82 lines
2.2 KiB
C#
82 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace OrpaonEMS.Core.Model
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{
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/// <summary>
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/// 追踪指令值的模型
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/// </summary>
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public class TranceCmdValue
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{
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/// <summary>
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/// 实例化函数
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/// </summary>
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/// <param name="changeThreshold"></param>
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public TranceCmdValue(double changeThreshold)
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{
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ChangeThreshold = changeThreshold;
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}
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/// <summary>
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/// 变化的阀值
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/// </summary>
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public double ChangeThreshold { get; set; }
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/// <summary>
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/// 事件
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/// </summary>
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public event EventHandler<double> CmdValueChanged;
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private double _CmdValue;
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/// <summary>
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/// 指令值
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/// 可实时赋值
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/// </summary>
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public double CmdValue
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{
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get { return _CmdValue; }
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set
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{
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//发送0，代表是待机，此时不需要看变化了，防止上一个值在0附近，没有触发变化，还是输出一个靠近0的值出去
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if (value == 0 && value != _CmdValue)//value != _CmdValue 防止一直0值导致不停是Invoke事件
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{
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_CmdValue = value;
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//超过变化的阀值，可以触发动作 BeginInvoke 换 Invoke 可能导致问题
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CmdValueChanged.Invoke(this, 0);
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return;
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}
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if (value != _CmdValue && GetChange(value, _CmdValue))
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{
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_CmdValue = value;
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//超过变化的阀值，可以触发动作
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CmdValueChanged.Invoke(this, value);
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}
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}
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}
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/// <summary>
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/// 判断是否超过某个阀值数据
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/// </summary>
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/// <param name="newValue"></param>
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/// <param name="oldValue"></param>
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/// <returns></returns>
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private bool GetChange(double newValue, double oldValue)
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{
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if (Math.Abs(newValue - oldValue) >= ChangeThreshold)
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{
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return true;
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}
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return false;
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}
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}
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}
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