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DaydreamController.js
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DaydreamController.js
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/**
* @author mrdoob / http://mrdoob.com/
*/
function DaydreamController() {
var state = {};
function connect() {
return navigator.bluetooth.requestDevice( {
filters: [ {
name: 'Daydream controller'
} ],
optionalServices: [ 0xfe55 ]
} )
.then( function ( device ) {
return device.gatt.connect();
} )
.then( function ( server ) {
return server.getPrimaryService( 0xfe55 );
} )
.then( function ( service ) {
return service.getCharacteristic( '00000001-1000-1000-8000-00805f9b34fb' );
} )
.then( function ( characteristic ) {
characteristic.addEventListener( 'characteristicvaluechanged', handleData );
return characteristic.startNotifications();
} )
}
function handleData( event ) {
var data = event.target.value;
// http://stackoverflow.com/questions/40730809/use-daydream-controller-on-hololens-or-outside-daydream/40753551#40753551
state.isClickDown = (data.getUint8(18) & 0x1) > 0;
state.isAppDown = (data.getUint8(18) & 0x4) > 0;
state.isHomeDown = (data.getUint8(18) & 0x2) > 0;
state.isVolPlusDown = (data.getUint8(18) & 0x10) > 0;
state.isVolMinusDown = (data.getUint8(18) & 0x8) > 0;
state.time = ((data.getUint8(0) & 0xFF) << 1 | (data.getUint8(1) & 0x80) >> 7);
state.seq = (data.getUint8(1) & 0x7C) >> 2;
state.xOri = (data.getUint8(1) & 0x03) << 11 | (data.getUint8(2) & 0xFF) << 3 | (data.getUint8(3) & 0x80) >> 5;
state.xOri = (state.xOri << 19) >> 19;
state.xOri *= (2 * Math.PI / 4095.0);
state.yOri = (data.getUint8(3) & 0x1F) << 8 | (data.getUint8(4) & 0xFF);
state.yOri = (state.yOri << 19) >> 19;
state.yOri *= (2 * Math.PI / 4095.0);
state.zOri = (data.getUint8(5) & 0xFF) << 5 | (data.getUint8(6) & 0xF8) >> 3;
state.zOri = (state.zOri << 19) >> 19;
state.zOri *= (2 * Math.PI / 4095.0);
state.xAcc = (data.getUint8(6) & 0x07) << 10 | (data.getUint8(7) & 0xFF) << 2 | (data.getUint8(8) & 0xC0) >> 6;
state.xAcc = (state.xAcc << 19) >> 19;
state.xAcc *= (8 * 9.8 / 4095.0);
state.yAcc = (data.getUint8(8) & 0x3F) << 7 | (data.getUint8(9) & 0xFE) >>> 1;
state.yAcc = (state.yAcc << 19) >> 19;
state.yAcc *= (8 * 9.8 / 4095.0);
state.zAcc = (data.getUint8(9) & 0x01) << 12 | (data.getUint8(10) & 0xFF) << 4 | (data.getUint8(11) & 0xF0) >> 4;
state.zAcc = (state.zAcc << 19) >> 19;
state.zAcc *= (8 * 9.8 / 4095.0);
state.xGyro = ((data.getUint8(11) & 0x0F) << 9 | (data.getUint8(12) & 0xFF) << 1 | (data.getUint8(13) & 0x80) >> 7);
state.xGyro = (state.xGyro << 19) >> 19;
state.xGyro *= (2048 / 180 * Math.PI / 4095.0);
state.yGyro = ((data.getUint8(13) & 0x7F) << 6 | (data.getUint8(14) & 0xFC) >> 2);
state.yGyro = (state.yGyro << 19) >> 19;
state.yGyro *= (2048 / 180 * Math.PI / 4095.0);
state.zGyro = ((data.getUint8(14) & 0x03) << 11 | (data.getUint8(15) & 0xFF) << 3 | (data.getUint8(16) & 0xE0) >> 5);
state.zGyro = (state.zGyro << 19) >> 19;
state.zGyro *= (2048 / 180 * Math.PI / 4095.0);
state.xTouch = ((data.getUint8(16) & 0x1F) << 3 | (data.getUint8(17) & 0xE0) >> 5) / 255.0;
state.yTouch = ((data.getUint8(17) & 0x1F) << 3 | (data.getUint8(18) & 0xE0) >> 5) / 255.0;
onStateChangeCallback( state );
}
function onStateChangeCallback() {}
//
return {
connect: connect,
onStateChange: function ( callback ) {
onStateChangeCallback = callback;
}
}
}