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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim,</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>My preference, in the first instance,
would be to improve or expand the online documentation (header file). Some
classes e.g. vtkAssignAttribute contain example code fragments. I am sure that
if you submitted documentation changes in bite size chunks through </span></font><u><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'><a href="http://www.vtk.org/Bug">http://www.vtk.org/Bug</a></span></font></u><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
</span></font><font size=2 color=navy face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:navy'>it would be considered as a worthwhile and
successful conclusion to a discussion thread. However, I acknowledge that this
is not a suitable location for more general principals, techniques or
workarounds, in which case </span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><a
href="http://www.vtk.org/Wiki/VTK_FAQ">http://www.vtk.org/Wiki</a></span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'> could be investigated.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>John.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> vtkusers-bounces@vtk.org
[mailto:vtkusers-bounces@vtk.org] <b><span style='font-weight:bold'>On Behalf
Of </span></b>James C Robinson<br>
<b><span style='font-weight:bold'>Sent:</span></b> 22 April 2005 11:04<br>
<b><span style='font-weight:bold'>To:</span></b> 'John Platt'<br>
<b><span style='font-weight:bold'>Cc:</span></b> Vtk Users<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [vtkusers] Scaling
glyphs[Scanned]</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>John,</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>I wish I could get a copy of the tin……. I am not the
only one who feels that VTK is underutilised because there isn’t enough
documentation. I have the VTK book, but you simply won’t get that kind of
detail in it (go on – make me out to be foolish by citing the
page….). Even in the online documentation there is only a cryptic
indication of what the relationship between ClampingOn and Scaling (everything
is obvious in retrospect). The route that the method names etc. indicate for
toggling between direction only and magnitude representation is the one I
originally took. You have to admit that it would take a deeper knowledge to
figure out your (John Biddiscombe’s) elegant solution. Now, I have
encountered before the attitude that “nothing comes for free” and
“you have to make the effort” – it is almost “you have
to pay your dues” philosophy. However, that leads to a lot of replication
of effort. The users group is good and sometimes one can be successful in
getting a solution (as I have just experienced) – but not always (or even
50% of the time). </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>If there was somewhere to (easily) post the type of code I just
wrote (the three lines in my last e-mail) under the topic area of vtkGlyph3D with
the heading “Direction only vectors” or a number of indicative
titles that would allow an easy search – it would help us get mileage out
of all our efforts. This, of course, goes to “who organises it- on what
site?” and then gets into the area of Kitware’s business model. I
would pay a few hundred dollars for a license for VTK to have such a service. I
am a middle level user (perhaps an overstatement of my knowledge and ability)
which means I am between the level whereby I can justify (need to) paying $1000s
for support (or development) or smart guys who have a very in-depth knowledge
(and thus need almost no support).</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>There is a wide range of level of user and VTK would be even more
successful if it was better documented so that medium level users (such as I
might be) can use what is in the tin to its full potential.</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>Regards,</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>Jim</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
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<div>
<p class=MsoNormal style='margin-left:36.0pt'><b><font size=3 color=navy
face=Arial><span lang=FR style='font-size:12.0pt;font-family:Arial;color:navy;
font-weight:bold'>James C Robinson</span></font></b><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'>, </span></font></b></p>
<p class=MsoNormal style='margin-left:36.0pt'><b><font size=3 color=navy
face=Wingdings><span lang=EN-GB style='font-size:12.0pt;font-family:Wingdings;
color:navy;font-weight:bold'>+</span></font></b><b><font color=navy><span
lang=FR style='color:navy;font-weight:bold'> 42
Rivergrove</span></font></b><b><font size=2 color=navy face=Arial><span
lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>,</span></font></b></p>
