[Unity]文字が震えるエフェクト

Vibrate.cs

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using UnityEngine.UI;

// Unity5.3.4p4

namespace TSKT
{
    [RequireComponent(typeof(Text))]
    public class Vibrate : BaseMeshEffect
    {
        const float Interval = 0.067f;
        float lastModifiedTime = 0f;
        List<UIVertex> vertices = new List<UIVertex>();

        public override void ModifyMesh(VertexHelper vh)
        {
            if (!IsActive())
            {
                return;
            }

            vh.GetUIVertexStream(vertices);
            ModifyMesh(vertices);
            vh.Clear();
            vh.AddUIVertexTriangleStream(vertices);
        }

        void ModifyMesh(List<UIVertex> list)
        {
            for (int i = 0; i < list.Count; i+=6)
            {
                var distance = Random.insideUnitSphere * 4f;
                for(int j=0; j<6; ++j)
                {
                    var vertex = list[i + j];
                    vertex.position = vertex.position + distance;
                    list[i + j] = vertex;
                }
            }
        }

        Text text;
        Text Text
        {
            get
            {
                return text ?? (text = GetComponent<Text>());
            }
        }

        void Update()
        {
            if (Time.time - lastModifiedTime >= Interval)
            {
                lastModifiedTime = Time.time;
                Text.SetAllDirty();
            }
        }
    }
}