<div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">朱文武</b> <span dir="ltr">&lt;<a href="mailto:cool.wenwu@gmail.com">cool.wenwu@gmail.com</a>&gt;</span><br>Date: Wed, Mar 31, 2010 at 10:11 PM<br>
Subject: Re: [vtkusers] an odd question about a plate which behind the actor<br>To: David Doria &lt;<a href="mailto:daviddoria%2Bvtk@gmail.com">daviddoria+vtk@gmail.com</a>&gt;<br><br><br>David,<br>     Thanks!  sorry, i also do not know why the image was disappeared.   I don&#39;t know whether the problem is related to the code. Because the same code can applied in other images(dataset), and the problem did not occurred. The related code was presented:<br>


<br>   m_read = new vtkBMPReader();<br><div>   skinExtractor = vtkMarchingCubes::New();//<div>   skinNormals = vtkPolyDataNormals::New();//<br>    triangle=vtkTriangleFilter::New();//<br>

    deci=vtkDecimatePro::New();/<br>    smoother=vtkSmoothPolyDataFilter::New();//<br>    skinMapper = vtkPolyDataMapper::New();//<br>    skin = vtkActor::New();<br></div><br>    this-&gt;m_read-&gt;Update();//read the bmp image<br>


    this-&gt;skinExtractor-&gt;SetInputConnection(m_read-&gt;GetOutputPort());<br>    this-&gt;skinExtractor-&gt;SetValue(0,threshshold);<br>    this-&gt;skinNormals-&gt;SetInputConnection(skinExtractor-&gt;GetOutputPort());/<br>


    this-&gt;skinNormals-&gt;SetFeatureAngle(60.0);//<br>    this-&gt;triangle-&gt;SetInputConnection(skinNormals-&gt;GetOutputPort());//<br>    this-&gt;deci-&gt;SetInputConnection(triangle-&gt;GetOutputPort());//<br>    this-&gt;deci-&gt;SetTargetReduction(predigestion);//<br>


    this-&gt;deci-&gt;PreserveTopologyOn();//<br>    this-&gt;smoother-&gt;SetInputConnection(deci-&gt;GetOutputPort());//<br>    this-&gt;smoother-&gt;SetNumberOfIterations(smoothness);//<br>    this-&gt;skinMapper-&gt;SetInputConnection(smoother-&gt;GetOutputPort());//<br>


    this-&gt;skinMapper-&gt;ScalarVisibilityOff();//<br>    this-&gt;skinMapper-&gt;SetColorModeToMapScalars();<br>    this-&gt;skinMapper-&gt;SetScalarRange(-1,1);<br> <br>    <br>    // Link the actor<br>    <br>    this-&gt;skin-&gt;SetMapper(this-&gt;skinMapper);<br>


    this-&gt;skin-&gt;GetProperty()-&gt;SetColor(0.94,0.83,0.45);</div><br><br>The image of the result:<br><br><img title="5.bmp" alt="5.bmp" src="cid:ii_127b714fc77cd415"><br><br>Thanks!<div><div></div><div class="h5"></div>
</div></div><br><div>Please keep the discussion on the mailing list so everyone can benefit/help.</div><div><br clear="all">Thanks,<br><br>David</div>