Blend

Expression (pure) Math - Advanced 3 in 1 out 1 config ⬚ 1x1

Blends from Input A to Input B: Blend 0 outputs A, 1 outputs B, and 0.5 is halfway. Supports integers, decimals, vectors, rotators, quaternions, and colors. Clamp Alpha prevents extrapolation; rotations follow the shortest path.

Diagram

Ports drawn from the source data: inputs left, outputs right, config inside.

How it's used

Interpolate between two values by an alpha (0..1). The one gate behind smooth motion, fades, and easing.

Smoothly move a brick between two positions
Fade a color or light intensity
Ease any value toward a target

Smoothly open a door between two positions

// Blend alpha 0 -> closed, 1 -> open.
let pos = Blend(closedPos, openPos, alpha)
// Drive 'alpha' from a Timer or Tween for smooth motion.

Blend is the same math as lerp. Clamp Alpha (config) keeps alpha within 0..1 so overshoot can’t push past the endpoints.

Example grounded in the wirescript built-ins docs (documented behavior). Wirescript is the community language; in-game you wire the equivalent gates by hand, and names can differ from the UI label.

Technical details — ports, config & source

Wire inputs

Wires you feed into the gate.

Display name	Type	Tooltip
Blend	float	The alpha value for blending between Input A and Input B. 0 means only Input A, 1 means only Input B. Anything between is a mixture of the two - for example, 0.5 would give you a value half way between A and B.
Input A (InputA)	float	No tooltip in source
Input B (InputB)	float	No tooltip in source

Wire outputs

Wires the gate produces.

Display name	Type	Tooltip
Output	float	No tooltip in source

Configuration properties

Set on the gate itself in its properties panel — not wired. Distinct from inputs.

Display name	Type	Tooltip
Clamp Alpha (bClampAlpha)	bool	No tooltip in source

Source details

Brick asset: B_1x1_Gate_Expr_MathBlend
Component class: BrickComponentType_Expr_MathBlend
Kind: expr
Family: Math
Half size: 5 × 5 × 2

From logic_gate_inventory.simple.json @ 9660107, supplemented by gate_docs.json. Documented behavior, not independently tested.