three
Version:
JavaScript 3D library
134 lines (70 loc) • 3.53 kB
JavaScript
console.warn( "THREE.DeviceOrientationControls: As part of the transition to ES6 Modules, the files in 'examples/js' were deprecated in May 2020 (r117) and will be deleted in December 2020 (r124). You can find more information about developing using ES6 Modules in https://threejs.org/docs/#manual/en/introduction/Installation." );
/**
* W3C Device Orientation control (http://w3c.github.io/deviceorientation/spec-source-orientation.html)
*/
THREE.DeviceOrientationControls = function ( object ) {
var scope = this;
this.object = object;
this.object.rotation.reorder( 'YXZ' );
this.enabled = true;
this.deviceOrientation = {};
this.screenOrientation = 0;
this.alphaOffset = 0; // radians
var onDeviceOrientationChangeEvent = function ( event ) {
scope.deviceOrientation = event;
};
var onScreenOrientationChangeEvent = function () {
scope.screenOrientation = window.orientation || 0;
};
// The angles alpha, beta and gamma form a set of intrinsic Tait-Bryan angles of type Z-X'-Y''
var setObjectQuaternion = function () {
var zee = new THREE.Vector3( 0, 0, 1 );
var euler = new THREE.Euler();
var q0 = new THREE.Quaternion();
var q1 = new THREE.Quaternion( - Math.sqrt( 0.5 ), 0, 0, Math.sqrt( 0.5 ) ); // - PI/2 around the x-axis
return function ( quaternion, alpha, beta, gamma, orient ) {
euler.set( beta, alpha, - gamma, 'YXZ' ); // 'ZXY' for the device, but 'YXZ' for us
quaternion.setFromEuler( euler ); // orient the device
quaternion.multiply( q1 ); // camera looks out the back of the device, not the top
quaternion.multiply( q0.setFromAxisAngle( zee, - orient ) ); // adjust for screen orientation
};
}();
this.connect = function () {
onScreenOrientationChangeEvent(); // run once on load
// iOS 13+
if ( window.DeviceOrientationEvent !== undefined && typeof window.DeviceOrientationEvent.requestPermission === 'function' ) {
window.DeviceOrientationEvent.requestPermission().then( function ( response ) {
if ( response == 'granted' ) {
window.addEventListener( 'orientationchange', onScreenOrientationChangeEvent, false );
window.addEventListener( 'deviceorientation', onDeviceOrientationChangeEvent, false );
}
} ).catch( function ( error ) {
console.error( 'THREE.DeviceOrientationControls: Unable to use DeviceOrientation API:', error );
} );
} else {
window.addEventListener( 'orientationchange', onScreenOrientationChangeEvent, false );
window.addEventListener( 'deviceorientation', onDeviceOrientationChangeEvent, false );
}
scope.enabled = true;
};
this.disconnect = function () {
window.removeEventListener( 'orientationchange', onScreenOrientationChangeEvent, false );
window.removeEventListener( 'deviceorientation', onDeviceOrientationChangeEvent, false );
scope.enabled = false;
};
this.update = function () {
if ( scope.enabled === false ) return;
var device = scope.deviceOrientation;
if ( device ) {
var alpha = device.alpha ? THREE.MathUtils.degToRad( device.alpha ) + scope.alphaOffset : 0; // Z
var beta = device.beta ? THREE.MathUtils.degToRad( device.beta ) : 0; // X'
var gamma = device.gamma ? THREE.MathUtils.degToRad( device.gamma ) : 0; // Y''
var orient = scope.screenOrientation ? THREE.MathUtils.degToRad( scope.screenOrientation ) : 0; // O
setObjectQuaternion( scope.object.quaternion, alpha, beta, gamma, orient );
}
};
this.dispose = function () {
scope.disconnect();
};
this.connect();
};