<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><P class=MsoNormal style="MARGIN: 0in 0in 10pt"><FONT face=Calibri size=3>Thank you Karthik for the quick response.</FONT></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 10pt"><FONT face=Calibri size=3>I wrote following code to convert the contour points to surface. But the vtk ouput file is blank. i.e no vertices and cells. What might <SPAN style="mso-spacerun: yes"> </SPAN>me the reason ?</FONT></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 10pt"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p><FONT face=Calibri size=3> </FONT></o:p></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Courier New'; mso-no-proof: yes">FILE</SPAN><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"> *<SPAN style="COLOR: black">datei</SPAN> = <SPAN style="COLOR: black">fopen</SPAN>(<SPAN style="COLOR: maroon">"C:/inputpoints.txt"</SPAN>,<SPAN style="COLOR: maroon">"rt"</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">vtkPolyData</SPAN> *<SPAN style="COLOR: black">data</SPAN> = <SPAN style="COLOR: black">vtkPolyData</SPAN>::<SPAN style="COLOR: black">New</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">vtkPoints</SPAN> *<SPAN style="COLOR: black">points</SPAN> = <SPAN style="COLOR: black">vtkPoints</SPAN>::<SPAN style="COLOR: black">New</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">vtkCellArray</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>*<SPAN style="COLOR: black">Lines</SPAN> = <SPAN style="COLOR: black">vtkCellArray</SPAN> ::<SPAN style="COLOR: black">New</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><o:p> </o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: blue">int</SPAN> <SPAN style="COLOR: black">iCounter</SPAN> = 0;<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: blue">while</SPAN> (!<SPAN style="COLOR: black">feof</SPAN>(<SPAN style="COLOR: black">datei</SPAN>))<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN>{<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 2"> </SPAN><SPAN style="COLOR: black">fprintf</SPAN>(<SPAN style="COLOR: black">stdout</SPAN>,<SPAN style="COLOR: maroon">"reading points: %i\r"</SPAN>, <SPAN style="COLOR: black">iCounter</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 2"> </SPAN><SPAN style="COLOR: blue">float</SPAN> <SPAN style="COLOR: black">x</SPAN>, <SPAN style="COLOR: black">y</SPAN>, <SPAN style="COLOR: black">z</SPAN>;<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 2"> </SPAN><SPAN style="COLOR: black">fscanf</SPAN>(<SPAN style="COLOR: black">datei</SPAN>,<SPAN style="COLOR: maroon">"%f %f %f\n"</SPAN>, &<SPAN style="COLOR: black">x</SPAN>, &<SPAN style="COLOR: black">y</SPAN>, &<SPAN style="COLOR: black">z</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 2"> </SPAN><SPAN style="COLOR: black">points</SPAN>-><SPAN style="COLOR: black">InsertPoint</SPAN>(<SPAN style="COLOR: black">iCounter</SPAN>++, <SPAN style="COLOR: black">x</SPAN>, <SPAN style="COLOR: black">y</SPAN>, <SPAN style="COLOR: black">z</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 2"> </SPAN><SPAN style="COLOR: black">Lines</SPAN>-><SPAN style="COLOR: black">InsertCellPoint</SPAN>( <SPAN style="COLOR: black">iCounter</SPAN> );<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN>}<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">data</SPAN>-><SPAN style="COLOR: black">SetPoints</SPAN>(<SPAN style="COLOR: black">points</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">data</SPAN>-><SPAN style="COLOR: black">SetLines</SPAN>(<SPAN style="COLOR: black">Lines</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">fclose</SPAN>(<SPAN style="COLOR: black">datei</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">fprintf</SPAN>(<SPAN style="COLOR: black">stdout</SPAN>,<SPAN style="COLOR: maroon">"\n\n"</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><o:p> </o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><o:p> </o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">vtkRuledSurfaceFilter</SPAN> *<SPAN style="COLOR: black">ruledSurfaceFilter</SPAN> = <SPAN style="COLOR: black">vtkRuledSurfaceFilter</SPAN>::<SPAN style="COLOR: black">New</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">ruledSurfaceFilter</SPAN>-><SPAN style="COLOR: black">SetInput</SPAN>(<SPAN style="COLOR: black">data</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">ruledSurfaceFilter</SPAN>-><SPAN style="COLOR: black">SetRuledModeToResample</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">ruledSurfaceFilter</SPAN>-><SPAN style="COLOR: black">CloseSurfaceOn</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">ruledSurfaceFilter</SPAN>-><SPAN style="COLOR: black">Update</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><o:p> </o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><o:p> </o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><o:p> </o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">vtkDataSetWriter</SPAN> *<SPAN