Re: Polhemus Fastrak

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Troy Stephen (troys++at++wormald.com.au)
Wed, 28 Aug 1996 10:57:24 +1000 (AEST)


Hi David,

To get The Polhemus fastrak working with my Performer application, first
off I made sure the receiver box was oriented so that the +X axis is
forward and the +Z axis is down.

Then, to convert from the fastrak coordinate system to the performer
coordinate system, I did the following to the values I received:

performer_x = fastrak_y
performer_y = fastrak_x
performer_z = -fastrak_z
performer_h = -fastrak_h
performer_p = fastrak_p
performer_r = fastrak_r

hope this helps,
Troy Stephen

On Tue, 27 Aug 1996, David Nouls wrote:

> Hello Performers,
>
> This message isn't 100% on-topic but since it's for an application using
> Performer this was the only place I knew for my question:
>
> We are using a Polhemus Fastrak for Position and orientation tracking.
> The position-tracking seems to work but we are having problems with the
> Euler
> Angles that this device generates. When we only change the pitch for
> example, then the heading also changes. The results are rather weired
> motion! Do I have to convert these values if I want to use it in
> Performer ?
>
> /)avid
> --
> ( I had a .sig once, but a little green man beat me up and took it.)

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