Use beginBitmapFill with existing movieclip/shape? (Animate CC) - actionscript-3

Question

All the tutorials for using beginBitmapFill seem to center around dynamically drawing an object. Is it possible to simply apply a bitmap fill to an existing shape that's inside a movieclip? I know I can do this manually by selecting the shape and selecting a bitmap in the Color panel.. but is it possible to do it with code? This is what I'm trying and it's not giving errors, but it's also not working:
grl.tops.shapes.graphics.beginBitmapFill(new cubepattern(), null, true, false);

Answer 1

As others have commented, you can use readGraphicsData and drawGraphicsData respectively. It's even not over-complicated. Simply loop through the IGraphicsData of your desired shape, stop as soon as you've found an instance of the GraphicsBitmapFill class, create a new instance with another BitmapFill and finally apply the changes to the original shape.
Well, a picture is worth a thousand words.
Here's an example. This might seem a bit long but there's just a whole lot of code to prepare a shape and load images to be used as bitmap fills.
Set your eyes on the process() function.
package
{
import flash.display.Sprite;
import flash.display.Shape;
import flash.display.Graphics;
import flash.display.Loader
import flash.display.LoaderInfo;
import flash.display.IGraphicsData;
import flash.display.GraphicsBitmapFill;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.events.Event;
import flash.net.URLRequest;
import flash.utils.getQualifiedClassName;
public class Main extends Sprite
{
private var bitmapData1:BitmapData;
private var bitmapData2:BitmapData;
private var masterSprite:Sprite = new Sprite();
private var texturesLoaded:int = 0;
private var loader:Loader = new Loader();
public function Main():void
{
if (stage)
init();
else
addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
loader.load(new URLRequest("textureA.jpg"));
addChild(masterSprite);
masterSprite.x = masterSprite.y = 200;
}
private function onComplete(event:Event):void
{
switch (texturesLoaded)
{
case 0:
bitmapData1 = Bitmap(LoaderInfo(event.target).content).bitmapData;
loader.load(new URLRequest("textureB.jpg"));
break;
case 1:
bitmapData2 = Bitmap(LoaderInfo(event.target).content).bitmapData;
loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, onComplete);
drawStar();
process();
}
texturesLoaded++;
}
private function process():void
{
var tempShape:Shape = Shape(masterSprite.getChildAt(0));
var graphicsData:Vector.<IGraphicsData> = tempShape.graphics.readGraphicsData();
for (var a:int = 0; a < graphicsData.length; a++)
{
if (getQualifiedClassName(graphicsData[a]) == "flash.display::GraphicsBitmapFill")
{
var bitmapFill:GraphicsBitmapFill = new GraphicsBitmapFill(bitmapData2);
graphicsData[a] = bitmapFill; break;
}
}
tempShape.graphics.drawGraphicsData(graphicsData);
}
private function drawStar():void
{
var angles:Array = new Array(0, 36, 72, 108, 144, 180, 216, 252, 288, 324, 360);
var innerRadius:int = 40;
var outerRadius:int = 80;
var shape:Shape = new Shape();
shape.graphics.beginBitmapFill(bitmapData1);
shape.graphics.moveTo(0 + Math.cos(angles[a] * (Math.PI / 180)) * outerRadius, 0 + Math.sin(angles[a] * (Math.PI / 180)) * outerRadius);
for (var a:int = 0; a < angles.length; a++)
{
angles[a] -= 90;
if (a % 2 == 0)
{
shape.graphics.lineTo(0 + Math.cos(angles[a] * (Math.PI / 180)) * outerRadius, 0 + Math.sin(angles[a] * (Math.PI / 180)) * outerRadius);
}
else
{
shape.graphics.lineTo(0 + Math.cos(angles[a] * (Math.PI / 180)) * innerRadius, 0 + Math.sin(angles[a] * (Math.PI / 180)) * innerRadius);
}
}
shape.graphics.endFill();
masterSprite.addChild(shape);
}
}
}