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<p>Thank you very much! <br>
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<p>I am using VTK 7.0 and I think <font size="2"><span style="font-size:10pt;">vtkBillboardTextActor3D</span></font> is not available in this version.<br>
I tried vtkTextActor3D but I need a text which is always facing the camera.<br>
<br>
I think it must be possible to calculate a new position point P' (bottom left corner) which leads to a text
<br>
whose center is at the desired position P.<br>
<br>
I tried to use follower->getCenter() to get the center of the bounding box of my text. But now I don't know how to shift<br>
the position point (bottom left corner) in a manner that the center point = my desired position.<br>
<br>
<br>
<br>
<br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>Von:</b> David Lonie <david.lonie@kitware.com><br>
<b>Gesendet:</b> Donnerstag, 09. Februar 2017 18:35<br>
<b>An:</b> M. Jordan<br>
<b>Cc:</b> vtkusers@vtk.org<br>
<b>Betreff:</b> Re: [vtkusers] vtkTextActor align to center of text</font>
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<font size="2"><span style="font-size:10pt;">
<div class="PlainText">You'll likely have better luck using vtkTextActor3D or<br>
vtkBillboardTextActor3D. These have vtkTextProperties you can modify<br>
to set things like justification/alignment.<br>
<br>
HTH,<br>
Dave<br>
<br>
On Thu, Feb 9, 2017 at 6:37 AM, M. Jordan <mjordan@live.at> wrote:<br>
> Hi,<br>
><br>
> I am creating a 3D text like this:<br>
><br>
> // create text<br>
> vtkSmartPointer<vtkVectorText> textSource =<br>
> vtkSmartPointer<vtkVectorText>::New();<br>
> textSource->SetText("TEST");<br>
> textSource->Update();<br>
> // create a mapper for the text<br>
> vtkSmartPointer<vtkPolyDataMapper> txtmapper =<br>
> vtkSmartPointer<vtkPolyDataMapper>::New();<br>
> txtmapper->SetInputConnection(transformFilter->GetOutputPort());<br>
> // create a subclass of vtkActor: a vtkFollower that remains facing the<br>
> camera<br>
> vtkSmartPointer<vtkFollower> follower =<br>
> vtkSmartPointer<vtkFollower>::New();<br>
> follower->SetMapper(txtmapper);<br>
> follower->SetCamera(renderer->GetActiveCamera());<br>
> follower->SetPosition(10.0,20.0,30.0);<br>
><br>
> Now the passed follower position is approximately the bottom left corner of<br>
> my text.<br>
><br>
> How can I achieve a text which is centered about my desired position?<br>
> For example the text "101" should result in a 3D text with the center being<br>
> located in the middle of the "0"<br>
><br>
> Thank you very much!<br>
><br>
><br>
><br>
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