blob: dd1d9a73cb4034403ea67154365533a6e655769c [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/gestures.dart';
import '../common.dart';
import 'data/velocity_tracker_data.dart';
const int _kNumIters = 10000;
void main() {
final VelocityTracker tracker = VelocityTracker();
final Stopwatch watch = Stopwatch();
print('Velocity tracker benchmark...');
watch.start();
for (int i = 0; i < _kNumIters; i += 1) {
for (PointerEvent event in velocityEventData) {
if (event is PointerDownEvent || event is PointerMoveEvent)
tracker.addPosition(event.timeStamp, event.position);
if (event is PointerUpEvent)
tracker.getVelocity();
}
}
watch.stop();
final BenchmarkResultPrinter printer = BenchmarkResultPrinter();
printer.addResult(
description: 'Velocity tracker',
value: watch.elapsedMicroseconds / _kNumIters,
unit: 'µs per iteration',
name: 'velocity_tracker_iteration',
);
printer.printToStdout();
}