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发现的一个可以实现三次B样条的库，可以更加专注于项目的代码实现，提高编程效率。

#include <iostream>
#include <vector>
#include <boost/math/interpolators/cubic_b_spline.hpp>int main() {// 给定控制点std::vector<double> x = {1, 2, 3, 4, 5, 6, 7};std::vector<double> y = {1, 2, 3, 4, 5, 6, 7};// 创建三次B样条插值器double t0 = 0;  // 起始参数double dt = 1;  // 步长auto x_interpolator = boost::math::cubic_b_spline<double>(x.begin(), x.end(), t0, dt);auto y_interpolator = boost::math::cubic_b_spline<double>(y.begin(), y.end(), t0, dt);// 生成100个插值点int num_points = 100;std::vector<std::pair<double, double>> interpolated_points;for (int i = 0; i < num_points; ++i) {// 均匀取值double t = t0 + i * (static_cast<double>(x.size()-1) / (num_points - 1));double interpolated_x = x_interpolator(t);double interpolated_y = y_interpolator(t);interpolated_points.emplace_back(interpolated_x, interpolated_y);}// 输出插值点for (const auto& point : interpolated_points) {std::cout << "(" << point.first << ", " << point.second << ")\n";}return 0;
}