In Flash, the BitmapData object can be used to store bitmaps in RAM, you can later draw them to a MovieClip using the beginBitmapFill() method.
How do you load an external bitmap file (.jpg) into a BitmapData object?
Even AS3 code would be helpful.
AS3 code to load a PNG and "get" its bitmapData
var bitmapData:BitmapData;
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
loader.load(new URLRequest("../lib/img.png"));
function onComplete (event:Event):void
{
bitmapData = Bitmap(LoaderInfo(event.target).content).bitmapData;
}
Refering to the first post by cotton.
Actually each image is a bitmap so all you need to do is
bitmapData = event.target.content.bitmapData
instead of
bitmapData = Bitmap(LoaderInfo(event.target).content).bitmapData;
taking from cotton and will, this will display the bitmap after it is loaded:
import flash.display.Bitmap;
import flash.display.BitmapData;
var bitmapData:BitmapData;
var bmVis:Bitmap;
var loader:Loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
loader.load(new URLRequest("put url here"));
function onComplete (event:Event):void
{
trace("loaded!");
bitmapData = event.target.content.bitmapData;
bmVis = new Bitmap(bitmapData);
this.addChild(bmVis);
}
You have to load the external file (.jpg) into a MovieClip and wait for it to load.
Then take a snapshot of the MovieClip that contains the external file, into your BitmapData object.
myBitmap = new BitmapData(myMC._width, myMC._height,true,0x00FFFFFF)
myBitmap.draw( myMC)
GUI phase:
Load the image into the library (file -> import -> library).
In the library browser, right-click and hit "properties", notice that it is X by Y pixels.
Open up the "advanced" tab.
Select "export for Action Script". Export as myImg
Actionscript phase:
import flash.display.BitmapData;
import flash.display.Bitmap; //needed?
..........
var myPic:BitmapData = new myImg(X,Y);
来源:https://stackoverflow.com/questions/702164/how-do-you-load-a-bitmap-file-into-a-bitmapdata-object