how to use a vertexarray in SFML? - c++

Question

I'm trying to draw a texture on a sf::vertexarray
if I call the below code (without the texture), I can display fine a rectangle with red border. When I add the texture, I see nothing.
What am I doing wrong?
sf::VertexArray v_array;
v_array.append(sf::Vertex(sf::Vector2f(1,1) , sf::Color::Red));
v_array.append(sf::Vertex(sf::Vector2f(60,1) , sf::Color::Red));
v_array.append(sf::Vertex(sf::Vector2f(60,10 ), sf::Color::Red));
v_array.append(sf::Vertex(sf::Vector2f(1,10), sf::Color::Red));
v_array.append(sf::Vertex(sf::Vector2f(1,1), sf::Color::Red ));
v_array.setPrimitiveType(sf::LinesStrip);
sf::Texture text;
text.loadFromFile("../ressources/tileset_base.png");
sf::RenderStates rend(&text);
sf::RenderWindow App(sf::VideoMode(800, 600, 32), "SFML Graphics");
// Start game loop
while (App.isOpen())
{
// Process events
sf::Event Event;
while (App.pollEvent(Event))
{
// Close window : exit
if (Event.type == sf::Event::Closed)
App.close();
}
App.clear();
App.draw(v_array/*, rend*/);
App.display();
}

Answer 1

You need to give some texture coordinate to your vertices. You can use one of the following two constructors:
Vertex (const Vector2f &thePosition, const Vector2f &theTexCoords)
Vertex (const Vector2f &thePosition, const Color &theColor, const Vector2f &theTexCoords)
See documentation here
Small tip: if you use only one render state (e.g. only the texture) you can use this shortcut:
App.draw(v_array, &text);