Re: Billboarding in Quesa?

[Kevin M. <mat...@ar...>]

Perhaps a billboarding geometry type or transform would be useful so the behavior can go with a 3DMF model from one app to another?  isn't the question more than just what is easy to do within an app?

thx,

K 

On Fri, 27 Aug 2004 10:50:46 -0500, Joseph J. Strout wrote:
> At 4:30 PM +0100 8/27/04, Dair Grant wrote:
> 
>> That's more intended for GUI overlays - it might be useful to have a
>> more 3D-style billboard, that would maintain some orientation to the
>> camera while remaining fixed in other dimensions. E.g., a tree that
>> would rotate around the y axis to face the camera position, while
>> remaining fixed around z and x.
>> 
>> Don't know if that would be best as some kind of transform that would
>> position any type of geometry, or as a new geometry type (the latter
>> would be a textured quad, while the former would let you do both a
>> textured quad and something more complex).
> 
> I don't think anything new in Quesa is needed for that -- I do this 
> all the time, and it's easy enough to simply rotate those objects to 
> face the camera whenever the camera moves.  Note that some things you 
> want to have exactly face the camera (e.g. for sprites), while others 
> you want to only rotate around one axis, as in your tree example. But 
> both are easy to do yourself.
> 
> Best,
> - Joe
> 
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