C++调用绘制天线水平方向图(在极坐标上)代码,极点根据世界坐标自定义修改
时间: 2024-03-04 21:52:47 浏览: 34
以下是一个简单的 C++ 代码示例,用于在极坐标上绘制水平方向图(天线):
```c++
#include <iostream>
#include <cmath>
#include <vector>
#include <fstream>
const double PI = 3.14159265358979323846;
// 极坐标点结构体
struct PolarPoint {
double r; // 半径
double theta; // 角度
};
// 将极坐标转换为笛卡尔坐标
struct CartesianPoint {
double x;
double y;
};
CartesianPoint polarToCartesian(PolarPoint p, CartesianPoint origin) {
// 将角度转换为弧度
double rad = p.theta * PI / 180.0;
// 计算笛卡尔坐标
CartesianPoint result;
result.x = p.r * cos(rad) + origin.x;
result.y = p.r * sin(rad) + origin.y;
return result;
}
// 绘制天线水平方向图
void drawAntenna(std::vector<PolarPoint> data, CartesianPoint origin, double maxRadius) {
// 打开输出文件
std::ofstream outFile("antenna.html");
outFile << "<html><head><title>Antenna Plot</title></head><body>" << std::endl;
// 绘制网格线
outFile << "<svg width=\"1000\" height=\"1000\">" << std::endl;
for (int i = 0; i <= 10; i++) {
double r = maxRadius * i / 10;
outFile << "<circle cx=\"" << origin.x << "\" cy=\"" << origin.y << "\" r=\"" << r << "\" stroke=\"gray\" stroke-width=\"1\" fill=\"none\" />" << std::endl;
}
for (int i = 0; i < 36; i++) {
double theta = i * 10;
CartesianPoint p1 = polarToCartesian({0, theta}, origin);
CartesianPoint p2 = polarToCartesian({maxRadius, theta}, origin);
outFile << "<line x1=\"" << p1.x << "\" y1=\"" << p1.y << "\" x2=\"" << p2.x << "\" y2=\"" << p2.y << "\" stroke=\"gray\" stroke-width=\"1\" fill=\"none\" />" << std::endl;
}
// 绘制数据点
outFile << "<path d=\"M ";
for (int i = 0; i < data.size(); i++) {
CartesianPoint p = polarToCartesian(data[i], origin);
outFile << p.x << "," << p.y << " ";
}
outFile << "\" stroke=\"blue\" stroke-width=\"2\" fill=\"none\" />" << std::endl;
// 关闭输出文件
outFile << "</svg></body></html>" << std::endl;
outFile.close();
}
int main() {
// 构造极坐标数据
std::vector<PolarPoint> data = {{10, 0}, {20, 30}, {30, 60}, {40, 90}, {50, 120}, {60, 150}, {70, 180}, {80, 210}, {90, 240}, {100, 270}, {90, 300}, {80, 330}};
// 定义极点
CartesianPoint origin = {500, 500};
// 定义最大半径
double maxRadius = 400;
// 绘制天线水平方向图
drawAntenna(data, origin, maxRadius);
return 0;
}
```
这段代码将生成一个名为 `antenna.html` 的 HTML 文件,其中包含一个 SVG 图形,显示了天线水平方向图。在 SVG 中,使用圆和直线绘制网格线,使用路径绘制数据点。`polarToCartesian` 函数将极坐标转换为笛卡尔坐标。