ブラーフィルターでじわじわおえかき

ブラーフィルターさんの練習中。
ドラッグ！ドラッグ！
一定のあたい以上黒いところからは白線になるよ！
どうしても黒に白が負けてしまう現象をどうにかしたい

by maxcaffy 18 Apr 2010

• Related works: 2
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/**
 * Copyright maxcaffy ( http://wonderfl.net/user/maxcaffy )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/hcfU
 */

//ブラーフィルターさんの練習中。
//ドラッグ！ドラッグ！
//一定のあたい以上黒いところからは白線になるよ！
//どうしても黒に白が負けてしまう現象をどうにかしたい

package {
    import flash.display.Sprite;
    import com.actionscriptbible.Example;
    import flash.display.Shape;
    public class FlashTest extends Example {
    		private var s:Shape = new Shape();
    		private var blur_fields:BlurFields;
        public function FlashTest() {
            // write as3 code here..
            //trace("A");
            //s.graphics.beginFill(0x000000);
            //s.graphics.drawCircle(100,100,50);
            //addChild(s);
            blur_fields  = new BlurFields(stage,stage.stageWidth,stage.stageHeight,0x000000,0xFFFFFF);
            addChild(blur_fields);
        }
    }
}

import flash.display.Shape;
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.display.Stage;
import flash.filters.BlurFilter;
class BlurFields extends Bitmap{
	
	private var buffer:BitmapData;	//ぼかし用フィールド
	private var canvas:Shape = new Shape();		//ベクタ用
	private var flag_drag:Boolean = false;		//ドラッグしてるよー
	private var blur:BlurFilter = new BlurFilter(5,5);
	private var i:int = 0,	k:int = 0;
	private var temp_col:uint = 0;
	private var flag_toggle:Boolean = false;
	private var mouse_prevX:Number = 0,	mouse_prevY:Number = 0;
	
	public function BlurFields(stage:Stage,width:int,height:int,linecolor:uint = 0x000000,backcolor:uint = 0xFFFFFF){
		super(new BitmapData(width,height,false,backcolor));
		//このクラス自身のサイズ決定 よくわからないけどsuperが必要なんだね！
		buffer = new BitmapData(width,height,false,backcolor);
		stage.addEventListener("enterFrame",_entFunc);
		stage.addEventListener("mouseUp",_mouseUp);
		stage.addEventListener("mouseDown",_mouseDown);
		stage.addEventListener("mouseMove",_mouseMove);
	}
	private function _entFunc(event:Event):void{
		//
		//canvas.graphics.lineStyle(3,0x000000);
		//canvas.graphics.moveTo(mouse_prevX,mouse_prevY);
		//canvas.graphics.lineTo(mouseX,mouseY);
		//temp_col = 0;
		//for(i=0;i<10;i++){ 
		//	for(k=0;k<10;k++){
		//		temp_col += bitmapData.getPixel(i*(stage.stageWidth/10),k*(stage.stageWidth/10));
		//	}
		//}
		//if(temp_col/100 < 0x777777){
		//	flag_toggle = true;//黒側
		//}else{
		//	flag_toggle = false;
		//}
		if(flag_toggle){
//			buffer.draw(canvas,null,null,"overlay");
			buffer.draw(canvas,null,null,"add");
		}else{
			buffer.draw(canvas,null,null,"overlay");
		}
		buffer.applyFilter(buffer,buffer.rect,buffer.rect.topLeft,blur);
		bitmapData.draw(buffer);
	}
	private function _mouseUp(event:MouseEvent):void{
		flag_drag = false;
		canvas.graphics.clear();
	}
	private function _mouseDown(event:MouseEvent):void{
		mouse_prevX = mouseX;
		mouse_prevY = mouseY;
		flag_drag = true;
		if(bitmapData.getPixel(mouseX,mouseY) < 0x800000){
			flag_toggle = true;
		}else{
			flag_toggle = false;　
		}
	}
	private function _mouseMove(event:MouseEvent):void{
		if(flag_drag){
			if(flag_toggle){
				canvas.graphics.lineStyle(5,0xFFFFFF);
			}else{
				canvas.graphics.lineStyle(5,0x000000);
			}
			canvas.graphics.moveTo(mouse_prevX,mouse_prevY);
			canvas.graphics.lineTo(mouseX,mouseY);
			mouse_prevX = mouseX;
			mouse_prevY = mouseY;
		}
	}
}