Re: [GD-General] FPS style input Control

[Paul C. <pa...@pa...>]

What you want is quaternions.  Using quaternions to build your camera matrix
removes the nasty singularities, and allows you to rotate right round, 360
degrees, without any problems.  Try doing a search through the gd-algo list
on quaternions and google should turn up alot of info.  Theres a pdf at
http://www.magic-software.com/Doc.html that describes the quaternion math
you need, (and http://mathworld.wolfram.com is another good resource) which
should give you most of the info you need.  The quaternion to matrix
conversion is probably the important bit :).

hth

Paul

----- Original Message -----
From: "Idahosa Edokpayi" <ida...@sw...>
To: <gam...@li...>
Sent: Saturday, February 09, 2002 4:00 AM
Subject: [GD-General] FPS style input Control


> Given control input with X and Y axes how do I use the axes to do FPS
style
> of control. I know about pitch and yaw but I would like to not have the
> discontinuity at the poles, i.e. you can't look straight up or down.
>
> Idahosa Edokpayi
>
>
>
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