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冷日 (冷日)	發表時間：2015/4/22 8:39
Webmaster 註冊日: 2008/2/19 來自: 發表數: 15773	[轉貼]Unity 4.6 UGUI 如何淡出（fadeout）？ making a fadeout with the new GUI in 4.6? I figured that making a fadeout transition with the new GUI system would be easy, my plan was: create a black panel (Image component) that fills the whole screen, control the alpha with a Mathf.Lerp and there! fadeout accomplished!.... the problem is, I have no idea how to access the alpha of the Image Component... is there a way to do that? or maybe an even easier way to do fadeouts/fadeins with this new Gui system? thanks in advance! You should use the gui element's color field. color.a represents the alpha value, so that's what you should change. Use a CanvasGroup component on the parent panel (not the Image), and fade the Alpha of that. `using UnityEngine; using System.Collections; public class GUIFadeScript : MonoBehaviour { public CanvasGroup fadeCanvasGroup; public IEnumerator FadeToBlack(float speed) { while (fadeCanvasGroup.alpha < 1f) { fadeCanvasGroup.alpha += speed * Time.deltaTime; yield return null; } } }` You have to have an image. I just used myImage as an example. You can get the image component by going `Image myImage = GetComponent<Image>(); myImage.color = new Color(0.0f, 0.0f, 0.0f, Mathf.Lerp(myImage.color.a, 0.0f, Time.deltaTime));` 原文出處：making a fadeout with the new GUI in 4.6? - Unity Answers
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