<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:verdana,helvetica,sans-serif;font-size:10pt"><div>It works! <br><br>Thanks<br></div><div style="font-family: verdana,helvetica,sans-serif; font-size: 10pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ----<br>From: Sercani <sercanimailgroups@gmail.com><br>To: John Eke <tonee47@yahoo.com>; vtkusers@vtk.org<br>Sent: Friday, August 15, 2008 4:52:11 AM<br>Subject: RE: [vtkusers] How to get a reference to a picked actor<br><br>
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<p class="MsoNormal"><span style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(79, 129, 189);">Hi John;</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(79, 129, 189);">Check out this code:</span></p>
<p class="MsoNormal" style=""><span style="font-size: 11pt; font-family: Consolas;">vtkPropPicker *picker=vtkPropPicker::New();</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Consolas;">picker->Pick(point.x,
point.y,0.0,renderer); /*this point coordinates must be in display
coordinates!!!renderer is your renderer that contains these actors..*/</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Consolas;">picker->GetActor();
//this is your pointer to picked actor…You can also write this: vtkActor
*actor=vtkActor::New();actor=picker->GetActor();</span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: Consolas;"> </span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(79, 129, 189);">I recommend using vtkPropPicker instead of vtkPicker because
PropPicker is extremely fast…</span><span style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(79, 129, 189);"></span></p>
<p class="MsoNormal"><span style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);"> </span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt; font-family: "Tahoma","sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "Tahoma","sans-serif";">
vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org] <b>On Behalf Of </b>John
Eke<br>
<b>Sent:</b> Thursday, August 14, 2008 7:28 PM<br>
<b>To:</b> vtkusers@vtk.org<br>
<b>Subject:</b> [vtkusers] How to get a reference to a picked actor</span></p>
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<p class="MsoNormal"><span style="font-size: 10pt; font-family: "Verdana","sans-serif";">Hi,<br>
<br>
I have a bit of code where I create a pointer to vtkActor, then add it to a
Renderer. After that I set the pointer to NULL so I have no reference to it
anymore. Say I have several of such actors within the same Renderer, how can I
perform a pick, and get back a reference to the picked actor?<br>
<br>
All this is being done within my subclass of vtkInteractorStyle. OnMouseMove, I
draw an actor, and add it to the renderer. OnLeftButtonDown I perform a pick on
any of the actors drawn. If someone could please point me in the right
direction, I will be very greatful. I just need to know how to get a pointer to
an actor once a pick is performed.<br>
<br>
Thanks</span></p>
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