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<p>Hi Dean,<br>
<br>
Thank you for your help.<br>
This example is not suitable with what I am asking about.</p>
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</p>
<div id="Signature"><font size="3" face="Garamond">Abdelkhalek Bakkari</font>
<div><span style="line-height:14px"><font size="3" face="Garamond">Ph.D candidate in Computer Science</font></span></div>
<div><span style="line-height:20.82666778564453px; background-color:rgb(255,255,255)"><font face="Garamond" size="3">Institute of Applied Computer Science</font></span></div>
<div><span style="line-height:18.399999618530273px"><font face="Garamond" size="3">Lodz University of Technology, Poland</font></span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Dean Inglis <inglis.dl@gmail.com><br>
<b>Sent:</b> 07 November 2016 15:13<br>
<b>To:</b> Abdelkhalek Bakkari<br>
<b>Cc:</b> VTK Mailing List<br>
<b>Subject:</b> Re: [vtkusers] Mouse release and mapping (x,y) to slice (i,j)</font>
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<div dir="ltr">Hi
<div><br>
here's one way to do what you want:<br>
<a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/PickingAPixel2" id="LPlnk195507" previewremoved="true">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/PickingAPixel2</a><br>
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<div>You do not have to involve Qt events ... add a VTK callback that<br>
listens to VTK events.<br>
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<div>- Dean<br>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Nov 7, 2016 at 8:55 AM, Abdelkhalek Bakkari <span dir="ltr">
<<a href="mailto:bakkari.abdelkhalek@hotmail.fr" target="_blank">bakkari.abdelkhalek@hotmail.fr</a>></span> wrote:<br>
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<p style="margin-right:0px; margin-bottom:1em; margin-left:0px; padding:0px; border:0px; font-size:15px; clear:both; color:rgb(36,39,41); font-family:Arial,"Helvetica Neue",Helvetica,sans-serif">
<span style="font-family:"Times New Roman",Times,serif"></span></p>
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<span style="font-family:"Times New Roman",Times,serif">Dear VTK users</span><span style="font-family:"Times New Roman",Times,serif">,</span></p>
<p style="margin-right:0px; margin-bottom:1em; margin-left:0px; padding:0px; border:0px; font-size:15px; clear:both; color:rgb(36,39,41); font-family:Arial,"Helvetica Neue",Helvetica,sans-serif">
<br>
<br>
<span style="font-family:"Times New Roman",Times,serif">I am using QT and VTK. I created a mouse release method to use it inside a QVTKWidget :</span></p>
<pre class="m_-8826215757706667522x_lang-cpp m_-8826215757706667522x_prettyprint m_-8826215757706667522x_prettyprinted" style="margin-top:0px; margin-bottom:1em; padding:5px; border:0px; font-size:13px; width:auto; max-height:600px; overflow:auto; font-family:Consolas,Menlo,Monaco,"Lucida Console","Liberation Mono","DejaVu Sans Mono","Bitstream Vera Sans Mono","Courier New",monospace,sans-serif; background-color:rgb(239,240,241); color:rgb(57,51,24); word-wrap:normal"><code style="margin:0px; padding:0px; border:0px; font-family:Consolas,Menlo,Monaco,"Lucida Console","Liberation Mono","DejaVu Sans Mono","Bitstream Vera Sans Mono","Courier New",monospace,sans-serif; white-space:inherit"><span class="m_-8826215757706667522x_kwd" style="margin:0px; padding:0px; border:0px; color:rgb(16,16,148)">void</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)"> </span><span class="m_-8826215757706667522x_typ" style="margin:0px; padding:0px; border:0px; color:rgb(43,145,175)">MyQVTKWidget</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">::</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">mouseReleaseEven<wbr>t</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">(</span><span class="m_-8826215757706667522x_typ" style="margin:0px; padding:0px; border:0px; color:rgb(43,145,175)">QMouseEvent</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">*</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)"> event</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">)</span></code></pre>
<p style="margin-right:0px; margin-bottom:1em; margin-left:0px; padding:0px; border:0px; font-size:15px; clear:both; color:rgb(36,39,41); font-family:Arial,"Helvetica Neue",Helvetica,sans-serif">
{</p>
<pre class="m_-8826215757706667522x_lang-cpp m_-8826215757706667522x_prettyprint m_-8826215757706667522x_prettyprinted" style="margin-top:0px; margin-bottom:1em; padding:5px; border:0px; font-size:13px; width:auto; max-height:600px; overflow:auto; font-family:Consolas,Menlo,Monaco,"Lucida Console","Liberation Mono","DejaVu Sans Mono","Bitstream Vera Sans Mono","Courier New",monospace,sans-serif; background-color:rgb(239,240,241); color:rgb(57,51,24); word-wrap:normal"><code style="margin:0px; padding:0px; border:0px; font-family:Consolas,Menlo,Monaco,"Lucida Console","Liberation Mono","DejaVu Sans Mono","Bitstream Vera Sans Mono","Courier New",monospace,sans-serif; white-space:inherit"><span class="m_-8826215757706667522x_kwd" style="margin:0px; padding:0px; border:0px; color:rgb(16,16,148)">if</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)"> </span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">(</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">pMainWindow</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">)</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">
