Converts a point on the sprite's image to the pixel on the sprite's image that is underneath that point. For example if a 200x100 pixel image was assigned to a sprite of size 10x10, then calling this command with a pixel value of 5 (center of the sprite) would return 100 (center of the image). The sprite must have an image assigned for this to work or it will always return 0. The command is not limited by the size of the image or sprite, so in the above example a pixel value of 20 or -1 would both be valid.
integer GetSpritePixelFromX( iSpriteIndex, x )