From: teunis <teunis@computersupportcentre.com>
  To  : ggi-develop@eskimo.com
  Date: Wed, 19 Aug 1998 18:27:58 -0700 (MST)

Re: LibGGI3D RFC

On Wed, 19 Aug 1998, Jon M. Taylor wrote:

> On Wed, 19 Aug 1998, Andrew Apted wrote:
> 
> > Jon writes:
> > 
> > >  III. Design specifics.
> > >  
> > >  * struct camera { float x1, y1, z1, x2, y2, z2 }. Every LibGGI3D display
> > >  will have a camera struct attached to it.  A generic hook for arbitrary
> > >  display data should also be present - the shaders might use it.  void
> > >  *private_data. 
> > 
> > I guess x1,y1,z1 is the camera position, and x2,y2,z2 is the normal to
> > the viewplane, but what about the orientation of the viewplane (the "up"
> > vector for want of the precise term) ?
> 
> 	On reflection, I think I will have an observer X, Y, Z and a view
> orientation theta, phi, alpha.

And a near/far clipping planeset...
(a whole viewing frustrum is handier - especially for clipping :)

G'day, eh? :)
	- Teunis