Zeger Knaepen wrote:

> Christoph Hormann's recent updates on his LOTW-project, inspired me to do
> some
> work on my own LOTW-system.  Now, this is a technique-in-progress (TIP?). 
> A
> radial height_field.  The idea is that parts of the landscape far away
> from the
> camera don't need to be as detailed as the parts close to the camera.  So
> in terms of regular height_fields, the resolution may decrease as the
> distance from
> the camera increases.  This can easily be accomplished by going through
> the points in your height_field-image (or function in this case) not in a
> rectangular way, like regular height_fields, but in a radial way.
> 
> Hope you understand what I'm talking about :)
> 
> Oh, and, uhm, it might be an interesting technique, but I'm afraid, it's
> not very useful: parse-time increases and trace-time doesn't really seem
> to be less than an ordinary height_field :-/
> 

I had a similar idea, also abandoned, my take was to use the camera 
parameters (direction, width, height) to control the nummer of points. It 
was no faster but the memory consumption seemed lower. here's a sample 
image just to prove I'm not just BS-ing :-)

-- 
Bill Hails
http://thyme.homelinux.net/

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