CZML Orientation Reference Frame

CesiumJS
1

Hi,

What is the reference attitude for the orientation property[1] in czml?
I tried specifying quaternions w.r.t the inertial frame but that didn't
produce the correct result. Also, how do I use the 'axes' property.

[OT] Every time I try to subscribe to this list I get stuck in an
infinite loop of confirming my email address. Could one of the
moderators subscribe me?

Thanks,
Evan Ward

[1]
https://github.com/AnalyticalGraphicsInc/cesium/wiki/CZML-Content#orientation

2

Hi Evan,

I sent you an invite for this mailing list. Let me know if you have any problems.

Someone will followup to answer your CZML question.

Regards,

Patrick

3

After reading some of the source code and trying lots of different
frames I figured it out for my self. Czml uses an Earth Centered Earth
Fixed reference frame for orientation. It is also important to note
whether the vector or the frame is moving. Czml uses a fixed frame and
moving vectors. I was using fixed vectors and moving frames. To convert
just use the inverse rotation.

Regards,
Evan

4

Hi,I want to ask that how to inverse rotaion ?

在 2013年11月7日星期四UTC+8上午5时06分32秒，Evan Ward写道：

5

Hi,

6

just use the hypercomplex quaternion conjugate, i.e. multiply the vector
parts of the quaternion by -1.

Wow this sounds like the show Big Bang Theory
<http://the-big-bang-theory.com/&gt; :slight_smile:

Kind regards,
René

--

Regards,
Balasubramaniam Natarajan
www.blog.etutorshop.com