大地坐标系相互转换源码介绍
基于一个小的需求，写的一个大地坐标系相互转换小demo，其中包括WGS84，北京54，西安80,和国家2000之间的相互转换，并支持UTM投影和高斯投影。
源码介绍：
1、数据读取
//加载点数据
private void AddPointData_Click(object sender, EventArgs e)
{
OpenFileDialog p_dlg = new OpenFileDialog();
p_dlg.Filter = "All files(*.*)|*.*|txt files (*.txt)|*.txt";
p_dlg.FilterIndex = 2;
p_dlg.RestoreDirectory = true;
if (p_dlg.ShowDialog() == DialogResult.OK)
{
if (m_time != 0)
{
m_time = 0;
m_GPSPoint54.Clear();
m_GPSPoint80.Clear();
m_GPSPoint84.Clear();
m_GPSBL54.Clear();
m_GPSBL80.Clear();
m_GPSBL84.Clear();
}
//读取文件类型
if(radioButton4.Checked == true || radioButton7.Checked == true)
{
OpenDataxyH(p_dlg.FileName);
}
else if (radioButton8.Checked == true || radioButton12.Checked == true)
{
OpenDataBLH(p_dlg.FileName);
}
}
}读取投影坐标
private void OpenDataxyH(string p_filename)
{
//System.Windows.Forms.MessageBox.Show(m_Openfilename);
m_time += 1; //打开文件次数加1
StreamReader p_FRead = File.OpenText(p_filename);
int p_num = 0;
bool p_est = true;
string p_s = p_FRead.ReadLine();
while (p_est)
{
p_s = String_Replace(p_s, ' ');
string[] p_ss = p_s.Split(' ');
byte[] p_label = new byte[10];
p_label = System.Text.Encoding.Default.GetBytes(p_ss[0]);
if (p_ss[0] == "")
{
}
else if(p_label[0] =='P')
{
break;
}
//if (p_ss[0] == "PT001")
//{
// break;
//}
p_s = p_FRead.ReadLine();
}
//System.Windows.Forms.MessageBox.Show(p_s);
while (p_s != null)
{
p_s = String_Replace(p_s, ' ');
string[] p_ss = p_s.Split(' ');
// string[] p_ss = System.Text.RegularExpressions.Regex.Split(p_s,@[*]+);
double[] p_apoint = new double[2];
p_apoint[0] = double.Parse(p_ss[1]);
p_apoint[1] = double.Parse(p_ss[2]);
GpsInfo p_PointGPS = new GpsInfo();
p_PointGPS.Longitude = p_apoint[0];
p_PointGPS.Latitude = p_apoint[1];
if(radioButton1.Checked == true)
{
m_GPSPoint54.Add(p_PointGPS);
}
else if(radioButton2.Checked == true)
{
m_GPSPoint80.Add(p_PointGPS);
}
else if (radioButton3.Checked == true)
{
m_GPSPoint84.Add(p_PointGPS);
}
else if (radioButton13.Checked == true)
{
m_GPSPoint2000.Add(p_PointGPS);
}
p_num++;
p_s = p_FRead.ReadLine();
//System.Windows.Forms.MessageBox.Show(p_PointGPS.Latitude.ToString());
}
//
}读取经纬度数据
private void OpenDataBLH(string p_filename)
{
m_time += 1; //打开文件次数加1
StreamReader p_FRead = File.OpenText(p_filename);
int p_num = 0;
bool p_est = true;
string p_s = p_FRead.ReadLine();
while (p_est)
{
p_s = String_Replace(p_s, ' ');
string[] p_ss = p_s.Split(' ');
byte[] p_label = new byte[10];
p_label = System.Text.Encoding.Default.GetBytes(p_ss[0]);
if (p_ss[0] == "")
{
}
else if(p_label[0] =='L')
{
p_s = p_FRead.ReadLine();
break;
}
//if (p_ss[0] == "PT001")
//{
// break;
//}
p_s = p_FRead.ReadLine();
}
//System.Windows.Forms.MessageBox.Show(p_s);
while (p_s != null)
{
p_s = String_Replace(p_s, ' ');
string[] p_ss = p_s.Split(' ');
// string[] p_ss = System.Text.RegularExpressions.Regex.Split(p_s,@[*]+);
double[] p_apoint = new double[2];
p_apoint[0] = double.Parse(p_ss[0]);
p_apoint[1] = double.Parse(p_ss[1]);
GpsInfo p_PointGPS = new GpsInfo();
p_PointGPS.Longitude = p_apoint[0];
p_PointGPS.Latitude = p_apoint[1];
if (radioButton1.Checked == true)
{
m_GPSBL54.Add(p_PointGPS);
}
else if (radioButton2.Checked == true)
{
m_GPSBL80.Add(p_PointGPS);
}
