Light.intensity 强度

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	public float duration = 1.0F;
	void Update() {
		float phi = Time.time / duration * 2 * Mathf.PI;
		float amplitude = Mathf.Cos(phi) * 0.5F + 0.5F;
		light.intensity = amplitude;
	}
}

// Pulse light's intensity over time
//随时间改变光照强度
var duration : float= 1.0;
function Update() {
	// argument for cosine
	//余弦理论
	var phi : float = Time.time / duration * 2 * Mathf.PI;
	// get cosine and transform from -1..1 to 0..1 range
	//获取余弦，并将范围从-1~1变为0~1
	var amplitude : float = Mathf.Cos( phi ) * 0.5 + 0.5;
	// set light color
	//设置灯光颜色
	light.intensity = amplitude;
}