</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">{</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">
</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">((</span><span class="m_-8826215757706667522x_typ" style="margin:0px; padding:0px; border:0px; color:rgb(43,145,175)">MainWindow</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)"> </span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">*)</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">pMainWindow</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">)-></span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">myMouseRelease<wbr>Event</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">(</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">event</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">);</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">
</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">}</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">
</span><span class="m_-8826215757706667522x_com" style="margin:0px; padding:0px; border:0px; color:rgb(133,140,147)">// call the super class to avoid troubles</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">
</span><span class="m_-8826215757706667522x_typ" style="margin:0px; padding:0px; border:0px; color:rgb(43,145,175)">QVTKWidget</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">::</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">mouseReleaseEvent</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">(</span><span class="m_-8826215757706667522x_pln" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)"><wbr>event</span><span class="m_-8826215757706667522x_pun" style="margin:0px; padding:0px; border:0px; color:rgb(48,51,54)">);</span></code></pre>
<p style="margin-right:0px; margin-bottom:1em; margin-left:0px; padding:0px; border:0px; font-size:15px; clear:both; color:rgb(36,39,41); font-family:Arial,"Helvetica Neue",Helvetica,sans-serif">
}</p>
<p style="margin-right:0px; margin-bottom:1em; margin-left:0px; padding:0px; border:0px; font-size:15px; clear:both; color:rgb(36,39,41); font-family:Arial,"Helvetica Neue",Helvetica,sans-serif">
<span style="font-family:"Times New Roman",Times,serif">Now, I would like to map (x,y) to slice (i,j). Generally, mouse position should be mapped into ( i, j) of current slice. I</span><span style="font-family:"Times New Roman",Times,serif">t depends on the
zoom factor, </span><span style="font-family:"Times New Roman",Times,serif">aspect ratio of the slice </span><span style="font-family:"Times New Roman",Times,serif">and the window size.</span><span style="font-family:"Times New Roman",Times,serif"><br>
</span><span style="font-family:"Times New Roman",Times,serif"> </span></p>
<p style="margin-right:0px; margin-bottom:1em; margin-left:0px; padding:0px; border:0px; font-size:15px; clear:both; color:rgb(36,39,41); font-family:Arial,"Helvetica Neue",Helvetica,sans-serif">
<span style="font-family:"Times New Roman",Times,serif">But, I am wondering about how can I solve this issue. </span></p>
<p style="margin-right:0px; margin-bottom:1em; margin-left:0px; padding:0px; border:0px; font-size:15px; clear:both; color:rgb(36,39,41); font-family:Arial,"Helvetica Neue",Helvetica,sans-serif">
<span style="color:rgb(33,33,33); font-family:"Times New Roman",Times,serif"><br>
</span></p>
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<span style="color:rgb(33,33,33); font-family:"Times New Roman",Times,serif"><br>
</span></p>
<p style="margin-right:0px; margin-bottom:1em; margin-left:0px; padding:0px; border:0px; font-size:15px; clear:both; color:rgb(36,39,41); font-family:Arial,"Helvetica Neue",Helvetica,sans-serif">
<span style="font-family:"Times New Roman",Times,serif"></span><span style="color:rgb(33,33,33); font-family:"Times New Roman",Times,serif">Thanks in advance!</span></p>
<span style="font-family:"Times New Roman",Times,serif; font-size:16px">Best regards,</span><span style="font-family:"Times New Roman",Times,serif; font-size:16px"></span>
<p style="font-family:"Times New Roman",Times,serif; font-size:16px"></p>
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<div id="m_-8826215757706667522x_Signature" style="font-family:"Times New Roman",Times,serif; font-size:16px">
<font face="Garamond" size="3">Abdelkhalek Bakkari</font>
<div><span style="line-height:14px"><font face="Garamond" size="3">Ph.D candidate in Computer Science</font></span></div>
<div><span style="line-height:20.8267px"><font face="Garamond" size="3">Institute of Applied Computer Science</font></span></div>
<div><span style="line-height:18.4px"><font face="Garamond" size="3">Lodz University of Technology, Poland</font></span></div>
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