EditorGUI.DrawTextureAlpha 绘制纹理通道


static function DrawTextureAlpha (position : Rect, image : Texture, scaleMode : ScaleMode = ScaleMode.StretchToFill, imageAspect : float = 0) : void

Parameters参数

  • position
    Rectangle on the screen to draw the texture within.
    屏幕上绘制纹理的矩形区域    
  • image
    Texture to display. // 显示的纹理
  • scaleMode
    How to scale the image when the aspect ratio of it doesn't fit the aspect ratio to be drawn within.
    当纹理的尺寸不适合这个区域时如何缩放    
  • imageAspect
    Aspect ratio to use for the source image. If 0 (the default), the aspect ratio from the image is used.
    用于源图片的纵横比。如果为0（默认），使用源图片的纵横比    

Description描述

Draws the alpha channel of a texture within a rectangle.

在矩形内绘制一个纹理的透明通道。

参见：GUI.color, GUI.contentColor

EditorGUI.DrawTextureAlpha 绘制纹理通道

Alpha texture in an Editor Window.
编辑器窗口中的通道Alpha纹理。

// Load a texture, display the texture, display its alpha channel and// show a preview of the inverted texture//加载并这个纹理，显示其Alpha通道，并显示该纹理的反向预览class EditorGUITextures extends EditorWindow {var texture : Texture2D;var invertedTexture : Texture2D;var showInverted = false;@MenuItem("Examples/Texture Previewer")static function Init() {var window = GetWindow(EditorGUITextures);window.position = Rect(0,0,400, 200);window.Show();}function OnGUI() {texture = EditorGUI.ObjectField(Rect(3,3,200,20),"Add a Texture:",texture,Texture);if(GUI.Button(Rect(208,3, position.width - 210, 20),"Process Inverted")) {if(invertedTexture)DestroyImmediate(invertedTexture);//Copy the new texture//复制新的纹理invertedTexture = new Texture2D(texture.width,texture.height,texture.format,(texture.mipmapCount != 0));for (var m : int = 0; m < texture.mipmapCount; m++)invertedTexture.SetPixels(texture.GetPixels(m), m);InvertColors();showInverted = true;}if(texture) {EditorGUI.PrefixLabel(Rect(25,45,100,15),0,GUIContent("Preview:"));EditorGUI.DrawPreviewTexture(Rect(25,60,100,100),texture);EditorGUI.PrefixLabel(Rect(150,45,100,15),0,GUIContent("Alpha:"));EditorGUI.DrawTextureAlpha(Rect(150,60,100,100),texture);EditorGUI.PrefixLabel(Rect(275,45,100,15),0,GUIContent("Inverted:"));if(showInverted)EditorGUI.DrawPreviewTexture(Rect(275,60,100,100),invertedTexture);if(GUI.Button(Rect(3,position.height - 25, position.width-6,20),"Clear texture")) {texture = EditorGUIUtility.whiteTexture;showInverted = false;}} else {EditorGUI.PrefixLabel(Rect(3,position.height - 25,position.width - 6, 20),0,GUIContent("No texture found"));}}function InvertColors() {for (var m : int = 0; m < invertedTexture.mipmapCount; m++) {var c : Color[] = invertedTexture.GetPixels(m);for (var i : int = 0 ;i < c.Length; i++) {c[i].r = 1 - c[i].r;c[i].g = 1 - c[i].g;c[i].b = 1 - c[i].b;}invertedTexture.SetPixels(c, m);}invertedTexture.Apply();}function OnInspectorUpdate() {Repaint();}}


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