Path: chuka.playstation.co.uk!scea!peter_alau@playstation.sony.com
From: jamin1@psu.edu (Jamin Frederick)
Newsgroups: scee.yaroze.programming.3d_graphics
Subject: Re: RotMatrixBUG????
Date: Thu, 09 Jul 1998 20:44:21 GMT
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On Thu, 09 Jul 1998 09:35:34 +0100, James Russell
<James_Russell@scee.sony.co.uk> wrote:

>> Now what do I have to do if I have a button for each rotation
>> direction, positive and negative around each axis, and i want to
>> rotate the object arbitrarily without using the "incremental" method?
>> Apparently I can't just increment/decrement the numbers in the (a,b,c)
>> vector when I push the corresponding buttons.
>
>No, that's fine. If you want to rotate your object 40 degrees MORE about the Z axis,
>then just add 40*4096/360 to 'c'.
>

But this is the problem.  It works at first, when still in the
original orientation, but gets screwed up when I change the
orientation of the model in X or Y directions, like the original post.
i.e., adding an amount t to the current angle c no longer has the same
effect when the model is tilted away (??).


Jamin



>Cheers,
>
>James
>
>-- 
>== James_Russell@scee.sony.co.uk                +44 (171) 447-1626
>== Developer Support Engineer - Sony Computer Entertainment Europe
>
>A diagnostic is someone who doesn't know if there are two Gods.