VSM 13 (vsm13++at++hol.fr)
Wed, 1 Jul 1998 10:45:45 +0200
>Hello All,
>
>I work for the simulation and training section of Canada's Defense and
>Civil Institute of Environmental Medicine. We are currently working on a
>simulator to train pilots to land helicopters on moving ship decks. We
>are using Performer 2.2 on an IR Onyx2.
>
>Our problem is that sometimes the ship seems to jitter, moving as much as
>0.5 meters each frame. However the matrix that we
>send to Performer when we set the ship's DCS seem to be fine. It is not
>the whole scene that is moving, just the ship model.
>
>Anyone have any idea what is going on?
>
>>~~~~~~~~~~~~~~~~~~~~
>"Man has made many machines, complex and cunning,
>but which of them indeed rivals the workings of his heart?"
> -Pablo Casals
>>~~~~~~~~~~~~~~~~~~~~
>
I have the same problem on flight simulation,
The problem is that Preformer use only float not double.
So if your DataBase is very large or the origine is too far, you have very
large coordonate, and when you use a DCS node, this simplification can made
this sort of think
So you have to translate your database and use Matrix for all ( viewing,
moving objet..) and not coord.
The other solution is that you calculate DCS position on PostFrame and all
modifications of the BDD have to do in Preframe Fct
Yoel HALLAKOUN
>Kevin Pilch
>
>http://www.eng.uwaterloo.ca/student/kapilch/
>kapilch++at++uwaterloo.ca
>kpilch++at++dciem.dnd.ca
>
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