Newsgroups: comp.robotics
Path: cantaloupe.srv.cs.cmu.edu!rochester!udel!gatech!howland.reston.ans.net!ix.netcom.com!netcom.com!nagle
From: nagle@netcom.com (John Nagle)
Subject: Re: Need: coordinate-transfomation
Message-ID: <nagleD2sLEp.F88@netcom.com>
Organization: NETCOM On-line Communication Services (408 261-4700 guest)
References: <kossatz.3.00143A7A@ping.at>
Date: Sun, 22 Jan 1995 05:47:13 GMT
Lines: 16

kossatz@ping.at (Max Kossatz) writes:
>Hello,
>i am using for an installation a 3d-tracker, which gives me the 
>rotation-matrix of the receiver in aspect to the transmitter (I hope this is 
>understandable), my problem is now, that i need the rotation-matrix which 
>represent the rotation of the transmitter in aspect of the receiver (in other 
>words, i want to change the coordinate-system).

>i also get the coordinates of the receiver, and here it is no problem (i only 
>have to multiply it with -1), but how can i transform the rotationmatrix???

    Any good graphics textbook, such as "Computer Graphics":, by Foley,
vanDam, Feiner, and Hughes, should explain how to use rotation matrices.
In "Computer Graphics", this is covered in chapter 5.

						John Nagle
