/**
* Copyright leichtgewicht ( http://wonderfl.net/user/leichtgewicht )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/pUL0
*/
/**
* Modified code from Lee Brimelow posted here : https://plus.google.com/110495278155587072613/posts/U8oXcET3TE9
*
* Performance example of using .copyPixels to draw a animation.
*/
package {
import flash.display.StageQuality;
import flash.utils.describeType;
import flash.display.LoaderInfo;
import flash.display.Bitmap;
import flash.system.LoaderContext;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.system.Security;
import flash.display.Loader;
import flash.net.URLRequest;
import flash.display.Sprite;
import flash.geom.Rectangle;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.display.BitmapData;
import net.hires.debug.Stats;
[SWF(frameRate=60)]
public class CopyPixelsAnimationExample extends Sprite
{
// Holds all current blit sprites
private var animations:Vector.<BitmapDataAnimation> = new Vector.<BitmapDataAnimation>();
private var numAnimations:int = 0;
public function CopyPixelsAnimationExample()
{
Security.loadPolicyFile("http://assets.wonderfl.net/crossdomain.xml");
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
stage.quality = StageQuality.MEDIUM;
// WonderFl Specific loading
var imageLoader: Loader = new Loader();
imageLoader.contentLoaderInfo.addEventListener( Event.COMPLETE, init );
imageLoader.load( new URLRequest( "http://assets.wonderfl.net/images/related_images/a/aa/aa1e/aa1e38cac5ca15481f555e095be7e4f0c86ac3fa" ), new LoaderContext(true) );
}
private function init(e:Event):void
{
// Initializes the sprite sheet frames
SnakeData.init(Bitmap( LoaderInfo(e.target).content ).bitmapData);
// You gotta track that shit
addChild(new Stats());
// Start with 50, good to compare
addAnimations(50);
// When you click the stage you get 10 more
stage.addEventListener(MouseEvent.CLICK, onClick);
addEventListener(Event.ENTER_FRAME, loop);
}
protected function onClick(event:MouseEvent):void
{
// Create another 10 more
addAnimations(10);
}
protected function addAnimations(amount:int):void
{
for(var i:int=0; i<amount; ++i)
{
var s:BitmapDataAnimation = new BitmapDataAnimation(SnakeData.sheet, SnakeData.rects, SnakeData.maxSize);;
s.x = Math.random() * stage.stageWidth;
s.y = Math.random() * stage.stageHeight;
addChildAt(s,0);
animations.push(s);
}
numAnimations = animations.length;
}
protected function loop(event:Event):void
{
// Loop through snakes and render them
for(var i:int=0; i<numAnimations; ++i)
{
var ani: BitmapDataAnimation = animations[i];
ani.rotation += 2.0;
ani.render();
}
}
}
}
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.geom.Rectangle;
import flash.geom.Point;
/* This class is generated from the JSON that was exported from Texture
Packer. It contains the rects for all the frames that are in the sprite
sheet. They are stored in a static vector. */
class SnakeData {
public static const maxSize:Rectangle = new Rectangle();
public static const rects:Vector.<Rectangle> = new Vector.<Rectangle>(20);
{
rects[0] = new Rectangle(0,0,106,62);
rects[1] = new Rectangle(106,0,104,62);
rects[2] = new Rectangle(210,0,104,64);
rects[3] = new Rectangle(314,0,102,64);
rects[4] = new Rectangle(0,64,100,64);
rects[5] = new Rectangle(100,64,100,64);
rects[6] = new Rectangle(200,64,100,64);
rects[7] = new Rectangle(300,64,100,64);
rects[8] = new Rectangle(400,64,98,66);
rects[9] = new Rectangle(0,130,100,64);
rects[10] = new Rectangle(100,130,100,66);
rects[11] = new Rectangle(200,130,100,66);
rects[12] = new Rectangle(300,130,100,66);
rects[13] = new Rectangle(400,130,100,66);
rects[14] = new Rectangle(0,196,102,64);
rects[15] = new Rectangle(102,196,102,64);
rects[16] = new Rectangle(204,196,104,64);
rects[17] = new Rectangle(308,196,106,64);
rects[18] = new Rectangle(0,260,106,62);
rects[19] = new Rectangle(106,260,106,64);
}
public static var sheet:BitmapData;
public static function init(data:BitmapData):void {
sheet = data;
var rect: Rectangle;
var i: int;
for( i = 0; i<rects.length; ++i){
rect = rects[i];
if( rect.width > maxSize.width ) {
maxSize.width = rect.width;
}
if( rect.height > maxSize.height ) {
maxSize.height = rect.height;
}
}
}
}
class BitmapDataAnimation extends Sprite
{
// Main Bitmap
private var bm:Bitmap;
private var sheet:BitmapData;
private var size:Rectangle;
// The rects of all of the frames
private var framesRects:Vector.<Rectangle>;
// Keeps track on current frame
private var frame:uint;
private var frames:uint;
private const p:Point = new Point();
public function BitmapDataAnimation(sheet:BitmapData, framesRects:Vector.<Rectangle>, size:Rectangle)
{
this.framesRects = framesRects;
this.sheet = sheet;
this.size = size;
mouseEnabled = false;
mouseChildren = false;
frame = Math.random()*frames;
frames = framesRects.length;
// Setup main bitmap
bm = new Bitmap(new BitmapData(size.width, size.height));
bm.x -= size.width * 0.5;
bm.y -= size.height * 0.5;
bm.smoothing = true;
addChild(bm);
}
public function render():void
{
// Determine what frame to show next
( frame == frames-1) ? frame = 0 : ++frame;
bm.bitmapData.lock();
bm.bitmapData.fillRect(size, 0);
bm.bitmapData.copyPixels(sheet, framesRects[frame], p);
bm.bitmapData.unlock();
}
}