[Paraview] [EXTERNAL] Is anyone using the Extra Headlight in ParaView?

[David E DeMarle]

The only reason to "get rid of it" is because something new is coming that
is a superset of its functionality. From a user perspective it would be
instead of "turn on the extra headlight" it would be "add light and select
headlight as its type". Afterward they would behave exactly the same.




David E DeMarle
Kitware, Inc.
Principal Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Thu, Aug 17, 2017 at 1:51 PM, Moreland, Kenneth <kmorel at sandia.gov>
wrote:

> The use case Alan brings up is captured in bug 17236:
> https://gitlab.kitware.com/paraview/paraview/issues/17236. Until that bug
> is fixed, I would argue strenuously against disabling the headlight. The
> implementation of the bug fix may or may not require the headlight to stick
> around (depending on how it is implemented).
>
>
>
> I don’t personally have any other use case for the headlight, but it is a
> convenient way to get a bright light shining directly on the view. It’s
> valuable to quickly illuminate an object where the shading has made the
> colors murky. Is there a compelling reason to get rid of it? It’s tucked
> away in an innocuous corner of the GUI.
>
>
>
> -Ken
>
>
>
> *From:* ParaView [mailto:paraview-bounces at paraview.org] *On Behalf Of *Scott,
> W Alan
> *Sent:* Thursday, August 17, 2017 11:16 AM
> *To:* DeMarle, David E. (External Contacts) <dave.demarle at kitware.com>;
> paraview at paraview.org
> *Subject:* Re: [Paraview] [EXTERNAL] Is anyone using the Extra Headlight
> in ParaView?
>
>
>
> No objection here.  Only thought I have is that the lights may be setup by
> default slightly differently for 2d and 3d.  We may want a “headlight” for
> 2d.
>
>
>
>
>
> Alan
>
>
>
> *From:* ParaView [mailto:paraview-bounces at paraview.org
> <paraview-bounces at paraview.org>] *On Behalf Of *David E DeMarle
> *Sent:* Thursday, August 17, 2017 7:35 AM
> *To:* paraview at paraview.org
> *Subject:* [EXTERNAL] [Paraview] Is anyone using the Extra Headlight in
> ParaView?
>
>
>
> By default, Paraview illuminates the scene with a vtkLightKit
> <http://www.vtk.org/doc/release/5.0/html/a01682.html>. You can however
> add an extra headlight. I am about to add a more general capability which
> lets you add any number and any kind of light, including the headlight.
> When I do that, the semi-hardcoded extra headlight becomes redundant. I
> would like to remove it to streamline both the code and the UI.
>
> Are there any objections to me doing that?
>
> David E DeMarle
> Kitware, Inc.
> Principal Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909 <(518)%20881-4909>
>
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