eradiate.scenes.bsdfs.LambertianBSDF

class eradiate.scenes.bsdfs.LambertianBSDF(id=None, reflectance=0.5)[source]

Bases: BSDF

Lambertian BSDF [lambertian].

This class implements the Lambertian (a.k.a. diffuse) reflectance model. A surface with this scattering model attached scatters radiation equally in every direction.

Parameters:

  • id (str, optional) – Identifier of the current scene element.

  • reflectance (Spectrum or dict or float, default: 0.5) – Reflectance spectrum. Can be initialized with a dictionary processed by spectrum_factory.

Fields:

  • id (str or None) – Identifier of the current scene element.

  • reflectance (Spectrum) – Reflectance spectrum.

traverse(callback)

Traverse this scene element and collect kernel dictionary template and parameter update map contributions.

Parameters:

callback (SceneTraversal) – Callback data structure storing the collected data.

update()

Enforce internal state consistency. This method should be called when fields are modified. It is automatically called as a post-init step.

property objects

Map of child objects associated with this scene element.

Returns:

dict – A dictionary mapping object names to a corresponding object to be inserted in the Eradiate scene graph.

property params
Returns:

dict[str, SceneParameter] or None – A dictionary mapping parameter paths, consisting of dot-separated strings, to a corresponding update protocol.

See also

SceneParameter, KernelSceneParameterMap

property template

Kernel dictionary template contents associated with this scene element.

Returns:

dict – A flat dictionary mapping dot-separated strings describing the path of an item in the nested scene dictionary to values. Values may be objects which can be directly used by the mitsuba.load_dict() function, or DictParameter instances which must be rendered.

See also

DictParameter, KernelDict