RE: RE: float precision

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BOCCARA Michael (MICHAEL.BOCCARA++at++siege.aerospatiale.fr)
Thu, 28 Nov 1996 09:56:44 +0100

      Thank you all for your replies.
     Thanks to Nicolas Gauvin and Michael Jones for their tricks about transposing
     world origin to the object's center, and using DP only for world calculus,
     not performer matrices. I had had already the idea of putting the pfScene's
     center to the object's center, but without using double precision in some of
     my matricial transformations.

     Thanks also to Angus for his advice about using 2 channels.
     But, Angus, do you mean we can use 2 channels and SUPERPOSING them one obove
     the other ?!? I thought we only could put the channels one besides each
     other...
     I'll try, even without any programming knowledge of OPEN GL.
     What I did to avoid the problems of near/far ratio when I am looking at the
     same time at a spaceship and the Earth is to change the scale of the object
     (bigger), so that I dont need to put the Near too close, letting the Far
     unchanged. That is a good trick beacuse changing the scale of the object does
     not modify the apparence of the earth...

     Bye,`
     Mike
     _______________________________________________________________________________
     _
     De: P=INTERNET; DDA.TYPE=RFC-822; DDA.VALUE=guest(a)holodeck.csd.sgi.com le
     Mer 27 Nov 1996 22:30
     Objet: Re: float precision
     A: P=INTERNET; DDA.TYPE=RFC-822; DDA.VALUE=info-performer(a)sgi.com; BOCCARA
     Michael
     Fichiers: BDY565.TXT

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