BitmapViewport3D does not initialize bitmapTransparent in the constructor

[GoogleCodeExporter]

1. Create a BitmapViewport3D with transparancy=true
2. Change viewPortWidth or viewPortHeight
3. Render

Background is not transparent but opaque.

To fix it all that needs to be done is to add:
this.bitmapTransparent=bitmapTransparent;

In the constructor.

Original issue reported on code.google.com by mikkohaa...@gmail.com on 29 Sep 2009 at 8:00