563 lines
26 KiB
C#
563 lines
26 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Globalization;
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using System.Threading;
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using System.Threading.Tasks;
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using ClumsyCore;
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using ClumsyCore.DTools;
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using ClumsyCore.Interfaces;
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using ClumsyCore.Pilot;
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using CommonUsage.Chassis;
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using FundamentalLib;
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using MDCSToolBox.Clumsy.Pilot;
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using MultiWheelC.TrajectoryPlanning.CoarsePath;
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using MultiWheelC.TrajectoryPlanning.CoarsePath.Facade;
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using MultiWheelC.TrajectoryPlanning.EMPlanner;
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using MultiWheelC.TrajectoryPlanning.TrajectoryObservation;
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using TrajectoryPlanningVisualization;
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namespace MultiWheelC;
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[MovementTest(name = "EM轨迹规划观察闭环测试")]
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public sealed class TrajectoryObservationMovementTest : MovementTest
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{
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private const int MaximumManualObstacleCount = 20;
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private static long nextObstacleSnapshotVersion;
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public double GoalXmm = double.NaN;
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public double GoalYmm = double.NaN;
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public double GoalYawDeg = 0d;
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public double MapPaddingMeters = 2d;
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public float MapResolutionMm = 50f;
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public double ReplanPeriodSeconds = 0.20d;
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public double ObserverPeriodSeconds = 0.05d;
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public double SolverTimeoutSeconds = 5.0d;
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public int MaximumOsqpIterations = 100000;
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/// <summary>单次 ST 轨迹覆盖的未来时长，单位 s；默认 2s，不等于观察循环周期。</summary>
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public double TimeHorizonSeconds = 2d;
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/// <summary>Trajectory 相邻 TimeFromStart 时间戳的间隔，单位 s；默认 0.10s，不等于观察循环周期。</summary>
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public double OutputTimeStepSeconds = 0.10d;
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public double VehicleLengthMeters = 0.80d;
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public double VehicleWidthMeters = 0.60d;
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public double SafetyMarginMeters = 0.05d;
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public double MaximumCurvaturePerMeter = 1d / 1.20d;
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public bool EnableWebVisualization = false;
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public bool AutoOpenWebVisualization = true;
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public int WebVisualizationPort = 0;
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public double WebRefreshRateHz = 10d;
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public int VisualizationHistoryCycleLimit = 60;
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public bool EnableNativePainterVisualization = false;
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public double DirectionConfirmationSpeedMetersPerSecond = 0.02d;
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public int DirectionConfirmationSamples = 3;
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public double GearSwitchProjectionToleranceMeters = 0.50d;
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public double GearSwitchStopHoldSeconds = 0.20d;
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public override void Test()
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{
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try
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{
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double goalXMillimeters = GoalXmm;
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double goalYMillimeters = GoalYmm;
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double goalYawDegrees = GoalYawDeg;
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if (!IsFinite(goalXMillimeters) || !IsFinite(goalYMillimeters))
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{
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goalXMillimeters = ReadFiniteInput("EM观察终点 X（世界 mm）");
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goalYMillimeters = ReadFiniteInput("EM观察终点 Y（世界 mm）");
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goalYawDegrees = ReadFiniteInput("EM观察终点航向（世界 deg）");
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}
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EnsureFinite(goalXMillimeters, nameof(GoalXmm));
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EnsureFinite(goalYMillimeters, nameof(GoalYmm));
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EnsureFinite(goalYawDegrees, nameof(GoalYawDeg));
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var settings = new TrajectoryObservationSettings
