问使用全球定位系统在ARCore中渲染3D对象？

EN

private fun addPointByXYZ(x: Float, y: Float, z: Float, name: String) {
    ViewRenderable.builder().setView(this, R.layout.sample_layout).build().thenAccept {
        val imageView = it.view.findViewById<ImageView>(R.id.imageViewSample)
        val textView = it.view.findViewById<TextView>(R.id.textViewSample)

        textView.text = name

        val node = AnchorNode()
        node.renderable = it
        scene.addChild(node)
        node.worldPosition = Vector3(x, y, z)

        val cameraPosition = scene.camera.worldPosition
        val direction = Vector3.subtract(cameraPosition, node.worldPosition)
        val lookRotation = Quaternion.lookRotation(direction, Vector3.up())
        node.worldRotation = lookRotation
    }
}

private fun bearing(locA: Location, locB: Location): Double {
    val latA = locA.latitude * PI / 180
    val lonA = locA.longitude * PI / 180
    val latB = locB.latitude * PI / 180
    val lonB = locB.longitude * PI / 180

    val deltaOmega = ln(tan((latB / 2) + (PI / 4)) / tan((latA / 2) + (PI / 4)))
    val deltaLongitude = abs(lonA - lonB)

    return atan2(deltaLongitude, deltaOmega)
}

private fun placeARByLocation(myLocation: Location, targetLocation: LatLng, name: String) {
    val tLocation = Location("")
    tLocation.latitude = targetLocation.latitude
    tLocation.longitude = targetLocation.longitude

    val degree = (360 - (bearing(myLocation, tLocation) * 180 / PI))
    val distant = 3.0

    val y = 0.0
    val x = distant * cos(PI * degree / 180)
    val z = -1 * distant * sin(PI * degree / 180)
    addPointByXYZ(x.toFloat(), y.toFloat(), z.toFloat(), name)

    Log.i("ARCore_MyLat", myLocation.latitude.toString())
    Log.i("ARCore_MyLon", myLocation.longitude.toString())
    Log.i("ARCore_TargetLat", targetLocation.latitude.toString())
    Log.i("ARCore_TargetLon", targetLocation.longitude.toString())
    Log.i("ARCore_COMPASS", azimuth.toString())
    Log.i("ARCore_Degree", degree.toString())
    Log.i("ARCore_X", x.toString())
    Log.i("ARCore_Y", y.toString())
    Log.i("ARCore_Z", z.toString())
    Toast.makeText(this@LatLngActivity, "Compass: $azimuth, Degree: $degree", Toast.LENGTH_LONG).show()
}