EnigmA Amiga Run 1997 July/EnigmA AMIGA RUN 20 (1997)(G.R. Edizioni)(IT)[!][issue 1997-07 & 08][EAR-CD IV].iso/lightwave/lwmlist/95.lightwave-10/000000_owner-lightwav…mail.webcom.com_Sun Oct 1 00:24:43 1995.msg

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Date: Sun, 1 Oct 1995 03:19:40 -0400 (EDT)
From: Joe Angell <[e-mail]>
Subject: Re: Gimbal Lock
To: Keith Lea <[e-mail]>
Cc: Lightwave <[e-mail]>
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> What is Gimbal Lock?

Gimbal Lock is a very annoying side effect of the way LightWave does its=20
rotations.  Gimbal Lock is taken from an effect that happens with=20
gyroscopes.  If you rotate the Pitch 90=F8, the Heading an Bank have the=20
same effect.  If you rotate ANY axis 90=F8, the othere two axis (axi?)=20
rotate that wame way.

The current work around is to add a NullObject and parent it between the=20
object you want to rotate and it's parent.  So, if you have an upper arm=20
and body, you would ad a NullObject and parent the arm to the Null, and=20
the Null to the Body.  Now, you only rotate the Null on the Pitch and the=
=20
Arm on Heading and Bank.

This works, but is bothersome.  A simple evasion of Gimbal Lock in the=20
first place would be the easiers way to got, but, hey, lots of the cool=20
stuff in LW is just a big work-around.=20

Hope this helps...

-- Joe
--
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