<div dir="auto">If you can provide a compilable example we can take a look.</div><br><div class="gmail_quote"><div dir="ltr">On Thu, Mar 29, 2018, 9:54 AM Jay <<a href="mailto:jayavardhanravi@outlook.com">jayavardhanravi@outlook.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I am trying to obtain  the position of  the actor after the adding to<br>
assembly and making transforms.<br>
<br>
After each transformation I try to print the position and center but I<br>
always get the initial values or the values don't update as the transforms<br>
updates.<br>
<br>
Do I miss something ?<br>
<br>
The pseudo code:<br>
<br>
vtkSmartPointer<vtkCylinderSource> cyl =<br>
vtkSmartPointer<vtkCylinderSource>::New();<br>
        cyl->SetRadius(10);<br>
        cyl->SetHeight(50);<br>
        cyl->Update();<br>
        vtkSmartPointer<vtkPolyDataMapper> mapper =<br>
vtkSmartPointer<vtkPolyDataMapper>::New();<br>
        mapper->SetInputConnection(cyl->GetOutputPort());<br>
        vtkSmartPointer<vtkActor> act1 = vtkSmartPointer<vtkActor>::New();<br>
        act1->SetMapper(mapper);<br>
        vtkSmartPointer<vtkTransform> trans1 =<br>
vtkSmartPointer<vtkTransform>::New();<br>
        act1->SetUserTransform(trans1);<br>
<br>
        vtkSmartPointer<vtkCylinderSource> cyl1 =<br>
vtkSmartPointer<vtkCylinderSource>::New();<br>
        cyl1->SetRadius(10);<br>
        cyl1->SetHeight(50);<br>
        cyl1->Update();<br>
        vtkSmartPointer<vtkPolyDataMapper> mapper1 =<br>
vtkSmartPointer<vtkPolyDataMapper>::New();<br>
        mapper1->SetInputConnection(cyl1->GetOutputPort());<br>
        vtkSmartPointer<vtkActor> act2 = vtkSmartPointer<vtkActor>::New();<br>
        act2->SetMapper(mapper1);<br>
        vtkSmartPointer<vtkTransform> trans2 =<br>
vtkSmartPointer<vtkTransform>::New();<br>
        act2->SetUserTransform(trans2);<br>
<br>
        vtkSmartPointer<vtkAssembly> assembly =<br>
vtkSmartPointer<vtkAssembly>::New();<br>
        assembly->AddPart(act1);<br>
        assembly->AddPart(act2);<br>
        int count = 0;<br>
        while(count < 100)<br>
        {<br>
                trans2->Identity();<br>
                trans2->RotateX(30);<br>
                trans2->RotateY(90);<br>
                trans2->RotateZ(10);<br>
                trans2->Update();<br>
                renderer->AddActor(assembly);<br>
                renderer->Render();<br>
                count++;<br>
                std::cout << "Center : " << act2->GetCenter()[0] << " & " <<<br>
act2->GetCenter()[1] << " & " << act2->GetCenter()[2];<br>
                std::cout << "Position : " << act2->GetPosition()[0] << " & " <<<br>
act2->GetPosition()[1] << " & " << act2->GetPosition()[2];<br>
        }<br>
<br>
Any help or suggestions would be appreciated<br>
<br>
Regards,<br>
Jay<br>
<br>
<br>
<br>
--<br>
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