It places a card on a table and allows you to move it around.  Use the mouse wheel to zoom in/out and pan around the screen.  This was a miserable failure to try and understand projections.  It works, but the code & math is poor, my understanding is poor, and it certainly couldn't be extended to work with eg multiple cards.  I'm looking for help on how to improve these and understand it better in order to extend it.

It's supposed to give the user a default view of the board (at an 

angle, so that the opponents cards seem further away on the opposite 

side - similar to the way most of your 3d chess games have looked). 

Currently there is just one card, but imagine lots.  In the default 

view the user should be able to mouse over a card and drag it about 

the table.  If the user presses 'z' then the 'camera' zooms in (and 

into a flat angle) and the user should be able to just pan around by 

clicking and dragging.