From: "Chris Zwar" <chris@chriszwar.com>
To: "After Effects Mail List" <AE-List@media-motion.tv>
Importance: Normal
Sensitivity: Normal
Message-ID: <W459818807240481337146181@webmail65>
Date: Wed, 16 May 2012 05:29:41 +0000
Subject: Re:  [AE] Astronomical positioning in AE (script?)
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable

You'd probably want to keep the world size within 65000 pixels in each di=
mension.  Some third party plugins, including particular and optical flar=
es, limit you to maximum values of +/- 32768.

-Chris

-----Original Message-----
From: Dan Ebberts [mailto:debberts@comcast.net]
Sent: Wednesday, May 16, 2012 02:42 PM
To: 'After Effects Mail List'
Subject: Re: [AE] Astronomical positioning in AE (script?)

What form is the data in now? The script could certainly do the conversio=
n from right ascension ,  declination and distance. Then I think all you =
need is to pick a scale factor for the distance to fit everything into a =
AE-sized world. How much data is there?

Dan


From: Stephen van Vuuren 
Sent: Tuesday, May 15, 2012 9:01 PM
To: After Effects Mail List 
Subject: Re: [AE] Astronomical positioning in AE (script?)

Phil,

 
Not in a huge rush and that would certainly get you listed in the film=E2=
=80=99s credits =E2=80=93 thanks so much for the offer. Let me work on th=
e Excel side of things (not that I=E2=80=99m genius there either but it s=
hould be possible) to get it sorted out.

 
I am wondering about the multiplier =E2=80=93 wonder if it needs to be tr=
uly logarithmic giving the size of the universe. The observable universe =
is 46 billion light years across, the average galaxy (e.g. ours) is 100,0=
00 light years, that=E2=80=99s a ratio of 460,000 : 1. 

 
Any idea of maximum XYZ values in AE?

 
stephen van vuuren

336.202.4777

 
http://www.sv2dcp.com/

http://www.sv2studios.com/

http://www.outsideinthemovie.com/

 
A film is =E2=80=93 or should be =E2=80=93 more like music than like fict=
ion. It should be a progression of moods and feelings. The theme, what=E2=
=80=99s behind the emotion, the meaning, all that comes later.

=E2=80=93Stanley Kubrick

 
From: After Effects Mail List [mailto:AE-List@media-motion.tv] On Behalf =
Of Phil Spitler
Sent: Tuesday, May 15, 2012 11:43 PM
To: After Effects Mail List
Subject: Re: [AE] Astronomical positioning in AE (script?)

 
If you can get the data into a spreadsheet into X,Y,Z columns, it would b=
e easy enough to have a script read each row of x,y,z and apply that to t=
he position of a layer.

 
I have done a similar thing taking camera data from a motion control rig =
into AE.

 
If you are not in a huge rush, I could write the script for you once you =
give me a sample of the data.

 
You will probably need some kind of multiplier in there to make the value=
s fit within you AE world.

 
Phil

 
Phil Spitler |   Associate Creative Director  |  Bonfire Labs |  t : 415.=
394.8200  |  c : 415.571.3139  |  Bonfirelabs.com

 
On May 15, 2012, at 8:21 PM, Stephen van Vuuren wrote:


I=E2=80=99m working on the Big Bang section of the film. A local communit=
y college is researching celestial objects that have been imaged. They pr=
ovide two pieces of data =E2=80=93 the spherical position via a value for=
 right ascension & declination. And a distance in megaparsecs.

 
I need to convert this into a manageable form in AE. Obviously, some kind=
 of compensation for

 
I found this on converting to XYZ =E2=80=93 but the how to create the mat=
h to work in AE, I=E2=80=99m not sure what is the best way:

 
http://fmwriters.com/Visionback/Issue14/wbputtingstars.htm

 
I don=E2=80=99t know if this should be setup in Excel and then exported i=
nto AE, or some kind of script built =E2=80=93 which is probably beyond m=
y admittedly poor scripting skills.


Thoughts?

 
stephen van vuuren

336.202.4777

 
http://www.sv2dcp.com/

http://www.sv2studios.com/

http://www.outsideinthemovie.com/

 
A film is =E2=80=93 or should be =E2=80=93 more like music than like fict=
ion. It should be a progression of moods and feelings. The theme, what=E2=
=80=99s behind the emotion, the meaning, all that comes later.

=E2=80=93Stanley Kubrick