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. ChangeTexture(); } 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().material.mainTexture = Texture2; } } } I appreciate your looking ! ~be