Bezir3

using UnityEngine;
using System.Collections;
[ExecuteInEditMode]
public class Bezir3 : MonoBehaviour {

	public GameObject StartObject;
	public GameObject StartControlObject;
	public GameObject EndObject;
	public GameObject EndControlObject;

	public int PointsNum = 100;//Number of points between start pos and end

	public Color StartColor= Color.black;
	public Color EndColor =Color.black;

	private Vector3 StartPosition;
	private Vector3 EndPosition;
	private  Vector3 StartControlPosition;
	private Vector3 EndControlPosition;

	private LineRenderer lineRenderer;

	private Vector3[] positions; 
	// Use this for initialization
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
		if (!this.GetComponent<LineRenderer> ()) {
			lineRenderer = this.gameObject.AddComponent<LineRenderer> ();
			lineRenderer.material = new Material (Shader.Find("Particles/Additive"));
		}


		lineRenderer.SetVertexCount (PointsNum+2);
		lineRenderer.SetColors (StartColor, EndColor);

		SetEnds (ref StartObject,ref StartControlObject, "Start","StartControl");
		SetEnds (ref EndObject, ref EndControlObject,"End","EndControl");

		StartPosition = StartObject.transform.position;
		EndPosition = EndObject.transform.position;
		StartControlPosition = StartControlObject.transform.position;
		EndControlPosition = EndControlObject.transform.position;

		for(int i = 0 ;i<=PointsNum+1;i++){
			lineRenderer.SetPosition (i,CalculatePosition((float)i / (float)(PointsNum+1)));
		}

	}

	private Vector3 CalculatePosition(float t){
		return Mathf.Pow (1 - t, 3) * StartPosition
		+ 3 * Mathf.Pow (1 - t, 2) * t * StartControlPosition
		+ 3 * (1 - t) * t * t * EndControlPosition
		+ t * t * t * EndPosition;

	}
	private void SetEnds(ref GameObject obj,ref GameObject controlObj ,string objName,string controlObjName){
		if (!obj) {
			obj = GameObject.CreatePrimitive (PrimitiveType.Sphere);
			obj.name = objName;
			obj.transform.parent = this.transform;
			obj.transform.localPosition = Vector3.zero;
		}
		if (!controlObj) {
			controlObj = GameObject.CreatePrimitive (PrimitiveType.Sphere);
			controlObj.name = controlObjName;
			controlObj.transform.parent = obj.transform;
			controlObj.transform.localPosition = Vector3.zero;
		}
		LineRenderer lineRenderer  = obj.GetComponent<LineRenderer> ();
		if (!lineRenderer) {
			lineRenderer = obj.AddComponent<LineRenderer> ();
			lineRenderer.material = new Material (Shader.Find("Particles/Additive"));
			lineRenderer.SetWidth (0.1f, 0.1f);
		}
		lineRenderer.SetPosition (0,obj.transform.position);
		lineRenderer.SetPosition (1,controlObj.transform.position);
	}
}