pointLight

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Position Field

Color Field

Attenuation Field

light

pointLight

RayTK

v0.41

Light that emits from a single point in space.

Parameters

Name	Description	Regular Handling	Read-Only Handling
Position	The point from which the light emits.	Runtime	Baked
Intensity	Brightness that is applied to the Color.	Runtime	Baked
Color	Color of the light.	Runtime	Baked
Attenuated	Whether to limit the light range.	Runtime	Semi-Baked
Attenuation Start	The distance at which the light starts to dim.	Runtime	Baked
Attenuation End	The distance at which the light is fully dimmed.	Runtime	Baked
Enable Shadow		Runtime	Semi-Baked

Inputs

• Position Field: (optional) Field controls the color of the light based on the position of surface hits where it is being applied. The resulting color is multiplied by the `Color` parameter and `Intensity`.
  • Coordinate Types: vec3
  • Context Types: LightContext
  • Return Types: vec4
• Color Field: (optional) Field/function that controls the slope and coloration of the attenuation rolloff is shaped. It can be used to make the light shift from one color to another, or to control the sharpness of the rolloff.
  • Coordinate Types: vec3
  • Context Types: LightContext
  • Return Types: float vec4
  • Supports Variables: lightdir
  • Supports Variables From Inputs: positionField
• Attenuation Field: (optional)
  • Coordinate Types: float
  • Context Types: LightContext
  • Return Types: float vec4
  • Supports Variables: lightdir
  • Supports Variables From Inputs: positionField colorField

Variables

• lightdir: