Quaternion rotation triggers change in Texture

Hello All

I have a stationary plane that faces the player

As the player moves around it (360 Degrees) I need the texture to change.

So it’s as if I had taken 16 pictures around an object, the texture would change relative to the players position and it would seem like a 360 “object”

Here is the C# code.
Rotations are working
Quaternions are moving
I just can’t track the numbers correctly to use if statements to control the texture switching.

using UnityEngine;
using System.Collections;

public class LookAt : MonoBehaviour {
	public Transform player;
// Here are the 16 textures I manually assign:
	public Texture Texture1;
	public Texture Texture2;
	public Texture Texture3;
	public Texture Texture4;
	public Texture Texture5;
	public Texture Texture6;
	public Texture Texture7;
	public Texture Texture8;
	public Texture Texture9;
	public Texture Texture10;
	public Texture Texture11;
	public Texture Texture12;
	// etc etc
		void Start() 
			player = GameObject.Find ("Player").transform;

		void Update() 
	// Plane faces the Player
			Vector3 v3 = player.position - transform.position;
			v3.y = 0.0f;
			transform.rotation = Quaternion.LookRotation(-v3);
	//  Sending the transform.rotation to the console in hopes of finding something I could use...
		Debug.Log (transform.rotation);
	// Calls the method fot changing texture.

		void ChangeTexture()
// What I want to do is every 20 degrees switch the texture
// if the plane is rotated 0 - 20 deg use texture 1
// if the plane is rotated 20 - 40 deg use texture 2 etc

		    if (transform.rotation.y != 0) {
			GetComponent<Renderer>().material.mainTexture = Texture2;	


I appreciate your looking !


Note for every 20 degrees, you need 18 images. You should put them in an array. You can get the index by:

 float angle = Mathf.Atan2(Camera.main.transform.forward.y, Camera.main.transform.forward.z) * Mathf.Rad2Deg;
 int index = angle / imageCount;
 renderer.material.mainTexture = textures[index];

…where ‘imageCount’ is the number of images in your array.