Inverted Masks

[rob day]

Is there an easy way to programatically create an inverted mask? I have a large sprite with a smaller sprite on top. If I mask the large sprite with the smaller sprite it gets trimmed to the small sprite's dimension. What if I wanted the larger sprite to appear to have a hole cut out of it the size of the small sprite?

[Ned Murphy]

Without knowing your true intentions, one option is to just make the smaller sprite the same color as the background behind the larger sprite and forget the mask.

[rob day]

I do need a mask. I need a window or cutout in a front object so that when an object is moving behind the front object it is masked by the cutout

[clbeech]

you could use the 'smaller' sprite to mask the moving object, and not the mask the larger sprite - in this way it will 'appear' as thought there is a hole in the larger object 😉

[Ned Murphy]

I don't think you can invert a mask in any simple manner, though I may be wrong. Here's a link to a possible solution that uses code:

http://www.actionscript.org/forums/showthread.php3?p=796025

[rob day]

Thanks, I was about to try doing with a bitmap, this helps.