WireFrame Rendering Script on Unity

WireFrame.cs

using UnityEngine;
using System.Collections;

public class Wireframe : MonoBehaviour {

	public Color lineColor; 
	public Color backgroundColor; 
	public bool ZWrite = true; 
	public bool AWrite = true; 
	public bool blend = true; 
	
	private Vector3[] lines; 
	private ArrayList linesArray; 
	private Material lineMaterial; 
	private MeshRenderer meshRenderer; 

	// Use this for initialization
	void Start () {
		GetComponent<Renderer>().enabled = false;
		meshRenderer = GetComponent<MeshRenderer>(); 
		if(!meshRenderer){
			meshRenderer = gameObject.AddComponent<MeshRenderer>(); 
		}
		meshRenderer.material = new Material("Shader \"Lines/Background\" { Properties { _Color (\"Main Color\", Color) = (1,1,1,1) } SubShader { Pass {" + (ZWrite ? " ZWrite on " : " ZWrite off ") + (blend ? " Blend SrcAlpha OneMinusSrcAlpha" : " ") + (AWrite ? " Colormask RGBA " : " ") + "Lighting Off Offset 1, 1 Color[_Color] }}}"); 
		
		// Old Syntax without Bind :    
		//   lineMaterial = new Material("Shader \"Lines/Colored Blended\" { SubShader { Pass { Blend SrcAlpha OneMinusSrcAlpha ZWrite On Cull Front Fog { Mode Off } } } }"); 
		
		// New Syntax with Bind : 
		lineMaterial = new Material("Shader \"Lines/Colored Blended\" { SubShader { Pass { Blend SrcAlpha OneMinusSrcAlpha BindChannels { Bind \"Color\",color } ZWrite On Cull Front Fog { Mode Off } } } }"); 
		
		lineMaterial.hideFlags = HideFlags.HideAndDontSave; 
		lineMaterial.shader.hideFlags = HideFlags.HideAndDontSave; 
		
		linesArray = new ArrayList(); 
		MeshFilter filter = GetComponent<MeshFilter>(); 
		Mesh mesh = filter.sharedMesh; 
		Vector3[] vertices = mesh.vertices; 
		int[] triangles = mesh.triangles; 
		
		for (int i = 0; i < triangles.Length / 3; i++) 
		{ 
			linesArray.Add(vertices[triangles[i * 3]]); 
			linesArray.Add(vertices[triangles[i * 3 + 1]]); 
			linesArray.Add(vertices[triangles[i * 3 + 2]]); 
		} 

		lines = new Vector3[triangles.Length];
		for ( int i = 0 ; i < triangles.Length ; i ++ ){
			lines[i] = (Vector3)linesArray[i];
		}
	}

	void OnRenderObject() 
	{    
		meshRenderer.sharedMaterial.color = backgroundColor; 
		lineMaterial.SetPass(0); 
		
		GL.PushMatrix(); 
		GL.MultMatrix(transform.localToWorldMatrix); 
		GL.Begin(GL.LINES); 
		GL.Color(lineColor); 
		
		for (int i = 0; i < lines.Length / 3; i++) 
		{ 
			GL.Vertex(lines[i * 3]); 
			GL.Vertex(lines[i * 3 + 1]); 
			
			GL.Vertex(lines[i * 3 + 1]); 
			GL.Vertex(lines[i * 3 + 2]); 
			
			GL.Vertex(lines[i * 3 + 2]); 
			GL.Vertex(lines[i * 3]); 
		} 
		
		GL.End(); 
		GL.PopMatrix(); 
	}
	
	// Update is called once per frame
	void Update () {
	
	}
}