Playing sound while watching to an object

Hello,

Our project is an Google Cardboard application. We created an sphere and put a photo on it.
The camera is inside the sphere and has two lenses for each eye.

I want to create a C# script to make an object make a sound when you look at it, via the camera.

This is our code now:

usingUnityEngine;
usingSystem.Collections;

publicclassbanaan : MonoBehaviour {

publicAudioClip[] audioClip;

voidStart ()
{
//hoifritsdoedingenhierdie@startmoetengebeuren
AudioSourceaudio = GetComponent<AudioSource>();
}

voidUpdate ()
{
//hoifritsdoedingenhierdieelkeframemoetengebeuren
}

voidOnMouseDown()
{
//hoifritsditiswhatsgonnahappenalsjekliktopdecube
Debug.Log ("sicke ouwe je hebt geklikt mad respect", gameObject);
PlaySound(0);
}

voidPlaySound(intclip)
{
//hoifritshierspeelthijdesoundaf
Debug.Log ("komtie", gameObject);
GetComponent<AudioSource>().clip = audioClip[clip];
GetComponent<AudioSource>().Play ();
}




}

Hopefully you can help me,

OptimistPruim

 

Firstly, please use code tags so we can read your code http://prntscr.com/9f7yjl
Secondly, I think you want to research Raycast and find the variation that suits you

Official tutorial:

 

You can use raycasts or you can check if the object is within the fustrum planes of the camera, depends on which is more suitable for your project. To use the fustrum method try something like this, keep in mind you need to tag one of the cameras as MainCamera, and this script is attached to the picture frame:

private bool visible;

void Update(){
if (GeometryUtility.TestPlanesAABB(GeometryUtility.CalculateFrustumPlanes(Camera.main), gameObject.GetComponent<Collider>().bounds))
{
visible=true;
}
else
{
visible=false;
}

if (visible) {
GetComponent<AudioSource>().clip.Play();
}

else{
GetComponent<AudioSource>().clip.Stop();
}
}