gistfile1.txt

//Creation of ViewRenderable
val shareButton =       ViewRenderable.builder()
                        .setVerticalAlignment(ViewRenderable.VerticalAlignment.TOP)
                        .setHorizontalAlignment(ViewRenderable.HorizontalAlignment.RIGHT)
                        .setView(view.getARFragment().context, R.layout.share)
                        .build()
                        
//Creation of ModelRenderable
val video       =       ModelRenderable.builder()
                        .setSource(view.getARFragment().context, Uri.parse("chroma_key_video.sfb"))
                        .build()
                        

//Adding Model to the scene | Extension method called on ParentNode
private fun Node.attachVideoNode(videoRenderable: ModelRenderable?) {
        //Show another anchor object
        val videoNode = Node()
        //Attach the new node with the node that this method was called on
        videoNode.setParent(this@attachVideoNode)
        //Set local position
        videoNode.localPosition = this.right //This works fine. The video is rendered next to another ModelRenderable.

        // Set the scale of the node so that the aspect ratio of the video is correct.
        val videoWidth = mediaPlayer?.videoWidth?.toFloat()
        val videoHeight = mediaPlayer?.videoHeight?.toFloat()
        videoHeight?.let {
            videoWidth?.apply {
                videoNode.localScale = Vector3(
                        (this@apply / it), 1.0f, 1.0f)
            }
        }

        // Start playing the video when the first node is placed.
        mediaPlayer?.apply {
            if (!isPlaying) {
                start()
                // Wait to set the renderable until the first frame of the  video becomes available.
                // This prevents the renderable from briefly appearing as a black quad before the video
                // plays.
                texture?.surfaceTexture
                        ?.setOnFrameAvailableListener { surfaceTexture ->
                            videoNode.renderable = videoRenderable
                            surfaceTexture.setOnFrameAvailableListener(null)
                            //Attach a share button
                            videoNode.attachShareButton()
                            ARApplication.log("The local rotation of this videoRenderable is ${videoNode.localRotation}")
                        }
            } else
                videoNode.renderable = videoRenderable
        }
    }
    
//Attaches a share button to any node that it is called on. | Extension method called on VideoNode
private fun Node.attachShareButton() {
        //Create a new node to display the close button
        var closeButton = Node()
        closeButton.setParent(this)
        ARApplication.log("The close button has been added to the scene at world coordinates: ${closeButton.worldPosition}")

        //Set the close button as a renderable
        closeButton.renderable = view.getViewRenderable()
}