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fix motion events detection for iOS 13.4, which are broken #42

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fix motion events detection for iOS 13.4, which are broken #42

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4 changes: 2 additions & 2 deletions src/sensor-fusion/fusion-pose-sensor.js
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Original file line number Diff line number Diff line change
Expand Up @@ -41,10 +41,10 @@ function FusionPoseSensor(kFilter, predictionTime, yawOnly, isDebug) {
// https://github.com/immersive-web/cardboard-vr-display/issues/18
let chromeVersion = Util.getChromeVersion();
this.isDeviceMotionInRadians = !this.isIOS && chromeVersion && chromeVersion < 66;
// In Chrome m65 there's a regression of devicemotion events. Fallback
// In Chrome m65 and Safari 13.4 there's a regression of devicemotion events. Fallback
// to using deviceorientation for these specific builds. More information
// at `Util.isChromeWithoutDeviceMotion`.
this.isWithoutDeviceMotion = Util.isChromeWithoutDeviceMotion();
this.isWithoutDeviceMotion = Util.isChromeWithoutDeviceMotion() || Util.isSafariWithoutDeviceMotion();

this.filterToWorldQ = new MathUtil.Quaternion();

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11 changes: 11 additions & 0 deletions src/util.js
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Expand Up @@ -71,6 +71,17 @@ export const getChromeVersion = (function() {
};
})();

/**
* In Safari 13.4 for iOS `devicemotion` events are broken
*/
export const isSafariWithoutDeviceMotion = (function() {
let value = false;
value = isIOS() && isSafari() && navigator.userAgent.indexOf('13_4') !== -1;
return function () {
return value;
};
})();

/**
* In Chrome m65, `devicemotion` events are broken but subsequently fixed
* in 65.0.3325.148. Since many browsers use Chromium, ensure that
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