title: How can I copy a masked bitmap maintaining the masking transparency in actionscript?
body: <p>I need to find a way to copy a masked bitmap. I have a bitmap on stage, and a user drawn sprite that acts as a mask. I need to capture/copy the masked area bitmap, maintaining the transparency created by the masking to eventually encode as a png.</p>
  
  <p>I could find no documentation on how to accomplish this using copyPixels(), or any other directions.</p>
  
  <p>Thanks in advance for any assistance -</p>
  
  <p>b</p>