#include <iostream>




struct Point
{
    int x, y;
};

struct ScreenInfo
{
    int screenWidth;
    int screenHeight;

    int xMin, xMax, yMin, yMax;
};

Point mat2screen(const Point& mcoord, const ScreenInfo& info);


int main()
 {

        ScreenInfo info = { 800, 600, -5, 5, -4, 4 };
        Point pm ={ 0, 0 };
        Point pe;

        pe = mat2screen(pm, info);

       std::cout << pe.x << pe.y << std::endl;
    }


Point mat2screen(const Point& mcoord, const ScreenInfo& info)
{
    Point rv;  //pukt ukladu ekranowego
    rv.x = info.screenWidth / (info.xMax - info.xMin) * mcoord.x + info.screenWidth * info.xMin / (info.xMin - info.xMax);
    rv.y = info.screenHeight / (info.yMin - info.yMax) * mcoord.y + info.screenHeight * info.yMax / (info.yMax - info.yMin);

    return rv;
}