[Home](./index.md) > [server](./server.md) > [RigidBody](./server.rigidbody.md) > [setRotation](./server.rigidbody.setrotation.md) ## RigidBody.setRotation() method Sets the rotation of the rigid body. **Signature:** ```typescript setRotation(rotation: QuaternionLike): void; ``` ## Parameters

Parameter	Type	Description
rotation	[QuaternionLike](./server.quaternionlike.md)	The rotation of the rigid body. \*\*Category:\*\* Physics

**Returns:** void ## Remarks \*\*Coordinate system:\*\* Identity rotation (0,0,0,1 quaternion) means facing -Z. For Y-axis rotation only (yaw), use: `{ x: 0, y: sin(yaw/2), z: 0, w: cos(yaw/2) }`. A yaw of 0 faces -Z, positive yaw rotates counter-clockwise when viewed from above. This sets rotation immediately. For smooth rotation, use angular velocity (dynamic) or next kinematic rotation (kinematic).