Advanced Tool

Pointer Lock Mouse Test

An advanced diagnostic arena utilizing the Pointer Lock API to capture continuous, unconstrained relative coordinate deltas without screen edge collisions.

Updated: 2026-08-24• 4 min tool

Experimental / Advanced Utility: Click the arena below to request Pointer Lock. Press ESC at any time to release your cursor.

Cumulative Delta X

horizontal units

Cumulative Delta Y

vertical units

Status

Unlocked

click to lock

Packets

event triggers

Click Inside to Lock Pointer

Allows continuous movement without edge boundaries. Press ESC to unlock.

2. How the Pointer Lock API Works

Normal web applications track the cursor via absolute screen pixels (clientX, clientY). When your cursor reaches the edge of your screen, absolute position stops changing. Pointer Lock hides the cursor, locks it to a fixed position, and delivers pure infinite relative deltas (Δx, Δy).

3. Why 3D Games Require Pointer Lock

First-person shooters (CS2, Valorant, Apex) require infinite continuous 360-degree rotation. WebGL 3D games and web-based aim trainers use this exact API to ensure that moving your mouse 30 cm across your mousepad continuously rotates your 3D perspective without interruption.

FAQ

Pointer Lock FAQ

Common questions about Pointer Lock and relative mouse input.

What is Pointer Lock?

The Pointer Lock API locks your mouse cursor into an invisible fixed position and delivers continuous relative movementX/movementY coordinate deltas without ever bumping into the edges of your computer screen.

How do I exit Pointer Lock?

Press the Escape (ESC) key at any time on your keyboard to instantly release the cursor.