If you know at the beginning where actors are positionned ( behind or in front of plane ) , so you can divide your actors in 2 assemblies. In this case, look at this class : "vtkAssembly". This class allows to change properties for all actors belonging to the assembly.<br>
If you try to check if the actor is behind/front of a plane and then change the properties, I don't have solution.<br><br><div class="gmail_quote">2010/8/31 Nicolas Rannou <span dir="ltr"><<a href="mailto:nicolas_rannou@hms.harvard.edu">nicolas_rannou@hms.harvard.edu</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi all,<br>
<br>
I would like to show/hide actors which are:<br>
- behind or in front of a plane widget<br>
- inside or outside a box widget<br>
and to be able to interact with the widgets in real time to modify the visibility of the actors.<br>
<br>
My main issue is that I am working with thousands of actors and checking the bounding box of each actor appears not to be efficient enough...<br>
<br>
Would somebody know a good way to deal with high number of actors?<br>
<br>
Thanks,<br>
<br>
Nicolas<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Bertrand de Boisdeffre<br>Etudiant 2A SICOM Phelma Grenoble-INP<br><br>