[Radiance-general] Re: Radiance-general Digest, Vol 45, Issue 1
Evangelos Christakou
vangelis at unb.br
Thu Nov 1 13:48:05 PDT 2007
Hi all
At first I`d like to say thank you very much, Thomas for your job!!!!
Google Sketchup (free) doesnt offer location settings (LAT/LONG), so SKY
settings are difficult!!!!
You must have SKETCHUP Pro version to do it.
Thomas, there is a way to overcome this limitation?
Regards,
Vangelis
2007/11/1, radiance-general-request at radiance-online.org <
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> Today's Topics:
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> 1. Re: Sketchup to Radiance for win users? (Thomas Bleicher)
> 2. RE: Sketchup exporter script (Terrance McMinn)
> 3. Aw: [Radiance-general] RE: Sketchup exporter script
> (tbleicher at arcor.de)
> 4. Aw: [Radiance-general] RE: Sketchup exporter script
> (Mardaljevic John)
> 5. Re: Aw: [Radiance-general] RE: Sketchup exporter script
> (Rob Guglielmetti)
> 6. Aw: [Radiance-general] RE: Sketchup exporter script
> (Mardaljevic John)
> 7. Re: RE: Sketchup exporter script (Thomas Bleicher)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 31 Oct 2007 19:50:37 +0000
> From: Thomas Bleicher <tbleicher at arcor.de>
> Subject: Re: [Radiance-general] Sketchup to Radiance for win users?
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Message-ID: <108AB72E-6F19-4B5B-AD9D-97C4E74F8184 at arcor.de>
> Content-Type: text/plain; charset=ISO-8859-1; delsp=yes; format=flowed
>
>
> On 31 Oct 2007, at 14:24, Valère Paupelin-Huchard wrote:
>
> > Hello everybody,
> > I am trying to find a workflow tutorial of radiance after a
> > sketchup export on windows...
> > Do you have any idea?
> > Someone could give me the main steps?
>
> If this is about Radiance in general buy the book
>
> 'Rendering with Radiance' by Ward/Shakespeare
>
> or see here:
>
> http://luminance.londonmet.ac.uk/learnix/docs/radtutorial_basic.pdf
>
>
> If this is about my script to export from Sketchup, here's the idea:
>
> The script creates a common file structure of Radiance scene files
> where you have at the top level
>
> - a materials.rad file with all material definitions
> - a <scenename>.rad file with references to the geometry files
> - a <scenename>.rif file as input for 'rad'
> - the 'objects/' directory with the actual geometry
> - the 'skies/' directory with the sky definition
> - the 'views/' directory with one file per exported perspective
> - a bunch of other directories
>
> Because the script is incomplete the first thing you have to do
> is to replace all the material definitions in the 'materials.rad'
> file with actual physical materials. You can find a number of
> materials in the Radiance distribution or on the internet. It's
> worth to reduce the number of materials in the model before exporting.
>
> The next thing you may want to do is to add some keywords to the
> <scenename>.rif file. There are some standard options which I forgot
> to add. You can use the free Radiance Control Panel to view and
> change the settings in a GUI:
>
> http://squ1.com/download?radiancecp
>
> If you want to do actual daylight analysis check also the parameters
> of the sky description. In particular the meridian and skytype are
> more or less guesswork.
>
> If you have checked all the above, go to the directory of the '.rif'
> and '.rad' file. All references in the '.rad' file assume that your
> working directory is this directory when you start Radiance apps.
>
> To start an interactive preview with rvu (not available on Windows)
> type
>
> rad -o x11 <scenename>.rif
>
> To render one perspective (as listed in the '.rif' file) type
>
> rad -v <viewname> <scenename>.rif
>
> To render all pictures type
>
> rad <scenename>.rif
>
> All these commands will work on Linux/OS X. I have not used Radiance
> on Windows yet (as cygwin or mingw) but I think the commands should
> behave similarly to the Unix versions.
>
> Once you have rendered the images you can download the Radiance image
> viewer from Square1 to view and analyse your images:
>
> http://squ1.com/download?radianceiv
>
> The viewer that comes as part of Radzilla should also work on Windows.
> Everyone else uses ximage.
>
>
> One feature I have not mentioned yet is the feature to export points
> on a working plane for calculation with rtrace. You have to create
> a layer called 'numeric' in your SketchUp scene. All the polygons on
> this layer will be exported as a grid of points with 0.25m distance.
> The files will be exported to the 'numeric/' folder with a filename
> based on the group or scene name.
>
> Example:
>
> You have created a room with windows etc. Copy the 'floor' of the room,
> move it 0.75m up (Z-axis) and create an offset of 0.4m from the edge.
> You have now a plane floating in space. Move this plane to the layer
> 'numeric' and create a group out of the plane only or the plane and
> the room geometry (recommended because you can move or copy the whole
> ensemble at once). Give the group a name (say 'room1' and when you
> export the scene make sure the 'numeric/' level is visible.
