Hi, 

When I use (delta) with (draw*) instead of (build*) it doesn't work, why does 
this happen? I think that the reason of this is that the (draw*) command needs 
to be refreshed every-frame and the (build*) one doesn't.

ex.

(clear)
(define (cube)
(rotate (* 45 (delta)) 0 0))
(draw-cube)); draw instead of build
(every-frame (cube))

And I understand that (delta) makes the time between each frame to be constant. 
But this will not be the same time for the (draw-cube) part.
I hope this make some sense.

Thanks, 

Luis
                                          

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