tapDistanceOfMultiplePoints.kt

    private fun tapDistanceOfMultiplePoints(hitResult: HitResult){
        if (placedAnchorNodes.size >= Constants.maxNumMultiplePoints){
            clearAllAnchors()
        }
        ViewRenderable
            .builder()
            .setView(this, R.layout.point_text_layout)
            .build()
            .thenAccept{
                it.isShadowReceiver = false
                it.isShadowCaster = false
                pointTextView = it.getView() as TextView
                pointTextView.setText(placedAnchors.size.toString())
                placeAnchor(hitResult, it)
            }
            .exceptionally {
                val builder = AlertDialog.Builder(this)
                builder.setMessage(it.message).setTitle("Error")
                val dialog = builder.create()
                dialog.show()
                return@exceptionally null
            }
        Log.i(TAG, "Number of anchors: ${placedAnchorNodes.size}")
    }