<div dir="ltr">The PickTextureDataOn() method must be called before the Pick.</div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 29, 2016 at 7:18 AM, Lonni Besançon <span dir="ltr"><<a href="mailto:lonni.besancon@gmail.com" target="_blank">lonni.besancon@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello David,<br>
<br>
Sorry I omitted this detail. Indeed that's exactly what I'm doing.<br>
Here the complete pipeline:<br>
/vtkSmartPointer<vtkImageData> ima = reslice->GetOutput();<br>
vtkSmartPointer<vtkDataArray> data = ima->GetPointData()->GetScalars();<br>
vtkSmartPointer<vtkTexture> texture = vtkSmartPointer<vtkTexture>::New();<br>
texture->SetInputData(ima);<br>
texture->InterpolateOn();<br>
....<br>
vtkSmartPointer<vtkPolyDataMapper> planeMapper =<br>
vtkSmartPointer<vtkPolyDataMapper>::New();<br>
planeMapper->SetInputConnection(plane->GetOutputPort());<br>
...<br>
vtkSmartPointer<vtkActor> planeActor = vtkSmartPointer<vtkActor>::New();<br>
planeActor->SetTexture(texture);<br>
planeActor->SetMapper(planeMapper);/<br>
<br>
I tried your solution with the following code:<br>
/if(picker->GetActor() == foo->planeActor){<br>
picker->PickTextureDataOn();<br>
double position[3];<br>
picker->GetMapperPosition(position);<br>
LOGW("Point position Initial = %f ::: %f :::<br>
%f",position[0],position[1],position[2]);<br>
double point[4];<br>
point[0] = position[0] ;<br>
point[1] = position[1] ;<br>
point[2] = position[2] ;<br>
point[3] = 1 ;<br>
resliceAxes->MultiplyPoint(point, point); // My reslice axes matrix<br>
LOGW("Position in Volume = %f ;; %f ;; %f ;;<br>
%f",point[0],point[1],point[2],point[3] );<br>
<br>
}<br>
/<br>
<br>
Yet the values I get are weird. I tried having the plane parallel to the<br>
screen at a given depth d, and the volume actor not moved at all. The first<br>
log is ok though, it gives me values such as:<br>
0.125766 ::: 0.176741 ::: 0.000000<br>
However the values I get after the multiplication do not seem so good, no<br>
matter where I trick to "click" I always get X value between 51.5 and 52.5 (<br>
X = 51.5 is the middle of the x dimension of my data ), and Y values between<br>
47 and 48 (similarly 47 is the middle of the y dimension of my data).<br>
The depth value I get however correspond very well to the position of my<br>
plane, so I'm guessing this value is good.<br>
<br>
Am I doing something wrong? Or maybe the pipeline description I gave you was<br>
not enough.<br>
<br>
Thanks again for your help<br>
<br>
<br>
<br>
--<br>
View this message in context: <a href="http://vtk.1045678.n5.nabble.com/vtkPicker-returned-actor-tp5736763p5736920.html" rel="noreferrer" target="_blank">http://vtk.1045678.n5.nabble.com/vtkPicker-returned-actor-tp5736763p5736920.html</a><br>
<div class="HOEnZb"><div class="h5">Sent from the VTK - Users mailing list archive at Nabble.com.<br>
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