Color generator

color_generator.cpp

#include <iostream>
#include <vector>
#include <random>
#include <algorithm>
#include <cmath>

struct Color {
    int r, g, b;

    Color(int r, int g, int b) : r(r), g(g), b(b) {}

    double luminance() const {
        return 0.2126 * r + 0.7152 * g + 0.0722 * b;
    }

    double contrast(const Color& other) const {
        double l1 = luminance();
        double l2 = other.luminance();
        return (std::max(l1, l2) + 0.05) / (std::min(l1, l2) + 0.05);
    }
};

std::vector<Color> generate_palette(int num_colors, double min_contrast) {
    std::random_device rd;
    std::mt19937 gen(rd());
    std::uniform_int_distribution<int> dist(0, 255);

    std::vector<Color> palette;
    palette.emplace_back(dist(gen), dist(gen), dist(gen));

    while (palette.size() < num_colors) {
        Color new_color(dist(gen), dist(gen), dist(gen));
        bool valid = true;
        for (const Color& color : palette) {
            if (new_color.contrast(color) < min_contrast) {
                valid = false;
                break;
            }
        }
        if (valid) {
            palette.push_back(new_color);
        }
    }

    return palette;
}

int main() {
    std::vector<Color> palette = generate_palette(5, 4.5);
    for (const Color& color : palette) {
        std::cout << "RGB(" << color.r << ", " << color.g << ", " << color.b << ")" << std::endl;
    }
    return 0;
}