public bool PointIsInPolygon(EMapPoint[] mapPoints, EMapPoint mapPoint)
{
if (mapPoints.Length < 3)
{
throw new ArgumentException("多边形顶点必须大于3个!");
}
int j = 0, count = 0;
for (int i = 0; i < mapPoints.Length; i++)
{
j = (i == mapPoints.Length - 1) ? 0 : j + 1;
if ((mapPoints[i].Lat != mapPoints[j].Lat) &&
(((mapPoint.Lat >= mapPoints[i].Lat) &&
(mapPoint.Lat < mapPoints[j].Lat)) ||
((mapPoint.Lat >= mapPoints[j].Lat) &&
(mapPoint.Lat < mapPoints[i].Lat))) &&
(mapPoint.Lng < (mapPoints[j].Lng - mapPoints[i].Lng) * (mapPoint.Lat - mapPoints[i].Lat) / (mapPoints[j].Lat - mapPoints[i].Lat) + mapPoints[i].Lng))
{
count++;
}
}
return (count % 2 > 0) ? true : false;
}
public bool PointIsInCircle(EMapPoint mapCenterPoint, double radius, EMapPoint mapPoint)
{
return GetDistance(mapCenterPoint, mapPoint) <= radius;
}
public bool PointIsInRect(EMapPoint mapAPoint, EMapPoint mapBPoint, EMapPoint mapPoint)
{
double maxx = 0;
double minx = 0;
double maxy = 0;
double miny = 0;
if (mapAPoint.Lng > mapBPoint.Lng)
{
maxx = mapAPoint.Lng;
minx = mapBPoint.Lng;
}
else
{
maxx = mapBPoint.Lng;
minx = mapAPoint.Lng;
}
if (mapAPoint.Lat > mapBPoint.Lat)
{
maxy = mapAPoint.Lat;
miny = mapBPoint.Lat;
}
else
{
maxy = mapBPoint.Lat;
miny = mapAPoint.Lat;
}
if (mapPoint.Lng < maxx && mapPoint.Lng > minx && mapPoint.Lat < maxy && mapPoint.Lat > miny)
{
return true;
}
else
{
return false;
}
}
public EMapLocation GetLocation(EMapPoint mapPoint)
{
EMapLocation location = new EMapLocation();
try
{
var url = string.Format("http://api.map.baidu.com/geocoder/v2/?output=xml&coordtype={0}ll&location={1},{2}&ak={3}", mapPoint.Coordinates.ToString().ToLower(), mapPoint.Lat, mapPoint.Lng, _baduKey);
var xml = HttpLibSyncRequest.Get(url);
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
XmlElement root = doc.DocumentElement;
XmlNode res = root.SelectSingleNode("result");
location.Address = res.SelectSingleNode("formatted_address").InnerText;
location.Province = res.SelectSingleNode("addressComponent/province").InnerText;
location.City = res.SelectSingleNode("addressComponent/city").InnerText;
location.District = res.SelectSingleNode("addressComponent/district").InnerText;
location.Street = res.SelectSingleNode("addressComponent/street").InnerText;
}
catch
{
location.Address = "无法解析地址";
}
return location;
}
public double GetDistance(EMapPoint mapPoint1, EMapPoint mapPoint2)
{
double radLat1 = mapPoint1.Lat * Math.PI / 180.0;
double radLat2 = mapPoint2.Lat * Math.PI / 180.0;
double a = radLat1 - radLat2;
double b = mapPoint1.Lng * Math.PI / 180.0 - mapPoint2.Lng * Math.PI / 180.0;
double s = 2 * Math.Asin(Math.Sqrt(Math.Pow(Math.Sin(a / 2), 2) +
Math.Cos(radLat1) * Math.Cos(radLat2) * Math.Pow(Math.Sin(b / 2), 2)));
s = s * (_r / 1000);
s = Math.Round(s * 10000) / 10;
return s;
}
public bool IsOutOfChina(EMapPoint mapPoint)
{
if (mapPoint.Lng < 72.004 || mapPoint.Lng > 137.8347)
return true;
if (mapPoint.Lat < 0.8293 || mapPoint.Lat > 55.8271)
return true;
return false;
}
public void ReCalcMileageReportDays(int deviceId, DateTime reportDay)
{
var mrd = _rep.Get<EMileageReportDay>(p => p.DeviceId == deviceId && p.ReportDay == reportDay.GetDayStartTime());
if (mrd == null)
{
CreateMileageReportDayByReportDay(deviceId, reportDay);
}
else
{
mrd.UpdateTime = DateTime.Now;
var list = _positionService.GetDeviceHistoryDatas(deviceId, reportDay);
if (list.Count > 1)
{
mrd.DayMileage = _mileageService.CalcMileage(list);
var spt = new EMapPoint(list[0].E, list[0].F);
mrd.StartTime = list[0].I;
mrd.StartLatLng = spt.ToString();
