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

[Timothy Dwight Dunn]

Just got home and have a ton of Emails to respond to and then gone till
Tuesday (Wyoming bound for the eclipse). I'll draft up what I'm thing early
next week.



Tim Dunn
Scientific\Data Visualization & Visual Analytics for;
CIRES - Earth Lab-Analytics Hub
CU Research Computing (CURC)
Center for Research Data and Digital Scholarship (CRDDS)
tdunn at colorado.edu

On Thu, Aug 17, 2017 at 11:56 AM, David E DeMarle <dave.demarle at kitware.com>
wrote:

> 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 <(518)%20881-4909>
>
> 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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