<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=utf-8">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@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:Tahoma;
panose-1:2 11 6 4 3 5 4 4 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;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Vorformatiert Zchn";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
span.apple-style-span
{mso-style-name:apple-style-span;}
span.HTMLVorformatiertZchn
{mso-style-name:"HTML Vorformatiert Zchn";
mso-style-priority:99;
mso-style-link:"HTML Vorformatiert";
font-family:"Consolas","serif";}
span.E-MailFormatvorlage20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page Section1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.Section1
{page:Section1;}
-->
</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 style='word-wrap: break-word;-webkit-nbsp-mode: space;
-webkit-line-break: after-white-space'>
<div class=Section1>
<p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Eric and VTK-Users.<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'><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'>Yes, there is a misunderstanding! Let me explain.<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'>I’m using VTK to visualize simulation results from our own
CFD-software.<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'>All parameters concerning the visualization is controlled
through a C++-class in <b>our</b> (!) code.<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'><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'>When the VTK-part is called to visualize it loops through all the
parameters.<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'>It will check if the user wants to have scalar or vector data –
especially which kind of scalar data (there are more than one).<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'>Further it will check if there should be an implicit cutting
plane or vector glyphs or streamlines.<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'>The list goes on and on with stuff like this.<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'><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'>So, then interesting part is when the user changes some
parameters these changes will only affect the information stored in our own
class.<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'>The VTK-part will not know anything about it, unless it will begin
looping through the parameters <b>again</b>.<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'><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'>The VTK-stuff is isolated inside a function ShowRenderWindow()
and everything concerning VTK will happen within.<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'>This also means that when the user changes anything of the parameters
he will be located inside a callback-function inside the
ShowRenderWindow-function!<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'>So the question will be: How can I convince the code to re-run
the function ShowRenderWindow while the program is currently active inside this
function?!<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'><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'>Hope I made myself clear.<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'>Thanks so far.<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'>Sebastian<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'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Eric E. Monson
[mailto:emonson@cs.duke.edu] <br>
<b>Gesendet:</b> Donnerstag, 8. April 2010 15:39<br>
<b>An:</b> Sebastian Gatzka<br>
<b>Cc:</b> vtkusers<br>
<b>Betreff:</b> Re: [vtkusers] Updating the RenderWindows after user
interaction<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Sebastian,<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>I think there may be some misunderstanding, then, of what
you mean when you say that the user has altered "different options of the
displayed objects", and what you mean by "update".<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>If, after user interaction, you still have a valid pipeline
from sources through filters to render window, then when the render window is
asked to render itself, it wants to make sure it has all the right information,
so that request is propagated up the pipeline and any sources or filters that
have been Modified and need to be updated will do so. This is way the standard
"demand-driven" pipeline of VTK works.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>So, that's why RenderWindow->Render(); was suggested. If
this doesn't answer your question you may need to clarify what type of changes
are being made to the pipeline and what needs to be "updated" so that
it's more clear to us why executing the pipeline won't update all of its
components.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal>-Eric<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>------------------------------------------------------<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>Eric E Monson<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'>Duke Visualization Technology Group<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica","sans-serif";
color:black'><o:p> </o:p></span></p>
</div>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<div>
<p class=MsoNormal>On Apr 8, 2010, at 9:12 AM, Sebastian Gatzka wrote:<o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br>
<o:p></o:p></p>
<div>
<p class=MsoNormal>Thanks for your answer.<br>
This is not what I meant. The new parameters incorporate even the objects
visualilsed itself.<br>
So they will need to be created again as well.<br>
<b><br>
I want to go through the pipeline to update it, not just to update the render
window!</b><br>
<br>
Am 08.04.2010 14:50, schrieb sercani: <o:p></o:p></p>
<p class=MsoNormal>08.04.2010 15:29, Sebastian Gatzka yazmış: <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Helvetica","sans-serif"'>Hello.<br>
<br>
I made some callback functions which will allow the user to alter different
options of the displayed objects.<br>
Is there a way to <b>tell the complete render pipeline to update itself</b>
with the new set of settings?<br>
<br>
Currently I will have to exit the Render Window and restart it to have the new
settings applied.<br>
<br>
Sebastian<br>
<br>
</span><o:p></o:p></p>
<pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>Powered by <a
href="http://www.kitware.com/">www.kitware.com</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Visit other Kitware open-source projects at <a
href="http://www.kitware.com/opensource/opensource.html">http://www.kitware.com/opensource/opensource.html</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Please keep messages on-topic and check the VTK FAQ at: <a
href="http://www.vtk.org/Wiki/VTK_FAQ">http://www.vtk.org/Wiki/VTK_FAQ</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Follow this link to subscribe/unsubscribe:<o:p></o:p></pre><pre><a
href="http://www.vtk.org/mailman/listinfo/vtkusers">http://www.vtk.org/mailman/listinfo/vtkusers</a><o:p></o:p></pre><pre> <o:p></o:p></pre>
<p class=MsoNormal><br>
perhaps RenderWindow->Render(); ?<o:p></o:p></p>
</div>
<p class=MsoNormal>_______________________________________________<br>
Powered by <a href="http://www.kitware.com">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a
href="http://www.kitware.com/opensource/opensource.html">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">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">http://www.vtk.org/mailman/listinfo/vtkusers</a><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</div>
</body>
</html>