checking button click with SDL and boost geometry

sdl_with_boost_geometry.cpp

// sdl_opengl.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <SDL2/SDL.h>
#include <SDL2/SDL_surface.h>
#include <SDL2/SDL_render.h>
#include <SDL2/SDL_opengl.h>

#include <boost/geometry.hpp>
#include <boost/geometry/geometries/register/point.hpp>
#include <boost/geometry/geometries/register/box.hpp>


struct my_point
{
    int x, y;
};

struct my_box
{
    int left, top, right, bottom;
};
BOOST_GEOMETRY_REGISTER_POINT_2D(my_point, int, cs::cartesian, x, y)


BOOST_GEOMETRY_REGISTER_BOX_2D_4VALUES(my_box, my_point, left, top, right, bottom)

SDL_Rect Box_To_SDL_Rect(my_box& box) {
    SDL_Rect rect{};
    rect.x = box.left;
    rect.y = box.top;
    rect.w = box.right - box.left;
    rect.h = box.bottom - box.top;
    return rect;
}
my_box SDL_Rect_To_Box(SDL_Rect& rect) {
    my_box box;
    box.left = rect.x;
    box.top = rect.y;
    box.bottom = rect.h + box.top;
    box.right = rect.w + box.left;
  

    return box;
}

int main(int argc, char ** argv)
{
    SDL_Init(SDL_INIT_EVERYTHING);
    
    SDL_Window* window = SDL_CreateWindow("Home", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 500, 500, SDL_WINDOW_SHOWN);
    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
    SDL_Event event;

    my_box b = boost::geometry::make<my_box>(0, 0, 40, 40);
    SDL_Rect rect = Box_To_SDL_Rect(b);
    
    std::cout << std::boolalpha << boost::geometry::intersects(b, b);

    int posx, posy;
    
    while (true)
    {
        SDL_SetRenderDrawColor(renderer, 200, 100, 20, 200);
        SDL_RenderClear(renderer);
        SDL_SetRenderDrawColor(renderer, 20, 10, 150, 200);
        SDL_RenderDrawRect(renderer, &rect);


        
        if (SDL_PollEvent(&event) == 1) {
            switch (event.type)
            {
            case SDL_QUIT:
                goto QUIT;
            case SDL_MOUSEBUTTONDOWN:
                if (event.button.button == SDL_BUTTON_LEFT) {
                    SDL_GetMouseState(&posx, &posy);
                    std::cout << posx << " " << posy << "\n";

                    std::cout << std::boolalpha << boost::geometry::intersects(SDL_Rect_To_Box(rect), boost::geometry::make<my_box>(posx, posy, posx + 5, posy + 5));
                }
                else if (event.button.button == SDL_BUTTON_RIGHT) {
                    SDL_GetMouseState(&posx, &posy);
                    rect.x = posx;
                    rect.y = posy;
                }

            default:
                break;
            }
        }
        
        SDL_RenderPresent(renderer);
    }


QUIT:
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();

    return 0;
}