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标题: [转载]在U3D中生成Cubemap所需要的六面图 [打印本页]

作者: yeu1233 时间: 2012-8-23 14:19
标题: [转载]在U3D中生成Cubemap所需要的六面图

功能：生成Cubemap所需要的六面图

脚本命：SkyBoxGenerator.js

使用方法：脚本必须放置在项目文件中名为“Editor”的文件夹；该脚本将创建一个名为“Custom/Render Skybox”菜单。当选定会弹出一个对话框，设置一个渲染位置然后点击“Render”，并等待几秒钟，刷新项目窗口，生成的6张图片将出现在名为“Skyboxes”的文件夹。警告，每次运行这个脚本，它会覆盖以前生成的图像。

脚本内容：

class SkyBoxGenerator extends ScriptableWizard

{

var renderFromPosition : Transform;

var skyBoxImage = new Array ("frontImage", "rightImage", "backImage", "leftImage", "upImage", "downImage");

var skyDirection = new Array (Vector3 (0,0,0), Vector3 (0,-90,0), Vector3 (0,180,0), Vector3 (0,90,0), Vector3 (-90,0,0), Vector3 (90,0,0));

function OnWizardUpdate()

{

      helpString = "Select transform to render from";

      isValid = (renderFromPosition != null);

}

function OnWizardCreate()

{

      var go = new GameObject ("SkyboxCamera", Camera);



      go.camera.backgroundColor = Color.black;

      go.camera.clearFlags = CameraClearFlags.Skybox;

      go.camera.fieldOfView = 90;

      go.camera.aspect = 1.0;



      go.transform.position = renderFromPosition.position;



      if (renderFromPosition.renderer)

      {

         go.transform.position = renderFromPosition.renderer.bounds.center;

      }



      go.transform.rotation = Quaternion.identity;



      for (var orientation = 0; orientation < skyDirection.length ; orientation++)

      {

         renderSkyImage(orientation, go);

      }

      DestroyImmediate (go);

}

@MenuItem("Custom/Render Skybox", false, 4)

static function RenderSkyBox()

{

      ScriptableWizard.DisplayWizard ("Render SkyBox", SkyBoxGenerator, "Render!");

}

function renderSkyImage(orientation : int, go : GameObject)

{

go.transform.eulerAngles = skyDirection[orientation];

var screenSize = 1024;

var rt = new RenderTexture (screenSize, screenSize, 24);

go.camera.targetTexture = rt;

var screenShot = new Texture2D (screenSize, screenSize, TextureFormat.RGB24, false);

go.camera.Render();

RenderTexture.active = rt;

screenShot.ReadPixels (Rect (0, 0, screenSize, screenSize), 0, 0);



RenderTexture.active = null;

DestroyImmediate (rt);

var bytes = screenShot.EncodeToPNG();



var directory = "Assets/Skyboxes";

if (!System.IO.Directory.Exists(directory))

System.IO.Directory.CreateDirectory(directory);

System.IO.File.WriteAllBytes (System.IO.Path.Combine(directory, skyBoxImage[orientation] + ".png"), bytes);

}
}

文章转载于：http://u3dpro.com/read.php?tid=714

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