Re: Measuring the gap between the spec and browser implementations from Rob Manson on 2014-01-13 (public-geolocation@w3.org from January 2014)

From: Rob Manson <roBman@buildAR.com>
Date: Tue, 14 Jan 2014 09:32:35 +1100
To: Tim Volodine <timvolodine@google.com>
CC: public-geolocation@w3.org
Message-ID: <52D46983.1030005@buildAR.com>

Hi Tim,

> A more general but I think very useful explanation:
> http://www.sensorplatforms.com/understanding-orientation-conventions-mobile-platforms/

That's great. I'd read that page a while back but had forgotten about 
the good example they provided:

   Consider the following exercise: Lay your phone flat on a table.
   Rotate in yaw (around the z-axis) 180° then rotate in pitch (around
   the x-axis) 180° and finally rotate in roll (around the y-axis) 180°.
   You should arrive at the same exact orientation as when you started.
   Yet the yaw-pitch-roll angles all differ by 180° from the starting
   point.


So if we can rely on the other params then you're right - gamma 90/-90 
is fine. Thanks for helping me understand this 8)

roBman

Received on Monday, 13 January 2014 22:33:02 UTC