像素碰撞检测

var redRect:Rectangle = redClip.getBounds(this);
var redClipBmpData = new BitmapData(redRect.width, redRect.height, true, 0);
redClipBmpData.draw(redClip);

var blueRect:Rectangle = blueClip.getBounds(this);
var blueClipBmpData = new BitmapData(blueRect.width, blueRect.height, true, 0);
blueClipBmpData.draw(blueClip);

addEventListener(Event.ENTER_FRAME, enterFrame);

function enterFrame(e:Event):void
{
	blueClip.x = mouseX;
	blueClip.y = mouseY;

	if(redClipBmpData.hitTest(new Point(redClip.x, redClip.y),
								255,
								blueClipBmpData,
								new Point(blueClip.x, blueClip.y),
								255

						  ))
	{
		trace("hit");
		redClip.filters = [new GlowFilter()];
	}
	else
	{
		redClip.filters = [];
	}
}

 

渲染版

addEventListener(Event.ENTER_FRAME, enterFrame);

function enterFrame(e:Event):void
{
	blueClip.x = mouseX;
	blueClip.y = mouseY;	

	redClip.rotation++;

	var blueRect:Rectangle = blueClip.getBounds(this);
	var blueOffset:Matrix = blueClip.transform.matrix;
	blueOffset.tx = blueClip.x - blueRect.x;
	blueOffset.ty = blueClip.y - blueRect.y;	

	var blueClipBmpData = new BitmapData(blueRect.width, blueRect.height, true, 0);
	blueClipBmpData.draw(blueClip, blueOffset);		

	var redRect:Rectangle = redClip.getBounds(this);
	var redClipBmpData = new BitmapData(redRect.width, redRect.height, true, 0);

	var redOffset:Matrix = redClip.transform.matrix;
	redOffset.tx = redClip.x - redRect.x;
	redOffset.ty = redClip.y - redRect.y;	

	redClipBmpData.draw(redClip, redOffset);	

	var rLoc:Point = new Point(redRect.x, redRect.y);
	var bLoc:Point = new Point(blueRect.x, blueRect.y);	

	if(redClipBmpData.hitTest(rLoc,
									255,
									blueClipBmpData,
									bLoc,
									255
						  		))
	{
		trace("hit");
		redClip.filters = [new GlowFilter()];
	}
	else
	{
		redClip.filters = [];
	}

	blueClipBmpData.dispose();
	redClipBmpData.dispose();
}