Raster position

Hi,

I am using the C# code for drawing the image (bitmap) on the screen. So my view is -1 upto 1 in x and y axes. I put my image in raster position (-2,0) and the image is go on.

  1. Why I can see the image (part of it)?
  2. How can I move the image that the part of it will be viewed on the screen?

Thank’s
Alexei