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{
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MapPaddingMeters = MapPaddingMeters,
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MapResolutionMillimeters = MapResolutionMm,
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ReplanPeriodSeconds = ReplanPeriodSeconds,
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ObserverPeriodSeconds = ObserverPeriodSeconds,
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SolverTimeoutSeconds = SolverTimeoutSeconds,
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MaximumOsqpIterations = MaximumOsqpIterations,
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TimeHorizonSeconds = TimeHorizonSeconds,
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OutputTimeStepSeconds = OutputTimeStepSeconds,
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VehicleLengthMeters = VehicleLengthMeters,
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VehicleWidthMeters = VehicleWidthMeters,
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SafetyMarginMeters = SafetyMarginMeters,
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MaximumCurvaturePerMeter = MaximumCurvaturePerMeter,
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EnableWebVisualization = EnableWebVisualization,
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AutoOpenWebVisualization = AutoOpenWebVisualization,
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WebVisualizationPort = WebVisualizationPort,
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WebRefreshRateHz = WebRefreshRateHz,
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VisualizationHistoryCycleLimit = VisualizationHistoryCycleLimit,
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EnableNativePainterVisualization = EnableNativePainterVisualization,
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DirectionConfirmationSpeedMetersPerSecond = DirectionConfirmationSpeedMetersPerSecond,
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DirectionConfirmationSamples = DirectionConfirmationSamples,
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GearSwitchProjectionToleranceMeters = GearSwitchProjectionToleranceMeters,
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GearSwitchStopHoldSeconds = GearSwitchStopHoldSeconds,
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};
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settings = settings.CreateValidatedSnapshot();
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TimeSpan observerPeriod = TimeSpan.FromSeconds(settings.ObserverPeriodSeconds);
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IReadOnlyList<TrajectoryObservationObstacle> obstacles = ReadManualObstacles();
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long obstacleSnapshotVersion = obstacles.Count == 0
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? 0L
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: Interlocked.Increment(ref nextObstacleSnapshotVersion);
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var goal = new Pose2D(goalXMillimeters / 1000d, goalYMillimeters / 1000d,
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goalYawDegrees * Math.PI / 180d);
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TrajectoryObservationMovementTestRunner.Start(
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goal, settings, observerPeriod, obstacles, obstacleSnapshotVersion);
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}
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catch (Exception exception)
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{
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TrajectoryObservationMovementTestRunner.ShowInputFailure(exception);
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}
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}
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public override void TestStop()
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{
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TrajectoryObservationMovementTestRunner.Stop();
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}
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private static IReadOnlyList<TrajectoryObservationObstacle> ReadManualObstacles()
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{
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int count = ReadBoundedIntegerInput("EM观察手动障碍物数量（0-20）", 0, MaximumManualObstacleCount);
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var obstacles = new List<TrajectoryObservationObstacle>(count);
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for (int index = 0; index < count; index++)
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{
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string label = "障碍物 " + (index + 1).ToString(CultureInfo.InvariantCulture);
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int kind = ReadBoundedIntegerInput(label + " 类型（1=圆形，2=轴对齐矩形）", 1, 2);
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double centerXMillimeters = ReadFiniteInput(label + " 中心 X（世界 mm）");
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double centerYMillimeters = ReadFiniteInput(label + " 中心 Y（世界 mm）");
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if (kind == 1)
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{
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double radiusMillimeters = ReadPositiveFiniteInput(label + " 半径（mm）");
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obstacles.Add(TrajectoryObservationObstacle.Circle(
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centerXMillimeters, centerYMillimeters, radiusMillimeters));
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}
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else
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{
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double lengthXMillimeters = ReadPositiveFiniteInput(label + " X 方向长度（mm）");
