[vtkusers] VTK Light Model

Patricio Sandaña psandana at gmail.com
Mon Jun 5 16:27:34 EDT 2017

Hi Ken,

Sorry for to take too long to answer back. Reviewing VTK I could notice you
have vtkLightKit which seems to do it work as a preset quick setup of
lights. What I could notice is that they are allá directional lights, so
you can't get, let's say, "realistic shading" with them, as positional
lights allow some gradiation on edges with all the vertices with the same
normal. I could notice that the lighting model supports positional lights.

Is there any implementation, like vtkLightKit which provides a quick setup
of a light model including positional lights? Maybe experimental models
which I can take a look on?



El 17 ene. 2017 10:18, "Patricio Sandaña" <psandana at gmail.com> escribió:

> Hi Ken,
> Many thanks for the hints. I will take a look.
> Cheers,
> Pato
> El 17 ene. 2017 11:08, "Ken Martin" <ken.martin at kitware.com> escribió:
> It is all pretty much in Rendering/OpenGL2/vtkOpenGLPolyDataMapper.cxx
> except for shadows which are in vtkShadowMapBakerPass and vtkShadowMapPass
> On Tue, Jan 17, 2017 at 8:52 AM, Patricio Sandaña <psandana at gmail.com>
> wrote:
>> Hello everyone,
>> Can anybody tell me how the lighting model is implemented on VTK? I'm
>> looking for any concrete implementation. I've tracked vtkLights usage, but
>> I got nothing so far.
>> I want to play with the lighting models, but first I wanted to know how
>> they works.
>> Cheers,
>> Pato
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