else if (radioButton3.Checked == true)
{
m_GPSBL84.Add(p_PointGPS);
}
else if (radioButton13.Checked == true)
{
m_GPSBL2000.Add(p_PointGPS);
}
p_num++;
p_s = p_FRead.ReadLine();
//System.Windows.Forms.MessageBox.Show(p_PointGPS.Latitude.ToString());
}
}2、坐标转换
坐标转换类CoordTran
各坐标系常量（大地坐标参数）
public double m_54a = 6378245.0;
public double m_54b = 6356863.0188;
public double m_54c = 1.0 / 298.3;
public double m_80a = 6378140;
public double m_80b = 6356755.2881575;
public double m_80c = 1.0 / 298.25722101;
public double m_84a = 6378137.0;
public double m_84b = 6356752.314245;
public double m_84c = 1.0 / 298.257223565;
public double m_2000a = 6378137.0;
public double m_2000b = 6356752.314140;
public double m_2000c = 1.0/298.257222101;1）大地坐标与空间直角坐标系相互转换
//大地坐标系换换成空间直角坐标系
public void BLHToXYZ(double B, double L, double H, double aAxis, double bAxis)
{
double dblD2R = Math.PI / 180;
double e1 = Math.Sqrt(Math.Pow(aAxis, 2) - Math.Pow(bAxis, 2)) / aAxis;
double N = aAxis / Math.Sqrt(1.0 - Math.Pow(e1, 2) * Math.Pow(Math.Sin(B * dblD2R), 2));
targetX = (N + H) * Math.Cos(B * dblD2R) * Math.Cos(L * dblD2R);
targetY = (N + H) * Math.Cos(B * dblD2R) * Math.Sin(L * dblD2R);
targetZ = (N * (1.0 - Math.Pow(e1, 2)) + H) * Math.Sin(B * dblD2R);
} //七参数变换
public void TranParameter(transParaSeven p_sevenPara)
{
OriX = p_sevenPara.m_dbXRotate / 180 * Math.PI;
OriY = p_sevenPara.m_dbYRotate / 180 * Math.PI;
OriZ = p_sevenPara.m_dbZRotate / 180 * Math.PI;
NewX = p_sevenPara.m_dbXOffset + p_sevenPara.m_dbScale * targetX - targetY * OriZ + targetZ * OriY + targetX;
NewY = p_sevenPara.m_dbYOffset + p_sevenPara.m_dbScale * targetY + targetX * OriZ - targetZ * OriX + targetY;
NewZ = p_sevenPara.m_dbZOffset + p_sevenPara.m_dbScale * targetZ - targetX * OriY + targetY * OriX + targetZ;
} //空间直接坐标系转换为大地坐标系
public void XYZtoBLH(double X, double Y, double Z, double aAxis, double bAxis)
{
double e1 = (Math.Pow(aAxis, 2) - Math.Pow(bAxis, 2)) / Math.Pow(aAxis, 2);
double e2 = (Math.Pow(aAxis, 2) - Math.Pow(bAxis, 2)) / Math.Pow(bAxis, 2);
double S = Math.Sqrt(Math.Pow(X, 2) + Math.Pow(Y, 2));
double cosL = X / S;
double B = 0;
double L = 0;
//System.Windows.Forms.MessageBox.Show(e1.ToString());
L = Math.Acos(cosL);
L = Math.Abs(L);
double tanB = Z / S;
B = Math.Atan(tanB);
double c = aAxis * aAxis / bAxis;
double preB0 = 0.0;
double ll = 0.0;
double N = 0.0;
//迭代计算纬度
do {
preB0 = B;
ll = Math.Pow(Math.Cos(B), 2) * e2;
N = c / Math.Sqrt(1 + ll);
tanB = (Z + N * e1 * Math.Sin(B)) / S;
B = Math.Atan(tanB);
}
while (Math.Abs(preB0 - B) >= 0.0000000001);
ll = Math.Pow(Math.Cos(B), 2) * e2;
N = c / Math.Sqrt(1 + ll);
targetZ = Z / Math.Sin(B) - N * (1 - e1);
targetB = B * 180 / Math.PI;
targetL = L * 180 / Math.PI;
}2）高斯投影坐标与大地坐标想换转换
//高斯投影逆变换
public void GaussProjInvCal(double X, double Y, double a , double f,out double longitude, out double latitude)
{
int ProjNo; int ZoneWide; ////带宽
double longitude1, latitude1, longitude0, latitude0, X0, Y0, xval, yval;
double e1, e2, ee, NN, T, C, M, D, R, u, fai, iPI;
iPI = 0.0174532925199433; ////3.1415926535898/180.0;
//a = 6378245.0; f = 1.0 / 298.3; //54年北京坐标系参数
////a=6378140.0; f=1/298.257; //80年西安坐标系参数
ZoneWide = 6; ////6度带宽
ProjNo = (int)(X / 1000000L); //查找带号