mrd.StartAddress = _mapService.GetLocation(spt).Address;
var ept = new EMapPoint(list[list.Count - 1].E, list[list.Count - 1].F);
mrd.EndTime = list[list.Count - 1].I;
mrd.EndLatLng = ept.ToString();
mrd.EndAddress = _mapService.GetLocation(ept).Address;
}
_rep.Save(mrd, p => p.DeviceId == deviceId && p.ReportDay == reportDay.GetDayStartTime());
}
}
public EMapPoint[] Wgs84ToGcj02(EMapPoint[] mapPoints)
{
for (var i = 0; i < mapPoints.Length; i++)
{
mapPoints[i] = Wgs84ToGcj02(mapPoints[i]);
}
return mapPoints;
}
public EMapPoint Wgs84ToBd09(EMapPoint mapPoint)
{
try
{
var url = string.Format("http://api.map.baidu.com/geoconv/v1/?output=xml&coords={0},{1}&from=1&to=5&ak={2}", mapPoint.Lng, mapPoint.Lat, _baduKey);
var xml = HttpLibSyncRequest.Get(url);
var doc = new XmlDocument();
doc.LoadXml(xml);
var root = doc.DocumentElement;
var res = root.SelectSingleNode("result");
mapPoint.Lng = Convert.ToDouble(res.SelectSingleNode("point/x").InnerText);
mapPoint.Lat = Convert.ToDouble(res.SelectSingleNode("point/y").InnerText);
mapPoint.Coordinates = EnumMapCoordinates.Bd09;
}
catch (Exception ex)
{
_logger.Error("Wgs84ToBd09出错", ex);
}
return mapPoint;
}
public EMapPoint Wgs84ToGcj02(EMapPoint mapPoint)
{
if (IsOutOfChina(mapPoint))
{
return mapPoint;
}
var dLat = TransFormLat(mapPoint.Lng - 105.0, mapPoint.Lat - 35.0);
var dLon = TransFormLng(mapPoint.Lng - 105.0, mapPoint.Lat - 35.0);
var radLat = mapPoint.Lat / 180.0 * Math.PI;
var magic = Math.Sin(radLat);
magic = 1 - _e * magic * magic;
var sqrtMagic = Math.Sqrt(magic);
dLat = (dLat * 180.0) / ((_r * (1 - _e)) / (magic * sqrtMagic) * Math.PI);
dLon = (dLon * 180.0) / (_r / sqrtMagic * Math.Cos(radLat) * Math.PI);
var mgLat = mapPoint.Lat + dLat;
var mgLon = mapPoint.Lng + dLon;
return new EMapPoint(mgLat, mgLon) { Coordinates = EnumMapCoordinates.Gcj02 };
}
public EMapPoint[] Gcj02ToWgs84(EMapPoint[] mapPoints)
{
for (var i = 0; i < mapPoints.Length; i++)
{
mapPoints[i] = Gcj02ToWgs84(mapPoints[i]);
}
return mapPoints;
}
public EMapPoint Gcj02ToWgs84(EMapPoint mapPoint)
{
var mapPoint1 = TransForm(mapPoint);
var lontitude = mapPoint.Lng * 2 - mapPoint1.Lng;
var latitude = mapPoint.Lat * 2 - mapPoint1.Lat;
return new EMapPoint(latitude, lontitude) { Coordinates = EnumMapCoordinates.Wgs84 };
}
public ActionResult GetLocation(EMapPoint mapPoint)
{
var location = _mapService.GetLocation(mapPoint);
return JsonResult(location);
}
public void CreateMileageReportDayByReportDay(int deviceId, DateTime reportDay)
{
var mrd = new EMileageReportDay() { DeviceId = deviceId, ReportDay = reportDay };
var list = _positionService.GetDeviceHistoryDatas(deviceId, reportDay);
if (list.Count > 1)
{
mrd.DayMileage = _mileageService.CalcMileage(list);
var spt = new EMapPoint(list[0].E, list[0].F);
mrd.StartTime = list[0].I;
mrd.StartLatLng = spt.ToString();
mrd.StartAddress = _mapService.GetLocation(spt).Address;
var ept = new EMapPoint(list[list.Count - 1].E, list[list.Count - 1].F);
mrd.EndTime = list[list.Count - 1].I;
mrd.EndLatLng = ept.ToString();
mrd.EndAddress = _mapService.GetLocation(ept).Address;
}
mrd.CreateTime = DateTime.Now;
mrd.UpdateTime = DateTime.Now;
_rep.Add(mrd);
}
public bool PointIsInLineSegment(EMapPoint mapStartPoint, EMapPoint mapEndPoint, EMapPoint mapPoint, double offset = 1)
{
//result>0 在线的左边 result<0在线的右边 result=0 在线上
var result = ((mapStartPoint.Lng - mapPoint.Lng) * (mapEndPoint.Lat - mapPoint.Lat) - (mapEndPoint.Lng - mapPoint.Lng) * (mapStartPoint.Lat - mapPoint.Lat)) * 1000000;
var absResult = Math.Abs(result);
