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c++syntaxsfml

How is implemented this function foo.getSize().x

Recently I've start learning sfml graphics and I saw this kind of functions window.getSize().x or .y, my question is how can I write such a function, more exactly to use .x or .y on an object function?

Solution

  • Those functions return a vector object that have the variables x and y internally.

    Something kinda like this

    template<typename T>
struct Vec2
{
    T x, y;

    Vec2(T x, T y)
        : x(x), y(y)
};

class Window
{
public:
    Vec2<unsigned int> getSize()
    {
        return size;
    }
private:
    Vec2<unsigned int> size;
};

    This is only a simple example but it should show you how it works.