I know this( I doubt anyone of you would make that mistake) , but what I wondered
about is
what more there is that I have missed... I thought this "feature" was documented ;-)


//Spider
Ron Parker wrote:
> 
> On Mon, 18 Jan 1999 22:03:47 +0100, Spider <spi### [at] bahnhofse> wrote:
> >I thought I read somewhere in the doc's that it is calculated if inside a hollow
object,
> >otherways not, (calculating in and outside)
> 
> That is true, too, but the effect I think Ken is seeing is not
> simply due to the presence or absence of the 'hollow' keyword.
> Try it: make a hollow plane and put media in it.  You won't be
> able to see the media.  Add a completely transparent sphere
> below the plane, and you'll see a roughly-circular spot of media.
> 
> ----------------------------
> plane {y, 0 hollow pigment {color rgbt 1} interior {media {emission red .1}}}
> 
> /* uncomment the next line to see the media */
> //sphere {-y, .5 pigment {color rgbt 1}}
> 
> camera {location -8*z look_at 0}
> ----------------------------

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