Jukka Vaisanen (vaizki++at++merlin.iscape.fi)
Tue, 20 May 1997 16:02:45 +0300 (EET DST)
> Hi
>
> I am currently working on a simulation of an excavator (used for digging),
> using Performer 2.0 (IRIX 5.3). The excavator has been modelled and is
> working well, however animating the digging has proved to be little
> tricky. I am able to produce a reasonably convincing hole in the ground,
> but am not able to integrate this with the ground created by using a
> pfEarthSky. An ideal solution would be the ability to make parts of the
> "Earth" transparent, revealing the hole underneith. Is there a way of
> doing this?
How about drawing like this:
1. Draw pfEarthSky
2. Clear zbuffer
3. Draw everything else
This way the holes would not be covered by the Earth (they will overdraw
regardless of the pixel z-positions). I can't think of a better way to do
it, someone else here probably can.
Jukka Vaisanen
Executive Manager
Iscape Software vaizki++at++iscape.fi
Tel: +358-9-648686 GSM: +358-40-5007978
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