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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>R32 and F32 are the same.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Some terrain editors like to swap the extension at random – so both
are aliased to the same internal loader.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>IIRC, the internal loader is called R32Loader and is in the
OpenSim.Region.Environment.Modules.World.Terrain.FileSystems directory.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Adam<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> opensim-dev-bounces@lists.berlios.de
[mailto:opensim-dev-bounces@lists.berlios.de] <b>On Behalf Of </b>Diva Canto<br>
<b>Sent:</b> Saturday, 24 May 2008 5:21 PM<br>
<b>To:</b> opensim-dev@lists.berlios.de<br>
<b>Subject:</b> Re: [Opensim-dev] DEM -> Raw<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’d love to have a beta copy of your library. Does it import
directly from USGS DEM files into OpenSim, as if it were just another terrain
format?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>What is the difference between R32 and F32?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>(Sorry for the spam to the mailing list, but I don’t know Adam’s
email address)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> opensim-dev-bounces@lists.berlios.de
[mailto:opensim-dev-bounces@lists.berlios.de] <b>On Behalf Of </b>Frisby, Adam<br>
<b>Sent:</b> Saturday, May 24, 2008 12:32 PM<br>
<b>To:</b> opensim-dev@lists.berlios.de<br>
<b>Subject:</b> Re: [Opensim-dev] DEM -> Raw<o:p></o:p></span></p>
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<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Formats are:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>RAW = LLRAW (documented on the SL wiki) – terrible format best
avoided unless you want to have artists edit the files by hand.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>R32/F32 – float[256,256] – read directly into/out of the
heightmap with a conversion to/from doubles (we store all intermediary values
as doubles internally, but save to/from files and DBs in single precision)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>BMP, PNG, GIF, WMF – saves to/from 256 colour grayscale image,
uses IIRC a scale from 1-128m so each shade is 0.5m (may be 1-511, I forget.
Test. Only really for exporting, importing is going to be lossy)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>JPEG – exports a false-colour coloured heightmap similar to the
above. Same as the world map image.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>TER – Load-only, Terragen – 16bit precision.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I personally recommend R32/F32 as most if not all terrain
editing software can understand it. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Re: USGS DEM (Important distinction as there are several
varieties of DEM, including JDEM, EUDEM, etc) – I have been working on a
supplemental terrain library for OpenSim which has support for USGS DEM files
(and a variety of other more esoteric formats), however it is highly highly
untested – use at own risk. Contact me if you want a beta copy.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Adam<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> opensim-dev-bounces@lists.berlios.de
[mailto:opensim-dev-bounces@lists.berlios.de] <b>On Behalf Of </b>Diva Canto<br>
<b>Sent:</b> Friday, 23 May 2008 10:28 PM<br>
<b>To:</b> opensim-dev@lists.berlios.de<br>
<b>Subject:</b> [Opensim-dev] DEM -> Raw<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Hi,</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>I have a couple
of questions about terrains. Where can I get more information about these raw
formats that OpenSim understands? I tried Googling, but couldn’t really figure
it out. Are these 32-bit floating points, one per what?</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Has anyone tried
to</span><span lang=EN-US> </span><span lang=EN-US style='font-family:"Calibri","sans-serif"'>produce
RAW format files from DEM files? (<a
href="http://en.wikipedia.org/wiki/USGS_DEM">http://en.wikipedia.org/wiki/USGS_DEM</a>)</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Any info
appreciated!</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Thanks,</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:"Calibri","sans-serif"'>Diva / Crista</span><o:p></o:p></p>
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