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<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=542100212-18012001>I
extract edges of points cloud by using the vtkFeatureEdges.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=542100212-18012001>Does
anybody know how I can retrieve the 3D information about these edges after using
the class. So I can work with these edges.</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=542100212-18012001>Thank
you.</SPAN></FONT></DIV>
<BLOCKQUOTE style="MARGIN-RIGHT: 0px">
<DIV align=left class=OutlookMessageHeader dir=ltr><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Andrew Maclean
[mailto:a.maclean@acfr.usyd.edu.au]<BR><B>Sent:</B> Thursday, January 18, 2001
2:10 AM<BR><B>To:</B> vtkusers@public.kitware.com<BR><B>Subject:</B>
[vtkusers] Getting text to follow the active camera.<BR><BR></DIV></FONT>
<DIV class=Section1>
<P class=MsoNormal><SPAN class=EmailStyle15><FONT color=black face=Arial
size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt">How do
I get the text to follow the active camera? I am using the Doc/View paradigm
in the vtk/MFC example where you </SPAN></FONT></SPAN><FONT color=black><SPAN
style="COLOR: black">fill a vtkPropCollection with actors, then add them to
your "picture view" during OnUpdate(). </SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><![if !supportEmptyParas]> <![endif]></SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt">In the document class I do
this:</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>//-------- The pipeline for text</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>// Source</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>vText->SetText(txt);</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>// Filters</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN></SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>// Mapper</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textMapper->SetInput(vText->GetOutput());</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><![if !supportEmptyParas]> <![endif]></SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>// Actor</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->SetMapper(textMapper);</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->SetScale(1,1,1);</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->AddPosition(0,-0.1,-0.1);</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->GetProperty()->SetDiffuseColor(0.2784, 1.0000,
0.3882);</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->GetProperty()->SetSpecularColor(0.2784, 1.0000,
0.3882);</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->GetProperty()->SetSpecular(0.4);</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->GetProperty()->SetSpecularPower(50);</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->GetProperty()->SetInterpolationToGouraud();</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><SPAN
style="mso-tab-count: 1">
</SPAN>textActor->GetProperty()->SetOpacity(0.75);</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt">//<SPAN
style="mso-tab-count: 1">
</SPAN>textActor->SetCamera(Renderer->GetActiveCamera());</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT color=black face="Times New Roman" size=3><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><![if !supportEmptyParas]> <![endif]></SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'">Clearly the last line will not work because the Renderer is in the view class. So how do I get the active camera for the text actor?<o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'">Is there some way of doing this in the view class in particular OnUpdate(), where you are adding the actors to the renderer as done in the following code snippet.<o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'"><SPAN style="mso-tab-count: 1"> </SPAN>while (prop = propc->GetNextProp()) <o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'"><SPAN style="mso-tab-count: 1"> </SPAN>{<o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'"><SPAN style="mso-tab-count: 2"> </SPAN>this->Renderer->AddProp(prop);<o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'"><SPAN style="mso-tab-count: 1"> </SPAN>}<o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'"><SPAN style="mso-tab-count: 1"> </SPAN>this->Renderer->ResetCamera();<o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'"><![if !supportEmptyParas]> <![endif]><o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'"><![if !supportEmptyParas]> <![endif]><o:p></o:p></SPAN></FONT></SPAN></PRE><PRE><SPAN class=EmailStyle15><FONT color=black face=Arial size=2><SPAN style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'">If you have an answer, many thanks in advance!!<o:p></o:p></SPAN></FONT></SPAN></PRE>
<P class=MsoNormal><SPAN class=EmailStyle15><FONT color=black face=Arial
size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt"><![if !supportEmptyParas]> <![endif]><o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal><SPAN class=EmailStyle15><FONT color=black face=Arial
size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt"><![if !supportEmptyParas]> <![endif]><o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal><SPAN class=EmailStyle15><FONT color=black face=Arial
size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt">Andrew<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal><SPAN class=EmailStyle15><FONT color=black face=Arial
size=2><SPAN
style="FONT-FAMILY: Arial; FONT-SIZE: 10pt; mso-bidi-font-size: 12.0pt"><![if !supportEmptyParas]> <![endif]><o:p></o:p></SPAN></FONT></SPAN></P></DIV></BLOCKQUOTE></BODY></HTML>