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 Editor's Draft specification and not in Touch Events Recommendation. This attribute is not widely implemented.
var angle = touchItem.rotationAngle;
angle
The Touch.radiusX example includes an example of this property's usage.
Specification | Status | Comment |
---|---|---|
Touch Events – Level 2 | Editor's Draft | Non-stable version. |
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | 39.0 -webkit 43.0 | ? | ? | ? | ? |
Feature | Android | Android Webview | Chrome for Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|
Basic support | No support | 39.0 -webkit 43.0 | 39.0 -webkit 43.0 | ? | ? | ? | ? | ? |
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https://developer.mozilla.org/en-US/docs/Web/API/Touch/rotationAngle