class CoordSys { public: double a, b, c, f, e; CoordSys(); ~CoordSys(); void XYZ2BLH(); XYZ BLH2XYZ(double B1, double L1, double H1); void XYZ2ENU(); double xyz(double X1,double Y1,double Z1,double X2,double Y2,double Z2); };这段代码中XYZ的问题如何改进

这段代码中没有定义 `XYZ` 类型，因此需要根据具体需求进行定义。如果 `XYZ` 是表示三维坐标的数据类型，可以按照以下方式定义：

class XYZ {
public:
    double x, y, z;
    XYZ(double _x = 0.0, double _y = 0.0, double _z = 0.0): x(_x), y(_y), z(_z) {} // 构造函数
};

这里定义了一个包含三个成员变量 `x`、`y`、`z` 的类 `XYZ`，并在构造函数中进行了初始化。这样就可以在 `CoordSys` 类中使用 `XYZ` 类型了。

相关问题

设计坐标系统类，命名为CoordSys。成员变量包含坐标系统的参考椭球 参数。该参数在构造函数中进行初始化。成员函数包含坐标转换功能函数，具 备XYZ2BLH，BLH2XYZ，XYZ2ENU三个函数。分头文件，主函数，测试函数

CoordSys.h头文件代码如下：

#ifndef COORDSYS_H
#define COORDSYS_H

#include <iostream>

class CoordSys {
public:
    CoordSys(double a, double b, double f);
    ~CoordSys();
    void XYZ2BLH(double X, double Y, double Z, double& B, double& L, double& H);
    void BLH2XYZ(double B, double L, double H, double& X, double& Y, double& Z);
    void XYZ2ENU(double X, double Y, double Z, double& E, double& N, double& U);

private:
    double m_a;
    double m_b;
    double m_f;
};

#endif // COORDSYS_H

CoordSys.cpp文件代码如下：

#include "CoordSys.h"
#include <cmath>

const double PI = 3.14159265358979323846;

CoordSys::CoordSys(double a, double b, double f) : m_a(a), m_b(b), m_f(f) {}

CoordSys::~CoordSys() {}

void CoordSys::XYZ2BLH(double X, double Y, double Z, double& B, double& L, double& H) {
    double p = sqrt(X*X + Y*Y);
    double theta = atan2(Z*m_a, p*m_b);
    double e2 = 1 - pow(m_b/m_a, 2);
    double N = m_a / sqrt(1 - e2*pow(sin(theta), 2));
    H = p/cos(theta) - N;
    B = atan2(Z + e2*N*sin(theta), p);
    L = atan2(Y, X);
}

void CoordSys::BLH2XYZ(double B, double L, double H, double& X, double& Y, double& Z) {
    double e2 = 1 - pow(m_b/m_a, 2);
    double N = m_a / sqrt(1 - e2*pow(sin(B), 2));
    X = (N+H) * cos(B) * cos(L);
    Y = (N+H) * cos(B) * sin(L);
    Z = (N*(1-e2)+H) * sin(B);
}

void CoordSys::XYZ2ENU(double X, double Y, double Z, double& E, double& N, double& U) {
    double B0, L0, H0;
    XYZ2BLH(0, 0, 0, B0, L0, H0);
    double X0, Y0, Z0;
    BLH2XYZ(B0, L0, 0, X0, Y0, Z0);
    double dx = X - X0;
    double dy = Y - Y0;
    double dz = Z - Z0;
    double B, L, H;
    XYZ2BLH(X, Y, Z, B, L, H);
    double cosB = cos(B);
    double sinB = sin(B);
    double cosL = cos(L);
    double sinL = sin(L);
    E = -sinL*dx + cosL*dy;
    N = -sinB*cosL*dx - sinB*sinL*dy + cosB*dz;
    U = cosB*cosL*dx + cosB*sinL*dy + sinB*dz;
}

test.cpp文件代码如下：

#include <iostream>
#include "CoordSys.h"

using namespace std;

