Andrew Bailey (andrew++at++csunb0.leeds.ac.uk)
Tue, 28 Jul 1998 18:48:55 +0100
I have written a Performer application which will eventually evolve into
a driving simulator, and I am currently wondering how to get some
objects around the scene by themselves. I am using Performer2.2
(although modelling is done in MultiGen1.4). I have a static car in the
scene at the moment. The road has a line defined along the centre and I
want the car to move along that line at a set speed. I have added the
car in MultiGen, so at the moment it is lurking somewhere in the
Performer scene graph. I have only been using Performer for a couple of
months now but I am pretty confident with it (I think!).
Anyway, I am searching the scene graph for the pfGeoSet which has the
polyline in and I have managed to access the co-ordinates of the line
(there are only 2 as it's a straight section of road). I have also
calculated the correct XYZ position I want to move the car to (depending
on the set speed) along the road. Now for my question.
How do I update the co-ordinates of my "car" which is just sitting on
the road at the moment?
Should I not include the car in the MultiGen database, and instead add
the object at runtime (the car is a stand alone .flt file I simply
instanced in MultiGen)? I think this can be done.
Or should I be searching for the car in the Performer scene graph and
updating its transformation with my new co-ordinates? I think I will be
needing some sort of DCS for the car anyway.
Hope someone can understand all that!
thanks,
Andrew Bailey
=======================================================================
List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/
Submissions: info-performer++at++sgi.com
Admin. requests: info-performer-request++at++sgi.com
This archive was generated by hypermail 2.0b2 on Mon Aug 10 1998 - 17:57:45 PDT