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double widthYMillimeters = ReadPositiveFiniteInput(label + " Y 方向宽度（mm）");
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obstacles.Add(TrajectoryObservationObstacle.Rectangle(
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centerXMillimeters - lengthXMillimeters / 2d,
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centerXMillimeters + lengthXMillimeters / 2d,
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centerYMillimeters - widthYMillimeters / 2d,
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centerYMillimeters + widthYMillimeters / 2d));
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}
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}
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return obstacles;
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}
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private static int ReadBoundedIntegerInput(string prompt, int minimum, int maximum)
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{
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object raw = UI.GetInput(prompt);
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string text = Convert.ToString(raw, CultureInfo.CurrentCulture);
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int value;
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if (!int.TryParse(text, NumberStyles.Integer, CultureInfo.CurrentCulture, out value) &&
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!int.TryParse(text, NumberStyles.Integer, CultureInfo.InvariantCulture, out value))
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throw new ArgumentException("输入必须是整数：" + prompt);
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if (value < minimum || value > maximum)
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throw new ArgumentOutOfRangeException(nameof(prompt), "输入超出允许范围：" + prompt);
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return value;
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}
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private static double ReadPositiveFiniteInput(string prompt)
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{
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double value = ReadFiniteInput(prompt);
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if (value <= 0d)
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throw new ArgumentOutOfRangeException(nameof(prompt), "输入必须是正数：" + prompt);
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return value;
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}
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private static double ReadFiniteInput(string prompt)
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{
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object raw = UI.GetInput(prompt);
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string text = Convert.ToString(raw, CultureInfo.CurrentCulture);
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double value;
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if (!double.TryParse(text, NumberStyles.Float, CultureInfo.CurrentCulture, out value) &&
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!double.TryParse(text, NumberStyles.Float, CultureInfo.InvariantCulture, out value))
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throw new ArgumentException("输入必须是有限数字：" + prompt);
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EnsureFinite(value, prompt);
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return value;
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}
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private static void EnsureFinite(double value, string name)
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{
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if (!IsFinite(value)) throw new ArgumentException("输入必须是有限数字：" + name);
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}
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private static bool IsFinite(double value)
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{
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return !double.IsNaN(value) && !double.IsInfinity(value);
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}
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}
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internal static class TrajectoryObservationMovementTestRunner
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{
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private const string StatusChannel = "TrajectoryObserver";
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private const string ObserveOnlyNotice = "OBSERVE_ONLY: no chassis command is sent.";
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private static readonly object SessionSync = new object();
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private static CancellationTokenSource activeCancellation;
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private static Task activeTask;
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private static TrajectoryObservationVisualizationPublisher activeWebPublisher;
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private static TrajectoryObservationPresentation activePresentation;
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private static long nextSessionId;
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private static long activeSessionId;
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private static long stateSequence;
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internal static void Start(Pose2D goal, TrajectoryObservationSettings settings, TimeSpan observerPeriod,
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IReadOnlyList<TrajectoryObservationObstacle> obstacles, long obstacleSnapshotVersion)
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{
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if (goal == null) throw new ArgumentNullException(nameof(goal));