style="COLOR: black">dsw</SPAN> = <SPAN style="COLOR: black">vtkDataSetWriter</SPAN>::<SPAN style="COLOR: black">New</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">dsw</SPAN>-><SPAN style="COLOR: black">SetInput</SPAN>((<SPAN style="COLOR: black">vtkPolyData</SPAN>*)<SPAN style="COLOR: black">ruledSurfaceFilter</SPAN>-><SPAN style="COLOR: black">GetOutput</SPAN>());<SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">dsw</SPAN>-><SPAN style="COLOR: black">SetFileName</SPAN>(<SPAN style="COLOR: maroon">"c:/RuledSurface.vtk"</SPAN>);<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; mso-layout-grid-align: none"><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'; mso-no-proof: yes"><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="COLOR: black">dsw</SPAN>-><SPAN style="COLOR: black">Write</SPAN>();<o:p></o:p></SPAN></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 10pt"><o:p><FONT face=Calibri size=3></FONT></o:p> </DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 10pt"><o:p><FONT face=Calibri size=3>Rgds,</FONT></o:p></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 10pt"><o:p><FONT face=Calibri size=3>Yogish</FONT></o:p></DIV><BR><BR>--- On <B>Wed, 12/8/09, Karthik Krishnan <I><karthik.krishnan@kitware.com></I></B> wrote:<BR>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid"><BR>From: Karthik Krishnan <karthik.krishnan@kitware.com><BR>Subject: Re: [vtkusers] Surface from contours<BR>To: "Yogish Mallya" <mallyayogish@yahoo.co.in><BR>Cc: vtkusers@vtk.org, "itk" <insight-users@itk.org><BR>Date: Wednesday, 12 August, 2009, 11:05 AM<BR><BR>
<DIV id=yiv2079170299>Graphics/Testing/Tcl/TestRuledSurface*.tcl<BR><BR>The difference from the tests is that you need to set "ClosedSurfaceOn()". <BR><BR>Also, if the number of points in each of the contours is different or not in correspondance, you'll want to resample the contours by setting "SetRuledModeToResample()".<BR><BR>And there are ways to do this without using vtkRuledSurfaceFilter as well... <BR><BR>You could rasterize the contours (vtkPolygon::PointInPolygon), treat the result as an image, run an AntiAlias filter (ITK) and then triangulate by generating an isosurface with marching cubes.<BR><BR><BR><BR><BR><BR>
<DIV class=gmail_quote>On Tue, Aug 11, 2009 at 10:05 PM, Yogish Mallya <SPAN dir=ltr><<A href="http://in.mc952.mail.yahoo.com/mc/compose?to=mallyayogish@yahoo.co.in" target=_blank rel=nofollow ymailto="mailto:mallyayogish@yahoo.co.in">mallyayogish@yahoo.co.in</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=gmail_quote style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">
<TABLE cellSpacing=0 cellPadding=0 border=0>
<TBODY>
<TR>
<TD style="FONT-FAMILY: inherit; font-stretch: inherit; font-size-adjust: inherit" vAlign=top><BR><BR>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid"><BR>
<DIV>
<TABLE cellSpacing=0 cellPadding=0 border=0>
<TBODY>
<TR>
<TD vAlign=top>
<P style="MARGIN: 0in 0in 10pt"><FONT face=Calibri size=3>Hi All,</FONT> </DIV>
<P style="MARGIN: 0in 0in 10pt"><FONT size=3><FONT face=Calibri>I have a text file containing a set of points representing three parallel contours in Z-direction (text file is attached in the mail). <SPAN> </SPAN>The point set in the file is ordered. <SPAN> </SPAN>I want to generate a triangular surface mesh from these contours. vtkRuledSurfaceFilter seems to be the correct solution. It would be great if somebody can share a c++ example or steps on how to use this filter ? <SPAN> </SPAN></FONT></FONT> </DIV>
<P style="MARGIN: 0in 0in 10pt"><FONT face=Calibri size=3>Regards,</FONT> </DIV>
<P style="MARGIN: 0in 0in 10pt"><FONT face=Calibri size=3>Yogish</FONT></DIV></TD></TR></TBODY></TABLE></DIV></BLOCKQUOTE></TD></TR></TBODY></TABLE><BR>
<DIV class=hm><BR>
<HR SIZE=1>
Yahoo! recommends that you upgrade to the new and safer <A href="http://in.rd.yahoo.com/tagline_ie8_1/*http://downloads.yahoo.com/in/internetexplorer/" target=_blank rel=nofollow>Internet Explorer 8</A>.</DIV><BR>_______________________________________________<BR>Powered by <A href="http://www.kitware.com/" target=_blank rel=nofollow>www.kitware.com</A><BR><BR>Visit other Kitware open-source projects at <A href="http://www.kitware.com/opensource/opensource.html" target=_blank rel=nofollow>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 rel=nofollow>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 rel=nofollow>http://www.vtk.org/mailman/listinfo/vtkusers</A><BR><BR></BLOCKQUOTE></DIV><BR><BR clear=all><BR>-- <BR>Karthik
Krishnan<BR>R&D Engineer,<BR>Kitware Inc.<BR>Ph: 518 881 4919<BR>Fax: 518 371 4573<BR></DIV></BLOCKQUOTE></td></tr></table><br>
<!--3--><hr size=1></hr> Yahoo! recommends that you upgrade to the new and safer <a href="http://in.rd.yahoo.com/tagline_ie8_1/*http://downloads.yahoo.com/in/internetexplorer/" target="_blank"> Internet Explorer 8</a>.