---
description: >-
  A physical light object relative to a bounding box. Used with the Place Lights
  block.
---

# Light Object (Bbox)

<figure><img src="https://1909422608-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F4GudP3s7lhKkLuTADYnf%2Fuploads%2FHPxpx9ppniXdExPJEC0c%2Fimage.png?alt=media&#x26;token=bc6f5b79-793f-40cc-ae8b-eaa9b3499129" alt=""><figcaption></figcaption></figure>

**Light Type:** _Light object type. "Point", "Area", or "Spot"._

**Bbox Face:** _Bounding box face to reference. "Auto" will select the bounding box face closest to the camera._

**Coordinates (UVW):** _Coordinates of the light object relative to the bounding box. "U" references the horizontal axis of the bounding box, "V" references the vertical axis, and "W" is normal to the bounding box face. The point \[0, 0, 0] corresponds to the bottom-left corner of the bounding box. Values along the W axis are normalized to the depth of the bounding box. For example, a value of 0 would make the light coincident with the bounding box face and a value of 1 would offset the light along the W axis (normal) by a distance equal to the bounding box depth._\
\
&#xNAN;**\[0, 0, 0]:** Bottom-left corner of the face, coplanar with the face.\
&#xNAN;**\[1, 1, 0]:** Top-right corner of the face, coplanar with the face.\
&#xNAN;**\[0.5, 0.5, 1]:** Center of the face, offset by 1x the depth of the bounding box.\
\
**Size:** _"Size" of the light object. For Point and Spot lights, this is the radius of the light. For an Area light, this is the width/height of the light._

**Power:** _Radiant power of the light in watts._\
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**Color Temp:** _Color temperature of the light in degrees Kelvin (more information on blackbody radiation may be found_ [_here_](https://en.wikipedia.org/wiki/Black-body_radiation)_)._

**Chance:** _Chance for this light to be created._