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if (settings == null) throw new ArgumentNullException(nameof(settings));
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if (obstacles == null) throw new ArgumentNullException(nameof(obstacles));
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var cancellation = new CancellationTokenSource();
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CancellationTokenSource previousCancellation;
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long sessionId;
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lock (SessionSync)
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{
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previousCancellation = activeCancellation;
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activeCancellation = cancellation;
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activeTask = null;
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sessionId = ++nextSessionId;
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activeSessionId = sessionId;
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StopActiveVisualizationNoLock();
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activePresentation = settings.EnableNativePainterVisualization ? new TrajectoryObservationPresentation() : null;
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PrintStatus("Starting frozen observation session " +
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sessionId.ToString(CultureInfo.InvariantCulture) + ".");
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}
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CancelWithoutWaiting(previousCancellation);
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Task task = Task.Run(() => RunSessionAsync(sessionId, goal, settings, observerPeriod,
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obstacles, obstacleSnapshotVersion, cancellation.Token), cancellation.Token);
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lock (SessionSync)
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{
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if (activeSessionId == sessionId) activeTask = task;
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}
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_ = task.ContinueWith(completed => Finish(sessionId, cancellation, completed), TaskScheduler.Default);
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}
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internal static void Stop()
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{
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CancellationTokenSource cancellation;
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lock (SessionSync)
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{
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cancellation = activeCancellation;
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activeCancellation = null;
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activeTask = null;
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activeSessionId = 0L;
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StopActiveVisualizationNoLock();
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PrintStatus("Observation stop requested; all observer layers were cleared.");
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}
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CancelWithoutWaiting(cancellation);
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}
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internal static void ShowInputFailure(Exception exception)
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{
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string message = exception == null ? "Unknown input error." : exception.Message;
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PrintStatus("Observation session did not start: " + message);
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}
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private static async Task RunSessionAsync(long sessionId, Pose2D goal,
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TrajectoryObservationSettings settings, TimeSpan observerPeriod,
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IReadOnlyList<TrajectoryObservationObstacle> obstacles, long obstacleSnapshotVersion,
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CancellationToken token)
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{
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token.ThrowIfCancellationRequested();
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VehicleMotionState initialState = ReadVehicleState();
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CoarsePathPlanningJob job = TrajectoryObservationSetupFactory.CreateBootstrapJob(
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initialState.Pose, goal, settings, obstacles, obstacleSnapshotVersion);
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var bootstrapTimer = Stopwatch.StartNew();
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TrajectoryObservationBootstrapResult bootstrap = new TrajectoryObservationBootstrapper()
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.Bootstrap(job, token);
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bootstrapTimer.Stop();
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if (!bootstrap.Succeeded)
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{
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DrawIfCurrent(sessionId, bootstrap, null, null, null,
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new TrajectoryObservationDiagnostic("bootstrap failed: " + bootstrap.FailureReason));
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LogIfCurrent(sessionId, "Planning bootstrap failed after " +
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bootstrapTimer.Elapsed.TotalMilliseconds.ToString("F0", CultureInfo.InvariantCulture) +
