unity3d如何使线平滑

最近使用unity制作了绘图板的功能，不过线段绘制的时候一直不平滑，怎么使线段平滑呢？类似下图：

使用该代码即可返回平滑的点

//arrayToCurve is original Vector3 array, smoothness is the number of interpolations.      public static Vector3[] MakeSmoothCurve(Vector3[] arrayToCurve,float smoothness){         List<Vector3> points;         List<Vector3> curvedPoints;         int pointsLength = 0;         int curvedLength = 0;                  if(smoothness < 1.0f) smoothness = 1.0f;                  pointsLength = arrayToCurve.Length;                  curvedLength = (pointsLength*Mathf.RoundToInt(smoothness))-1;         curvedPoints = new List<Vector3>(curvedLength);                  float t = 0.0f;         for(int pointInTimeOnCurve = 0;pointInTimeOnCurve < curvedLength+1;pointInTimeOnCurve++){             t = Mathf.InverseLerp(0,curvedLength,pointInTimeOnCurve);                          points = new List<Vector3>(arrayToCurve);                          for(int j = pointsLength-1; j > 0; j--){                 for (int i = 0; i < j; i++){                     points[i] = (1-t)*points[i] + t*points[i+1];                 }             }                          curvedPoints.Add(points[0]);         }                  return(curvedPoints.ToArray());     }

使用方法：

//javascript/unityscript example #pragma strict var points : Vector3[];  var lineRenderer : LineRenderer; var c1 : Color = Color.yellow; var c2 : Color = Color.red;  function Start () {     points = Curver.MakeSmoothCurve(points,3.0);          lineRenderer.SetColors(c1, c2);     lineRenderer.SetWidth(0.5,0.5);     lineRenderer.SetVertexCount(points.Length);     var counter : int = 0;     for(var i : Vector3 in points){         lineRenderer.SetPosition(counter, i);         ++counter;     } }

参考地址：http://answers.unity3d.com/questions/392606/line-drawing-how-can-i-interpolate-between-points.html