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Summary

Returns the rotation angle, in degrees, of the contact area ellipse defined by Touch.radiusX and Touch.radiusY. The value may be between 0 and 90. Together, these three values describe an ellipse that approximates the size and shape of the area of contact between the user and the screen. This may be a relatively large ellipse representing the contact between a fingertip and the screen or a small area representing the tip of a stylus, for example.

Note: This attribute has not been formally standardized. It is specified in the Touch Events – Level 2 Draft specification and not in Touch Events Recommendation. This attribute is not widely implemented.

Syntax

var angle = touchItem.rotationAngle;

Return value

angle
The number of degrees of rotation to apply to the described ellipse to align with the contact area between the user and the touch surface.

Example

The Touch.radiusX example includes an example of this property's usage.

Specifications

Specification Status Comment
Touch Events – Level 2 Draft Non-stable version.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
rotationAngle
Experimental
Chrome Full support 43Edge ? Firefox ? IE No support NoOpera Full support YesSafari No support NoWebView Android Full support 43Chrome Android Full support 43Edge Mobile ? Firefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support Yes

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

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