PointerEvent.tangentialPressure

The tangentialPressure read-only property of the PointerEvent interface represents the normalized tangential pressure of the pointer input (also known as barrel pressure or cylinder stress) in the range -1 to 1, where 0 is the neutral position of the control.

Note that some hardware may only support positive values in the range 0 to 1. For hardware that does not support tangential pressure, the value will be 0.

Syntax

var tanPressure = pointerEvent.tangentialPressure;

Value

A float representing the amount of tangential pressure applied to the pointer.

Example

When a pointerdown event is fired, different functions are called depending on the value of the event's tangentialPressure property.

someElement.addEventListener('pointerdown', function(ev) {
   if (ev.tangentialPressure == 0) {
     // No pressure
     process_no_tanPressure(ev);
   } else if (ev.tangentialPressure == 1) {
     // Maximum pressure
     process_max_tanPressure(ev);
   } else {
     // Default
     process_tanPressure(ev);
   }
 }, false);

Specifications

Specification Status Comment
Pointer Events – Level 2
The definition of 'tangentialPressure' in that specification.
Editor's Draft  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic Support58 No

No

541

No45 No
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support5858 No

No

541

No45 No

1. From version 54: this feature is behind the dom.w3c_pointer_events.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.

See also

Document Tags and Contributors

 Contributors to this page: lpd-au, jpmedley, chrisdavidmills
 Last updated by: lpd-au,