<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>I checked the version, it is the same.
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<div style="margin:0 0 10px 0;"><b>Gesendet:</b> Montag, 23. Oktober 2017 um 20:32 Uhr<br/>
<b>Von:</b> "Sebastien Jourdain" <sebastien.jourdain@kitware.com><br/>
<b>An:</b> "Katrin Hartwig" <katrin_hartwig@gmx.de><br/>
<b>Cc:</b> vtkusers <vtkusers@vtk.org><br/>
<b>Betreff:</b> Re: [vtkusers] VTK-JS: How to get Position of actor</div>
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<div>Hum, looking at the code it seems that information should be properly set.
<div> </div>
<div><a href="https://github.com/Kitware/vtk-js/blob/master/Utilities/DataGenerator/vtk-data-converter.py#L182" target="_blank">https://github.com/Kitware/vtk-js/blob/master/Utilities/DataGenerator/vtk-data-converter.py#L182</a></div>
<div> </div>
<div>Are you using an older version?</div>
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<div class="gmail_quote">On Mon, Oct 23, 2017 at 2:29 PM, Sebastien Jourdain <span><<a href="mailto:sebastien.jourdain@kitware.com" onclick="parent.window.location.href='sebastien.jourdain@kitware.com'; return false;" target="_blank">sebastien.jourdain@kitware.com</a>></span> wrote:
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<div>Ok the issue is related to the <span style="font-size: 12.8px;">vtkDataConverter that does not properly define the number of component to 3 for points.</span>
<div><span style="font-size: 12.8px;">You can edit the generated json to fix that. This will fix the getBounds() call.</span></div>
<div> </div>
<div><span style="font-size: 12.8px;">I'm going to fix the </span><span style="font-size: 12.8px;">vtkDataConverter code.</span></div>
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<div class="HOEnZb">
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<div class="gmail_extra">
<div class="gmail_quote">On Mon, Oct 23, 2017 at 6:50 AM, Katrin Hartwig <span><<a href="mailto:katrin_hartwig@gmx.de" onclick="parent.window.location.href='katrin_hartwig@gmx.de'; return false;" target="_blank">katrin_hartwig@gmx.de</a>></span> wrote:
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<p>Hi Sebastien,</p>
I stored the data as vtk data and used the vtkDataConverter which seemed to work fine. When I run the code, every actor appears exactly at the right place. So I guess the information in the vtk data must be correct (without ever using any function like "setPosition"). Though I do not understand why I cannot retrieve the information of their positions in the code.
<p>Here is how I read my data files, it is a function I found in the documentation:</p>
<p>function loadSegment(string, actor, renderer, i){<br/>
const reader = vtkHttpDataSetReader.newInstance({ fetchGzip: true });<br/>
reader.setUrl(string).then(() => {<br/>
reader.loadData().then(() => {<br/>
renderer.resetCamera();<br/>
renderWindow.render();<br/>
});<br/>
});<br/>
const mapper = vtkMapper.newInstance();<br/>
mapper.setInputConnection(reader.getOutputPort());<br/>
actor.setMapper(mapper);<br/>
renderer.addActor(actor);<br/>
}</p>
<p>Any ideas what could be wrong?</p>
<p>Thank you for your help!</p>
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<div class="m_-6002465808145108987m_-6162415700551765856moz-cite-prefix">Am 20.10.2017 um 21:39 schrieb Sebastien Jourdain:</div>
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<div>Then I believe your dataset is not valid. How did you build it?
