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Graphics / [solved] rotate a rectangle around its center (SFML 1.6)

« on: June 25, 2012, 10:01:42 pm »

Hi,
I am trying to rotate a rectangle around its center in SFML 1.6, but it is rotating around about the upper left corner of the window.

#include <SFML/Graphics.hpp>
int main()
{
    sf::RenderWindow App(sf::VideoMode(800, 600), "SFML rect rotation");
    float angle(0.f);
    while (App.IsOpened())
    {
        sf::Event Event;
        while (App.GetEvent(Event))
            if (Event.Type == sf::Event::Closed)
                App.Close();
        App.Clear();
        sf::Shape thing(sf::Shape::Rectangle(300, 300, 500, 500, sf::Color::Green));
        thing.SetCenter(100, 100);
        thing.Rotate(angle);
        angle += 0.1f;
        App.Draw(thing);
        App.Display();
    }
}

Any idea what I am doing wrong?
Regards,
Dobi

2

Graphics / [solved] Resizing the view with the window

« on: June 22, 2012, 11:41:02 am »

Hi,

I want my view to scale with my window, so that I actually see more of my scene when the window is maximized. My test code looks as follows:

#include <SFML/Graphics.hpp>
int main()
{
        sf::RenderWindow App(sf::VideoMode(640, 480), "Resize test");
        while (App.IsOpened())
        {
                sf::Event Event;
                while (App.GetEvent(Event))
                {
                        if (Event.Type == sf::Event::Closed)
                                App.Close();
                        if ((Event.Type == sf::Event::KeyPressed) && (Event.Key.Code == sf::Key::Escape))
                                App.Close();
                        if (Event.Type == sf::Event::Resized)
                                App.SetView(sf::View(sf::FloatRect(0.f, 0.f,
                                                static_cast<float>(App.GetWidth()),
                                                static_cast<float>(App.GetHeight()))));
                }
                App.Clear();
                App.Draw(sf::Shape::Rectangle(100.f, 100.f, 300.f, 300.f, sf::Color::Blue));
                App.Draw(sf::Shape::Rectangle(200.f, 200.f, 400.f, 400.f, sf::Color::Red));
                App.Display();
        }
        return EXIT_SUCCESS;
}

The problem is, that nothing is visible any more (all black) after the window's size is changed.
Is this some strange behaviour of my PC or am I just doing something wrong?
(I am using SFML 1.6 with Visual C++ 2010 express at the moment.)

Regards,
Dobi