BitmapData
/**
* Copyright _shimizu ( http://wonderfl.net/user/_shimizu )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/61vM
*/
package {
import flash.filters.BlurFilter;
import flash.filters.DisplacementMapFilter;
import flash.geom.ColorTransform;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.events.Event;
import flash.display.Sprite;
import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.display.BitmapDataChannel;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.display.BlendMode;
[SWF(width=465,height=465,backgroundColor=0)]
public class BitmapDataSample extends Sprite {
private var bmpdata:BitmapData;
private var sprite:Sprite;
private var matrix:Matrix;
private var colortrans:ColorTransform;
private var bmpcolortrans:ColorTransform;
private var filter:DisplacementMapFilter;
public function BitmapDataSample() {
colortrans = new ColorTransform();
bmpcolortrans = new ColorTransform( 0.99, 0.99, 0.999);
bmpdata = new BitmapData(465, 465, false, 0);
addChild( new Bitmap(bmpdata));
sprite = newFig(0, 0, 40, 0xFFFFFF);
matrix = new Matrix();
addEventListener( Event.ENTER_FRAME, enterframe);
stage.addEventListener( MouseEvent.CLICK, reset);
}
public function enterframe(e:Event):void{
matrix.identity();
var s:Number = Math.random() * 2;
matrix.scale(s, s);
matrix.rotate( Math.PI * Math.random());
matrix.translate(mouseX, mouseY);
colortrans.greenMultiplier = mouseX / 465;
colortrans.blueMultiplier = mouseY / 465;
colortrans.alphaMultiplier = Math.random();
bmpdata.colorTransform( bmpdata.rect, bmpcolortrans);
var mapBitmap:BitmapData = new BitmapData(465, 465, false, 0);
var mapPoint:Point = mapBitmap.rect.topLeft;
var componentX:uint = BitmapDataChannel.RED;
var componentY:uint = BitmapDataChannel.GREEN;
var scaleX:Number = 256;
var scaleY:Number = 256;
var r:uint = 128 + 2;
var g:uint = 128 + 1;
var b:uint = 128;
var col:uint = r << 16 | g << 8 | b;
mapBitmap.fillRect( mapBitmap.rect, col);
filter = new DisplacementMapFilter( mapBitmap, mapPoint, componentX, componentY, scaleX, scaleY);
bmpdata.applyFilter( bmpdata, bmpdata.rect, bmpdata.rect.topLeft, filter);
bmpdata.draw( sprite, matrix, colortrans, BlendMode.SCREEN);
}
public function reset(e:MouseEvent):void{
bmpdata.fillRect( bmpdata.rect, 0x000000);
}
public function newFig(cx:Number, cy:Number, size:Number, col:uint):Sprite{
var shape:Sprite = new Sprite();
shape.graphics.lineStyle(0, 0x000000, 0.3);
shape.graphics.beginFill( col );
shape.graphics.drawCircle(cx, cy, size*0.5);
shape.graphics.drawCircle(cx, cy, size*0.4);
var w:Number = size * 0.6;
var h:Number = size * 0.15;
shape.graphics.drawRect( cx - w/2, cy - h/2, w, h);
shape.graphics.endFill();
return shape;
}
}
}