[Paraview] [EXTERNAL] OSRay and shadows

[Bob Flandard]

Thanks David,

The Python code works well enough for my use. I see what you mean about
5.1, it almost does what I want, but is messes up the light directions.

Regards, Bob


On 6 January 2017 at 13:49, David E DeMarle <dave.demarle at kitware.com>
wrote:

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