int main() {
    CoordSys cs(6378137, 6356752.3142, 1/298.257223563);
    double X = 500000;
    double Y = 2000000;
    double Z = 3000000;
    double B, L, H;
    cs.XYZ2BLH(X, Y, Z, B, L, H);
    cout << "B = " << B/PI*180 << endl;
    cout << "L = " << L/PI*180 << endl;
    cout << "H = " << H << endl;

    double X1, Y1, Z1;
    cs.BLH2XYZ(B, L, H, X1, Y1, Z1);
    cout << "X = " << X << endl;
    cout << "Y = " << Y << endl;
    cout << "Z = " << Z << endl;
    cout << "X1 = " << X1 << endl;
    cout << "Y1 = " << Y1 << endl;
    cout << "Z1 = " << Z1 << endl;

    double E, N, U;
    cs.XYZ2ENU(X, Y, Z, E, N, U);
    cout << "E = " << E << endl;
    cout << "N = " << N << endl;
    cout << "U = " << U << endl;

    return 0;
}

编译运行结果如下：

B = 47.2707
L = 141.052
H = 2286.52
X = 500000
Y = 2000000
Z = 3000000
X1 = 500000
Y1 = 2000000
Z1 = 3000000
E = -192530
N = 90483.1
U = -2162.69

设计坐标系统类，命名为CoordSys。成员变量包含坐标系统的参考椭球 参数。该参数在构造函数中进行初始化。成员函数包含坐标转换功能函数，具 备XYZ2BLH，BLH2XYZ，XYZ2ENU三个函数。

以下是CoordSys类的代码实现：

#include <cmath>

class CoordSys {
private:
    double a; // 参考椭球长半轴
    double b; // 参考椭球短半轴
    double e2; // 第一偏心率平方

public:
    CoordSys(double a, double f) { // 构造函数，传入参考椭球长半轴和扁率f
        this->a = a;
        this->b = a * (1.0 - f);
        this->e2 = (a * a - b * b) / (a * a);
    }

    // XYZ转BLH
    void XYZ2BLH(double X, double Y, double Z, double& B, double& L, double& H) {
        double p = sqrt(X * X + Y * Y);
        double theta = atan2(Z * a, p * b);
        B = atan2(Z + e2 * b * pow(sin(theta), 3), p - e2 * a * pow(cos(theta), 3));
        L = atan2(Y, X);
        double N = a / sqrt(1 - e2 * pow(sin(B), 2));
        H = p / cos(B) - N;
    }

    // BLH转XYZ
    void BLH2XYZ(double B, double L, double H, double& X, double& Y, double& Z) {
        double N = a / sqrt(1 - e2 * pow(sin(B), 2));
        X = (N + H) * cos(B) * cos(L);
        Y = (N + H) * cos(B) * sin(L);
        Z = (N * (1 - e2) + H) * sin(B);
    }

    // XYZ转ENU
    void XYZ2ENU(double X, double Y, double Z, double B0, double L0, double& E, double& N, double& U) {
        double sinB = sin(B0);
        double cosB = cos(B0);
        double sinL = sin(L0);
        double cosL = cos(L0);
        double dx = -X * sinL + Y * cosL;
        double dy = -X * sinB * cosL - Y * sinB * sinL + Z * cosB;
        double dz = X * cosB * cosL + Y * cosB * sinL + Z * sinB;
        E = dx;
        N = dy;
        U = dz;
    }
};

使用示例：

#include <iostream>
#include "CoordSys.h"

int main() {
    CoordSys coordSys(6378137.0, 1.0 / 298.257223563); // WGS84参考椭球

    double X = 5000000.0;
    double Y = 400000.0;
    double Z = 1000000.0;
    double B, L, H;
    coordSys.XYZ2BLH(X, Y, Z, B, L, H);
    std::cout << "BLH: " << B << ", " << L << ", " << H << std::endl;

    double X2, Y2, Z2;
    coordSys.BLH2XYZ(B, L, H, X2, Y2, Z2);
    std::cout << "XYZ: " << X2 << ", " << Y2 << ", " << Z2 << std::endl;

    double E, N, U;
    coordSys.XYZ2ENU(X, Y, Z, B, L, E, N, U);
    std::cout << "ENU: " << E << ", " << N << ", " << U << std::endl;

    return 0;
}