FairyGUI.NGraphics.UpdateMesh C# (CSharp) Method

        public void UpdateMesh()
        {
            if (meshModifier != null)
                meshModifier();

            Vector3[] vertices = this.vertices;
            vertCount = vertices.Length;
            if (vertexMatrix != null)
            {
                Matrix4x4 mm = (Matrix4x4)vertexMatrix;
                Vector3 camPos = cameraPosition != null ? (Vector3)cameraPosition : Vector3.zero;
                Vector3 center = new Vector3(camPos.x, camPos.y, 0);
                center -= mm.MultiplyPoint(center);
                for (int i = 0; i < vertCount; i++)
                {
                    Vector3 pt = vertices[i];
                    pt = mm.MultiplyPoint(pt);
                    pt += center;
                    Vector3 vec = pt - camPos;
                    float lambda = -camPos.z / vec.z;
                    pt.x = camPos.x + lambda * vec.x;
                    pt.y = camPos.y + lambda * vec.y;
                    pt.z = 0;

                    vertices[i] = pt;
                }
            }

            Color32[] colors = this.colors;
            for (int i = 0; i < vertCount; i++)
            {
                Color32 col = colors[i];
                if (col.a != 255)
                {
                    if (_alphaBackup == null)
                        _alphaBackup = new byte[vertCount];
                }
                col.a = (byte)(col.a * _alpha);
                colors[i] = col;
            }

            if (_alphaBackup != null)
            {
                if (_alphaBackup.Length < vertCount)
                    _alphaBackup = new byte[vertCount];

                for (int i = 0; i < vertCount; i++)
                    _alphaBackup[i] = colors[i].a;
            }

            mesh.Clear();
            mesh.vertices = vertices;
            mesh.uv = uv;
            mesh.triangles = triangles;
            mesh.colors32 = colors;
            meshFilter.mesh = mesh;

            if (_stencilEraser != null)
                _stencilEraser.meshFilter.mesh = mesh;
        }

 static public int UpdateMesh(IntPtr l)
 {
     try {
         FairyGUI.NGraphics self = (FairyGUI.NGraphics)checkSelf(l);
         self.UpdateMesh();
         pushValue(l, true);
         return(1);
     }
     catch (Exception e) {
         return(error(l, e));
     }
 }