longitude0 = (ProjNo - 1) * ZoneWide + ZoneWide / 2;
longitude0 = longitude0 * iPI; //中央经线
X0 = ProjNo * 1000000L + 500000L;
Y0 = 0;
xval = X - X0; yval = Y - Y0; //带内大地坐标
e2 = 2 * f - f * f;
e1 = (1.0 - Math.Sqrt(1 - e2)) / (1.0 + Math.Sqrt(1 - e2));
ee = e2 / (1 - e2);
M = yval;
u = M / (a * (1 - e2 / 4 - 3 * e2 * e2 / 64 - 5 * e2 * e2 * e2 / 256));
fai = u + (3 * e1 / 2 - 27 * e1 * e1 * e1 / 32) * Math.Sin(2 * u) + (21 * e1 * e1 / 16 - 55 * e1 * e1 * e1 * e1 / 32) * Math.Sin(4 * u)
+ (151 * e1 * e1 * e1 / 96) * Math.Sin(6 * u) + (1097 * e1 * e1 * e1 * e1 / 512) * Math.Sin(8 * u);
C = ee * Math.Cos(fai) * Math.Cos(fai);
T = Math.Tan(fai) * Math.Tan(fai);
NN = a / Math.Sqrt(1.0 - e2 * Math.Sin(fai) * Math.Sin(fai)); //字串1
R = a * (1 - e2) / Math.Sqrt((1 - e2 * Math.Sin(fai) * Math.Sin(fai)) * (1 - e2 * Math.Sin(fai) * Math.Sin(fai)) * (1 - e2 * Math.Sin
(fai) * Math.Sin(fai)));
D = xval / NN;
//计算经度(Longitude) 纬度(Latitude)
longitude1 = longitude0 + (D - (1 + 2 * T + C) * D * D * D / 6 + (5 - 2 * C + 28 * T - 3 * C * C + 8 * ee + 24 * T * T) * D
* D * D * D * D / 120) / Math.Cos(fai);
latitude1 = fai - (NN * Math.Tan(fai) / R) * (D * D / 2 - (5 + 3 * T + 10 * C - 4 * C * C - 9 * ee) * D * D * D * D / 24
+ (61 + 90 * T + 298 * C + 45 * T * T - 256 * ee - 3 * C * C) * D * D * D * D * D * D / 720);
//转换为度 DD
longitude = longitude1 / iPI;
latitude = latitude1 / iPI;
} //高斯投影由经纬度(UnitD)反算大地坐标(含带号，Unit:Metres)
public void GaussProjCal(double longitude, double latitude, double a , double f,ref double X, ref double Y)
{
int ProjNo=0; int ZoneWide; ////带宽
double longitude1,latitude1, longitude0,latitude0, X0,Y0, xval,yval;
double e2,ee, NN, T,C,A, M, iPI;
iPI = 0.0174532925199433; ////3.1415926535898/180.0;
ZoneWide = 6; ////6度带宽
//a=6378245.0; f=1.0/298.3; //54年北京坐标系参数
////a=6378140.0; f=1/298.257; //80年西安坐标系参数
ProjNo = (int)(longitude / ZoneWide) ;
longitude0 = ProjNo * ZoneWide + ZoneWide / 2;
longitude0 = longitude0 * iPI ;
latitude0=0;
longitude1 = longitude * iPI ; //经度转换为弧度
latitude1 = latitude * iPI ; //纬度转换为弧度
e2=2*f-f*f;
ee=e2*(1.0-e2);
NN=a/Math.Sqrt(1.0-e2*Math.Sin(latitude1)*Math.Sin(latitude1));
T = Math.Tan(latitude1) * Math.Tan(latitude1);
C = ee * Math.Cos(latitude1) * Math.Cos(latitude1);
A = (longitude1 - longitude0) * Math.Cos(latitude1);
M = a * ((1 - e2 / 4 - 3 * e2 * e2 / 64 - 5 * e2 * e2 * e2 / 256) * latitude1 - (3 * e2 / 8 + 3 * e2 * e2 / 32 + 45 * e2 * e2 * e2 / 1024) * Math.Sin(2 * latitude1)
+ (15 * e2 * e2 / 256 + 45 * e2 * e2 * e2 / 1024) * Math.Sin(4 * latitude1) - (35 * e2 * e2 * e2 / 3072) * Math.Sin(6 * latitude1));
xval = NN * (A + (1 - T + C) * A * A * A / 6 + (5 - 18 * T + T * T + 72 * C - 58 * ee) * A * A * A * A * A / 120);
yval = M + NN * Math.Tan(latitude1) * (A * A / 2 + (5 - T + 9 * C + 4 * C * C) * A * A * A * A / 24 + (61 - 58 * T + T * T + 600 * C - 330 * ee) * A * A * A * A * A * A / 720);
// X0 = 1000000L * (ProjNo + 1) + 500000L;//加带号
X0 = 500000L;
Y0 = 0;
xval = xval+X0; yval = yval+Y0;
X = xval;
Y = yval;
}3）各坐标系分类型转换函数
//高斯投影平面坐标转大地经纬度坐标（不同坐标系下）
public void xyHtoBLH(double x, double y, double H, double p_addL, transParaSeven p_ParaSeven, double p_xa, double p_xb, double p_xc,double p_Ba, double p_Bb)
{
//高斯投影逆变换
