FaceMesh.cs

// Copyright (c) 2021 homuler
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT.

// ATTENTION!: This code is for a tutorial.

using System.Collections;
using UnityEngine;
using UnityEngine.UI;


namespace Mediapipe.Unity.Tutorial
{
  public class FaceMesh : MonoBehaviour
  {
    [SerializeField] private RawImage _screen;
    [SerializeField] private int _width;
    [SerializeField] private int _height;
    [SerializeField] private int _fps;

    private WebCamTexture _webCamTexture;

    private IEnumerator Start()
    {
      if (WebCamTexture.devices.Length == 0)
      {
        throw new System.Exception("Web Camera devices are not found");
      }
      var webCamDevice = WebCamTexture.devices[0];
      _webCamTexture = new WebCamTexture(webCamDevice.name, _width, _height, _fps);
      _webCamTexture.Play();

      yield return new WaitUntil(() => _webCamTexture.width > 16);

      _screen.rectTransform.sizeDelta = new Vector2(_width, _height);
      _screen.texture = _webCamTexture;
    }

    private void OnDestroy()
    {
      if (_webCamTexture != null)
      {
        _webCamTexture.Stop();
      }
    }
  }
}