<p class=MsoNormal style='margin-left:36.0pt'><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'> <ns0:City u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:City u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z">Glanmire</ns0:place></ns0:City></ns0:place></ns0:City>,</span></font></b></p>
<p class=MsoNormal style='margin-left:36.0pt'><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'> </span></font></b><b><font
size=2 color=navy face=Arial><span lang=EN-GB style='font-size:10.0pt;
font-family:Arial;color:navy;font-weight:bold'>Co. <ns0:City u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:City u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z">Cork</ns0:place></ns0:City></ns0:place></ns0:City>,</span></font></b></p>
<p class=MsoNormal style='margin-left:36.0pt'><b><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy;font-weight:bold'> <ns0:place u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z">Eire</ns0:place></ns0:place></span></font></b></p>
<p class=MsoNormal style='margin-left:36.0pt'><b><font size=3 color=navy
face="Wingdings 2"><span lang=EN-GB style='font-size:12.0pt;font-family:"Wingdings 2";
color:navy;font-weight:bold'>'</span></font></b><b><font color=navy face=Arial><span
lang=EN-GB style='font-family:Arial;color:navy;font-weight:bold'>
+353 21 4822028</span></font></b></p>
<p class=MsoNormal style='margin-left:36.0pt'><b><font size=3 color=navy
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt;color:navy;
font-weight:bold'> +353 87
2393010</span></font></b></p>
<p class=MsoNormal style='margin-left:36.0pt'><b><font size=3 color=navy
face=Wingdings><span lang=EN-GB style='font-size:12.0pt;font-family:Wingdings;
color:navy;font-weight:bold'>-</span></font></b><b><font color=navy face=Arial><span
lang=EN-GB style='font-family:Arial;color:navy;font-weight:bold'>
</span></font><ns0:PersonName u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:PersonName u1:insAuthor="Jim" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Jim" u1:endInsDate="2005-04-22T10:48:00Z"></ns0:PersonName></b><b><font
color=blue><span lang=EN-GB style='color:blue;font-weight:bold'><a
href="mailto:jrobinson@eircom.net">jrobinson@eircom.net<font color=black><span
style='color:windowtext;text-decoration:none'></ns0:PersonName>></span></font></a></span></font></b><b><font
color=navy face=Arial><span lang=EN-GB style='font-family:Arial;color:navy;
font-weight:bold'> </span></font></b></p>
</div>
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<div>
<div style='margin-left:36.0pt'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center>
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<p class=MsoNormal style='margin-left:36.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> John
Platt [mailto:jcplatt@lineone.net] <br>
<b><span style='font-weight:bold'>Sent:</span></b> 22 April 2005 09:08<br>
<b><span style='font-weight:bold'>To:</span></b> j.robinson@kepler-systems.com<br>
<b><span style='font-weight:bold'>Cc:</span></b> vtkusers@vtk.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [vtkusers] Scaling
glyphs[Scanned]</span></font></p>
</div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Hi Jim,</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Flattery
will get you everywhere </span></font><font size=2 color=navy face=Wingdings><span
style='font-size:10.0pt;font-family:Wingdings;color:navy'>J</span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'> but credit to John Biddiscombe – vtkGlyph3D does just what
it says on the tin!</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>John.</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> James C Robinson
[mailto:j.robinson@kepler-systems.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> 21 April 2005 17:15<br>
<b><span style='font-weight:bold'>To:</span></b> 'John Platt'<br>
<b><span style='font-weight:bold'>Cc:</span></b> Vtk Users<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [vtkusers] Scaling
glyphs[Scanned]</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>John,</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>Many thanks for your reply. Your solution will work (I think). I
have made a crude test and it behaves as desired. The subtlety is that, when one
wants an application that allows the toggling between two representations of a
vector field (scaled according to magnitude or not) the simple way is to turn </span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>SetScaleModeToDataScalingOff). However, this leads to the behaviour
that wanted to avoid (source points outside the field being represented). Using
your approach means effectively that we leave the SetScaleModeToDataScalingOn
and when we want an orientation only representation we set the clamping range
to be very tiny (say SetRange(0.0,minimum value). In this way all 0.0 magnitude
vectors are not represented and any others are shown the same size.</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>I hope