GaussProjInvCal(x, y, p_xa,p_xc,out targetL, out targetB);
targetL += p_addL;//加上带号
BLHToXYZ(targetB, targetL, targetZ, p_xa, p_xb);
TranParameter(p_ParaSeven);
XYZtoBLH(NewX, NewY, NewZ, p_Ba, p_Bb);
// targetL += p_addL;
//直接调用targetL、targetB即可
}
//不同坐标系的高斯平面直角坐标互转
public void xyHtoxyH(double x, double y, double H, double p_addL, transParaSeven p_ParaSeven, double p_xa, double p_xb, double p_xc,double p_Ba, double p_Bb,double p_Bc)
{
//高斯投影逆变换
GaussProjInvCal(x, y, p_xa,p_xc,out targetL, out targetB);
targetL += p_addL;//加上带号
BLHToXYZ(targetB, targetL, targetZ, p_xa, p_xb);
TranParameter(p_ParaSeven);
XYZtoBLH(NewX, NewY, NewZ, p_Ba, p_Bb);
GaussProjCal(targetL, targetB, p_Ba,p_Bc,ref targetx, ref targety);
//直接调用targetx、targety即可
}
//不同经纬度坐标互转
public void BLHtoBLH(double p_B, double p_L, double p_Z, double p_addL, transParaSeven p_ParaSeven, double p_xa, double p_xb, double p_Ba, double p_Bb)
{
// p_Z = 100;
BLHToXYZ(p_B, p_L, p_Z, p_xa, p_xb);
TranParameter(p_ParaSeven);
XYZtoBLH(NewX, NewY, NewZ, p_Ba, p_Bb);
//targetL += p_addL;
//直接调用targetL、targetB即可
}
//大地经纬度坐标转高斯平面直角坐标
public void BLHtoxyH(double p_B, double p_L, double p_Z, transParaSeven p_ParaSeven, double p_xa, double p_xb, double p_Ba, double p_Bb,double p_Bc)
{
BLHToXYZ(p_B, p_L, p_Z, p_xa, p_xb);
TranParameter(p_ParaSeven);
XYZtoBLH(NewX, NewY, NewZ, p_Ba, p_Bb);
GaussProjCal(targetL, targetB, p_Ba, p_Bc,ref targetx, ref targety);
//直接调用targetx、targety即可
}
//高斯投影转UTM投影
public void GStoUTM(double x, double y, double H, out double O_x, out double O_y, out double O_H)
{
O_x = TransformFactor * x;
O_y = TransformFactor * y;
O_H = H;
}
//UTM投影转高斯投影
public void UTMtoGS(double x, double y, double H, out double O_x, out double O_y, out double O_H)
{
O_x = x / TransformFactor;
O_y = y / TransformFactor;
O_H = H;
}3、规划航迹
//规划航迹
private void PlanTrack_Click(object sender, EventArgs e)
{
List<double> p_Dis = new List<double>();
List<double> p_CDis = new List<double>();
CoordTran p_CoordTran = new CoordTran();
PointProcess p_pproces = new PointProcess();
BufferArea p_buffer = new BufferArea();
double p_laL = double.Parse(textBox1.Text);
double p_laR = -p_laL;
//生成航迹
if(radioButton9.Checked == true )
{
List<GpsInfo> m_GPSNew54_L = new List<GpsInfo>();
List<GpsInfo> m_GPSNew54_R = new List<GpsInfo>();
List<GpsInfo> m_GPSNew54 = new List<GpsInfo>();
//保存距离
p_pproces.DistanceCalculateBL(m_GPSBL54,p_Dis,p_CDis,p_CoordTran,p_CoordTran.m_54a,p_CoordTran.m_54c);
SavePointDistance(p_CDis, p_Dis, "北京54坐标");
//生成浅剖面
p_buffer.CreateBufferArea2(m_GPSBL54, m_GPSNew54_L, p_laL, 0, p_CoordTran, m_proLine, p_CoordTran.m_54a, p_CoordTran.m_54c);
p_buffer.CreateBufferArea2(m_GPSBL54, m_GPSNew54_R, p_laR, 0, p_CoordTran, m_proLine, p_CoordTran.m_54a, p_CoordTran.m_54c);
p_buffer.LineDissect(m_GPSNew54_L, m_GPSNew54_R, m_GPSNew54);
string gpxName = System.Environment.CurrentDirectory + "\\" + "北京54" + "浅剖"+p_laL.ToString()+".gpx";
m_GpxWriter = new GpxWriter(gpxName);
int p_num = m_GPSNew54.Count;
for (int p_i = 0; p_i < p_num; p_i++)
{
m_GpxWriter.AddGpsInfo(m_GPSNew54[p_i]);
//System.Windows.Forms.MessageBox.Show(m_GPSPoint84[p_i].Longitude.ToString());
}
m_GpxWriter.WriteToGpx();
}
else if(radioButton10.Checked == true)
