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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi<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">Today i got an (maybe stupid) idea:<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">The solution of rescaling my double data to get correct viewing is not very elegant: All filter/sources settings will be in wrong relation (e.g.
if I want to insert a sphere of radius 1, or if I want to measure my data using ruler, or if I want to watch my data in spreadsheet view)<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">Wouldn’t it better to write a “view plugin” where all data firstly is rescaled/mean subtracted before sending to 3d polydata mapper? In that case
all filter settings, ruler and so on will also work like expected. I never wrote a view plugin but is this in principle possible? Or should I use a “representation plugin” for that.....<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">Any suggestions?
<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">Best regards,<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">Gerald Lodron<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"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="DE" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span lang="DE" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Berk Geveci [mailto:berk.geveci@kitware.com]
<br>
<b>Gesendet:</b> Dienstag, 14. April 2015 18:16<br>
<b>An:</b> Lodron, Gerald<br>
<b>Cc:</b> Paraview User (paraview@paraview.org); Paraview Developer (Paraview-developers@paraview.org)<br>
<b>Betreff:</b> Re: [Paraview-developers] ParaView and double precision Rendering<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">OpenGL does not support double precision. VTK does not do anything special in handling large coordinates and passes them to OpenGL directly. So currently, you have to handle this yourself by rescaling your data.<o:p></o:p></p>
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<p class="MsoNormal">Best,<o:p></o:p></p>
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<p class="MsoNormal">-berk<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Apr 13, 2015 at 1:25 PM, Lodron, Gerald <<a href="mailto:Gerald.Lodron@joanneum.at" target="_blank">Gerald.Lodron@joanneum.at</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal">Hello<br>
<br>
I made a paraview reader plugin which loads Point data of type double from an ASCII file (can be choosen as checkbox in reader parameter gui). It is important that point data type is double since our values have a huge offset, e.g.<br>
<br>
Coordinate in float: 3376382.75 -325198.59375 -121298.125<br>
Coordinate in double: 3376382.849028525874 -325198.60899497801438 -121298.12806414699298<br>
(same ASCII input file of type double, above printings come from spreadsheet view so loading is correct)<br>
(all my points have such small changes, I definitely can see those small changes in 3d)<br>
<br>
The problem is: I load the dataset once in float and once in double ( I checked result in spreadsheed view) I cannot see any differences in 3d renderer when I swap visibility of float and double input (but you can see in spreadsheet). Is the double precision
rendering not correct/not supported?<br>
Any ideas?<br>
<br>
Best regards,<br>
<br>
Gerald Lodron<br>
Machine Vision Applications<br>
DIGITAL - Institute for Information and Communication Technologies<br>
<br>
JOANNEUM RESEARCH Forschungsgesellschaft mbH<br>
Steyrergasse 17, 8010 Graz, AUSTRIA<br>
<br>
phone: +43-316-876-1751 <br>
fax: +43-316-876-1751<br>
web: <a href="http://www.joanneum.at/digital" target="_blank">http://www.joanneum.at/digital</a><br>
e-mail: <a href="mailto:gerald.lodron@joanneum.at">gerald.lodron@joanneum.at</a><br>
<br>
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