plib-devel

RE: [Plib-devel] SLERP

[Michael K. <neg...@ea...>]

I fixed a lot of mistakes in the Quaternion code and sent them to Steve. I
suspect he put them into the CVS tree but I actually havent check up on him
=)

I fixed errors in 3 functions and now everything works fine from what I can
tell. I even sent Steve a demo of a quaternion camera. I'm not at home or
I'd send the updates again but the essence was someone had

X*X + X*Y + Z*Z + W*W
in two functions which should be Y*Y

And the mult function was REALLY off, but it appears from your message you
found those mistakes.


-mike

Re: [Plib-devel] SLERP

[Steve B. <sjb...@ai...>]

Michael Kurth wrote:
> 
> I fixed a lot of mistakes in the Quaternion code and sent them to Steve. I
> suspect he put them into the CVS tree but I actually havent check up on him
> =)
> 
> I fixed errors in 3 functions and now everything works fine from what I can
> tell. I even sent Steve a demo of a quaternion camera. I'm not at home or
> I'd send the updates again but the essence was someone had
> 
> X*X + X*Y + Z*Z + W*W
> in two functions which should be Y*Y
> 
> And the mult function was REALLY off, but it appears from your message you
> found those mistakes.

I worked on the fixed up code - and fixed some other inconsistancies in
the SG library over my vacation - I should get a release out in the next
day or two - jetlag permitting  :-)

The SGD part of the library was getting sadly out of date compared to the
main SG functions and there were quite a few places where doubles were
being used in float functions and vice-versa.

Watch this space.

-- 
Steve Baker                  http://web2.airmail.net/sjbaker1
sjb...@ai... (home)  http://www.woodsoup.org/~sbaker
sj...@ht...      (work)