{
List<GpsInfo> m_GPSNew80_L = new List<GpsInfo>();
List<GpsInfo> m_GPSNew80_R = new List<GpsInfo>();
List<GpsInfo> m_GPSNew80 = new List<GpsInfo>();
p_pproces.DistanceCalculateBL(m_GPSBL80, p_Dis, p_CDis, p_CoordTran, p_CoordTran.m_80a, p_CoordTran.m_80c);
SavePointDistance(p_CDis, p_Dis, "西安80坐标");
//生成浅剖面
p_buffer.CreateBufferArea2(m_GPSBL80, m_GPSNew80_L, p_laL, 0, p_CoordTran, m_proLine, p_CoordTran.m_80a, p_CoordTran.m_80c);
p_buffer.CreateBufferArea2(m_GPSBL80, m_GPSNew80_R, p_laR, 0, p_CoordTran, m_proLine, p_CoordTran.m_80a, p_CoordTran.m_80c);
p_buffer.LineDissect(m_GPSNew80_L, m_GPSNew80_R, m_GPSNew80);
string gpxName = System.Environment.CurrentDirectory + "\\" + "西安80" + "浅剖" + p_laL.ToString() + ".gpx";
m_GpxWriter = new GpxWriter(gpxName);
int p_num = m_GPSNew80.Count;
for (int p_i = 0; p_i < p_num; p_i++)
{
m_GpxWriter.AddGpsInfo(m_GPSNew80[p_i]);
//System.Windows.Forms.MessageBox.Show(m_GPSPoint84[p_i].Longitude.ToString());
}
m_GpxWriter.WriteToGpx();
}
else if (radioButton11.Checked == true)
{
List<GpsInfo> m_GPSNew84_L = new List<GpsInfo>();
List<GpsInfo> m_GPSNew84_R = new List<GpsInfo>();
List<GpsInfo> m_GPSNew84 = new List<GpsInfo>();
//int p_num = m_GPSBL84.Count;
p_pproces.DistanceCalculateBL(m_GPSBL84, p_Dis, p_CDis, p_CoordTran, p_CoordTran.m_84a, p_CoordTran.m_84c);
SavePointDistance(p_CDis, p_Dis, "WGS84坐标");
//生成浅剖面
p_buffer.CreateBufferArea2(m_GPSBL84, m_GPSNew84_L, p_laL, 0, p_CoordTran, m_proLine, p_CoordTran.m_84a, p_CoordTran.m_84c);
p_buffer.CreateBufferArea2(m_GPSBL84, m_GPSNew84_R, p_laR, 0, p_CoordTran, m_proLine, p_CoordTran.m_84a, p_CoordTran.m_84c);
p_buffer.LineDissect(m_GPSNew84_L, m_GPSNew84_R, m_GPSNew84);
string gpxName = System.Environment.CurrentDirectory + "\\" + "WGS84" + "浅剖" + p_laL.ToString() + ".gpx";
m_GpxWriter = new GpxWriter(gpxName);
int p_num = m_GPSNew84.Count;
for (int p_i = 0; p_i < p_num; p_i++)
{
m_GpxWriter.AddGpsInfo(m_GPSNew84[p_i]);
//System.Windows.Forms.MessageBox.Show(m_GPSPoint84[p_i].Longitude.ToString());
}
m_GpxWriter.WriteToGpx();
}
else if (radioButton16.Checked == true)
{
List<GpsInfo> m_GPSNew2000_L = new List<GpsInfo>();
List<GpsInfo> m_GPSNew2000_R = new List<GpsInfo>();
List<GpsInfo> m_GPSNew2000 = new List<GpsInfo>();
//int p_num = m_GPSBL84.Count;
p_pproces.DistanceCalculateBL(m_GPSBL2000, p_Dis, p_CDis, p_CoordTran, p_CoordTran.m_2000a, p_CoordTran.m_2000c);
SavePointDistance(p_CDis, p_Dis, "CGCS2000坐标");
//生成浅剖面
p_buffer.CreateBufferArea2(m_GPSBL2000, m_GPSNew2000_L, p_laL, 0, p_CoordTran, m_proLine, p_CoordTran.m_84a, p_CoordTran.m_84c);
p_buffer.CreateBufferArea2(m_GPSBL2000, m_GPSNew2000_R, p_laR, 0, p_CoordTran, m_proLine, p_CoordTran.m_84a, p_CoordTran.m_84c);
p_buffer.LineDissect(m_GPSNew2000_L, m_GPSNew2000_R, m_GPSNew2000);
string gpxName = System.Environment.CurrentDirectory + "\\" + "WGS84" + "浅剖" + p_laL.ToString() + ".gpx";
m_GpxWriter = new GpxWriter(gpxName);
int p_num = m_GPSNew2000.Count;
for (int p_i = 0; p_i < p_num; p_i++)
{
m_GpxWriter.AddGpsInfo(m_GPSNew2000[p_i]);
//System.Windows.Forms.MessageBox.Show(m_GPSPoint84[p_i].Longitude.ToString());
}
m_GpxWriter.WriteToGpx();
}
}4、航迹缓冲区生成
根据航迹点生成其对应的缓冲区（可以应用在航迹规划缓冲区，道路缓冲区等一系列线性点的缓冲区生成）
类：BufferArea
