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<DIV><FONT face=Verdana size=2><FONT face=Verdana><FONT
size=2>Hello,all:</FONT></FONT></DIV>
<DIV>
<DIV><FONT face=Verdana><FONT size=2> How are you, I
have three problems about using VTK:</FONT></FONT></DIV>
<DIV><FONT face=Verdana><FONT size=2>
</FONT></FONT></DIV><FONT face=Verdana>
<DIV><FONT size=2>1. I have a vtkDelaunay2D object and a non-closed 2D polyline,
I want to project this polyline</FONT></DIV>
<DIV><FONT size=2> to vtkDelaunay2D to form a 3D polyline. How
to do?</FONT></DIV>
<DIV><FONT size=2> For closed 2D polyline, I can using vtkCutter
with a vtkImplicitSelectionLoop as cut function</FONT></DIV>
<DIV><FONT size=2> to get the cutted cross section, but
vtkImplicitSelectionLoop does not support non-closed,</FONT></DIV>
<DIV><FONT size=2> So I can't do that for non-closed 2D
polyline.</FONT></DIV>
<DIV><FONT size=2> </FONT></DIV>
<DIV><FONT size=2> This feature is very important for me, when we
design highway, we often need to get many cross</FONT></DIV>
<DIV><FONT size=2> sections from vtkDelaunay2D using 2D polyline
projection. </FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>2. When using vtkCutter to cut through a vtkDelaunay2D, the
output for vtkCutter is a vtkPolyData,</FONT></DIV>
<DIV><FONT size=2> actually, this output is a line set, it
can be combined into several 3D polylines according to point</FONT></DIV>
<DIV><FONT size=2> IDs of each line cell. So, have any filters can
perform this action? Because I want connect this type</FONT></DIV>
<DIV><FONT size=2> of output to a vtkXYPlotActor to get the cross
section in real time.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>3. I have a set of oblique-planes that connected each other, I
want to use it to cut through a</FONT></DIV>
<DIV><FONT size=2> vtkDelaunay2D, How to do?</FONT></DIV>
<DIV><FONT size=2> Currently, I using a set of vtkPlanes to
represent these oblique-planes, then using boolean</FONT></DIV>
<DIV><FONT size=2> intersection to form a vtkImplicitBoolean,
then using it to vtkCutter, but vtkCutter no any output.</FONT></DIV>
<DIV><FONT size=2> I have checked my code, all imput data is
corrected, and when only have an oblique-plane, the</FONT></DIV>
<DIV><FONT size=2> vtkCutter have output.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>thanks</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>good luck</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT
size=2>
Liang Aibin</FONT></DIV>
<DIV><FONT
size=2>
<A href="mailto:lab_zj@163.com">lab_zj@163.com</A></FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV align=left><FONT size=2>
<HR style="WIDTH: 122px; HEIGHT: 2px" SIZE=2>
</FONT></DIV>
<DIV><FONT color=#c0c0c0><FONT size=2><SPAN>lab_zj</SPAN></FONT></DIV>
<DIV><FONT
size=2>2009-01-13</FONT></FONT></DIV></FONT></FONT></DIV></BODY></HTML>