<div dir="ltr">"MaximumDistance is a percentage"<br><br><br>% of what?<br><br>Jothy<br><br><br><div class="gmail_quote">On Wed, Jul 11, 2012 at 1:10 PM, Bill Lorensen <span dir="ltr"><<a href="mailto:bill.lorensen@gmail.com" target="_blank">bill.lorensen@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">MaximumDistance is clamped to be within 0 and 1.<br><br><div class="gmail_quote">On Wed, Jul 11, 2012 at 8:07 AM, Jothybasu Selvaraj <span dir="ltr"><<a href="mailto:jothybasu@gmail.com" target="_blank">jothybasu@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">So, for instance what does 10.0 mean?<br><br>Is it multiplication of the bounds of vtkPolyData?<br><br>
with bounds [-5,5,-5,5,-5,5] the operation will be applied in [-50,50,-50,50,-50,50]<br>
<br>Thanks<br><br>
Jothy <br><div><div><br><div class="gmail_quote">On Wed, Jul 11, 2012 at 1:03 PM, Bill Lorensen <span dir="ltr"><<a href="mailto:bill.lorensen@gmail.com" target="_blank">bill.lorensen@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
MaximumDistance is a percentage, not an absolute distance. The documentation is not clear about this.<div><div><br><br><div class="gmail_quote">On Wed, Jul 11, 2012 at 3:45 AM, Roman Grothausmann <span dir="ltr"><<a href="mailto:roman.grothausmann@helmholtz-berlin.de" target="_blank">roman.grothausmann@helmholtz-berlin.de</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear mailing list members,<br>
<br>
<br>
Could it be that in vtkImplicitModeller.cxx there is a bug that causes the maximum distance (that is calculated and saved in the image) to be bigger than specified with SetMaximumDistance()?<br>
<br>
>From the description of the filter and its parameters and also from the comments in the source I would expect that the output stored in 32-bit real does not contain values above SetMaximumDistance() except for the "background" value.<br>
<br>
Having checked the source it seems to me that the squared distance was always very carefully assigned to a variable name ending with 2 (e.g. maxDistance2). However at line 967 there is a *= assignment (see patch below). Removing the '*', the output image of the filter then fulfils my expectations mentioned above.<br>
<br>
Could the '*' be a bug?<br>
<br>
--- VTK_orig/Hybrid/<u></u>vtkImplicitModeller.cxx 2012-05-12 13:59:27.000000000 +0200<br>
+++ VTK/Hybrid/<u></u>vtkImplicitModeller.cxx 2012-07-10 16:22:21.060066823 +0200<br>
@@ -967,7 +967,7 @@<br>
}<br>
}<br>
<br>
- maxDist *= this->MaximumDistance;<br>
+ maxDist = this->MaximumDistance;<br>
<br>
// Set volume origin and data spacing<br>
output->SetOrigin(this-><u></u>ModelBounds[0],<br>
<br>
<br>
<br>
Happy coding<br>
Roman<br>
<br>
-- <br>
Dr. Roman Grothausmann<br>
<br>
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH<br>
Bereich Funktionale Materialien<br>
Institut für angewandte Materialforschung<br>
Hahn-Meitner-Platz 1<br>
D-14109 Berlin <br>
<br>
(früher Hahn-Meitner-Institut und BESSY)<br>
<br>
<br>
Tel.: <a href="tel:%2B49-%280%2930-8062-42816" value="+4930806242816" target="_blank">+49-(0)30-8062-42816</a><br>
Fax.: <a href="tel:%2B49-%280%2930-8062-43059" value="+4930806243059" target="_blank">+49-(0)30-8062-43059</a><br>
<br>
Vorsitzender des Aufsichtsrats: Prof. Dr. Dr. h.c. mult. Joachim Treusch<br>
Stellvertretende Vorsitzende: Dr. Beatrix Vierkorn-Rudolph<br>
Geschäftsführer: Prof. Dr. Anke Rita Kaysser-Pyzalla, Dr. Ulrich Breuer<br>
Sitz der Gesellschaft: Berlin<br>
Handelsregister: AG Charlottenburg, 89 HRB 5583<br>
<br>
<br>
______________________________<u></u>_________________<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/<u></u>opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the VTK FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_<u></u>FAQ</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/<u></u>listinfo/vtkusers</a><br>
</blockquote></div><br><br clear="all"><div><br></div></div></div><span><font color="#888888">-- <br>Unpaid intern in BillsBasement at noware dot com<br><br>
</font></span><br>_______________________________________________<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the VTK FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
<br></blockquote></div><br><br clear="all"><span class="HOEnZb"><font color="#888888"><br>-- <br></font></span></div></div><span class="HOEnZb"><font color="#888888"><span><font color="#888888"><div dir="ltr">Jothybasu Selvaraj<br>
PhD Student<br>University of Liverpool<br>UK<br></div><br>
</font></span></font></span></div><span class="HOEnZb"><font color="#888888">
</font></span></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br>Unpaid intern in BillsBasement at noware dot com<br><br>
</font></span></blockquote></div><br><br clear="all"><br>-- <br><div dir="ltr">Jothybasu Selvaraj<br>PhD Student<br>University of Liverpool<br>UK<br></div><br>
</div>