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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Dear all,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span 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 &#8211; &nbsp;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).<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span 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 &#8211; or less than some threshold)?<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Regards,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Jim<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

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<p class=MsoNormal><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><b><font
color=navy><span lang=FR style='color:navy;font-weight:bold'><o:p></o:p></span></font></b></p>

<p class=MsoNormal><b><font size=3 color=navy face=Wingdings><span
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'>&nbsp;&nbsp;&nbsp;&nbsp;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><b><font
color=navy><span lang=FR style='color:navy;font-weight:bold'><o:p></o:p></span></font></b></p>

<p class=MsoNormal><b><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></font></b><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'><ns0:City w:insAuthor="Jim"
 w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
 w:endInsDate="2005-04-20T13:22:00Z"><ns0:place w:insAuthor="Jim"
  w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
  w:endInsDate="2005-04-20T13:22:00Z"><ns0:City w:insAuthor="Jim"
   w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
   w:endInsDate="2005-04-20T13:22:00Z"><ns0:place w:insAuthor="Jim"
    w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
    w:endInsDate="2005-04-20T13:22:00Z"><font color=navy><span lang=FR
    style='color:navy'>Glanmire</span></font></ns0:place></ns0:City></ns0:place></ns0:City></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><b><font color=navy><span
lang=FR style='color:navy;font-weight:bold'><o:p></o:p></span></font></b></p>

<p class=MsoNormal><b><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></font></b><b><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy;font-weight:bold'>Co. </span></font></b><b><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial;font-weight:
bold'><ns0:City w:insAuthor="Jim" w:insDate="2005-04-20T13:22:00Z"
 w:endInsAuthor="Jim" w:endInsDate="2005-04-20T13:22:00Z"><ns0:place
  w:insAuthor="Jim" w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
  w:endInsDate="2005-04-20T13:22:00Z"><ns0:City w:insAuthor="Jim"
   w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
   w:endInsDate="2005-04-20T13:22:00Z"><ns0:place w:insAuthor="Jim"
    w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
    w:endInsDate="2005-04-20T13:22:00Z"><st1:City w:st="on"><st1:place w:st="on"><font
      color=navy><span style='color:navy'>Cork</span></font></st1:place></st1:City></ns0:place></ns0:City></ns0:place></ns0:City><font
color=navy><span style='color:navy'>,</span></font></span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></b></p>

<p class=MsoNormal><b><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></font></b><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'><ns0:place w:insAuthor="Jim"
 w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
 w:endInsDate="2005-04-20T13:22:00Z"><ns0:place w:insAuthor="Jim"
  w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
  w:endInsDate="2005-04-20T13:22:00Z"><st1:place w:st="on"><font color=navy><span
   style='color:navy'>Eire</span></font></st1:place></ns0:place></ns0:place></span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></b></p>

<p class=MsoNormal><b><font size=3 color=navy face="Wingdings 2"><span
style='font-size:12.0pt;font-family:"Wingdings 2";color:navy;font-weight:bold'>'</span></font></b><b><font
color=navy face=Arial><span style='font-family:Arial;color:navy;font-weight:
bold'>&nbsp;&nbsp;&nbsp;&nbsp; +353 21&nbsp;4822028</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></b></p>

<p class=MsoNormal><b><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy;font-weight:bold'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+353 87 2393010<o:p></o:p></span></font></b></p>

<p class=MsoNormal><b><font size=3 color=navy face=Wingdings><span
style='font-size:12.0pt;font-family:Wingdings;color:navy;font-weight:bold'>-</span></font></b><b><font
color=navy face=Arial><span style='font-family:Arial;color:navy;font-weight:
bold'>&nbsp;&nbsp;&nbsp; </span></font><ns0:PersonName w:insAuthor="Jim"
 w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
 w:endInsDate="2005-04-20T13:22:00Z"><ns0:PersonName w:insAuthor="Jim"
  w:insDate="2005-04-20T13:22:00Z" w:endInsAuthor="Jim"
  w:endInsDate="2005-04-20T13:22:00Z"></ns0:PersonName><font color=blue><span
 style='color:blue'><a href="mailto:jrobinson@eircom.net">jrobinson@eircom.net<font
 color=black><span style='color:windowtext;text-decoration:none'></ns0:PersonName></span></font><font
color=black><span style='color:windowtext;text-decoration:none'>&gt;</span></font></a></span></font><font
color=navy face=Arial><span style='font-family:Arial;color:navy'>&nbsp;</span></font><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy;font-weight:normal'><o:p></o:p></span></font></b></p>

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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

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