   "2D Projection"
  Realized that I did this solution many moons ago. >_> In an old project.Thanks,Jinroh. ^^[Edited by - Jinroh on April 14, 2010 2:56:19 AM]
  You project a 3D scene onto a 2D screen. Part of the meaning of the word "projection" is the reduction in the number of dimensions. When you project a 2D scene, you're left with a 1D line.It looks a little like you just want to do a simple viewport transformation. In 2D, you probably want to keep your camera axis-aligned and prevent it from rotating. The height and width of the viewing rectangle is determined by the screen you're drawing to. All that's left is specifying the position of the viewing rectangle, which can be done with a single (x, y) coordinate.   