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Re: [Virtools] Coordinate System & Orientation

You can check out

http://members.shaw.ca/d.callele/VirtoolsDemos/CoordinateSystems.html

and even

http://members.shaw.ca/d.callele/VirtoolsDemos

for some other stuff I did quite a while ago.

Hope these help.

David Callele


----- Original Message -----
From: "Marcel Jiřina" <jirina@labe.felk.cvut.cz>
To: <virtools-user-group@lists.theswapmeet.com>
Sent: Thursday, October 03, 2002 5:55 AM
Subject: [Virtools] Coordinate System & Orientation


Hi there,

I am not familiar with the coordinate system(s) in Virtools Dev and I need
and welcome a help. I understand that there is a 'global coordinate system'
('World coordinate system') by means of it I can place (or translate,
rotate, ...) 3D objects in the World. Besides, there is(?) a 'local
coordinate system' of a 3D object, whose axes can be set with respect to a
'referential', e.g. with respect to --NULL-- ('World coordinate system')
e.g. in authoring mode in the '3D object setup' -> 'Orientation World'
(using Euler angles) or in run-time by the 'Set Orientation' BB by the top
parameters 'Up', 'Dir' and 'Referential' set to '--NULL--' or another 3D
Entity (3D Object). I do not understand what it means 'Local Up' and 'Local
Dir'. I have supposed that these parameters set an orientation of the 3D
object with respect to the 'local coordinate system' of the 3D object but it
does not work this way. I carefully read manuals, online help and tried e.g.
the 'Orientation and the Referential.cmo' but it did not help me. Can
anybody explain me how the coordinate system works in Virtools Dev?

Thanks for help
Marcel


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