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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'>Hi 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'>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 </span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>John Biddiscombe</span></font><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'> – vtkGlyph3D does
just what it says on the tin!</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 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> 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: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'>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: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'>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: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'>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>
<div>
<div>
<div>
<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 w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"><ns0:City w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z">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 w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"><ns0:City w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z">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'> </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'><ns0:place w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z">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 w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"><ns0:PersonName w:insAuthor="Jim" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Jim" w:endInsDate="2005-04-21T16:56:00Z"></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>
</div>
</div>
<div>
<div class=MsoNormal align=center style='margin-left:36.0pt;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>
<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> 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: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'>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: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'>HTH</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> 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: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 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:72.0pt'><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:72.0pt'><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:72.0pt'><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:72.0pt'><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:72.0pt'><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:72.0pt'><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:72.0pt'><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:72.0pt'><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:72.0pt'><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: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 w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"><ns0:City w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z">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 w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"><ns0:City w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z">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'> </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'><ns0:place w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"><ns0:place w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z">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 w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"><ns0:PersonName w:insAuthor="Unknown" w:insDate="2005-04-21T16:56:00Z" w:endInsAuthor="Unknown" w:endInsDate="2005-04-21T16:56:00Z"></ns0:PersonName></ns0:PersonName><a
href="mailto:jrobinson@eircom.net">jrobinson@eircom.net<font color=black><span
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