>
> This will create the file 'numeric/room1.fld' with one line for each
> point in the form 'x y z 0 0 1'. This format can easily be piped to
> rtrace for calculation:
>
> rtrace -ab 3 -ov <scenename>.oct < numeric/room1.fld > numeric/
> room1.irr
>
> (provided that there is already a <scenename>.oct). Don't forget to
> check/edit the material for your window. It's very likely that your
> glass material is not at all transparent.
>
> If you modify this a bit and use '-oodv' as the output format you can
> use the 'Plugins/Radiance/numeric input' menu entry to create a 3D
> surface
> from the calculated values.
> ... perhaps. This is highly experimental. Use at your own risk.
>
>
> Have fun and report errors,
> Thomas
>
> --
> When I'm old I want to be a wiki page at
> http://www.bozzograo.net/radiancewiki/doku.php.
> -- anonymous email
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 1 Nov 2007 14:10:35 +0900
> From: "Terrance McMinn" <T.McMinn at curtin.edu.au>
> Subject: [Radiance-general] RE: Sketchup exporter script
> To: <radiance-general at radiance-online.org>
> Message-ID:
> <
> 092BF7A1BC389E489A69DC764F23CD870D5C7969 at exmsp2.perth.ad.curtin.edu.au>
>
> Content-Type: text/plain; charset="us-ascii"
>
> Hello All,
>
> Thomas you have made an excellent contribution to the radiance community
> with your SketchUP exporter. I assume this script would also work with
> the free Google Version of SketchUP as well. That software was of
> limited use to radiance modelling as it did not have the 3DS converter
> available in the PRO version.
>
> A point here, for the Google SketchUP (free version) users would be for
> the user to manually modify the 'sky' file for location and orientation
> as that option works differently from the PRO version of SketchUP.
>
> To this effect a couple of extra comments in the 'sky' file for the
> novices would be useful.
>
> With regards to accuracy of modelling using SketchUP, simply use the
> mouse to indicate direction and then enter the distance with the
> keyboard. This allows wonderful unit conversions on the fly during data
> entry. For example say your units are in metres and you want an offset
> of 50mm, type 50mm or 2" and SketchUP will do the rest! It even
> understands entries such as 2",100mm for a rectangle.
>
>
> Regards
>
> Terry Mc Minn
> Faculty of Built Environment, Art and Design
> Curtin University of Technology
> GPO Box U 1987 Perth 6845 Western Australia
> Email: T.Mcminn at curtin.edu.au
> CRICOS Provider Code: 00301J
>
>
>
> ------------------------------
>
> Message: 3
> Date: Thu, 1 Nov 2007 14:48:10 +0100 (CET)
> From: tbleicher at arcor.de
> Subject: Aw: [Radiance-general] RE: Sketchup exporter script
> To: radiance-general at radiance-online.org
> Message-ID: <18354529.1193924890340.JavaMail.ngmail at webmail10>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Terrance McMinn wrote
> > Hello All,
> >
> > Thomas you have made an excellent contribution to the radiance community
> > with your SketchUP exporter. I assume this script would also work with
> > the free Google Version of SketchUP as well. That software was of
> > limited use to radiance modelling as it did not have the 3DS converter
> > available in the PRO version.
>
> Yes, of course. There would be no motivation for me to write a script
> that doesn't work on the free version. But from the Ruby point of view
> both versions are identical.
>
> > A point here, for the Google SketchUP (free version) users would be for
> > the user to manually modify the 'sky' file for location and orientation
> > as that option works differently from the PRO version of SketchUP.
>
> I am not aware of different settings between the two versions. The script
> uses information stored in the 'location' and 'shadow' settings. You can
> modify the sky appearance in SketchUp but I do not use this information
> and don't even know if it's accessible via scripting.
>
> > To this effect a couple of extra comments in the 'sky' file for the
> > novices would be useful.
>
> I can certainly add a few comments ...
>
> About the interface 'design':
>
> Sketchup has a very limited but simple dialog toolbox which is what I'm
> using
> right now. It looks odd but it does the trick. More soffisticated dialogs
> are
> possible with DHTML (JavaScript - the 'tip of the day' is an example for
> that)
> but I won't start working on that before I have a good idea about which
> options
> to present. And I have to be sure someone out there needs it because it
> would
> be useless for me.
>
> Regards,
> Thomas
>
> Viel oder wenig? Schnell oder langsam? Unbegrenzt surfen + telefonieren
> ohne Zeit- und Volumenbegrenzung? DAS TOP ANGEBOT FÜR ALLE NEUEINSTEIGER
> Jetzt bei Arcor: günstig und schnell mit DSL - das All-Inclusive-Paket
> für clevere Doppel-Sparer, nur 29,95 € inkl. DSL- und ISDN-Grundgebühr!
> http://www.arcor.de/rd/emf-dsl-2
>
>
>
> ------------------------------
>
> Message: 4
> Date: Thu, 1 Nov 2007 14:57:01 +0000
> From: Mardaljevic John <jm at dmu.ac.uk>
> Subject: Aw: [Radiance-general] RE: Sketchup exporter script
> To: radiance-general at radiance-online.org
> Message-ID: <A7CC5EAE-01CA-4FCE-97EA-89272CF473D8 at dmu.ac.uk>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>
> Hi Thomas,
>
> Thanks for making the SU exporter plugin available -- I just tried
> it out on a fairly complex model. The default mode seems to be to
> export surfaces by material colour rather than layer name (unless
> I've missed something). Is there (or will there be) an option to
> export surfaces by layer name rather than material colour?