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" ms: " + bootstrap.FailureReason);
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return;
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}
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LogIfCurrent(sessionId, CreateBootstrapStatus(sessionId, bootstrap, settings, obstacles.Count,
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bootstrapTimer.Elapsed));
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var controller = new TrajectoryObservationController(bootstrap, settings,
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new EmPlanningService(new OsqpNativeSolver()),
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"trajectory-observer-" + sessionId.ToString(CultureInfo.InvariantCulture));
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LogIfCurrent(sessionId, controller.CreateConfigurationDiagnostic().Text);
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var observationLoop = new TrajectoryObservationLoop(controller);
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TrajectoryObservationVisualizationPublisher webPublisher = StartWebVisualizationIfEnabled(
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sessionId, bootstrap, controller, settings, obstacleSnapshotVersion);
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var dynamicSnapshotBuilder = new TrajectoryObservationDynamicSnapshotBuilder();
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long visualizationSequence = 0L;
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bool gearSwitchWaitingPrinted = false;
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while (true)
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{
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await Task.Delay(observerPeriod, token).ConfigureAwait(false);
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VehicleMotionState state = ReadVehicleState();
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DateTimeOffset now = state.CapturedAtUtc;
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TrajectoryObservationLoopTick tick = observationLoop.Tick(now, state, token);
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TrajectoryObservationObservation observation = tick.Observation;
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TrajectoryObservationDiagnostic diagnostic = TrajectoryObservationDiagnostics.Create(
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tick.LatestCycle, tick.LatestPlanningElapsed, tick.PlanningInFlight,
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observation.PublishedTrajectory);
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DirectionSegmentView segment = controller.ActiveSegment;
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TrajectoryObservationCharts charts = observation.PublishedTrajectory == null
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? null
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: TrajectoryObservationCharts.Build(observation.PublishedTrajectory, segment,
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settings.MapPaddingMeters);
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TrajectoryObservationRuntimeState runtimeState = TrajectoryObservationRuntimeState.Create(
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now, observation.PublishedTrajectory);
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DrawIfCurrent(sessionId, bootstrap, observation, charts, runtimeState, diagnostic);
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webPublisher?.TryPublish(now, () => dynamicSnapshotBuilder.Build(
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Interlocked.Increment(ref visualizationSequence), tick, controller.ActiveSegment,
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controller.PreviousTrajectoryForVisualization, controller.CreateEffectiveConfigurationSnapshot()));
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if (runtimeState.WaitingAtGearSwitch && !gearSwitchWaitingPrinted)
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{
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LogIfCurrent(sessionId, runtimeState.WorldNotice);
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gearSwitchWaitingPrinted = true;
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}
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if (tick.PlanningStarted)
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LogIfCurrent(sessionId, "planning status=pending");
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if (tick.PlanningCompleted)
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LogIfCurrent(sessionId, diagnostic.Text);
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}
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}
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private static VehicleMotionState ReadVehicleState()
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{
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var location = DetourInterface.getCartLocation();
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if (location == null) throw new InvalidOperationException("Live localization is unavailable.");
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if (BasicPilotBase.Chassis == null) throw new InvalidOperationException("Live chassis read interface is unavailable.");
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var speed = BasicPilotBase.Chassis.GetCarSpeed(true);
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return new VehicleMotionState(
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new Pose2D(location.x / 1000d, location.y / 1000d, location.th * Math.PI / 180d),
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speed.Vx, null, DateTimeOffset.UtcNow, Interlocked.Increment(ref stateSequence));
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}
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private static string CreateBootstrapStatus(long sessionId, TrajectoryObservationBootstrapResult bootstrap,
