AR Background

Background.cs

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

public class Background : MonoBehaviour {

    public WebCamTexture wtex;

    // Use this for initialization
    void Start () {
        if (WebCamTexture.devices.Length <= 0)
        {
            Debug.LogError("Cannot find a camera. ");
            return;
        }
        this.wtex = new WebCamTexture();
        wtex.Play();

        //tagでUIを表示するCameraを判断
        Camera cam = GameObject.FindGameObjectWithTag("BattleCamera").GetComponent<Camera>();

        Canvas canvas = transform.parent.GetComponent<Canvas>();
        canvas.renderMode = RenderMode.ScreenSpaceCamera;
        canvas.planeDistance = cam.farClipPlane-0.01f;
        canvas.worldCamera = cam;

        RawImage rawImage = GetComponent<RawImage>();
        rawImage.texture = wtex;
        //rawImage.SetNativeSize();

        RectTransform recTrans = GetComponent<RectTransform>();
        //recTrans.anchoredPosition = new Vector2(0.5f, 0.5f);
        float scale = ((wtex.width / wtex.height) > cam.aspect) ? ((float)cam.pixelHeight/wtex.width) : ((float)cam.pixelWidth / wtex.height);
        recTrans.sizeDelta = new Vector2(scale * wtex.width, scale*wtex.height);
        recTrans.Rotate(new Vector3(0, 0, -90));

        wtex.Stop();
    }
	
	// Update is called once per frame
	void Update () {

    }
}