> What would be the easiest way to fade in/out a single object in a
> scene?  (I have a tiled floor that I would like to just fade out over a
> few frames.)  Any help and suggestions would be greatly appreciated.

Say you are using a clock that goes from 0 to 5 and want it to be visible
to frame 1 and fade out up to frame 2, then you might do this:

#if (clock < 2)

plane {y, 0

#if (clock < 1)
pigment {color rgb <1, 1, 1>}
#else
pigment {color rgbt <1, 1, 1, 0+(clock-1)>}
#end

}

#end

The idea here being that the color is static from frames 0 to 1, then has
the transparency increase from 0 to 1 from frame 1 to 2.  After that the
plane is not rendered, which should help save on some rendering time.

-Mike

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