Re: [isugamedev-devel] OpenGL rotations

[Sean S. <vu...@cs...>]

Sounds like you're drawing the cube off-center and then rotating the 
off-center cube. What you really want is to draw the cube centered with 
the "camera," then rotate it, and then translate it out so that you can 
see it (otherwise you'd be inside it :). Of course when you use OpenGL you 
have to specify transformations BEFORE you draw, so keep this in mind 
while you code your transformations (glRotate/glTranslate should be 
sufficient). If you get what you're getting right now, you can *probably* 
(depends on how you're doing it for the "probably" to work) just switch 
around your glRotate and glTranslate and make it work.

Sean

> Okay, I'm just trying to get a little more practice programming 3D with 
> OpenGL and SDL.  In Ben's tutorial last semester there was a spinning cube 
> that you could look at using the mouse and arrow keys.  I'm trying to change 
> this a bit, and I have a problem.  Whenever I move my mouse, it seems to be 
> rotating the cube around me, and that's really not what I want.  I just want 
> to "look" somewhere else.  I want the cube to stay rotating in it's own 
> original space.  Can anyone help?  Thanks!
> 
> Jacob
> 
> 
> 
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