AugmentedImageVisualizer.cs

//Ref: https://github.com/google-ar/arcore-unity-sdk
namespace GoogleARCore.Examples.AugmentedImage{
    using System;
    using System.Collections.Generic;
    using System.Runtime.InteropServices;
    using GoogleARCore;
    using GoogleARCoreInternal;
    using UnityEngine;

    public class AugmentedImageVisualizer : MonoBehaviour {
        public AugmentedImage Image;
        public GameObject FrameLowerLeft;
        public GameObject FrameLowerRight;
        public GameObject FrameUpperLeft;
        public GameObject FrameUpperRight;

        // added by Limes
        public GameObject toyPrefab;
        //
        public void Update() {
            if (Image == null || Image.TrackingState != TrackingState.Tracking) {
                /* 
                FrameLowerLeft.SetActive(false);
                FrameLowerRight.SetActive(false);
                FrameUpperLeft.SetActive(false);
                FrameUpperRight.SetActive(false);
                */
                toyPrefab.SetActive(false);
                return;
            }
            
             float halfWidth = Image.ExtentX / 2;
            float halfHeight = Image.ExtentZ / 2;
            toyPrefab.transform.localPosition = (halfWidth * Vector3.left) + (halfHeight * Vector3.back);
            toyPrefab.SetActive(true);
            /* 
            float halfWidth = Image.ExtentX / 2;
            float halfHeight = Image.ExtentZ / 2;
            FrameLowerLeft.transform.localPosition = (halfWidth * Vector3.left) + (halfHeight * Vector3.back);
            FrameLowerRight.transform.localPosition = (halfWidth * Vector3.right) + (halfHeight * Vector3.back);
            FrameUpperLeft.transform.localPosition = (halfWidth * Vector3.left) + (halfHeight * Vector3.forward);
            FrameUpperRight.transform.localPosition = (halfWidth * Vector3.right) + (halfHeight * Vector3.forward);
            FrameLowerLeft.SetActive(true);
            FrameLowerRight.SetActive(true);
            FrameUpperLeft.SetActive(true);
            FrameUpperRight.SetActive(true);
            */
        }
    }
}