For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt, and this page is available as Markdown at /math/variables/VECTOR3_UP.md.

    Variable: VECTOR3_UP

    const VECTOR3_UP: Vector3

    up

    A unit vector representing the world UP direction (0,1,0)

    表示世界上方方向的单位向量 (0,1,0)。

    源码