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package | |
{ | |
import away3d.core.base.SubMesh; | |
import away3d.entities.Mesh; | |
import away3d.materials.TextureMaterial; | |
import away3d.textures.Texture2DBase; | |
import flash.geom.Rectangle; | |
import starling.textures.Texture; | |
import starling.textures.TextureAtlas; | |
/** | |
* ... | |
*/ | |
public class AwaySheet | |
{ | |
protected var _material:TextureMaterial; | |
private var _baseSheet:TextureAtlas; | |
public function AwaySheet(atlas:TextureAtlas) | |
{ | |
_baseSheet = atlas; | |
createAwayTexture(_baseSheet.texture); | |
} | |
private function createAwayTexture(tex:Texture):void | |
{ | |
var sharedTex:SharedTexture = new SharedTexture(tex); | |
_material = new TextureMaterial(sharedTex, true, false, false); | |
_material.animateUVs = true; // this has to be on for UV manipulation to work | |
_material.alphaBlending = true; | |
} | |
public function get atlas():TextureAtlas { return _baseSheet; } | |
public function get awayTexture():Texture2DBase { return _material.texture; } | |
public function get sharedMaterial():TextureMaterial { return _material; } | |
public function setupUV(mesh:Mesh, name:String):void | |
{ | |
if(mesh == null) | |
throw new ArgumentError("submesh cannot be null"); | |
var regionRc:Rectangle = _baseSheet.getRegion(name); | |
if(regionRc == null) | |
throw new ArgumentError("given region does not exist: " + name); | |
var submesh:SubMesh = mesh.subMeshes[0]; | |
var w:Number = _baseSheet.texture.width; | |
var h:Number = _baseSheet.texture.height; | |
submesh.offsetU = regionRc.x / w; | |
submesh.offsetV = regionRc.y / h; | |
submesh.scaleU = regionRc.width / w; | |
submesh.scaleV = regionRc.height / h; | |
} | |
} | |
} |
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