Hello,
as you can see from my last mails, I want to simulate a building in
radiance.
I installed radiance with the linux emulator cygwin on my pc and made my
first steps with the a tutorial from the official RADIANCE website.
This tutorial describe to create a room with one window by generate a
rad.-file. I think it will takes a long time, when I want to generate
the hole building with these rad.-files.
Is it possible to accelerate these process? Are there any tools
available, which can input the CAD data in RADIANCE?
Another topic are the lamps in RADIANCE: How is it possible to get lamp
information in RADIANCE? Exits there any tools, too?
I hope anybody have answers of these questions. May be you can recommend
some documents or tutorial to gain more knowledge in these topics.
Thank you in advance.
Marion Kerl
Hi Marion,
There are a number of 3D modeling applications that can be used to develop models that can then be exported and used in Radiance. Some tools that people use to do this include:
1. Autocad
2. Revit
3. Rhino
4. Sketchup
There are certainly other tools that can be used as others will likely point out. Depending on what tool you pick there will be various steps for converting the geometry for use in Radiance. Rhino and Sketchup probably have the most direct path to Radiance currently, however it is certainly possible to go from Autocad or Revit to Radiance as well.
For lighting there are two basic things to understand:
* Layout - layout of different lights in the building can be
accomplished in your modeling application. This is typically done
using triangular reference markers as placeholders for the
lighting distribution
* Lighting Distribution (IES photometry) - with markers indicating
the position of the lights exported to Radiance, lighting
distribution data can then be located relative to these markers.
(using the radiance tools: "replmarks" to locate objects relative
to markers and "ies2rad" to convert ies data files to radiance
light objects)
Please note this is a very cursory explanation to give you some idea that yes it is possible to go from 3D modeling application to Radiance! How much you can accomplish is going to be dictated in part by you experience with 3D modeling tools and a willingness sink yourself into learning Radiance for what you want to accomplish. What kind of 3D modeling applications are you familiar with?
Regards,
-Jack de Valpine
···
--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction
On 9/22/2010 3:52 PM, Kerl, Marion (SCR US EXT) wrote:
Hello,
as you can see from my last mails, I want to simulate a building in radiance.
I installed radiance with the linux emulator cygwin on my pc and made my first steps with the a tutorial from the official RADIANCE website.
This tutorial describe to create a room with one window by generate a rad.-file. I think it will takes a long time, when I want to generate the hole building with these rad.-files.
Is it possible to accelerate these process? Are there any tools available, which can input the CAD data in RADIANCE?
Another topic are the lamps in RADIANCE: How is it possible to get lamp information in RADIANCE? Exits there any tools, too?
I hope anybody have answers of these questions. May be you can recommend some documents or tutorial to gain more knowledge in these topics.
Thank you in advance.
Marion Kerl
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Are there any tools available, which can input the CAD data in RADIANCE?
Check this post and the related thread for various thoughts and opinions: http://www.radiance-online.org/pipermail/radiance-general/2010-August/007173.html
···
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Hi Christopher,
I will confirm that Blender exports OBJ that can be converted to Radiance. It also has a few tools for doing operations on meshes. It is a pretty robust application so there is some learning curve for sure.
Best,
-Jack
···
--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction
On 9/22/2010 4:44 PM, Christopher Rush wrote:
> Are there any tools available, which can input the CAD data in RADIANCE?
Check this post and the related thread for various thoughts and opinions: http://www.radiance-online.org/pipermail/radiance-general/2010-August/007173.html
____________________________________________________________
Electronic mail messages entering and leaving Arup business
systems are scanned for acceptability of content and viruses
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Is it possible to accelerate these process? Are there any tools available, which can input the CAD data in RADIANCE?
Yes. Exporting to OBJ, the old Wavefront format, and importing to Radiance using obj2rad is a popular one right now. If you are using SketchUp, Thomas Bleicher has an export plugin which you can download. There are some AutoCAD export tools--look on the web--, but Autodesk has been making it steadily more and more difficult to distribute any tool without paying royalties to Autodesk, and so far no-one has been willing to take on the problem.
Another topic are the lamps in RADIANCE: How is it possible to get lamp information in RADIANCE? Exits there any tools, too?
Basic tools are part of the package. IES photometry for the luminaire can be bound to a few simple surface forms, which can then be used to wrap visible lamp geometry. ies2rad does the basic job of taking an IES photometry file and converting it to Radiance format, but coding is required to create a lamp that both radiates light and has a visible form.
···
--
Randolph M. Fritz • [email protected]
Environmental Energy Technologies Division • Lawrence Berkeley Labs
I don't know how many people are aware of Meshlab. I use it on OSX and Linux to read, process, and write triangle meshes. It contains a large variety of filters and tools to modify and clean trimeshes, including recalculating normals, removing duplicate nodes and faces, etc. It works on .obj and other mesh formats.
Mark
···
On Wed, 22 Sep 2010, Jack de Valpine wrote:
Hi Christopher,
I will confirm that Blender exports OBJ that can be converted to Radiance. It also has a few tools for doing operations on meshes. It is a pretty robust application so there is some learning curve for sure.
Best,
-Jack
--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction
On 9/22/2010 4:44 PM, Christopher Rush wrote:
> Are there any tools available, which can input the CAD data in RADIANCE?
Check this post and the related thread for various thoughts and opinions: http://www.radiance-online.org/pipermail/radiance-general/2010-August/007173.html
____________________________________________________________
Electronic mail messages entering and leaving Arup business
systems are scanned for acceptability of content and viruses
_______________________________________________
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[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general
There is even anelaborate Radiance-frontend for Blender.
http://www.bozzograo.net/radiance/index.php?module=Pages&func=display&pageid=1
I have been using formZ, which combines CAD and modeling functionality, and exported obj files. Obj files are the best supported input besides the native Radiance formats rad and mgf.
However, I think it is a good idea for a beginner to follow the tutorial and create at least one scene by hand. It helps understand what geometry will be in Radiance, give some understanding also on limitations when using CAD, and may be helpful if you ever expect problems.
Cheers, Lars.
···
--
Dipl.-Ing. Architect Lars O. Grobe
On Sep 22, 2010, at 22:56, Jack de Valpine <[email protected]> wrote:
Hi Christopher,
I will confirm that Blender exports OBJ that can be converted to Radiance. It also has a few tools for doing operations on meshes. It is a pretty robust application so there is some learning curve for sure.
Best,
-Jack
--
# Jack de Valpine
# president
#
# visarc incorporated
# http://www.visarc.com
#
# channeling technology for superior design and construction
On 9/22/2010 4:44 PM, Christopher Rush wrote:
> Are there any tools available, which can input the CAD data in RADIANCE?
Check this post and the related thread for various thoughts and opinions: http://www.radiance-online.org/pipermail/radiance-general/2010-August/007173.html
____________________________________________________________ Electronic mail messages entering and leaving Arup business systems are scanned for acceptability of content and viruses
_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general
_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general