/// <summary>
/// 获取指定终端编号在指定时间段内的历史轨迹
/// </summary>
/// <param name="aTerminalId">终端编号</param>
/// <param name="aStart">开始时间</param>
/// <param name="aEnd">结束时间</param>
/// <returns></returns>
public static JsonHistoryPosition GetHistory(string aTerminalId, DateTime aStart, DateTime aEnd)
{
string jsonStr = GetApiReply(GetHistoricalPosition(aTerminalId, aStart, aEnd));
if (string.IsNullOrEmpty(jsonStr))
{
return(null);
}
JsonHistoryPosition historyLocation = ModelUtils.GetJsonObject <JsonHistoryPosition>(jsonStr);
if (historyLocation != null)
{
return(historyLocation);
}
JsonBase errInfo = ModelUtils.GetJsonObject <JsonBase>(jsonStr);
if (errInfo == null)
{
return(null);
}
// 重新组合返回错误值
return(new JsonHistoryPosition
{
Status = errInfo.Status,
Message = errInfo.Message
});
}
/// <summary>
/// 进行查询
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnOk_Click(object sender, EventArgs e)
{
DateTime startTime = this.dtpStart.Value;
DateTime endTime = this.dtpEnd.Value;
if (startTime > endTime)
{
errPrv.SetError(this.dtpStart, "开始时间不能晚于结束时间...");
return;
}
string terminalId = this.txtTerminalId.Text.Trim();
if (string.IsNullOrEmpty(terminalId))
{
errPrv.SetError(this.txtTerminalId, "终端编号不能为空...");
this.txtTerminalId.Focus();
return;
}
this.History = null;
this.btnOk.Enabled = false;
var task = Task.Factory.StartNew(() =>
{
var history = UrlApiHelper.GetHistory(terminalId, startTime, endTime);
if (history == null)
{
GuiHelper.MsgBox("服务器连接异常...");
}
else if (history.Status != 0)
{
GuiHelper.MsgBox("轨迹查询失败: " + history.Message);
}
else if (history.Count < 1 || history.Items.Count < 1)
{
GuiHelper.MsgBox($"终端[{terminalId}]在该时间段内没有历史轨迹记录...");
}
else
{
this.History = history;
}
});
task.Wait();
this.btnOk.Enabled = true;
if (this.History != null)
{
this.DialogResult = DialogResult.OK;
this.Close();
}
}
/// <summary>
/// 播放历史轨迹信息
/// </summary>
/// <param name="aHistory"></param>
public void PlayHistory(JsonHistoryPosition aHistory)
{
mHistory.Clear();
var sortLst = aHistory.Items.OrderBy(x => x.GpsTime);
mHistoryVehicle = sortLst.FirstOrDefault();
mHistory.AddRange(sortLst);
List <Coordinate> points = new List <Coordinate>(aHistory.Count);
foreach (var history in sortLst)
{
Coordinate tmpPoint = new Coordinate(history.BdLongitude, history.BdLatitude);
points.Add(tmpPoint);
}
this.wbMap.ShowRoute(points);
this.btnPlay.Visible = true;
this.btnStop.Visible = true;
this.btnPlay.Checked = true;
this.mPlayIndex = 0;
this.tmrPlay.Start();
}
/// <summary>
/// 播放历史轨迹信息
/// </summary>
/// <param name="aHistory"></param>
public void PlayHistory(JsonHistoryPosition aHistory)
{
mFrmMap?.InvokeIfRequired((frm) => frm.PlayHistory(aHistory));
}