Comments on: NeHe Tutorial 02: Drawing Triangles and Quadrilaterals

By: pat

pat — Sun, 20 May 2012 18:07:58 +0000

The method declaration in my file is:

(defmethod glut:keyboard ((win my-window) key xx yy) ...)

The (win my-window) means that this method parameter is going to be called win and this is the version of the method for when this parameter is of type my-window. In the bit you pasted, you renamed win to window in the declaration.

By: Igor Blinov

Igor Blinov — Sun, 20 May 2012 15:10:49 +0000

I have a question about this tutorial. In your source you have a function “keyboard”. Here is it:

(defmethod glut:keyboard ((window my-window) key xx yy)
  (declare (ignore xx yy))
  (case key
    ((#\q #\Q #\Escape) (glut:destroy-current-window))
    ((#\f #\F)                      ; when we get an 'f'
                                    ; save whether we're in fullscreen
         (let ((full (fullscreen-p win)))
           (glut:close win)         ; close the current window
           (glut:display-window     ; open a new window with fullscreen toggled
               (make-instance 'my-window
                              :fullscreen (not full)))))
  ))

But when I launch it, I had an error, that “win” is unbound. How can I fix it?
(Yeah, I can change (glut:close win) to (glut:destroy-current-window))

By: NeHe Tutorial 03: Color :: nklein software

NeHe Tutorial 03: Color :: nklein software — Thu, 03 Jun 2010 03:32:53 +0000

[...] the previous tutorial, we drew a plain triangle and quadrilateral on the screen. The next NeHe tutorial colors this [...]