this clarifies the clarification further. Again many thanks. It is not
necessary to always no the answer, but it really helps to know a man/woman who
does….</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Jim</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> </span></font></p>
<div>
<div>
<div>
<div>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=3 color=navy
face=Arial><span lang=FR style='font-size:12.0pt;font-family:Arial;color:navy;
font-weight:bold'>James C Robinson</span></font></b><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'>, </span></font></b></p>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=3 color=navy
face=Wingdings><span lang=EN-GB style='font-size:12.0pt;font-family:Wingdings;
color:navy;font-weight:bold'>+</span></font></b><b><font color=navy><span
lang=FR style='color:navy;font-weight:bold'> 42
Rivergrove</span></font></b><b><font size=2 color=navy face=Arial><span
lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>,</span></font></b></p>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'> <ns0:City u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:City u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z">Glanmire</ns0:place></ns0:City></ns0:place></ns0:City>,</span></font></b></p>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'> </span></font></b><b><font
size=2 color=navy face=Arial><span lang=EN-GB style='font-size:10.0pt;
font-family:Arial;color:navy;font-weight:bold'>Co. <ns0:City u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:City u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z">Cork</ns0:place></ns0:City></ns0:place></ns0:City>,</span></font></b></p>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy;font-weight:bold'> <ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z">Eire</ns0:place></ns0:place></span></font></b></p>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=3 color=navy
face="Wingdings 2"><span lang=EN-GB style='font-size:12.0pt;font-family:"Wingdings 2";
color:navy;font-weight:bold'>'</span></font></b><b><font color=navy face=Arial><span
lang=EN-GB style='font-family:Arial;color:navy;font-weight:bold'>
+353 21 4822028</span></font></b></p>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=3 color=navy
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt;color:navy;
font-weight:bold'> +353 87
2393010</span></font></b></p>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=3 color=navy
face=Wingdings><span lang=EN-GB style='font-size:12.0pt;font-family:Wingdings;
color:navy;font-weight:bold'>-</span></font></b><b><font color=navy face=Arial><span
lang=EN-GB style='font-family:Arial;color:navy;font-weight:bold'>
</span></font></b><b><font color=blue><span lang=EN-GB style='color:blue;
font-weight:bold'><ns0:PersonName u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:PersonName u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"></ns0:PersonName></ns0:PersonName><a
href="mailto:jrobinson@eircom.net">jrobinson@eircom.net<font color=black><span
style='color:windowtext;text-decoration:none'>></span></font></a></span></font></b><b><font
color=navy face=Arial><span lang=EN-GB style='font-family:Arial;color:navy;
font-weight:bold'> </span></font></b></p>
</div>
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<div style='margin-left:36.0pt'>
<div style='margin-left:36.0pt'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center>
</span></font></div>
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</div>
<p class=MsoNormal style='margin-left:72.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> John Platt
[mailto:jcplatt@lineone.net] <br>
<b><span style='font-weight:bold'>Sent:</span></b> 20 April 2005 20:56<br>
<b><span style='font-weight:bold'>To:</span></b> j.robinson@kepler-systems.com<br>
<b><span style='font-weight:bold'>Cc:</span></b> vtkusers@vtk.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [vtkusers] Scaling
glyphs[Scanned]</span></font></p>
</div>
<p class=MsoNormal style='margin-left:72.0pt'><font size=3
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Hi Jim,</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>Have you
tried ClampingOn() with ScalingOn(). Data scales outside the clamp range are
reset to the range end points. The data scale is then normalized to the range 0
– 1. All glyphs with a data scale less than the lower clamp range are
therefore mapped to zero. Provided data scaling is on
(SetScaleModeToDataScalingOn()), the composite scale factor,
DataScale*ScaleFactor will also be zero.</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>HTH</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'>John.</span></font></p>
<p class=MsoNormal style='margin-left:72.0pt'><font size=2 color=navy
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> vtkusers-bounces@vtk.org
[mailto:vtkusers-bounces@vtk.org] <b><span style='font-weight:bold'>On Behalf
