GLTFLight

Inherits: Resource < Reference < Object

Represents a GLTF light.

Description

Represents a light as defined by the KHR_lights_punctual GLTF extension.

Note: This class is only compiled in editor builds. Run-time glTF loading and saving is not available in exported projects. References to GLTFLight within a script will cause an error in an exported project.

Tutorials

Properties

Color

color

Color( 1, 1, 1, 1 )

float

inner_cone_angle

0.0

float

intensity

1.0

float

outer_cone_angle

0.785398

float

range

inf

String

type

""

Methods

Dictionary

to_dictionary ( ) const

Light

to_node ( ) const

Property Descriptions

Color color = Color( 1, 1, 1, 1 )

  • void set_color ( Color value )

  • Color get_color ( )

The Color of the light. Defaults to white. A black color causes the light to have no effect.

float inner_cone_angle = 0.0

  • void set_inner_cone_angle ( float value )

  • float get_inner_cone_angle ( )

The inner angle of the cone in a spotlight. Must be less than or equal to the outer cone angle.

Within this angle, the light is at full brightness. Between the inner and outer cone angles, there is a transition from full brightness to zero brightness. When creating a Redot SpotLight, the ratio between the inner and outer cone angles is used to calculate the attenuation of the light.

float intensity = 1.0

  • void set_intensity ( float value )

  • float get_intensity ( )

The intensity of the light. This is expressed in candelas (lumens per steradian) for point and spot lights, and lux (lumens per m²) for directional lights. When creating a Redot light, this value is converted to a unitless multiplier.

float outer_cone_angle = 0.785398

  • void set_outer_cone_angle ( float value )

  • float get_outer_cone_angle ( )

The outer angle of the cone in a spotlight. Must be greater than or equal to the inner angle.

At this angle, the light drops off to zero brightness. Between the inner and outer cone angles, there is a transition from full brightness to zero brightness. If this angle is a half turn, then the spotlight emits in all directions. When creating a Redot SpotLight, the outer cone angle is used as the angle of the spotlight.

float range = inf

  • void set_range ( float value )

  • float get_range ( )

The range of the light, beyond which the light has no effect. GLTF lights with no range defined behave like physical lights (which have infinite range). When creating a Redot light, the range is clamped to 4096.

String type = ""

The type of the light. The values accepted by Redot are "point", "spot", and "directional", which correspond to Redot's OmniLight, SpotLight, and DirectionalLight respectively.

Method Descriptions

Dictionary to_dictionary ( ) const

Serializes this GLTFLight instance into a Dictionary.

Light to_node ( ) const

Converts this GLTFLight instance into a Redot Light node.