Chapter 112: HemisphereLight

Core Idea

A light source positioned directly above the scene, with color fading from the sky color to the ground color.

This light cannot be used to cast shadows.

Key Concepts

• groundColor : Color: The light's ground color.
• isHemisphereLight : boolean (readonly): This flag can be used for type testing.

Code Examples

const light = new THREE.HemisphereLight( 0xffffbb, 0x080820, 1 );
scene.add( light );

• What it demonstrates: Typical usage of HemisphereLight.

Reference Tables

Constructor

Signature
`new HemisphereLight( skyColor : number

Properties

Property	Description
.groundColor : Color	The light's ground color.
.isHemisphereLight : boolean (readonly)	This flag can be used for type testing.

Key Takeaways

1. HemisphereLight extends: EventDispatcher → Object3D → Light
2. Most relevant properties: groundColor, isHemisphereLight.

Connects To

• EventDispatcher: parent class
• Object3D: parent class
• Light: parent class
• Source: src/lights/HemisphereLight.js