# Random Placement / Mask Effect

**URL:** <https://forum.kirupa.com/t/random-placement-mask-effect/188000>\
**Category:** flash\
**Created:** [May 3, 2006, 6:19pm UTC](https://forum.kirupa.com/t/random-placement-mask-effect/188000 "2006-05-03T18:19:41Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![o0\_ryan\_0o](https://avatars.discourse-cdn.com/v4/letter/o/3d9bf3/32.png) [@o0\_ryan\_0o](https://forum.kirupa.com/u/o0_ryan_0o)\
**Post date:** [May 3, 2006, 6:19pm UTC](https://forum.kirupa.com/t/random-placement-mask-effect/188000/1 "2006-05-03T18:19:41Z")

</div>

I can’t seem to figure out how to do this masking effect…

Basically, I wan’t to create a mask out of randomly placed movie clips. I have a movie clip of a circle that grows from small to large and then stops. I want to randomly place this movie clip on a mask layer until everything is completely filled and the layers bellow can be seen.

I’ve seen this masking effect done before, but I can’t seem to easily recreate it. If there’s a easier way than what I’m thinking, let me know. Any help is greatly appreciated. Thanks ahead of time.