如何在 SFML 2.5 中调整 window 大小时保持 windows 纵横比？

Question

我想知道是否有办法在调整 window 大小时保持 windows 纵横比，就像在 photoshop 中缩放图层并按 shift 时一样。

Answer 1

我终于做到了我想做的事。我听 sf::Event::Resized and calling sf::Window::setSize then I adapted the code from this post 看起来像这样 :

// set screen size
float screenWidth = 800.f;
float screenHeight = 600.f;
// get the resized size
sf::Vector2u size = _window.getSize();
// setup my wanted aspect ratio
float  heightRatio = screenHeight / screenWidth;
float  widthRatio = screenWidth / screenHeight;
// adapt the resized window to my wanted aspect ratio
if (size.y * widthRatio <= size.x)
{
    size.x = size.y * widthRatio;
}
else if (size.x * heightRatio <= size.y)
{
    size.y = size.x * heightRatio;
}
// set the new size
_window.setSize(size);

如何在 SFML 2.5 中调整 window 大小时保持 windows 纵横比？

How to keep the windows aspect ratio while resizing the window in SFML 2.5?

c++

sfml