有没有一个从点语言字符串生成png的C++函数？

#include <iostream>
#include <fstream>
#include <vector>
#include <png.h>

void createPngFromPoints(const std::vector<std::vector<int>>& points, const std::string& filename, int width, int height) {
    std::ofstream file(filename, std::ios::binary);
    if (!file) {
        std::cerr << "Failed to open file for writing: " << filename << std::endl;
        return;
    }

    png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
    if (!png) {
        std::cerr << "Failed to create PNG write struct" << std::endl;
        return;
    }

    png_infop info = png_create_info_struct(png);
    if (!info) {
        std::cerr << "Failed to create PNG info struct" << std::endl;
        png_destroy_write_struct(&png, nullptr);
        return;
    }

    png_init_io(png, file);

    png_set_IHDR(png, info, width, height, 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
                 PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);

    std::vector<png_bytep> rowPointers(height);
    for (int y = 0; y < height; ++y) {
        rowPointers[y] = (png_bytep)points[y].data();
    }

    png_set_rows(png, info, rowPointers.data());

    png_write_png(png, info, PNG_TRANSFORM_IDENTITY, nullptr);

    png_destroy_write_struct(&png, &info);

    file.close();
}

int main() {
    std::vector<std::vector<int>> points = {
        {255, 0, 0},  // Red
        {0, 255, 0},  // Green
        {0, 0, 255}   // Blue
    };

    createPngFromPoints(points, "output.png", 3, 1);

    return 0;
}