three.js/src/extras/core/Gyroscope.js

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.Gyroscope = function () {

	THREE.Object3D.call( this );

};

THREE.Gyroscope.prototype = Object.create( THREE.Object3D.prototype );

THREE.Gyroscope.prototype.updateMatrixWorld = function ( force ) {

	this.matrixAutoUpdate && this.updateMatrix();

	// update matrixWorld

	if ( this.matrixWorldNeedsUpdate || force ) {

		if ( this.parent ) {

			this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );

			this.matrixWorld.decompose( this.translationWorld, this.quaternionWorld, this.scaleWorld );
			this.matrix.decompose( this.translationObject, this.quaternionObject, this.scaleObject );

			this.matrixWorld.compose( this.translationWorld, this.quaternionObject, this.scaleWorld );


		} else {

			this.matrixWorld.copy( this.matrix );

		}


		this.matrixWorldNeedsUpdate = false;

		force = true;

	}

	// update children

	for ( var i = 0, l = this.children.length; i < l; i ++ ) {

		this.children[ i ].updateMatrixWorld( force );

	}

};

THREE.Gyroscope.prototype.translationWorld = new THREE.Vector3();
THREE.Gyroscope.prototype.translationObject = new THREE.Vector3();
THREE.Gyroscope.prototype.quaternionWorld = new THREE.Quaternion();
THREE.Gyroscope.prototype.quaternionObject = new THREE.Quaternion();
THREE.Gyroscope.prototype.scaleWorld = new THREE.Vector3();
THREE.Gyroscope.prototype.scaleObject = new THREE.Vector3();