vertex_tut00.cpp

#include <SFML/Graphics.hpp>
#include <vector>

void pollEvent(sf::RenderWindow& window)
{
    sf::Event event;
    while (window.pollEvent(event))
    {
        if (event.type == sf::Event::Closed)
            window.close();
    }
}

sf::Transform transform(std::vector<sf::Vertex>& vec, float x, float y)
{
    for(auto& v : vec) { v.position = v.position * 100.f; }
    sf::Transform transform;
    transform.translate(x, y);
    return transform;
}

int main()
{
    sf::RenderWindow window(sf::VideoMode(200, 200), "SFML works!");

    // Quads
    std::vector<sf::Vertex> quad{
        {{0, 0}, {sf::Color::Blue}},
        {{1, 0}, {sf::Color::Green}},
        {{1, 1}, {sf::Color::Red}},
        {{0, 1}, {sf::Color::Yellow}},
    };

    sf::Transform quad_transform = transform(quad, 0 , 0);

    // Triangles
    std::vector<sf::Vertex> triangles{
        {{0, 0}, {sf::Color::Blue}},
        {{1, 0}, {sf::Color::Green}},
        {{0, 1}, {sf::Color::Red}},

        {{1, 0}, {sf::Color::Blue}},
        {{1, 1}, {sf::Color::Green}},
        {{0, 1}, {sf::Color::Red}},
    };

    sf::Transform triangles_transform = transform(triangles, 100, 0);

    // Triangles Fan
    std::vector<sf::Vertex> triangles_fan{
        {{0.5f, 0.5f}, {sf::Color::Black}}, // center for all

        {{0, 0}, {sf::Color::Green}},
        {{1, 0}, {sf::Color::Red}},

        {{1, 0}, {sf::Color::Green}},
        {{1, 1}, {sf::Color::Red}},

        {{1, 1}, {sf::Color::Green}},
        {{0, 1}, {sf::Color::Red}},

        {{0, 0}, {sf::Color::Green}},
        {{0, 1}, {sf::Color::Red}},
    };

    sf::Transform triangles_fan_transform = transform(triangles_fan, 0, 100);

    //Triangles Strip
    std::vector<sf::Vertex> triangles_strip{
        {{0, 0}, {sf::Color::Blue}},

        {{0, 1}, {sf::Color::Green}}, // shared vertices
        {{1, 0}, {sf::Color::Red}},
//        {{0, 1}, {sf::Color::Green}},
//        {{1, 0}, {sf::Color::Red}},

        {{1, 1}, {sf::Color::Blue}},
    };

    sf::Transform triangles_strip_transform = transform(triangles_strip, 100, 100);

    while (window.isOpen())
    {
        pollEvent(window);

        window.clear();
        window.draw(quad.data(), quad.size(), sf::Quads, quad_transform);
        window.draw(triangles.data(), triangles.size(), sf::Triangles, triangles_transform);
        window.draw(triangles_fan.data(), triangles_fan.size(), sf::TrianglesFan,triangles_fan_transform);
        window.draw(triangles_strip.data(), triangles_strip.size(), sf::TrianglesStrip, triangles_strip_transform);
        window.display();
    }
}