If you have no objection to using MegaPOV, there is a trace function
that
can tell if a vector from a given point passes through a given object.
This could help you avoid the walls.

Alex McMurray wrote:
> 
> Hello everyone.
> 
>     After a couple of years of rendering images in POV, I am now
> entering the joys?? of animation, what I would like help on is how do I
> create a camera path through a meandering canyon without passing through
> the sides or bumping into same.
> 
>     I have created the canyon landscape using heighfields, from a
> Windows paint image of my own design.
>     I know where the canyon is on the image map, but how do I translate
> that into x, y, and z co-ordinates in POV.
>     btw, I create the landscape in Moray and export in POV.
>     I have looked at a few animation and heightfield turorials as listed
> in the links page, but I can't seem to find the information that I am
> looking for.
>     Any help will be greatly appreciated.
> 
> Alex.
> 
> --
>   ,-._|\  Alex McMurray
>  /  Oz  \ ale### [at] melbpcorgau               Melbourne PC User Group.
>  \_,--.x/Melton.                                           Australia
>        v

-- 
Mr. Art

"Often the appearance of reality is more important 
than the reality of the appearance."
Bill DeWitt 2000

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