Rotate a shape around a point

[chhenning]

Hi all,

In SFML how would I rotate a shape around some point which is outside the shape's boundary, using transformations? I know how to use cos and sin but like to understand how to use transformation.

Here is one example:

    // Draw circle at center
    sf::CircleShape c;
    c.setFillColor(sf::Color::Red);
    c.setPosition(width / 2, height / 2 - 100);
    c.setRadius(50);
    c.setOrigin({50, 50});


    while(true)
    {
        window.clear(sf::Color::Black);

       
        // rotate around center of screen

        window.draw(c);

        window.display();
    }
 

Thanks all!

Christian

[Laurent]

sf::Transform transform;
transform.rotate(angle, center);
window.draw(c, transform);

[chhenning]

Thanks, that's exactly what I was looking for!