Chris Huff wrote:
> 
> In article <38B7FCCF.A533B213@merlin.net.au>, PoD <pod### [at] merlinnetau>
> wrote:
> 
> > I didn't mean not to include the z-depth option, just that using planar
> > mapping would make a lot of uses difficult.  Maybe reuse the mapping
> > keyword here, I could see at least spherical, planar and cylindrical
> > being useful.
> 
> Not planar mapping, spherical mapping. Distance would be z, and
> vertical/horizontal angle would be x and y, and the center would be the
> light_source position. It would be like wrapping the pigment around the

Sorry, I read x and y and assumed planar mapping.

> sphere, except the color also varies depending on it's distance from the
> center of the sphere. You would have to tile it in some cases(many times
> the tiling wouldn't be visible), but I don't see any other way of
> mapping 3D space around a point. Maybe also cylinderical mapping.

Planar would be useful for image mapped lights such as slide projectors.

> 
> > Here's something if you had z-depth.  Use a density file as the pattern
> > and project 'solid' holograms into media with shadowing from intervening
> > objects :)
> 
> That is an idea...although I guess it could also be done with scattering
> media using the density file and a plain colored light, at least as long
> as no other lights interact with it.

That's pretty much what I'd do with current POV, but it'd look pretty
cool in an animation with characters walking in front of the projector.

PoD.

Post a reply to this message