[vtkusers] Put labels onto image

[David Doria]

On Fri, Aug 26, 2011 at 3:43 AM, Xiaopeng Yang <yxp233 at postech.ac.kr> wrote:

> Hi Wayne,****
>
> ** **
>
> It works good. Thank you. However, when I rotate the 3D object, the caption
> which associated with a point on the 3D object should be covered (invisible)
> when that point is rotated to the backside (invisible). But is always
> visible and appear on the object, which can mislead the user  to know the
> position of the caption.****
>
> ** **
>
> Do you have any good idea to avoid this happening?****
>
> ** **
>
> Thanks,****
>
> Xiaopeng
>

CaptionActor2D is great for 2D, but for 3D I think you'll want:

http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/Follower
or
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Widgets/Caption

David
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