@ue-too/board / index / Relay

Class: Relay

Defined in: packages/board/src/camera/camera-mux/relay.ts:48

Stateless camera input multiplexer that always allows inputs to pass through. This is the simplest CameraMux implementation with no filtering or state management.

Remarks

The Relay class provides a "transparent" mux that:

• Never blocks inputs
• Passes all inputs unchanged
• Has no internal state
• Acts as a simple conduit between input sources and camera control

Use this when you want:

• Direct, unfiltered camera control
• No animation system or input blocking
• Maximum simplicity with minimal overhead

For more advanced use cases (animations, input blocking, state management), implement a custom CameraMux or use a stateful implementation.

Example

const relay = new Relay();

// All inputs pass through unchanged
const panResult = relay.notifyPanInput({ x: 10, y: 5 });
// panResult = { allowPassThrough: true, delta: { x: 10, y: 5 } }

const zoomResult = relay.notifyZoomInput(0.5, { x: 100, y: 200 });
// zoomResult = { allowPassThrough: true, delta: 0.5, anchorPoint: { x: 100, y: 200 } }

const rotateResult = relay.notifyRotationInput(0.1);
// rotateResult = { allowPassThrough: true, delta: 0.1 }

See

• CameraMux for the interface specification
• createDefaultCameraMux for a factory function

Implements

• CameraMux

Constructors

Constructor

new Relay(): Relay

Defined in: packages/board/src/camera/camera-mux/relay.ts:52

Creates a new stateless relay multiplexer.

Returns

Relay

Methods

notifyPanInput()

notifyPanInput(diff): CameraMuxPanOutput

Defined in: packages/board/src/camera/camera-mux/relay.ts:60

Processes pan input by always allowing it through unchanged.

Parameters

diff

Point

Pan displacement in viewport space

Returns

CameraMuxPanOutput

Output allowing passthrough with the original delta

Implementation of

CameraMux.notifyPanInput

---

notifyRotationInput()

notifyRotationInput(deltaRotation): CameraMuxRotationOutput

Defined in: packages/board/src/camera/camera-mux/relay.ts:88

Processes rotation input by always allowing it through unchanged.

Parameters

deltaRotation

number

Change in rotation in radians

Returns

CameraMuxRotationOutput

Output allowing passthrough with the original delta

Implementation of

CameraMux.notifyRotationInput

---

notifyZoomInput()

notifyZoomInput(deltaZoomAmount, anchorPoint): CameraMuxZoomOutput

Defined in: packages/board/src/camera/camera-mux/relay.ts:71

Processes zoom input by always allowing it through unchanged.

Parameters

deltaZoomAmount

number

Change in zoom level

anchorPoint

Point

Point to zoom towards in viewport coordinates

Returns

CameraMuxZoomOutput

Output allowing passthrough with the original parameters

Implementation of

CameraMux.notifyZoomInput