mapping a picture on a curved surface

radiance-general
1

Dear all,

Tiffany Stetiu-Otis, an architecture student in my Lighting Course at
McGill, would like to map an image onto a half-cylinder shaped ceiling
in a Radiance scene. Are there any cal files available for here to do
so? Any tips would be very much appreciated.

Christoph
Christoph Reinhart, Ph.D.
Associate Research Officer National Research
Council Canada Institute for Research in Construction
Adjunct Professor McGill University
School of Architecture
1200 Montreal Road M-24, Ottawa Ontario K1A 0R6, Canada
tel: (613) 993-9703 fax: (613) 954 3733
[email protected]
<blocked::mailto:[email protected]>

Lightswitch Wizard (initial design) www.buildwiz.com
<blocked::http://www.buildwiz.com/>
DAYSIM (expert software) www.daysim.com
<blocked::http://www.daysim.com/>

2

Christoph,

this is an easy, quick and dirty trick, i.e. no cal file are needed.

BTW you will need to change coefficients for Px and Py as needed...

ciao,

G.

···

------------------------------------------------------------------------
-----------

void colorpict colormap

7 red green blue pattern.pic . '1/(2*PI)*acos(Px)' 'Py'

0

0

colormap plastic grey

0

0

5 .5 .5 .5 0 0

grey cylinder surface

0

0

7

0 0 0

0 1 0

1

------------------------------------------------------------------------
---------------

________________________________

From: [email protected]
[mailto:[email protected]] On Behalf Of
Reinhart, Christoph
Sent: 29 November 2005 13:53
To: [email protected]
Cc: [email protected]
Subject: [Radiance-general] mapping a picture on a curved surface

Dear all,

Tiffany Stetiu-Otis, an architecture student in my Lighting Course at
McGill, would like to map an image onto a half-cylinder shaped ceiling
in a Radiance scene. Are there any cal files available for here to do
so? Any tips would be very much appreciated.

Christoph

Christoph Reinhart, Ph.D.

                Associate Research Officer National
Research Council Canada Institute for Research in Construction

Adjunct Professor McGill University
School of Architecture

1200 Montreal Road M-24, Ottawa Ontario K1A 0R6, Canada

tel: (613) 993-9703 fax: (613) 954 3733
[email protected]
<blocked::mailto:[email protected]>

Lightswitch Wizard (initial design) www.buildwiz.com
<blocked::http://www.buildwiz.com/>

DAYSIM (expert software) www.daysim.com
<blocked::http://www.daysim.com/>

____________________________________________________________
Electronic mail messages entering and leaving Arup business
systems are scanned for acceptability of content and viruses