Blackboard for Nokia 5800 is a drawing application simulating a blackboard.

There are four touch control buttons: info, chalk, sponge and exit. Chalk is used for drawing and sponge for erasing. Sponge leaves wet trails simulating reality.

Actual drawing is done overlaying partially transparent PNG image on top of the background graphic. Realistic drawing sensation is achived by coordinate interpolation.

http://www.youtube.com/watch?v=x0m5HhJ0MZ8&eurl=http%3A%2F%2Foffscr.net%2Fdemos.html&feature=player_embedded

Download Here