Exception in thread "main" java.lang.NullPointerException
But my area is NOT nulled, so I thought that it might be that not all of the area is connected... still looking into this so I'm not sure yet.
However, I can render the area as a colored primitive:
As you can see the mask when rendered as a primitive has some antialiasing showing... not sure if this is what is helping create my error...
This method however, WILL work once I get why I can't clip by this area...