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alteredqalteredq
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Added Gyroscope object.
It's Object3D subclass that takes a position from the scene graph hierarchy but uses its local rotation as world rotation. It works like real-world gyroscope - you can move it around using hierarchy while its orientation stays fixed with respect to the world.
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‎build/Three.js

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‎build/custom/ThreeExtras.js

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‎src/extras/core/Gyroscope.js

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/**
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* @author alteredq / http://alteredqualia.com/
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*/
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THREE.Gyroscope = function () {
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THREE.Object3D.call( this );
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};
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THREE.Gyroscope.prototype = new THREE.Object3D();
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THREE.Gyroscope.prototype.constructor = THREE.Gyroscope;
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THREE.Gyroscope.prototype.updateMatrixWorld = function ( force ) {
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this.matrixAutoUpdate && this.updateMatrix();
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// update matrixWorld
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if ( this.matrixWorldNeedsUpdate || force ) {
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if ( this.parent ) {
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this.matrixWorld.multiply( this.parent.matrixWorld, this.matrix );
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this.matrixWorld.decompose( this.translationWorld, this.rotationWorld, this.scaleWorld );
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this.matrix.decompose( this.translationObject, this.rotationObject, this.scaleObject );
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this.matrixWorld.compose( this.translationWorld, this.rotationObject, this.scaleWorld );
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} else {
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this.matrixWorld.copy( this.matrix );
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}
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this.matrixWorldNeedsUpdate = false;
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force = true;
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}
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// update children
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for ( var i = 0, l = this.children.length; i < l; i ++ ) {
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this.children[ i ].updateMatrixWorld( force );
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}
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};
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THREE.Gyroscope.prototype.translationWorld = new THREE.Vector3();
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THREE.Gyroscope.prototype.translationObject = new THREE.Vector3();
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THREE.Gyroscope.prototype.rotationWorld = new THREE.Quaternion();
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THREE.Gyroscope.prototype.rotationObject = new THREE.Quaternion();
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THREE.Gyroscope.prototype.scaleWorld = new THREE.Vector3();
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THREE.Gyroscope.prototype.scaleObject = new THREE.Vector3();
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‎utils/build.py

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'extras/core/BufferGeometry.js',
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'extras/core/Curve.js',
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'extras/core/CurvePath.js',
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'extras/core/Gyroscope.js',
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'extras/core/Path.js',
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'extras/core/Shape.js',
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'extras/core/TextPath.js',

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