On Sat, 4 Mar 2000, Chris Huff wrote:

> In article 
> <Pin### [at] belialrenonvus>, 
> <cre### [at] belialrenonvus> wrote:
> 
> > > Isosurfaces, which are shapes defined by an arbitrary equation.
> > 
> > Ummmm ok :) 
> 
> I did a bad job of explaining that, sorry. The isosurface object takes 
> an equation and a threshold value, and creates the surface from all the 
> points where the equation is equal to the threshold. The surface of the 
> shape is like a skin stretched over the areas of higher density(or lower 
> density, depending on how you set it up). As an example, the equation 
> for a unit sphere is "sqrt(sqr(x) + sqr(y) + sqr(z)) - 1". So an 
> isosurface sphere would be:
> isosurface {
>     function {sqrt(sqr(x) + sqr(y) + sqr(z)) - 1}
>     threshold 0 // This tells it to place the surface at points
>                 // where the value of the equation is 0
> }
> 

Ahhh ok......


> 
> > I've heard about media but to my (semi?:) eternal shame I haven't even
> > read POVrays docs on media yet...I know it can do cool stuff...
> 
> It is basically a way of simulating atmospheric effects like smoke, 
> steam, fire, fog...(there is a separate "fog" feature, but it behaves 
> differently. For example, it doesn't interact with lights, and shadows 
> don't show in it.)

Hrmmm I definatly will have to check that stuff out....d/l Mega POV btw,
NEAT lens effects! I think I'll install POVRAY in another directory and
place MegaPOV there...this way I can have two set if include files..but
this is VERY cool I wonder if that new version of POVRAY I've heard Ken
whisper about :) (3.5) will have photon mapping?


> 
> > Isn't that the guy who wrote those lens flare plugins for Moray (I d/l it
> > to try it (Moray that is :)...now I use it for it's awesome texture
> > editor....well material editor I should say......man POVRAY sure gives me
> > heck when I try and combine my inc file with borrowered materials from
> > Moray and textures from the textures.inc file :)
> 
> Nathan Kopp? He is the one managing MegaPOV. He is also the one who 
> wrote the improvements to the radiosity, the third media sampling 
> method, and the photon mapping feature. :-)
> 
> I'm not sure about Moray plugins(I don't use Moray, I don't even use the 
> same platform), but he has done lens flare include files...

Yeah.....well I seem to recall a plugin called Nathan Kopp plugins....but
I don't use Moray a whole lot except for well.....textures

> 
> -- 
> Chris Huff
> e-mail: chr### [at] yahoocom
> Web page: http://chrishuff.dhs.org/
> 
>

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