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TrajectoryObservationSettings settings, int obstacleCount, TimeSpan elapsed)
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{
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float widthMillimeters = bootstrap.Map.Bounds.XMax - bootstrap.Map.Bounds.XMin;
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float heightMillimeters = bootstrap.Map.Bounds.YMax - bootstrap.Map.Bounds.YMin;
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return "Session " + sessionId.ToString(CultureInfo.InvariantCulture) + " bootstrap succeeded in " +
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elapsed.TotalMilliseconds.ToString("F0", CultureInfo.InvariantCulture) + " ms.\n" +
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"start=(" + Format(bootstrap.Job.Start.X) + ", " + Format(bootstrap.Job.Start.Y) + ", " +
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Format(bootstrap.Job.Start.Heading) + ") m/rad; goal=(" + Format(bootstrap.Job.Goal.X) + ", " +
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Format(bootstrap.Job.Goal.Y) + ", " + Format(bootstrap.Job.Goal.Heading) + ") m/rad.\n" +
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"map=" + Format(widthMillimeters) + " x " + Format(heightMillimeters) + " mm, resolution=" +
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Format(settings.MapResolutionMillimeters) + " mm, padding=" + Format(settings.MapPaddingMeters) +
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" m, obstacles=" + obstacleCount.ToString(CultureInfo.InvariantCulture) + ".\n" +
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"replan=" + Format(settings.ReplanPeriodSeconds) + " s, observer=" +
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Format(settings.ObserverPeriodSeconds) + " s, segment index=0.";
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}
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private static string CreateTickStatus(long sessionId, TrajectoryObservationObservation observation,
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TrajectoryObservationCharts charts, PlanningCycleResult latestCycle, TimeSpan latestPlanningElapsed,
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bool waitingAtGearSwitch)
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{
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string planning = latestCycle == null
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? "not started"
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: latestCycle.Result.Status + ", published=" + latestCycle.Published +
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", version=" + latestCycle.Version.ToString(CultureInfo.InvariantCulture);
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string selected = observation.SelectedPoint == null
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? "selected trajectory point unavailable"
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: "selected t=" + Format(observation.SelectedPoint.TimeFromStart) +
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" s, path-S=" + Format(observation.SelectedPoint.PathS) + " m";
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string loggedCommand = observation.Command == null
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? "logged command unavailable"
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: "logged command only: signed speed=" + Format(observation.Command.SignedLongitudinalVelocity) +
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" m/s, yaw rate=" + Format(observation.Command.YawRate) + " rad/s, direction=" +
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observation.Command.Direction + ", request direction change=" +
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observation.Command.RequestDirectionChange;
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string terminal = observation.PublishedTrajectory == null
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? "trajectory unavailable"
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: "trajectory=" + observation.PublishedTrajectory.Metadata.TrajectoryId + ", terminal=" +
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observation.PublishedTrajectory.Metadata.TerminalType + ", segment index=" +
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observation.PublishedTrajectory.Metadata.SegmentIndex.ToString(CultureInfo.InvariantCulture);
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string projectionFailures = charts == null
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? "unavailable"
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: charts.FailedProjectionCount.ToString(CultureInfo.InvariantCulture);
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string waiting = waitingAtGearSwitch
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? "\n" + TrajectoryObservationRuntimeState.GearSwitchWaitingNotice
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: string.Empty;
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return "Session " + sessionId.ToString(CultureInfo.InvariantCulture) + ".\n" +
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"pose=(" + Format(observation.VehicleState.Pose.X) + ", " +
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Format(observation.VehicleState.Pose.Y) + ", " + Format(observation.VehicleState.Pose.Heading) +
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") m/rad, actual longitudinal speed=" +
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Format(observation.VehicleState.SignedLongitudinalSpeedMetersPerSecond) + " m/s.\n" +
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"planning=" + planning + ", latest replan elapsed=" +
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latestPlanningElapsed.TotalMilliseconds.ToString("F0", CultureInfo.InvariantCulture) + " ms.\n" +
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terminal + ".\n" + selected + ".\n" + loggedCommand + ".\n" +
