panoramic animation

Hi Zack,

There are some impressive visualisations displayed on your web-site. I am particularly interested in your panoramic animation of the pool. could you tell us how you created this animation?

Thanks,
Phil Greenup.

···

As far as modeling water, I recently tried to tackle this for a glare study on an indoor pool. The images of the pool can also be
seen at;

http://www.archenergy.com/sda/designtools/radiance.html ---> Chilson

Hope this helps!
Zack

Phil,

Thanks for the kind words! The panoramic animations are really quite easy with
Radiance. I create a view that is cylindrical, has a horizontal view angle of
360 degrees and a vertical view angle of 90. So for example center.vf reads:

rview -vtc -vp 875 855 141 -vd -1 0 0 -vu 0 0 1 -vh 360 -vv 90

This creates the full 360 deg view of the space....Radiance is simply amazing!
I've tried having a vertical view angle of 180, which in theory could give you
a complete sphere of view angles allowing you to pan down and up as well, but
that does not seem to work and I'm not exactly sure why. You get a very
vertically elongated image.

Then I convert the Radiance images to .jpg format....and I go through the gif
format to do this.

Then there are two programs you can use to view these 360deg images as
panaramic animations.

1) Pixaround.com provides a free panoramic viewer called PixScreen. You just
open any jpg image in the program. Viewing in full 360o mode adjusts the image
to give the correct perspectives, otherwise you get these curvy lines that are
not realistic. PixAround also has a program that I believe is $150US called
PixMaker that then lets you publish these panoramics to a website or create
stand alone executables....they call them "postcards". The stand alone
executables are nice because no programs or plugins are needed to view them.

2) The other option, and I prefer this format because allows some movement up
and down and creates panoramics in the somewhat common quicktime *.mov format,
is PanoWorx. PanoWorx I believe is $200US. This is the format posted on our
website. This program will take any gif or jpg and convert it to .mov format
which can then be viewed with Quicktime.

Both programs can also take any number of images and seam them together to
create panoramics....at some point I would like to add actual photograph
landscape backgrounds to these images. The animation of the new Fraunhofer ISE
Building ( http://www.ise.fhg.de/radiance/ ) has a city backdrop that is really
cool looking. I would be interested to learn how this was done?

I hope this helps! I'm really excited about these panoramics and the
architects I work with have really liked them. It really helps them visualize
what the space will feel like.

Zack

···

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Today's Topics:

   1. panoramic animation (Phillip Greenup)
   2. he.cal file (Phillip Greenup)

--__--__--

Message: 1
Date: Fri, 01 Feb 2002 10:11:55 +1000
From: Phillip Greenup <[email protected]>
To: [email protected]
Subject: [Radiance-general] panoramic animation
Reply-To: [email protected]

Hi Zack,

There are some impressive visualisations displayed on your web-site. I am
particularly interested in your panoramic animation of the pool. could you
tell us how you created this animation?

Thanks,
Phil Greenup.

>As far as modeling water, I recently tried to tackle this for a glare
>study on an indoor pool. The images of the pool can also be
>seen at;
>
>http://www.archenergy.com/sda/designtools/radiance.html ---> Chilson
>
>Hope this helps!
>Zack

--__--__--

Message: 2
Date: Fri, 01 Feb 2002 10:14:31 +1000
From: Phillip Greenup <[email protected]>
To: [email protected]
Subject: [Radiance-general] he.cal file
Reply-To: [email protected]

Hi all,

Has anybody out there ever used the he.cal or he3.cal files with the
brtdfunc primitive? i have been attempting to use it a bit, and found some
troubles. every time i use either of them on my pc based adeline version
of Radiance, the simulation crashes. has anybody else had similar
problems, or had any success?

Thanks again,
Phil Greenup.

--__--__--

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End of Radiance-general Digest

--
Celebrating 20 Years of Improving Building Energy Performance

Zack Rogers
Daylighting Designer/Engineer
Architectural Energy Corporation
2540 Frontier Avenue, Suite 201
Boulder, CO 80301 USA

tel (303)444-4149 ext.235
fax (303)444-4304

Zack Rogers wrote:

I've tried having a vertical view angle of 180, which in theory could give you
a complete sphere of view angles allowing you to pan down and up as well, but
that does not seem to work and I'm not exactly sure why. You get a very
vertically elongated image.

This is due to the fact that you have a completely normal
perspective in vertical direction. A vertical opening angle of
180 degrees would result in an infinitesimally tall picture.
The first diagram (below the Rayfront screenshot) on this
page illustrates the principle:
http://www.schorsch.com/rayfront/manual/viewedit_v.html

The full mechanics of cylindrical views are explained here:
http://www.schorsch.com/rayfront/manual/viewedit_c.html

-schorsch

···

--
Georg Mischler -- simulations developer -- schorsch at schorsch.com
+schorsch.com+ -- lighting design tools -- http://www.schorsch.com/