[vtkusers] VTK slow to display 300 vtkArrowSource in real-time

[David Lonie]

On Thu, Oct 13, 2016 at 11:50 AM, David Lonie <david.lonie at kitware.com>
wrote:

> On Thu, Oct 13, 2016 at 11:27 AM, Olivier Ameline <olivameline at gmail.com>
> wrote:
>
>>
>> Thanks Dave.
>> This solution works well, but is there a means to have "zoomable" labels ?
>> At the moment, the labels size isn't changed when I zoom in the view.
>>
>
> Not that I'm aware of. Since vtkLabeledDataMapper renders 2D overlay text,
> it's not aware of depth at all. It could be done by writing a similar
> mapper that uses the new vtkBillboardTextActor3D class instead of
> vtkTextMapper under-the-covers, but this doesn't exist yet (AFAIK).
>

(I take that back -- BillboardTextActor3D wouldn't change size with depth.
vtkTextActor3D + vtkFollower would).
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