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- Newsgroups: comp.graphics
- Path: sparky!uunet!decwrl!csus.edu!netcom.com!thinman
- From: thinman@netcom.com (Technically Sweet)
- Subject: Re: Shoemake quaternion typos
- Message-ID: <by#nqmf.thinman@netcom.com>
- Date: Thu, 20 Aug 92 17:43:03 GMT
- Organization: International Foundation for Internal Freedom
- References: <rd#n39#.spworley@netcom.com>
- Lines: 17
-
- spworley@netcom.com (Steven) writes:
-
- >I've been implementing a quaternion camera model, and have been making
- >some routines for quick conversion of quaternions to matrix to Euler,
- >etc. Most of this is very nicely done in the '85 SIGGRAPH paper from
- >Shoemake. One thing I've added was a conversion from a "lookat" and
- >"up" vector to a quaternion orientation.
-
- GG I has a quaternion viewpointer, GG II has some quaternion thing,
- and GG III source (available from princeton.edu:pub/Graphics/GraphicsGems)
- has a spherical interpolator. Maybe these writeups are more useful?
- There's code in each article.
- --
-
- Lance Norskog
-
- Data is not information is not knowledge is not wisdom.
-