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How to use hitTestPoint when a movie is scaled

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+1 A:

I normally use:

 stage.addEventListener(MouseEvent.MOUSE_OVER, functionName);

But, if you have a specific reason for using the hitTest method, than you may want to look into converting your point from a global to a local MovieClip coordinate. Once you scale a MovieClip, it's x-y coordinates are no longer mapped 1-to-1 to the stage coordinates. BUT, you can make Flash figure out which coordinate you ARE talking about by using:

 yourMovieClip.globalToLocal( yourTestPoint )); // [x=-10, y=0]

Here is the related link with all the documentation...

http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/display/DisplayObject.html

You may also want to take a look at the "hitTestObject()" method which does the same thing as hitTestPoint, only using the entire object... no points!

hope this helps.

exoboy 2010-10-20 21:19:11

Thanks for your answer. As you say, the issue is that when the movie is scaled up (in a maximised browser window say), the co-ordinates of my outermost movie clip don't match those of the stage. So, seemingly contrary to the docs, I need to use the co-ordinate space of my outermost DisplayObject for the hit test, as below: var point:Point = new Point (e.stageX, e.stageY); point = outerMostDisplayObject.globalToLocal(point); if (hitArea.hitTestPoint(point.x, point.y, true)) {}

tarling 2010-10-21 08:52:51

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How to use hitTestPoint when a movie is scaled

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