Unity3d 相机指定图片渐入渐出

多米诺 · 发表于 2012-6-14 23:48

一，新建一个js脚本命名为FadeInOut.js
加入如下代码：

// FadeInOut
//
//--------------------------------------------------------------------
// Public parameters
//--------------------------------------------------------------------
public var fadeOutTexture : Texture2D;
public var fadeSpeed = 0.3;
var drawDepth = -1000;
//--------------------------------------------------------------------
// Private variables
//--------------------------------------------------------------------
private var alpha = 1.0;
private var fadeDir = -1;
//--------------------------------------------------------------------
// Runtime functions
//--------------------------------------------------------------------
//--------------------------------------------------------------------
function OnGUI(){
alpha += fadeDir * fadeSpeed * Time.deltaTime;
alpha = Mathf.Clamp01(alpha);
GUI.color.a = alpha;
GUI.depth = drawDepth;
GUI.DrawTexture(Rect(0, 0, Screen.width, Screen.height), fadeOutTexture);
}
//--------------------------------------------------------------------
function fadeIn(){
fadeDir = -1;
}
//--------------------------------------------------------------------
function fadeOut(){
fadeDir = 1;
}
function Start(){
alpha=1;
fadeIn();
}

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把FadeInOut.js添加到你的摄像机下

二，然后自己做一个1x1像素，黑色背景的图像文件（例如PNG）
把该图像文件添加到FadeInOut中

三，想执行淡入淡出的时候只要执行
Camera.main.SendMessage("fadeOut");
或
Camera.main.SendMessage("fadeIn");
就可以了。

官方wiki（还包含C#版本）：
http://www.unifycommunity.com/wiki/index.php?title=FadeInOut

附件中的CameraTestScript.js是FadeInOut功能的执行程序，将它添加到一个自定义的GameObject中并按下左Ctrl键，看看效果吧^_^

多米诺 · 发表于 2012-6-14 23:50

var colorStart = Color.red;
var colorEnd = Color.green;
var duration = 1.0;
var minimum = 0.0;
var maximum = 200.0;
function Update () {
var lerp = Mathf.PingPong (Time.time, duration) / duration;
renderer.material.color = Color.Lerp (colorStart, colorEnd, lerp);
transform.position.x = Mathf.Lerp(minimum, maximum, lerp);
}

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如果是改变摄像机背景，将 renderer.material.color = Color.Lerp (colorStart, colorEnd, lerp);
更改为：camera.backgroundColor = Color.Lerp (colorStart, colorEnd, lerp);
绑定到摄像机上即可实现渐变效果

多米诺 · 发表于 2012-6-15 13:16

版本3：

var showGUI:boolean = true;
var alpha:float;
var gui_:GUISkin;
function Update()
{
if(showGUI)
{
FadeIn();
}
else {
FadeOut();
}
}
function FadeOut(){
// alpha = Mathf.Lerp(1,0,Time.time*0.2);// 用这句话也行让alpha 在Time.time*0.5 秒内值从1到0改变
alpha += -1 * 0.3 * Time.deltaTime;
alpha = Mathf.Clamp01(alpha);
GUI.color.a = alpha;
GUI.depth = -1000;
}
function FadeIn(){
alpha = Mathf.Lerp(0,1,Time.time*0.5);
}
function OnGUI(){
GUI.skin=gui_;
GUI.color.a = alpha;
if(GUI.Button(Rect(0,0,Screen.width,Screen.height),"Made by domino."))
{
showGUI=false;
}
}

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多米诺 · 发表于 2012-6-15 13:17

版本4：定点渐变

var showGUI:boolean = true;
var alpha:float;
var gui_:GUISkin;
var time_:float;
function Update()
{time_+=Time.deltaTime*2;
if(showGUI)
{
FadeIn();
}
else {
FadeOut();
}
print(time_.ToString());
}
function FadeOut(){
alpha += -1 * 0.5* Time.deltaTime;
alpha = Mathf.Clamp01(alpha);
}
function FadeIn(){
alpha += 1 * 0.5 * Time.deltaTime;
alpha = Mathf.Clamp01(alpha);
}
function OnGUI(){
GUI.skin=gui_;
GUI.color.a = alpha;
if(GUI.Button(Rect(0,0,Screen.width,Screen.height),"Made by domino."))
{
}
if(time_>5&&time_<=6)
{
showGUI=false;
}
if(time_>10&&time_<=11)
{
showGUI=true;
}
}

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多米诺 · 发表于 2012-6-15 13:18

版本5. DrawTexture渐入渐出

using UnityEngine;
using System.Collections;
public class New: MonoBehaviour {
private Texture2D txr;
private Rect rct;
void Start () {
txr = new Texture2D(10,10);
rct = new Rect(0, 0, Screen.width, Screen.height);
Color[] clr = new Color[100];
for (int i = 0; i < clr.Length; i++)
{
clr[i] = new Color(0, 0, 0, 1);
}
txr.SetPixels(clr);
txr.Apply();
}
// Update is called once per frame
void Update()
{
}
void OnGUI()
{
GUI.DrawTexture(rct, txr);
if (GUI.Button(new Rect(10, 10, 100, 50), "show"))
{
StartCoroutine(showScene());
}
if (GUI.Button(new Rect(10, 70, 100, 50), "hide"))
{
StartCoroutine(hideScene());
}
}
IEnumerator showScene()
{
Color[] clr = txr.GetPixels();
while (txr.GetPixel(0, 0).a > 0)
{
for (int i = 0; i < clr.Length; i++)
{
clr[i].a -= Time.deltaTime;
}
txr.SetPixels(clr);
txr.Apply();
yield return new WaitForEndOfFrame();
}
}
IEnumerator hideScene()
{
Color[] clr = txr.GetPixels();
while (txr.GetPixel(0, 0).a < 1)
{
for (int i = 0; i < clr.Length; i++)
{
clr[i].a += Time.deltaTime;
}
txr.SetPixels(clr);
txr.Apply();
yield return new WaitForEndOfFrame();
}
}
}

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aaabbbsss12345 · 发表于 2014-5-8 15:52

好学习了学习了

tracylong2008 · 发表于 2014-6-11 16:40

不错不错不错{:soso__3922851084632044791_6:}

客串大师 · 发表于 2015-9-13 17:08

感谢楼主的无私分享！{:soso__11402694654016840197_7:}

pkl8577192 · 发表于 2017-2-15 19:03

很不错

lovehou922 · 发表于 2017-2-15 18:59

好帖就是要顶

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[特效] Unity3d 相机指定图片渐入渐出

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