public double bufferWidth; //缓冲区宽度
public double bufferHeight; //缓冲区的高度
public double LineOrizontal; //缓冲区为水平方向
public double LineVertical; //缓冲区为垂直方向
//List<GpsInfo>
//点转换
public void PointTran(GpsInfo p_OldGPS, CoordTran p_CoordTran, double p_xa, double p_xc,ref double p_X,ref double p_Y)
{
double p_B, p_L, p_H;
p_L = p_OldGPS.Longitude;
p_B = p_OldGPS.Latitude;
p_H = 0.0;
p_CoordTran.GaussProjCal(p_L, p_B, p_xa, p_xc, ref p_X, ref p_Y);//转换
}
//点转换
public void PointTranBL(double p_X, double p_Y, CoordTran p_CoordTran, double p_AddL, double p_xa, double p_xc, ref double p_B, ref double p_L)
{
double p_Z = 0.0;
double p_lon = 0.0;
double p_lat = 0.0;
p_CoordTran.GaussProjInvCal(p_X, p_Y, p_xa, p_xc, out p_lon, out p_lat);//转换
p_L = p_lon + p_AddL;
p_B = p_lat;
}
public void CreateBufferArea(List<GpsInfo> p_OldGPS, List<GpsInfo> p_NewGPS, double p_width, int p_lable, CoordTran p_CoordTran, double p_AddL, double p_xa, double p_xc)
{
int p_pointNum = p_OldGPS.Count;
double point1_x = 0.0;
double point1_y = 0.0;
double point2_x = 0.0;
double point2_y = 0.0;
PointTran(p_OldGPS[0], p_CoordTran, p_xa, p_xc, ref point1_x, ref point1_y);
PointTran(p_OldGPS[1], p_CoordTran, p_xa, p_xc, ref point2_x, ref point2_y);
double p_a1 = (point1_y - point2_y) / (point1_x - point2_x);
double p_a2 ,p_b2;
if(p_width == 0.0)
{
for (int p_i = 0; p_i < p_pointNum;p_i++ )
{
p_NewGPS.Add(p_OldGPS[p_i]);
}
}
else
{
if (p_a1 == 0) //生成垂直方向缓冲区
{
//暂不处理
}
else
{
p_a2 = -1.0 / p_a1; //求直线斜率
p_b2 = point1_y - (p_a2 * point1_x); //求直线偏移量
//采用直接计算方法
double p_d = Math.Pow(p_width, 2) /(Math.Pow(p_a2, 2) + 1.0);
double p_X1 = point1_x + Math.Sqrt(p_d);
double p_X2 = point1_x - Math.Sqrt(p_d);
double p_Y1 = p_a2 * p_X1 + p_b2;
double p_Y2 = p_a2 * p_X2 + p_b2;
double p_B1 = 0.0;
double p_L1 = 0.0;
double p_B2 = 0.0;
double p_L2 = 0.0;
PointTranBL(p_X1, p_Y1, p_CoordTran, p_AddL, p_xa, p_xc, ref p_B1, ref p_L1);
PointTranBL(p_X2, p_Y2, p_CoordTran, p_AddL, p_xa, p_xc, ref p_B2, ref p_L2);
if (p_lable == 0)
{
for (int p_i = 0; p_i < p_pointNum; p_i++)
{
GpsInfo p_pinfo = new GpsInfo();
if (p_i == 0) //第一个点
{
if(p_width > 0 )
{
p_pinfo.Latitude = p_B1;
p_pinfo.Longitude = p_L1;
p_pinfo.Altitude = p_i + 1;
p_pinfo.Speed = "unistrong:104";
p_NewGPS.Add(p_pinfo);
}
else
{
p_pinfo.Latitude = p_B2;
p_pinfo.Longitude = p_L2;
p_pinfo.Altitude = p_i + 1;
p_pinfo.Speed = "unistrong:104";
p_NewGPS.Add(p_pinfo);
}
}//第一个点结束//
else
{
double p_lon = p_OldGPS[p_i].Longitude - p_OldGPS[p_i - 1].Longitude;
double p_lat = p_OldGPS[p_i].Latitude - p_OldGPS[p_i - 1].Latitude;
p_pinfo.Longitude = p_NewGPS[p_i - 1].Longitude + p_lon;
p_pinfo.Latitude = p_NewGPS[p_i - 1].Latitude + p_lat;
p_pinfo.Altitude = p_i + 1;
p_pinfo.Speed = "unistrong:104";
p_NewGPS.Add(p_pinfo);
}
}//for结束
}
else if(p_lable == 1)
{
for (int p_i = 0; p_i < p_pointNum; p_i++)
{
GpsInfo p_pinfo = new GpsInfo();
if (p_i == 0) //第一个点
{
p_pinfo.Latitude = p_Y2;
p_pinfo.Longitude = p_X2;
p_pinfo.Altitude = p_i + 1;
p_pinfo.Speed = "unistrong:104";
p_NewGPS.Add(p_pinfo);
}//第一个点结束//
else
{
double p_lon = p_OldGPS[p_i].Longitude - p_OldGPS[p_i - 1].Longitude;
double p_lat = p_OldGPS[p_i].Latitude - p_OldGPS[p_i - 1].Latitude;
