"D103" <nomail@nomail> wrote:
> "Leef_me" <nomail@nomail> wrote:
> > For example, disco mirror-balls and sequins on clothing catch light and reflect
> > it.
> >
> > My intent is making a movie that has 'random' flashes and flickers.
> >
> > Thanks in advance for any suggestions.
> >
> > Leef_me
>
> For a disco mirror ball, I think the best thing to use would be a mesh with a
> reflective and highly specular texture in conjunction with photon mapping. I
> have noticed a similar effect with some diamonds I have made the same way.
>
> For sequins on clothing, while I haven't actually done anything involving
> people,
> a texture_map seems to me to be the best course, for example
>
> object {
>   Clothing
>   texture {
>     bozo texture_map {
>     [ 0.1 Sequins ]   //play around with these values
>     [ 0.2 Cloth ]
>    }
>    scale //appropriate scale value
> }
>
> The Sequins texture would have to have a high reflection value, > 0.6, like the
> disco ball. If you want a spectrum of reflected colours, use dispersion in the
> interior statement of the object.
>
> You could of course fake the colours, by making a more complex texture_map with
> random colours. I have a random colour macro that I would be willing to post if
> you're interested.
>
> Be aware that photon mapping takes time, my diamonds scene took 25 minutes to
> render at 800x600, for a 30 fps animation, this would mean >14 hours to render,
> assuming that you are moving/rotating the objects that use photons, if not, use
> a photon save_file.
>
> Hope this helps,
> D103

Hi again,

I've done some experimenting, and the mesh gave the expected results for a
mirror ball, but I could not get a decent cloth/sequins texture. However, see
what you can come up with.

An image_map might be the next best thing, but I doubt you could get the
required caustics from it.

Regards,
D103

Post a reply to this message