>
> Cheerio,
>
> -John
>
> -----------------------------------------------
> Dr. John Mardaljevic
> Senior Research Fellow
> Institute of Energy and Sustainable Development
> De Montfort University
> The Gateway
> Leicester
> LE1 9BH, UK
> +44 (0) 116 257 7972
> +44 (0) 116 257 7981 (fax)
>
> jm at dmu.ac.uk
> http://www.iesd.dmu.ac.uk/~jm
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Thu, 01 Nov 2007 09:09:42 -0600
> From: Rob Guglielmetti <rpg at rumblestrip.org>
> Subject: Re: Aw: [Radiance-general] RE: Sketchup exporter script
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Message-ID: <4729EC36.2000604 at rumblestrip.org>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> tbleicher at arcor.de wrote:
> > Terrance McMinn wrote
> >
> >> Hello All,
> >>
> >> Thomas you have made an excellent contribution to the radiance
> community
> >> with your SketchUP exporter. I assume this script would also work with
> >> the free Google Version of SketchUP as well. That software was of
> >> limited use to radiance modelling as it did not have the 3DS converter
> >> available in the PRO version.
> >>
> >
> > Yes, of course. There would be no motivation for me to write a script
> > that doesn't work on the free version. But from the Ruby point of view
> > both versions are identical.
> >
>
> Yeah, I kinda wish we knew about this script about ten days ago, because
> we bought the pro version mainly for the export capabilities! Oh well...
>
> And John M, how complex was your model? We just successfully used
> Thomas' script to export an 80MB SketchUp model to Radiance! Worked
> very well. I agree with John, a choice of "by color" OR "by layer"
> would be very helpful.
>
>
>
> ------------------------------
>
> Message: 6
> Date: Thu, 1 Nov 2007 16:18:22 +0000
> From: Mardaljevic John <jm at dmu.ac.uk>
> Subject: Aw: [Radiance-general] RE: Sketchup exporter script
> To: radiance-general at radiance-online.org
> Message-ID: <0AF2CE55-A506-4A4A-BC34-DC1B6B20481D at dmu.ac.uk>
> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
>
> Hi Rob,
>
> > And John M, how complex was your model? We just successfully used
> > Thomas' script to export an 80MB SketchUp model to Radiance!
>
> My SU model was only a 1/3 the size of yours: about 26Mb (Edges
> 124168, Faces 60278). The Radiance export took about 13 mins on a
> 2.16GHz C2D MB (2Gb RAM). The exported rad file was of size 13Mb and
> contained 60278 polygons. For comparison, exporting the same model
> to Radiance via 3DS (& MGF) was much quicker but gave a rad file of
> size 38Mb with 188043 polygons (because of the conversion to
> triangles, of course).
>
> The smaller rad file did produce a number of "non-planar vertex"
> warnings (as one might expect). I haven't tried out the model much
> since I would need to first change all the material colours in SU to
> match the scheme used for the layers.
>
> Hats off to TB for this very handy utility!
>
> -John
>
> -----------------------------------------------
> Dr. John Mardaljevic
> Senior Research Fellow
> Institute of Energy and Sustainable Development
> De Montfort University
> The Gateway
> Leicester
> LE1 9BH, UK
> +44 (0) 116 257 7972
> +44 (0) 116 257 7981 (fax)
>
> jm at dmu.ac.uk
> http://www.iesd.dmu.ac.uk/~jm
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Thu, 1 Nov 2007 18:49:28 +0000
> From: Thomas Bleicher <tbleicher at arcor.de>
> Subject: Re: [Radiance-general] RE: Sketchup exporter script
> To: Radiance general discussion <radiance-general at radiance-online.org>
> Message-ID: <BF14CC39-FA9B-4E3D-8A04-56F9A5F3C8F7 at arcor.de>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
>
> On 1 Nov 2007, at 14:57, Mardaljevic John wrote:
>
> > Hi Thomas,
> >
> > Thanks for making the SU exporter plugin available -- I just
> > tried it out on a fairly complex model. The default mode seems
> > to be to export surfaces by material colour rather than layer
> > name (unless I've missed something).
>
> It's neither. The one and only mode exports to files based on the
> group or component instance name which is generated if it's not set.
>
> This allows you to use the Sketchup hierarchy to model efficient
> Radiance scenes with '!xform'. At the moment only components can
> be reused but Sketchup keeps track of identical groups as well;
> I just can't get this information from the API.
>
> > Is there (or will there be) an option to export surfaces by
> > layer name rather than material colour?
>
> Since you already got another one voting for it I'll look into it
> at the weekend. Should be easy to do.
>
> Thomas
>
>
>
>
> ------------------------------
>
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>
> End of Radiance-general Digest, Vol 45, Issue 1
> ***********************************************
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