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"LS projection failures=" + projectionFailures + "." + waiting;
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}
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private static TrajectoryObservationVisualizationPublisher StartWebVisualizationIfEnabled(long sessionId,
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TrajectoryObservationBootstrapResult bootstrap, TrajectoryObservationController controller,
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TrajectoryObservationSettings settings, long obstacleSnapshotVersion)
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{
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if (!settings.EnableWebVisualization) return null;
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var publisher = new TrajectoryObservationVisualizationPublisher(settings,
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new PlanningVisualizationSessionSink(), message => LogIfCurrent(sessionId, message));
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PlanningVisualizationSessionInfo sessionInfo;
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try
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{
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var staticSnapshot = new TrajectoryObservationStaticSnapshotBuilder().Build(bootstrap,
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controller.CreateEffectiveConfigurationSnapshot(), settings, obstacleSnapshotVersion);
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sessionInfo = publisher.Start(staticSnapshot);
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}
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catch (Exception exception)
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{
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publisher.Disable(exception);
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return null;
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}
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if (sessionInfo == null)
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return null;
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if (!TryAttachWebPublisher(sessionId, publisher))
|
||
{
|
||
publisher.Stop();
|
||
return null;
|
||
}
|
||
|
||
LogIfCurrent(sessionId, "网页可视化地址（含会话令牌）：" + sessionInfo.Uri.AbsoluteUri);
|
||
if (settings.AutoOpenWebVisualization)
|
||
{
|
||
try
|
||
{
|
||
Process.Start(new ProcessStartInfo
|
||
{
|
||
FileName = sessionInfo.Uri.AbsoluteUri,
|
||
UseShellExecute = true,
|
||
});
|
||
}
|
||
catch (Exception exception)
|
||
{
|
||
LogIfCurrent(sessionId, "无法自动打开网页；服务继续运行，请手动访问：" +
|
||
sessionInfo.Uri.AbsoluteUri + "；" + exception.GetType().Name + "：" + exception.Message);
|
||
}
|
||
}
|
||
return publisher;
|
||
}
|
||
|
||
private static bool TryAttachWebPublisher(long sessionId,
|
||
TrajectoryObservationVisualizationPublisher publisher)
|
||
{
|
||
lock (SessionSync)
|
||
{
|
||
if (activeSessionId != sessionId) return false;
|
||
activeWebPublisher = publisher;
|
||
return true;
|
||
}
|
||
}
|
||
|
||
private static void DrawIfCurrent(long sessionId, TrajectoryObservationBootstrapResult bootstrap,
|
||
TrajectoryObservationObservation observation, TrajectoryObservationCharts charts,
|
||
TrajectoryObservationRuntimeState runtimeState, TrajectoryObservationDiagnostic diagnostic)
|
||
{
|
||
lock (SessionSync)
|
||
{
|
||
if (activeSessionId != sessionId) return;
|
||
TrajectoryObservationPresentation presentation = activePresentation;
|
||
if (presentation == null) return;
|
||
string diagnosticText = diagnostic == null ? string.Empty : diagnostic.Text;
|
||
presentation.DrawWorld(bootstrap, observation, runtimeState, diagnosticText);
|
||
presentation.DrawLs(charts, diagnosticText);
|
||
presentation.DrawSt(charts, diagnosticText);
|
||
}
|
||
}
|
||
|
||
private static void LogIfCurrent(long sessionId, string message)
|
||
{
|
||
lock (SessionSync)
|
||
{
|
||
if (activeSessionId != sessionId) return;
|
||
PrintStatus(message);
|
||
}
|
||
}
|
||
|
||
private static void PrintStatus(string message)
|
||
{
|
||
string text = ObserveOnlyNotice + "\n" + message;
|
||
Hedingben.ToastText(text, StatusChannel);
|
||
Console.WriteLine("[TrajectoryObserver] " + text);
|
||
}
|
||
|
||
private static void Finish(long sessionId, CancellationTokenSource cancellation, Task completed)
|
||
{
|
||
try
|
||
{
|
||
completed.GetAwaiter().GetResult();
|
||
}
|
||
catch (OperationCanceledException)
|
||
{
|
||
}
|
||
catch (Exception exception)
|
||
{
|
||
ClearAndLogRuntimeFaultIfCurrent(sessionId, exception);
|
||
}
|
||
finally
|
||
{
|
||
lock (SessionSync)
|
||
{
|
||
if (activeSessionId == sessionId)
|
||
{
|
||
activeTask = null;
|
||
activeCancellation = null;
|
||
}
|
||
}
|
||
cancellation.Dispose();
|
||
}
|
||
}
|
||
|
||
private static void ClearAndLogRuntimeFaultIfCurrent(long sessionId, Exception exception)
|
||
{
|
||
lock (SessionSync)
|
||
{
|
||
if (activeSessionId != sessionId) return;
|
||
StopActiveVisualizationNoLock();
|
||
PrintStatus("Observation session failed; all observer layers were cleared: " +
|
||
exception.GetType().Name + ": " + exception.Message);
|
||
}
|
||
}
|
||
|
||
private static void StopActiveVisualizationNoLock()
|
||
{
|
||
TrajectoryObservationVisualizationPublisher publisher = activeWebPublisher;
|
||
activeWebPublisher = null;
|
||
publisher?.Stop();
|
||
|
||
TrajectoryObservationPresentation presentation = activePresentation;
|
||
activePresentation = null;
|
||
presentation?.ClearAll();
|
||
}
|
||
|
||
private static void CancelWithoutWaiting(CancellationTokenSource cancellation)
|
||
{
|
||
if (cancellation == null) return;
|
||
try
|
||
{
|
||
cancellation.Cancel();
|
||
}
|
||
catch (ObjectDisposedException)
|
||
{
|
||
}
|
||
}
|
||
|
||
private static string Format(double value)
|
||
{
|
||
return value.ToString("F3", CultureInfo.InvariantCulture);
|
||
}
|
||
}
|