Websites/browserbench.org/JetStream1.1/cdjs/simulator.js

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// Copyright (C) 2015 Apple Inc. All rights reserved.
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function Simulator(numAircraft) {
    this._aircraft = [];
    for (var i = 0; i < numAircraft; ++i)
        this._aircraft.push(new CallSign("foo" + i));
}

Simulator.prototype.simulate = function(time) {
    var frame = [];
    for (var i = 0; i < this._aircraft.length; i += 2) {
        frame.push({
            callsign: this._aircraft[i],
            position: new Vector3D(time, Math.cos(time) * 2 + i * 3, 10)
        });
        frame.push({
            callsign: this._aircraft[i + 1],
            position: new Vector3D(time, Math.sin(time) * 2 + i * 3, 10)
        });
    }
    return frame;
};