p_pinfo.Longitude = p_NewGPS[p_i - 1].Longitude + p_lon;
p_pinfo.Latitude = p_NewGPS[p_i - 1].Latitude + p_lat;
p_pinfo.Altitude = p_i + 1;
p_pinfo.Speed = "unistrong:104";
p_NewGPS.Add(p_pinfo);
}
}//for结束
}//if结束
}//缓冲区判断
}
}
public void CreateBufferArea2(List<GpsInfo> p_OldGPS, List<GpsInfo> p_NewGPS, double p_width, int p_lable, CoordTran p_CoordTran, double p_AddL, double p_xa, double p_xc)
{
int p_pointNum = p_OldGPS.Count;
double point1_x = 0.0;
double point1_y = 0.0;
double point2_x = 0.0;
double point2_y = 0.0;
double p_a, p_b, p_d;
p_a = p_b = p_d = 0.0;
for (int p_ii = 0; p_ii < p_pointNum ;p_ii++ )
{
if (p_ii < p_pointNum - 1)
{
PointTran(p_OldGPS[p_ii], p_CoordTran, p_xa, p_xc, ref point1_x, ref point1_y);
PointTran(p_OldGPS[p_ii + 1], p_CoordTran, p_xa, p_xc, ref point2_x, ref point2_y);
double p_a1 = (point1_y - point2_y) / (point1_x - point2_x);
double p_a2, p_b2, p_d2;//记录直线信息
p_a2 = p_b2 = p_d2 = 0.0;
if (p_width == 0.0)
{
for (int p_i = 0; p_i < p_pointNum; p_i++)
{
p_NewGPS.Add(p_OldGPS[p_i]);
}
}
else
{
if (p_a1 == 0) //生成垂直方向缓冲区
{
//暂不处理
}
else
{
p_a2 = -1.0 / p_a1; //求直线斜率
p_b2 = point1_y - (p_a2 * point1_x); //求直线偏移量
//采用直接计算方法
p_d2 = Math.Pow(p_width, 2) / (Math.Pow(p_a2, 2) + 1.0);
double p_X1 = point1_x + Math.Sqrt(p_d2);
double p_X2 = point1_x - Math.Sqrt(p_d2);
double p_Y1 = p_a2 * p_X1 + p_b2;
double p_Y2 = p_a2 * p_X2 + p_b2;
double p_B1 = 0.0;
double p_L1 = 0.0;
double p_B2 = 0.0;
double p_L2 = 0.0;
PointTranBL(p_X1, p_Y1, p_CoordTran, p_AddL, p_xa, p_xc, ref p_B1, ref p_L1);
PointTranBL(p_X2, p_Y2, p_CoordTran, p_AddL, p_xa, p_xc, ref p_B2, ref p_L2);
GpsInfo p_pinfo = new GpsInfo();
if ((p_width > 0 && p_a2 > 0) || (p_width < 0 && p_a2 < 0))
{
p_pinfo.Latitude = p_B1;
p_pinfo.Longitude = p_L1;
p_pinfo.Altitude = p_ii + 1;
p_pinfo.Speed = "unistrong:104";
p_NewGPS.Add(p_pinfo);
}
else
{
p_pinfo.Latitude = p_B2;
p_pinfo.Longitude = p_L2;
p_pinfo.Altitude = p_ii + 1;
p_pinfo.Speed = "unistrong:104";
p_NewGPS.Add(p_pinfo);
}
}
}
p_a = p_a2;
p_b = p_b2;
p_d = p_d2;
}
else if(p_ii == p_pointNum -1) //最后一个点
{
//PointTran(p_OldGPS[p_ii], p_CoordTran, p_xa, p_xc, ref point1_x, ref point1_y);
//double p_X1 = point1_x + Math.Sqrt(p_d);
//double p_X2 = point1_x - Math.Sqrt(p_d);
//double p_Y1 = p_a * p_X1 + p_b;
//double p_Y2 = p_a * p_X2 + p_b;
//double p_B1 = 0.0;
//double p_L1 = 0.0;
//double p_B2 = 0.0;
//double p_L2 = 0.0;
//PointTranBL(p_X1, p_Y1, p_CoordTran, p_AddL, p_xa, p_xc, ref p_B1, ref p_L1);
//PointTranBL(p_X2, p_Y2, p_CoordTran, p_AddL, p_xa, p_xc, ref p_B2, ref p_L2);
GpsInfo p_pinfo = new GpsInfo();
double p_lon = p_OldGPS[p_ii].Longitude - p_OldGPS[p_ii - 1].Longitude;
double p_lat = p_OldGPS[p_ii].Latitude - p_OldGPS[p_ii - 1].Latitude;
p_pinfo.Longitude = p_NewGPS[p_ii - 1].Longitude + p_lon;
p_pinfo.Latitude = p_NewGPS[p_ii - 1].Latitude + p_lat;
p_pinfo.Altitude = p_ii + 1;
p_pinfo.Speed = "unistrong:104";
p_NewGPS.Add(p_pinfo);
//if (p_width > 0)
//{
// p_pinfo.Latitude = p_B1;
// p_pinfo.Longitude = p_L1;
// p_pinfo.Altitude = p_ii + 1;
// p_pinfo.Speed = "unistrong:104";
// p_NewGPS.Add(p_pinfo);
//}
//else
//{
// p_pinfo.Latitude = p_B2;
// p_pinfo.Longitude = p_L2;
// p_pinfo.Altitude = p_ii + 1;
// p_pinfo.Speed = "unistrong:104";
