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<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'>Hello all:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'>I have been baffled the
question for a long time. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'>I am studying an algorithm
of judging convex or non-convex polyhedron.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'>If every vertex
is above the plane which contain three vertexes adjacent to the vertex,
the polyhedron is convex .<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'>For an example, there are
eight vertexes on a cube. And each vertex is adjacent to three other vertexes. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'>My question is:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'>When an arbitrary vertex
is accessed, how to know the other three vertexes’ coordinate?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'>I need your helps! Thank you!!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal align=left style='text-align:left'><b><font size=2 face=宋体><span
style='font-size:10.0pt;font-family:SimSun;font-weight:bold'>发件人<span
lang=EN-US>:</span></span></font></b><font size=2 face=宋体><span
lang=EN-US style='font-size:10.0pt;font-family:SimSun'>
vtkusers-bounces+polinzhuo=163.com@vtk.org
[mailto:vtkusers-bounces+polinzhuo=163.com@vtk.org] </span></font><b><font
size=2 face=宋体><span style='font-size:10.0pt;font-family:SimSun;
font-weight:bold'>代表 </span></font></b><font size=2 face=宋体><span
lang=EN-US style='font-size:10.0pt;font-family:SimSun'>PAUL<br>
</span></font><b><font size=2 face=宋体><span style='font-size:
10.0pt;font-family:SimSun;font-weight:bold'>发送时间<span
lang=EN-US>:</span></span></font></b><font size=2 face=宋体><span
lang=EN-US style='font-size:10.0pt;font-family:SimSun'> <st1:chsdate
IsROCDate="False" IsLunarDate="False" Day="4" Month="1" Year="2007" w:st="on">2007<span
lang=EN-US><span lang=EN-US>年1</span></span><span lang=EN-US><span
lang=EN-US>月4</span></span><span lang=EN-US><span lang=EN-US>日</span></span></st1:chsdate>
13:44<br>
</span></font><b><font size=2 face=宋体><span style='font-size:
10.0pt;font-family:SimSun;font-weight:bold'>收件人<span
lang=EN-US>:</span></span></font></b><font size=2 face=宋体><span
lang=EN-US style='font-size:10.0pt;font-family:SimSun'> <st1:PersonName w:st="on">vtkusers@vtk.org</st1:PersonName><br>
</span></font><b><font size=2 face=宋体><span style='font-size:
10.0pt;font-family:SimSun;font-weight:bold'>主题<span lang=EN-US>:</span></span></font></b><font
size=2 face=宋体><span lang=EN-US style='font-size:10.0pt;
font-family:SimSun'> [vtkusers] the adjacent vertex</span></font><font size=3><span
lang=EN-US style='font-size:12.0pt'><o:p></o:p></span></font></p>
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<p class=MsoNormal align=left style='text-align:left'><font size=2
face="Times New Roman"><span lang=EN-US style='font-size:10.5pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>Hi,all:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>There is an arbitrary vertex on a polyhedron. How to
find the other three vertexes which are adjacent to the vertex?<o:p></o:p></span></font></p>
<p class=MsoNormal style='layout-grid-mode:char'><font size=1 face=Arial><span
lang=EN-US style='font-size:9.0pt;font-family:Arial'>Paul<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
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