Of </span></b>James C Robinson<br>
<b><span style='font-weight:bold'>Sent:</span></b> 20 April 2005 13:46<br>
<b><span style='font-weight:bold'>To:</span></b> Administrator<br>
<b><span style='font-weight:bold'>Cc:</span></b> jcplatt@lineone.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> [vtkusers] Scaling
glyphs[Scanned]</span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Dear all,</span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'>I am producing a set of
glyphs using a vtkPlaneSource as the data points. It works perfectly –
when I have scaling on, the glyphs behave appropriately. However, when I
turn scaling off (whowing vector direction only) there are glyphs placed even
at points (on the vtkPlaneSource) that are outside the body (therefore
magnitude is implicitly zero).</span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'>I can Could anybody tell
me if it is possible to have the glyphs eliminated at points that are outside
the field (or where the magnitude is zero – or less than some threshold)?</span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Regards,</span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'>Jim</span></font></p>
<p class=MsoNormal style='margin-left:108.0pt'><font size=2 face=Arial><span
lang=EN-GB style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<div>
<div>
<div>
<p class=MsoNormal style='margin-left:108.0pt'><b><font size=3 color=navy
face=Arial><span lang=FR style='font-size:12.0pt;font-family:Arial;color:navy;
font-weight:bold'>James C Robinson</span></font></b><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'>, </span></font></b></p>
<p class=MsoNormal style='margin-left:108.0pt'><b><font size=3 color=navy
face=Wingdings><span lang=EN-GB style='font-size:12.0pt;font-family:Wingdings;
color:navy;font-weight:bold'>+</span></font></b><b><font color=navy><span
lang=FR style='color:navy;font-weight:bold'> 42
Rivergrove</span></font></b><b><font size=2 color=navy face=Arial><span
lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>,</span></font></b></p>
<p class=MsoNormal style='margin-left:108.0pt'><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'> <ns0:City u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:City u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z">Glanmire</ns0:place></ns0:City></ns0:place></ns0:City>,</span></font></b></p>
<p class=MsoNormal style='margin-left:108.0pt'><b><font size=2 color=navy
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:navy;
font-weight:bold'> </span></font></b><b><font
size=2 color=navy face=Arial><span lang=EN-GB style='font-size:10.0pt;
font-family:Arial;color:navy;font-weight:bold'>Co. <ns0:City u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:City u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z">Cork</ns0:place></ns0:City></ns0:place></ns0:City>,</span></font></b></p>
<p class=MsoNormal style='margin-left:108.0pt'><b><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy;font-weight:bold'> <ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:place u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z">Eire</ns0:place></ns0:place></span></font></b></p>
<p class=MsoNormal style='margin-left:108.0pt'><b><font size=3 color=navy
face="Wingdings 2"><span lang=EN-GB style='font-size:12.0pt;font-family:"Wingdings 2";
color:navy;font-weight:bold'>'</span></font></b><b><font color=navy face=Arial><span
lang=EN-GB style='font-family:Arial;color:navy;font-weight:bold'>
+353 21 4822028</span></font></b></p>
<p class=MsoNormal style='margin-left:108.0pt'><b><font size=3 color=navy
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt;color:navy;
font-weight:bold'> +353 87
2393010</span></font></b></p>
<p class=MsoNormal style='margin-left:108.0pt'><b><font size=3 color=navy
face=Wingdings><span lang=EN-GB style='font-size:12.0pt;font-family:Wingdings;
color:navy;font-weight:bold'>-</span></font></b><b><font color=navy face=Arial><span
lang=EN-GB style='font-family:Arial;color:navy;font-weight:bold'>
</span></font></b><b><font color=blue><span lang=EN-GB style='color:blue;
font-weight:bold'><ns0:PersonName u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"><ns0:PersonName u1:insAuthor="Unknown" u1:insDate="2005-04-22T10:48:00Z" u1:endInsAuthor="Unknown" u1:endInsDate="2005-04-22T10:48:00Z"></ns0:PersonName></ns0:PersonName><a
href="mailto:jrobinson@eircom.net">jrobinson@eircom.net<font color=black><span
style='color:windowtext;text-decoration:none'>></span></font></a></span></font></b><b><font
color=navy face=Arial><span lang=EN-GB style='font-family:Arial;color:navy;
font-weight:bold'> </span></font></b></p>
</div>
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<p class=MsoNormal style='margin-left:108.0pt'><font size=3
face="Times New Roman"><span lang=EN-GB style='font-size:12.0pt'> </span></font></p>
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