneFindingMode to only v

问题:

I am new to ARCORE and Kotlin and trying a simple android-kotlin app that need to detect walls. I know Google's made it possible with PlaneFindingMode.VERTICAL tag, but I am not sure how to use it.

any help would be appreciated.

回答1:

Possible duplicate here but I'll answer it anyway.

This implementation is probably applicable to ARCore as well. But I tested this with SceneForm SDK

Setup the AR Session first and use an extension function to modify plane finding.

override fun onResume() {
    super.onResume()

    //Check if ARSession is null. If it is, instantiate it
    if(arSession == null) {
        arSession = Session(this@EdgeActivity)
        arSession?.setupPlaneFinding()
    }
}


// Setup plane detection
private fun Session.setupPlaneFinding() {

    //Create the config
    arConfig = Config(this)

    //Pause the session | Not sure if this is required for modifying plane detection. I was using this for something else, try & modify at your end
    pause()

    // Modify the plane finding mode
    arConfig?.planeFindingMode = Config.PlaneFindingMode.VERTICAL

    //Reinstate the session
    resume()

    //Sceneform requires that the ARCore session is configured to the UpdateMode LATEST_CAMERA_IMAGE. | I kept getting an exception if I remove this line. Again, this method is part of a bigger code, this particular line may not be required at your end. Try & Modify
    arConfig?.updateMode = Config.UpdateMode.LATEST_CAMERA_IMAGE

    //Reconfigure the session
    configure(arConfig)

    //Setup the session with ARSceneView | Very important
    fragment.arSceneView.setupSession(this)
}