CreateJS/EaselJS — pull request #146 by Beclamide (2012-05-10 12:55:22+00:00)
Title: ImageMaskFilter.js

Allows you to mask a DisplayObject using a black & white opacity map image. White is transparent, and black is opaque.

Usage: ImageMaskFilter([image] Mask Image, [Number] Filtered DisplayObject Width, [Number] Filtered DisplayObject Height)

The DisplayObject needs to be cached after the filter has been applied.