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Question by Fezpin · Jul 17, 2018 at 04:14 PM · lightingwebcamtexturecolor32

how can i measure the light level entering my webcam

Hi, im a semi novice coder and this is my first time asking a question because i cant find the answer anywhere.

im making an android game that uses the light entering the camera to effect some gameplay. I need to make a bar that goes up or down to represent the level of light entering my device camera , im using a webcam texture, and thought that i could use the color date it produces, but i dont know how to get that data, or how to use it to change the bar's size. my script looks like this:

{ private bool camAvailable; private WebCamTexture frontCam; private Texture defaultBackground; public Color32[] camLight; public RawImage background; public AspectRatioFitter fit;

 private void Start()
 {
     defaultBackground = background.texture;
     WebCamDevice[] devices = WebCamTexture.devices;
     if (devices.Length == 0)
     {
         Debug.Log("no camera detected");
         camAvailable = false;
         return;
     }
     for (int i = 0; i < devices.Length; i++)
     {
         if (devices[i].isFrontFacing)
         {
             frontCam = new WebCamTexture(devices[i].name, Screen.width, Screen.height);
         }
     }
     if (frontCam == null)
     {
         Debug.Log("unable to find front camera");
         return;
     }
     frontCam.Play();
     background.texture = frontCam;
     camAvailable = true;
     camLight = new Color32[frontCam.width * frontCam.height];

} private void Update() { if (!camAvailable)
return;

     float ratio = (float)frontCam.width / (float)frontCam.height;
     fit.aspectRatio = ratio;

     float scaleY = frontCam.videoVerticallyMirrored ? -1f: 1f;
     background.rectTransform.localScale = new Vector3(1f, scaleY, 1f);

     int orient = -frontCam.videoRotationAngle;
     background.rectTransform.localEulerAngles = new Vector3(0, 0, orient);
     frontCam.GetPixels32(camLight);
 }

}

it does access and display the camera but i cant figure out how to get the light level from it, any solutions would be greatly appreciated :>

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