## Light class

The light illuminates the scene.




The formula to calculate the total attenuation of light is:
`A = ConstantAttenuation + (Dist * LinearAttenuation) + ((Dist^2) * QuadraticAttenuation)`



**Inheritance:** [`Light`](/3d/python-net/aspose.threed.entities/light) → 
[`Frustum`](/3d/python-net/aspose.threed.entities/frustum) → 
[`Entity`](/3d/python-net/aspose.threed/entity) → 
[`SceneObject`](/3d/python-net/aspose.threed/sceneobject) → 
[`A3DObject`](/3d/python-net/aspose.threed/a3dobject)



The Light type exposes the following members:

### Constructors
| Constructor | Description |
| :- | :- |
| [`__init__(self)`](/3d/python-net/aspose.threed.entities/light/__init__/#) | Initializes a new instance of the [`Light`](/3d/python-net/aspose.threed.entities/light) class. |
| [`__init__(self, name)`](/3d/python-net/aspose.threed.entities/light/__init__/#system.string) | Initializes a new instance of the [`Light`](/3d/python-net/aspose.threed.entities/light) class. |
| [`__init__(self, name, type)`](/3d/python-net/aspose.threed.entities/light/__init__/#system.string-aspose.threed.entities.lighttype) | Initializes a new instance of the [`Light`](/3d/python-net/aspose.threed.entities/light) class. |


### Properties
| Property | Description |
| :- | :- |
| [name](/3d/python-net/aspose.threed.entities/light/name) | Gets or sets the name. |
| [properties](/3d/python-net/aspose.threed.entities/light/properties) | Gets the collection of all properties. |
| [scene](/3d/python-net/aspose.threed.entities/light/scene) | Gets the scene that this object belongs to |
| [parent_nodes](/3d/python-net/aspose.threed.entities/light/parent_nodes) | Gets all parent nodes, an entity can be attached to multiple parent nodes for geometry instancing |
| [excluded](/3d/python-net/aspose.threed.entities/light/excluded) | Gets or sets whether to exclude this entity during exporting. |
| [parent_node](/3d/python-net/aspose.threed.entities/light/parent_node) | Gets or sets the first parent node, if set the first parent node, this entity will be detached from other parent nodes. |
| [rotation_mode](/3d/python-net/aspose.threed.entities/light/rotation_mode) | Gets or sets the frustum's orientation mode
<br/>This property only works when the [`Frustum.target`](/3d/python-net/aspose.threed.entities/frustum#target) is null.
<br/>If the value is [`RotationMode.FIXED_TARGET`](/3d/python-net/aspose.threed.entities/rotationmode#FIXED_TARGET), the direction is always calculated by the property [`Frustum.look_at`](/3d/python-net/aspose.threed.entities/frustum#look_at)
<br/>Otherwise the [`Frustum.look_at`](/3d/python-net/aspose.threed.entities/frustum#look_at) is always calculated by the [`Frustum.direction`](/3d/python-net/aspose.threed.entities/frustum#direction) |
| [near_plane](/3d/python-net/aspose.threed.entities/light/near_plane) | Gets or sets the frustum's near plane distance. |
| [far_plane](/3d/python-net/aspose.threed.entities/light/far_plane) | Gets or sets the frustum's far plane distance. |
| [aspect](/3d/python-net/aspose.threed.entities/light/aspect) | Gets or sets the aspect ratio of the frustum |
| [ortho_height](/3d/python-net/aspose.threed.entities/light/ortho_height) | Gets or sets the height when frustum in orthographic projection. |
| [up](/3d/python-net/aspose.threed.entities/light/up) | Gets or sets the up direction of the camera |
| [look_at](/3d/python-net/aspose.threed.entities/light/look_at) | Gets or sets the the interested position that the camera is looking at. |
| [direction](/3d/python-net/aspose.threed.entities/light/direction) | Gets or sets the direction that the camera is looking at.
<br/>Changes on this property will also affects the [`Frustum.look_at`](/3d/python-net/aspose.threed.entities/frustum#look_at) and [`Frustum.target`](/3d/python-net/aspose.threed.entities/frustum#target). |
| [target](/3d/python-net/aspose.threed.entities/light/target) | Gets or sets the target that the camera is looking at.
<br/>If the user supports this property, it should be prior to [`Frustum.look_at`](/3d/python-net/aspose.threed.entities/frustum#look_at) property. |
| [color](/3d/python-net/aspose.threed.entities/light/color) | Gets or sets the light's color |
| [light_type](/3d/python-net/aspose.threed.entities/light/light_type) | Gets or sets the light's type |
| [cast_light](/3d/python-net/aspose.threed.entities/light/cast_light) | Gets or sets if the current light instance can illuminate other objects. |
| [intensity](/3d/python-net/aspose.threed.entities/light/intensity) | Gets or sets the light's intensity, default value is 100 |
| [hot_spot](/3d/python-net/aspose.threed.entities/light/hot_spot) | Gets or sets the hot spot cone angle(in degrees). |
| [falloff](/3d/python-net/aspose.threed.entities/light/falloff) | Gets or sets the falloff cone angle (in degrees). |
| [constant_attenuation](/3d/python-net/aspose.threed.entities/light/constant_attenuation) | Gets or sets the constant attenuation to calculate the total attenuation of the light |
| [linear_attenuation](/3d/python-net/aspose.threed.entities/light/linear_attenuation) | Gets or sets the linear attenuation to calculate the total attenuation of the light |
| [quadratic_attenuation](/3d/python-net/aspose.threed.entities/light/quadratic_attenuation) | Gets or sets the quadratic attenuation to calculate the total attenuation of the light |
| [cast_shadows](/3d/python-net/aspose.threed.entities/light/cast_shadows) | Gets or sets if the light can cast shadows on other objects. |
| [shadow_color](/3d/python-net/aspose.threed.entities/light/shadow_color) | Gets or sets the shadow's color. |


### Methods
| Method | Description |
| :- | :- |
| [`remove_property(self, property)`](/3d/python-net/aspose.threed.entities/light/remove_property/#aspose.threed.property) | Removes a dynamic property. |
| [`remove_property(self, property)`](/3d/python-net/aspose.threed.entities/light/remove_property/#system.string) | Remove the specified property identified by name |
| [`get_property(self, property)`](/3d/python-net/aspose.threed.entities/light/get_property/#system.string) | Get the value of specified property |
| [`set_property(self, property, value)`](/3d/python-net/aspose.threed.entities/light/set_property/#system.string-system.object) | Sets the value of specified property |
| [`find_property(self, property_name)`](/3d/python-net/aspose.threed.entities/light/find_property/#system.string) | Finds the property.
<br/>It can be a dynamic property (Created by CreateDynamicProperty/SetProperty) 
<br/>or native property(Identified by its name) |
| [`get_bounding_box(self)`](/3d/python-net/aspose.threed.entities/light/get_bounding_box/#) | Gets the bounding box of current entity in its object space coordinate system. |
| [`get_entity_renderer_key(self)`](/3d/python-net/aspose.threed.entities/light/get_entity_renderer_key/#) | Gets the key of the entity renderer registered in the renderer |



### See Also
* module [`aspose.threed.entities`](..)
* class [`A3DObject`](/3d/python-net/aspose.threed/a3dobject)
* class [`Entity`](/3d/python-net/aspose.threed/entity)
* class [`Frustum`](/3d/python-net/aspose.threed.entities/frustum)
* class [`Light`](/3d/python-net/aspose.threed.entities/light)
* class [`SceneObject`](/3d/python-net/aspose.threed/sceneobject)