Mouse Movement Test
Observe live pointer displacement, compare horizontal vs vertical axis traversal, and analyze vector path efficiency in your browser.
What does the Mouse Movement Test measure?
This tool measures browser-observed pointer coordinate displacements (movementX and movementY), total cumulative vector path length, velocity, and directional changes. It provides empirical observation of how your optical sensor interacts with browser window coordinates.
Move your mouse continuously across this surface
Observing instantaneous vector displacements and directional shifts
Browser-Observed Movement vs. Raw Sensor Counts
When you move your mouse, the optical sensor reports raw displacement deltas. However, by the time these signals reach the browser's JavaScript event loop, operating system display scaling, monitor refresh rates, and pointer acceleration curves can reshape the observed numbers.
This test enables you to isolate horizontal and vertical movements independently to verify axis symmetry and detect unintended sensor skew or mousepad texture resistance.
- Total vector path length measures the Euclidean hypotenuse of all consecutive displacement vectors.
- Comparing horizontal ΔX and vertical ΔY helps verify that your mouse sensor tracks symmetrically across both axes.
- Direction changes track how often your movement vector inverts sign, reflecting micro-corrections and tracking jitter.