Mesh.normals 网格法线

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	public float speed = 100.0F;
	void Update() {
		Mesh mesh = GetComponent<MeshFilter>().mesh;
		Vector3[] normals = mesh.normals;
		Quaternion rotation = Quaternion.AngleAxis(Time.deltaTime * speed, Vector3.up);
		int i = 0;
		while (i < normals.Length) {
			normals[i] = rotation * normals[i];
			i++;
		}
		mesh.normals = normals;
	}
}

// Rotate the normals by speed every frame
//以speed速度每帧旋转法线

var speed = 100.0;

function Update () {
	var mesh : Mesh = GetComponent(MeshFilter).mesh;
	var normals : Vector3[] = mesh.normals;

	var rotation : Quaternion = Quaternion.AngleAxis(Time.deltaTime * speed, Vector3.up);
	for (var i = 0; i < normals.Length; i++)
		normals[i] = rotation * normals[i];

	mesh.normals = normals;
}