This experiment copies a fancy sprite into a BitmapData object with the draw routine. The copied Bitmap is then copied to a new Bitmap several times using the copyPixel routine in a loop.
/**
* Copyright nicotroia ( http://wonderfl.net/user/nicotroia )
* GNU General Public License, v3 ( http://www.gnu.org/licenses/quick-guide-gplv3.html )
* Downloaded from: http://wonderfl.net/c/hkxK
*/
package {
import flash.text.TextField;
import flash.filters.GlowFilter;
import flash.geom.Point;
import flash.geom.Matrix;
import flash.display.Bitmap;
import flash.geom.Rectangle;
import flash.display.BitmapData;
import flash.display.Sprite;
import flash.display.DisplayObject;
import flash.display.DisplayObjectContainer;
import flash.filters.BitmapFilter;
import com.demonsters.debugger.MonsterDebugger;
public class FlashTest extends Sprite {
private var bitmap:Bitmap;
private var bmd:BitmapData;
private var copyPixels:BitmapData;
private var copyBitmap:Bitmap;
public function FlashTest() {
// write as3 code here..
MonsterDebugger.initialize(this);
debug("start");
/*
CREATE INITIAL SPRITE
*/
var spriteSheet:Sprite = new Sprite();
spriteSheet.x = spriteSheet.y = 50;
//addChild(spriteSheet); //blitting!
//moral of the story: spriteSheet needs to be on the stage when processDisplayObjectContainer() runs...
//or fix the function.
var rect:Sprite = new Sprite();
rect.graphics.beginFill(0xff333333);
rect.graphics.drawRect(0,0,100,100);
rect.graphics.endFill();
rect.x = rect.y = 0; //this is no longer true for some reason.. //give room for filter or else draw will clip any negative top/left pixels
var glow:GlowFilter = new GlowFilter(0x666666, 1, 20, 20, 1, 1);
rect.filters = [glow];
spriteSheet.addChild(rect);
/*
COPY SPRITE WITH BITMAP_DATA DRAW
*/
bmd = new BitmapData( rect.getBounds(spriteSheet).width + rect.x + spriteSheet.x, rect.getBounds(spriteSheet).height + rect.y + spriteSheet.y, true, 0 );
var processedSpriteBounds:Rectangle = bmd.generateFilterRect(rect.getBounds(spriteSheet), glow);
bmd = new BitmapData( processedSpriteBounds.width, processedSpriteBounds.height, true, 0 );
bmd.fillRect(bmd.rect, 0xccffffcc);
bmd.draw(
spriteSheet,
//new Matrix(1,0,0,1, -processedSpriteBounds.x + spriteSheet.x, -processedSpriteBounds.y + spriteSheet.y ),
new Matrix(1,0,0,1, -processedSpriteBounds.x, -processedSpriteBounds.y ),
null,
null,
new Rectangle(0,0, processedSpriteBounds.width, processedSpriteBounds.height),
false
);
bitmap = new Bitmap(bmd, "never");
bitmap.x = 175, bitmap.y = 40;
addChild(bitmap);
/*
COPY BITMAP REPEATEDLY WITH COPY_PIXELS
*/
copyPixels = new BitmapData(stage.stageWidth, stage.stageHeight, true, 0);
//this will be our "particle canvas"
for( var i:uint = 0; i < 7; i++ ) {
var x:Number, y:Number;
//no math for me today
switch( i ) {
case 0 : x = 310, y = 40;
break;
case 1 : x = 40, y = 175;
break;
case 2 : x = 175, y = 175;
break;
case 3 : x = 310, y = 175;
break;
case 4 : x = 40, y = 310;
break;
case 5 : x = 175, y = 310;
break;
case 6 : x = 310, y = 310;
break;
}
copyPixels.copyPixels(
bitmap.bitmapData, //bmd,
bitmap.getRect(bitmap),
//rect.globalToLocal(new Point(x,y)), //NO!!!! this translates with the spriteSheet x,y
new Point(x,y),
null, null, true
);
} //endfor
copyBitmap = new Bitmap(copyPixels);
addChild(copyBitmap);
}
public function debug(string:*):void
{
MonsterDebugger.trace(this, string);
}
//decent helper function here: //issue with it because sprite needs to be on the stage for proper calculations..
//http://stackoverflow.com/questions/466280/get-bounds-of-filters-applied-to-flash-sprite-within-sprite
}
}