leejunkim

Vuforia + Unity

2 min read

Setup

  • Website
    • Download Vuforia for Unity package on the website
    • My Account > Plan & Licenses > Basic Plan > Generate basic license
    • Copy the key
  • Unity
    • Open any 3D project in Unity
    • Import the downloaded package to Unity project folder (just drag and drop)
    • Delete the Main Camera and add Vuforia’s AR camera
      • GameObject > Vuforia > AR camera
      • Click AR camera > Vuforia Behavior > Open Vuforia Engine Configuration > Global > paste the license key
    • Change build settings (ex. Android)

Image Targets

  • Vuforia Website
    • My Account > Target Manager > Add Database
      • Type - Device, name it whatever
    • Go to the generated database and add images
      • png gives Wrong_Color_Model error, but if you use jpg/jpeg it works
      • use a image compressor
      • You can click “Show Features” under the images
    • Download the database
  • Unity
    • GameObject > Vuforia > ImageTarget - create new ImageTarget
      • ImageTargetBehavior Script > change type “From Image” to “From Database”
    • Import the unity package into unity project
    • Under database dropdown list, you can select the image from database
    • You have to place child gameobjects that you want to view when image is tracked under ImageTarget
    • Under VuforiaConfiguration > PlayMode
      • You can change PlayMode Type and Camera Device
      • PlayMode Type - Webcam: Using Simulator window, you can use ur pc’s webcam
    • If using Android
      • Change build settings to Android
      • Project Settings > Player
        • Scripting Backend: to IL2CPP
        • Target Architectures: ARMv7 and ARM64
        • Identification > Minimum API level: Android 8.0 ‘Oreo’ (26)

BLACK SCREEN ERROR

  • Using Unity 2022.3.4f1
  • Project Settings > Other Settings > Rendering > Add OpenGLES2
    • Change necessary settings to low quality to build successfully

영상 띄우기

  • Unity docs
  • ImageTarget gameobject
    • Plane gameobject
      • VideoPlayer component
      • VideoController script
public class VideoController : MonoBehaviour
{
    VideoPlayer videoPlayer;
    void Start()
    {
        videoPlayer = GetComponent<VideoPlayer>();
        if (videoPlayer == null)
        {
            Debug.Log("videoPlayer null!");
        } 
    }
 
    public void OnTargetFound()
    {
        videoPlayer.Play();
    }
 
    public void OnTargetLost()
    {
        videoPlayer.Stop();
    }
}

Play Button

  • Under ImageTarget gameobject
    • OnTargetFound()
      • Button - GameObject.SetActive
    • OnTargetLost()
      • Plane - VideoController.OnTargetLost
  • Canvas - World Space
    • Button’s OnClick
      • Button - GameObject.SetActive(unchecked)
      • Plane - VideoController.OnTargetFound

Tutorial list

Graph View