<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.E-MailFormatvorlage17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="DE" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US">I attached the source code for the project. The main method is in aufgabe3.cpp<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Von:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org]
<b>Im Auftrag von </b>Alex Malyushytskyy<br>
<b>Gesendet:</b> Donnerstag, 22. November 2012 03:01<br>
<b>An:</b> vtkusers@vtk.org<br>
<b>Betreff:</b> Re: [vtkusers] Polydata input to filter is not set<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Output is generated when filter is executed either through the pipeline or calling Update().<br>
This why it is important to see the code.<br>
<br>
For debugging purposes remove all irrelevant code. For example create polydata manually.
<br>
This would also allow to post questions with self-sufficient test code.<br>
<br>
As far as I can see there is no any problem with RequestData implementation.<br>
To proof it - check any available vtk polydata filter ( for example vtkTriangleFilter )which looks like exactly as yours.<br>
It might be different for vtk version 5 though. If it is the case check source code of version you have installed.<br>
<br>
Alex<br>
<br>
<br>
<o:p></o:p></p>
<div>
<p class="MsoNormal">On Wed, Nov 21, 2012 at 2:54 PM, Nico Schertler <<a href="mailto:nico.schertler@studentpartners.de" target="_blank">nico.schertler@studentpartners.de</a>> wrote:<o:p></o:p></p>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Alex,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">to answer your questions. Of course, I provided input to the Delaunay filter. But because
this is not directly connected to the problem and it would require introduction to some other classes and so on, I decided to omit this in the question. But I stated that the filter has an output which I could render. Furthermore, I am able to work on the
output (as I would do in the filter) and produce a vtkImageData directly (without the filter). So there must be something wrong with passing the output to the filter.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I will implement the static New() if everything else works. For now, it is just a test
class.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Nico</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a name="13b253d63994f01f__MailOriginal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Von:</span></b></a><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">
<a href="mailto:vtkusers-bounces@vtk.org" target="_blank">vtkusers-bounces@vtk.org</a> [mailto:<a href="mailto:vtkusers-bounces@vtk.org" target="_blank">vtkusers-bounces@vtk.org</a>]
<b>Im Auftrag von </b>Alex Malyushytskyy<br>
<b>Gesendet:</b> Mittwoch, 21. </span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">November 2012 23:34<br>
<b>An:</b> <a href="mailto:vtkusers@vtk.org" target="_blank">vtkusers@vtk.org</a><br>
<b>Betreff:</b> Re: [vtkusers] Polydata input to filter is not set</span><o:p></o:p></p>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span lang="EN-US">There is no enough information in your post to reproduce or understand the problem.<br>
For example I believe there are cases when </span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">vtkDelaunay2D
</span><span lang="EN-US"><br>
will produce empty output.<br>
More of that it is not even clear that you provide any input to </span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">vtkDelaunay2D and update it.</span><span lang="EN-US"><br>
And I am not great in guessing.<br>
<br>
What I would highly recommend, if you derive class from vtk class,<br>
follow the vtk guidelines. <br>
If you did this you would never be able to write:<br>
</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">MeshToRGBFilter* rgbFilter =
<span style="color:blue">new</span> MeshToRGBFilter();<br>
<br>
Alex</span><o:p></o:p></p>
</div>
</div>
<div>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">On Wed, Nov 21, 2012 at 2:02 AM, Nico Schertler <</span><a href="mailto:nico.schertler@studentpartners.de" target="_blank"><span lang="EN-US">nico.schertler@studentpartners.de</span></a><span lang="EN-US">>
wrote:</span><o:p></o:p></p>
</div>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
<div>
<div>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Hi,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">I am creating a filter that takes the result of a vtkDelaunay2D and creates a vtkImageData from that. Therefore, I chose the vtkImageAlgorithm as the base class
for my filter and changed the input accordingly:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">int</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> MeshToRGBFilter::FillInputPortInformation(<span style="color:blue">int</span> port, vtkInformation* info)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">{</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(),
<span style="color:#A31515">"vtkPolyData"</span>);</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> <span style="color:blue">
return</span> 1;</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">}</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">I connect the filter to a vtkDelaunay2D like this:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">vtkSmartPointer<vtkDelaunay2D> delaunay = vtkSmartPointer <vtkDelaunay2D>::New();</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:green">//...</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">MeshToRGBFilter* rgbFilter =
<span style="color:blue">new</span> MeshToRGBFilter();</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">rgbFilter->SetInputConnection(delaunay->GetOutputPort());</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">The Delaunay filter definitely has an output. I confirmed that by rendering it.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">In the filter, in RequestData, I want to access the polydata from the Delaunay pass like this:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">int</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> MeshToRGBFilter::RequestData(</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> vtkInformation *vtkNotUsed(request),</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> vtkInformationVector **inputVector,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> vtkInformationVector *outputVector)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas">{</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> vtkPolyData* input = vtkPolyData::SafeDownCast(</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;text-autospace:none">
<span lang="EN-US" style="font-size:9.5pt;font-family:Consolas"> inInfo->Get(vtkDataObject::DATA_OBJECT()));</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">The input variable is then set to an instance of a vtkPolyData, but it contains just nothing:</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><img border="0" width="716" height="188" id="_x0000_i1025" src="cid:image001.png@01CDC89D.9D705DA0" alt="cid:image001.png@01CDC842.A1A38F60"><o:p></o:p></p>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US">Is there something I might have missed? How can I access the poly data?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="color:#888888"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="color:#888888">Nico</span><o:p></o:p></p>
</div>
</div>
</div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><span lang="EN-US"><br>
_______________________________________________<br>
Powered by </span><a href="http://www.kitware.com" target="_blank"><span lang="EN-US">www.kitware.com</span></a><span lang="EN-US"><br>
<br>
Visit other Kitware open-source projects at </span><a href="http://www.kitware.com/opensource/opensource.html" target="_blank"><span lang="EN-US">http://www.kitware.com/opensource/opensource.html</span></a><span lang="EN-US"><br>
<br>
Please keep messages on-topic and check the VTK FAQ at: </span><a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank"><span lang="EN-US">http://www.vtk.org/Wiki/VTK_FAQ</span></a><span lang="EN-US"><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
</span><a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank"><span lang="EN-US">http://www.vtk.org/mailman/listinfo/vtkusers</span></a><o:p></o:p></p>
</div>
</blockquote>
</div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
_______________________________________________<br>
Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">
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">
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">http://www.vtk.org/mailman/listinfo/vtkusers</a><o:p></o:p></p>
</blockquote>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>