forked from: flash on 2010-1-19

/**
 * Copyright marcsali ( http://wonderfl.net/user/marcsali )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/2rd0
 */

package {
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.MouseEvent;
	public class draw extends Sprite {
		public var drawing:Boolean=false;
		public var canvas:Sprite = new Sprite();
		public var pixel_dist:int=20;
		public var saved_x:int;
		public var saved_y:int;
		public function draw():void {
			addChild(canvas);
			canvas.graphics.lineStyle(5);
			stage.addEventListener(MouseEvent.MOUSE_DOWN,mouse_pressed);
			stage.addEventListener(MouseEvent.MOUSE_MOVE,mouse_moved);
			stage.addEventListener(MouseEvent.MOUSE_UP,mouse_released);
		}
		public function mouse_pressed(e:MouseEvent):void {
			drawing=true;
			canvas.graphics.moveTo(mouseX,mouseY);
			saved_x=mouseX;
			saved_y=mouseY;
		}
		public function mouse_moved(e:MouseEvent):void {
			if (drawing) {
				var dist_x:int=mouseX-saved_x;
				var dist_y:int=mouseY-saved_y;
				if (dist_x*dist_x+dist_y*dist_y>pixel_dist*pixel_dist) {
					canvas.graphics.lineTo(mouseX,mouseY);
					saved_x=mouseX;
					saved_y=mouseY;
				}
			}
		}
		public function mouse_released(e:MouseEvent):void {
			drawing=false;
		}
	}
}