// p_NewGPS.Add(p_pinfo);
//}
}
}
}
//生成浅剖/
public void LineDissect(List<GpsInfo> p_LGPS, List<GpsInfo> p_RGPS, List<GpsInfo> p_NewGPS)
{
int p_num1 = p_LGPS.Count;
int p_num2 = p_RGPS.Count;
int p_Label, p_Label_R, p_i, p_j;
p_Label = p_Label_R = 0;
int p_PointNum = 0; //
for (p_i = 0; p_i < p_num1; p_i++)
{
p_PointNum += 1; //点数+1
p_NewGPS.Add(p_LGPS[p_i]);
p_NewGPS[p_PointNum - 1].Altitude = p_PointNum;
//加载右侧的点
while (p_Label < 2 && p_Label_R < p_num2)
{
p_NewGPS.Add(p_RGPS[p_Label_R]);
p_Label_R += 1;
p_PointNum++; //点数+1
p_NewGPS[p_PointNum - 1].Altitude = p_PointNum;
p_Label++;
}
p_Label = 0; //初始化
//加载左侧的点
p_i += 1;
if (p_i < p_num1)
{
p_NewGPS.Add(p_LGPS[p_i]);
p_PointNum++; //点数+1
p_NewGPS[p_PointNum - 1].Altitude = p_PointNum;
}
}缓冲区生成
//缓冲区生成
private void BufferArea_Click(object sender, EventArgs e)
{
CoordTran p_CoordTran = new CoordTran();
p_CoordTran.targetX = 0.0;
p_CoordTran.targetY = 0.0;
p_CoordTran.targetZ = 0.0;
double p_interval = double.Parse(textBox12.Text); //间隔大小
double p_low = double.Parse(textBox10.Text);
double p_high = double.Parse(textBox11.Text); //数值上下限
BufferArea p_buffer = new BufferArea();
int p_N =(int)((p_high - p_low) / p_interval);
if (radioButton9.Checked == true)
{
for (int p_i = 0; p_i <= p_N; p_i++)
{
List<GpsInfo> m_GPSNew54 = new List<GpsInfo>();
double p_la = p_low + p_i * p_interval;
string gpxName = System.Environment.CurrentDirectory + "\\" + "北京54" + p_la.ToString() + "m缓冲.gpx";
m_GpxWriter = new GpxWriter(gpxName);
int p_num = m_GPSBL54.Count;
p_buffer.CreateBufferArea2(m_GPSBL54, m_GPSNew54, p_la, 0, p_CoordTran, m_proLine, p_CoordTran.m_54a, p_CoordTran.m_54c);
for (int p_ii = 0; p_ii < p_num; p_ii++)
{
m_GpxWriter.AddGpsInfo(m_GPSNew54[p_ii]);
//System.Windows.Forms.MessageBox.Show(m_GPSPoint84[p_i].Longitude.ToString());
}
m_GpxWriter.WriteToGpx();
}
}
else if (radioButton10.Checked == true)
{
for (int p_i = 0; p_i <= p_N; p_i++)
{
List<GpsInfo> m_GPSNew80 = new List<GpsInfo>();
double p_la = p_low + p_i * p_interval;
string gpxName = System.Environment.CurrentDirectory + "\\" + "西安80" + p_la.ToString() + "m缓冲.gpx";
m_GpxWriter = new GpxWriter(gpxName);
int p_num = m_GPSBL80.Count;
p_buffer.CreateBufferArea2(m_GPSBL80, m_GPSNew80, p_la, 0, p_CoordTran, m_proLine, p_CoordTran.m_80a, p_CoordTran.m_80c);
for (int p_ii = 0; p_ii < p_num; p_ii++)
{
m_GpxWriter.AddGpsInfo(m_GPSNew80[p_ii]);
//System.Windows.Forms.MessageBox.Show(m_GPSPoint84[p_i].Longitude.ToString());
}
m_GpxWriter.WriteToGpx();
}
}
else if (radioButton11.Checked == true)
{
for (int p_i = 0; p_i <= p_N; p_i++)
{
List<GpsInfo> m_GPSNew84 = new List<GpsInfo>();
double p_la = p_low + p_i * p_interval;
string gpxName = System.Environment.CurrentDirectory + "\\" + "WGS84" + p_la.ToString() + "m缓冲.gpx";
m_GpxWriter = new GpxWriter(gpxName);
int p_num = m_GPSBL84.Count;
p_buffer.CreateBufferArea2(m_GPSBL84, m_GPSNew84, p_la, 0, p_CoordTran, m_proLine, p_CoordTran.m_84a, p_CoordTran.m_84c);
for (int p_ii = 0; p_ii < p_num; p_ii++)
{
m_GpxWriter.AddGpsInfo(m_GPSNew84[p_ii]);
//System.Windows.Forms.MessageBox.Show(m_GPSPoint84[p_i].Longitude.ToString());
}
m_GpxWriter.WriteToGpx();
}
}
}源码位置：http://download.csdn.net/download/u011326478/10246916