Introduction to Unity Visual Scripting Part 10: Cooperation with STYLY For Vision Pro

This is the 10th article in the Visual Scripting Introduction series.

In this article, we’ll explain how to integrate Visual Scripting with STYLY for Vision Pro.

Download the sample scene that summarizes the features available in STYLY for Vision Pro.

Use Unity version 2022.3.27f.

This tutorial will show you how to grab an object and apply some effect to it.

Grabbing Objects with Visual Scripting

Open the downloaded project in Unity Hub.

Click the Add button.

Select the downloaded folder and click Open to open the project.

Click the + button at the bottom of the Project tab, select Scene, and create a new scene.

For this tutorial, name the scene [GrabScene].

Next, create the object to be grabbed. Click the + button in the Hierarchy, select 3D Object → Cube, and create a cube.

Name it [GrabCube] and add the XR Grab Interactable component.

XR Grab Interactable is a component that allows objects to be grabbed in the XR space.

This C# script is integrated with STYLY for Vision Pro, so you can use it directly.

Changing the Color of Grabbed Objects with Visual Scripting

XR Grab Interactable has many functions.

If you want to learn more about its features, refer to the Unity manual.

Open the Interactable Event section in the XR Grab Interactable component.

Click the + button for both Select and Select Exited, then drag and drop as shown below.

Click No Function, then select Script Machine → TriggerUnityEvent.

In Select, enter [StartGrab] as shown below.

For Select Exited, enter [ExitGrab].

Select triggers actions when the object is grabbed.

Select Exited triggers actions when the object is released.

Attach a Script Machine to the [GrabCube] object.

Change the Source to Embed.

Click Edit Graph to display the Script Graph.

Add the following nodes to the Graph Editor:

• UnityEvent
• Renderer Get Material
• Color Literal
• Set Color

Note: Images are provided for nodes that might be unclear.

Connect the nodes as shown below.

In the UnityEvent node, enter [StartGrab] as set in the XR Grab Interactable’s Select event. Set the Color to the color you want when the object is grabbed; in this case, it’s set to red.

Select all the connected nodes, and duplicate them by pressing Ctrl+D (or Cmd+D on Mac).

Similarly, enter [ExitGrab] in the UnityEvent node and set the Color to the color you want when the object is released. In this case, it’s set to white.

Uploading to STYLY for Vision Pro

In Unity, the Transform units are in meters. The current [GrabCube] might be too large, so resize it to a 30 cm cube.

The [GrabCube] has a RigidBody attached, so gravity will cause it to fall. To prevent this, create a base for it to sit on.

Create a new Cube in the scene and position it underneath the [GrabCube]. You don’t need to change its size.

When uploading multiple objects, group them together and create a Prefab.

Create an empty GameObject, name it [GrabPrefab], and move both the [GrabCube] and the base under it.

Drag and drop the [GrabPrefab] into the Project window to create a Prefab (you’ll see the icon turn blue).

Right-click on the Prefab [GrabPrefab] and select STYLY → Build prefab.

Your browser will open automatically.

After creating an account and logging in, you’ll see a screen like this. Click on [+ New content].

Set a title—[GrabColor] is used in this example.

Next, drag and drop the generated folder from the [_Output] folder within your project into the Select file section, then click Upload to finish.

All other settings remain at their default values.

This time, we introduced how to integrate Visual Scripting with STYLY For Vision Pro.