Another question about opengl

[Zhanghong_T_]

Now I want to do such thing:

1. read a few points (2D) from a file;

2. display the points to the screen;

3. call fglTranslatef, fglScalef and fglRotatef (Only 2D)to these points.

4. after these transform, I will input new points by mouse click.

Now I want to know: How can I get the new coords of the inputted points from there coords of screen?Are there any subroutines in opengl?

Thanks,

Sincerely,

Tang, Zhanghong