[Paraview] [EXTERNAL] OSRay and shadows

[David E DeMarle]

Bob,

There is no control for that just yet. Work is in progress to provide the
full complement of light controls. If you are working in builting mode, you
can resort to python as follows.

lights = GetActiveView().GetRenderer().GetLights()
for i in range(0, lights.GetNumberOfItems()):
   lights.GetItemAsObject(i).SetLightTypeToSceneLight()

Note: the light position bug in 5.1 that Alan was referring to had the
effect of making making the light positions fixed (scene lights in vtk
terms). In 5.2 that was corrected and now they are camera relative lights
that move with the viewer as they do with GL rendering.

hope that helps





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

On Fri, Jan 6, 2017 at 4:39 AM, Bob Flandard <bflandard at gmail.com> wrote:

> Hi Scott,
>
> Here's a state file, where the shadow of the cylinder is approximately
> perpendicular the the arrows on the ground. As I move the model around in
> 3d with the mouse, I'd like the shadow to remain perpendicular to the
> arrows, similar to how it would look if I walked around the cylinder on a
> sunny day (assuming I didn't walk extremely slowly). I'd like the light
> source to be fixed relative to ground rather than the screen - I'm
> surprised that isn't the default or an option (at least I haven't found it).
>
> Thanks, Bob
>
> ParaView 5.2 on Windows 7
>
> On 6 January 2017 at 00:17, Scott, W Alan <wascott at sandia.gov> wrote:
>
>> Bob,
>>
>> What version of ParaView are you using?  5.1.2 is known to have issues.
>>
>>
>>
>> Alan
>>
>>
>>
>> *From:* ParaView [mailto:paraview-bounces at paraview.org] *On Behalf Of *Bob
>> Flandard
>> *Sent:* Thursday, January 5, 2017 5:13 PM
>> *To:* paraview <paraview at paraview.org>
>> *Subject:* [EXTERNAL] [Paraview] OSRay and shadows
>>
>>
>>
>> Hello,
>>
>> How can I lock the light source direction to change with the 3d viewing
>> angle, so that the shadows with OSRay don't imply a moving light source as
>> I rotate the model in 3d?
>>
>> Thanks, Bob
>>
>
>
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