<div> </div>
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<div class="gmail_quote">On Fri, Oct 20, 2017 at 1:07 PM, Katrin Hartwig <span><<a href="mailto:katrin_hartwig@gmx.de" onclick="parent.window.location.href='katrin_hartwig@gmx.de'; return false;" target="_blank">katrin_hartwig@gmx.de</a>></span> wrote:
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<div>Hi Sebastian and Logan,
<div>
<div> </div>
<div>thank you a lot for your help and i apologize for my late answer!</div>
<div>Unfortunately I still could not solve the problem. I tried both suggestions:</div>
<div>With <strong>actor</strong>.getCenter() I get the default-values (0,0,0) for each actor. So I tried to get the information of the dataset as you suggested:</div>
<div><span> </span></div>
<div><span> dataset = mapper.getInputData();</span></div>
<div><span> bounds = dataset.getBounds();</span></div>
<div><span> </span></div>
<div>By doing so I get the following error massage:</div>
<div><strong> "getBounds called on an array with components of 1"</strong></div>
<div> </div>
<div>The output of getBounds remains default because of the error.</div>
<div> </div>
<div>As I could not find any solutions yet, I would be grateful for any help!</div>
<div> </div>
<div>Thank you</div>
<div>Katrin</div>
<div> </div>
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<div style="margin: 0 0 10.0px 0;"><b>Gesendet:</b> Montag, 18. September 2017 um 16:38 Uhr<br/>
<b>Von:</b> "Sebastien Jourdain" <<a href="mailto:sebastien.jourdain@kitware.com" onclick="parent.window.location.href='sebastien.jourdain@kitware.com'; return false;" target="_blank">sebastien.jourdain@kitware.com</a>><br/>
<b>An:</b> "Katrin Hartwig" <<a href="mailto:katrin_hartwig@gmx.de" onclick="parent.window.location.href='katrin_hartwig@gmx.de'; return false;" target="_blank">katrin_hartwig@gmx.de</a>><br/>
<b>Cc:</b> vtkusers <<a href="mailto:vtkusers@vtk.org" onclick="parent.window.location.href='vtkusers@vtk.org'; return false;" target="_blank">vtkusers@vtk.org</a>><br/>
<b>Betreff:</b> Re: [vtkusers] VTK-JS: How to get Position of actor</div>
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<div>Hi Katrin,
<div> </div>
<div>The actor position only describe the relative position to the data, that's why by default they are always (0,0,0).</div>
<div>Which means its your source or dataset that has the information about the position that you are looking for.</div>
<div> </div>
<div>For example to find the bounds of a rendered dataset you can do as follow.</div>
<div> </div>
<div>dataset = mapper.getInputData();</div>
<div>bounds = dataset.getBounds();</div>
<div> </div>
<div>// bounds is an array as follow:</div>
<div>// [ minX, maxX, minY, maxY, minZ, maxZ]</div>
<div> </div>
<div>Hope that helps,</div>
<div> </div>
<div>Otherwise you can learn more on the basic concepts behind VTK here: <a href="https://www.vtk.org/vtk-users-guide/" target="_blank">https://www.vtk.org/vtk-users-guide/</a></div>
<div> </div>
<div>Seb</div>
</div>
<div class="gmail_extra">
<div class="gmail_quote">On Mon, Sep 18, 2017 at 7:31 AM, Katrin Hartwig <span><<a href="mailto:katrin_hartwig@gmx.de" onclick="parent.window.location.href='katrin_hartwig@gmx.de'; return false;" target="_blank">katrin_hartwig@gmx.de</a>></span> wrote:
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<div style="font-family: Verdana;font-size: 12.0px;">
<div>Dear all,</div>
<div> </div>
<div>I am using a visualization of several actors with VTK-js. Unfortunately, when using <em>actor.getPosition() </em>I always get [0,0,0] as a result, no matter which actor I checked, although they appear on different positions in my rendering window.</div>
<div>How can I get the real positions or centers of the different actors?</div>
<div> </div>
<div>As I am completely new to VTK-js and I could not find any solutions to my problem, any help would be great!</div>
<div> </div>
<div>Thank you</div>
<div><span class="m_-6002465808145108987m_-6162415700551765856m_9222974002551251524HOEnZb"><font color="#888888">Katrin</font></span></div>
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