if (absResult < offset)
{
//如果已经确定点在线上了(这里仅仅是确定是在这个线上,线是无线延长的 故还不是确定在线段里面) 这里还需要确定一下 这个点是否是在这两个点组成的矩形里面
return PointIsInRect(mapStartPoint, mapEndPoint, mapPoint);
}
return false;
}
public EMapPoint[] Wgs84ToBd09(EMapPoint[] mapPoints)
{
List<EMapPoint> list = new List<EMapPoint>(mapPoints.Length);
try
{
var size = 100;
var totalPage = mapPoints.Length / size;
if (mapPoints.Length % size > 0)
{
totalPage++;
}
for (int i = 0; i < totalPage; i++)
{
var converts = mapPoints.Skip(i * size).Take(size);
var url = string.Format("http://api.map.baidu.com/geoconv/v1/?output=xml&coords={0}&from=1&to=5&ak={1}", string.Join(";", converts.Select(p => p.Lng + "," + p.Lat).ToArray()), _baduKey);
var xml = HttpLibSyncRequest.Get(url);
var doc = new XmlDocument();
doc.LoadXml(xml);
var root = doc.DocumentElement;
var res = root.SelectSingleNode("result").Cast<XmlNode>().Select(p => new EMapPoint()
{
Lng = Convert.ToDouble(p.SelectSingleNode("x").InnerText),
Lat = Convert.ToDouble(p.SelectSingleNode("y").InnerText)
});
list.AddRange(res);
}
}
catch (Exception ex)
{
_logger.Error("批量Wgs84ToBd09出错", ex);
return mapPoints;
}
return list.ToArray();
}
public bool PointIsInLine(EMapPoint[] mapPoints, EMapPoint mapPoint, double offset = 1)
{
if (mapPoints.Length < 2)
{
throw new ArgumentException("线上的点必须大于2个!");
}
//取出线上的每一段出来匹配 如果只要有点在其中一段上 那么说明点在线上
for (int i = 0, j = 1; i < mapPoints.Length - 1; i++, j++)
{
if (PointIsInLineSegment(mapPoints[i], mapPoints[j], mapPoint, offset))
{
return true;
}
}
return false;
}
private EMapPoint TransForm(EMapPoint mapPoint)
{
if (IsOutOfChina(mapPoint))
{
return mapPoint;
}
var dLat = TransFormLat(mapPoint.Lng - 105.0, mapPoint.Lat - 35.0);
var dLon = TransFormLng(mapPoint.Lng - 105.0, mapPoint.Lat - 35.0);
var radLat = mapPoint.Lat / 180.0 * Math.PI;
var magic = Math.Sin(radLat);
magic = 1 - _e * magic * magic;
var sqrtMagic = Math.Sqrt(magic);
dLat = (dLat * 180.0) / ((_r * (1 - _e)) / (magic * sqrtMagic) * Math.PI);
dLon = (dLon * 180.0) / (_r / sqrtMagic * Math.Cos(radLat) * Math.PI);
var mgLat = mapPoint.Lat + dLat;
var mgLon = mapPoint.Lng + dLon;
return new EMapPoint(mgLat, mgLon);
}
public VDeviceCurrentData GetVDeviceCurrentData(int deviceId, EnumMapCoordinates coordinates)
{
var deviceCurrentData = _rep.Query<EDevice, EDeviceCurrentData, VDeviceCurrentData>()
.LeftJoin<EDeviceCurrentData>((d, c) => d.Id == c.DeviceId)
.Where(p => p.Id == deviceId)
.Select((d, c) => new Columns(d.Id.As("DeviceId"), d.DeviceName, c)).Single();
EMapPoint tpt = null;
EMapPoint fpt = new EMapPoint(deviceCurrentData.Latitude, deviceCurrentData.Longitude);
switch (coordinates)
{
case EnumMapCoordinates.Gcj02:
tpt = _mapService.Wgs84ToGcj02(fpt);
break;
case EnumMapCoordinates.Bd09:
tpt = _mapService.Wgs84ToBd09(fpt);
break;
}
if (tpt != null)
{
deviceCurrentData.Latitude = tpt.Lat;
deviceCurrentData.Longitude = tpt.Lng;
}
return deviceCurrentData;
}
private void button5_Click(object sender, EventArgs e)
{
var ms = CdevContainer.Ins.Resolve<IMapService>();
EMapPoint wgs84 = new EMapPoint(22.8094582785, 108.3377612871);
var location = ms.GetLocation(wgs84);
EMapPoint gcj02 = new EMapPoint(22.8067264385, 108.3417899671);
EMapPoint gcj022 = ms.Wgs84ToGcj02(wgs84);
EMapPoint wgs842 = ms.Gcj02ToWgs84(gcj02);
Trace.WriteLine("wgs84 :" + wgs84);
Trace.WriteLine("wgs842 :" + wgs842);
Trace.WriteLine("d1 :" + ms.GetDistance(wgs84, wgs842));
Trace.WriteLine("gcj02 :" + gcj02);
Trace.WriteLine("gcj022 :" + gcj022);
Trace.WriteLine("d2 :" + ms.GetDistance(gcj02, gcj022));
Console.Read();
}