Установка библиотеки

#include "simple_window.h"

#include "simple_window.cc"
using namespace std;
 
const float disc_radius=10;
const float first_terms=100;
 
class Complex_number{
    private:
        float real,im;
    public:
        Complex_number():real(0),im(0){};
        Complex_number(float r,float i):real(r),im(i){};
        Complex_number(const Complex_number &z){real=z.real;im=z.im;}
        Complex_number operator + (Complex_number &z){return Complex_number(z.real+real,z.im+im);}
        Complex_number operator - (Complex_number &z){return Complex_number(real-z.real,im-z.im);}
        Complex_number operator * (Complex_number &z){return Complex_number(z.real*real-z.im*im,z.real*im+real*z.im);}
        Complex_number operator = (Complex_number &z){return Complex_number(real=z.real,im=z.im);}
        Complex_number operator = (Complex_number z){return Complex_number(real=z.real,im=z.im);}
        float get_real(){return real;}
        float get_im(){return im;}
};
 
bool check(const float &x_min,const float &x_max,const float &y_min,const float &y_max,Complex_number point){
    Complex_number point_sequence;
    for(int i=0;i<first_terms;i++){
        if(point_sequence.get_real()*point_sequence.get_real()+point_sequence.get_im()*point_sequence.get_im()>disc_radius)
            return false;
        point_sequence=point_sequence*point_sequence+point; 
    }
    return true;    
}
 
int main(){
    SimpleWindow window("Mandelbrot set", 1024, 1024);
    float x_min=-2,x_max=1,y_min=-1.5,y_max=1.5;
    float steps=1024,step_x=(x_max-x_min)/steps,step_y=(y_max-y_min)/steps;
    for(int i=0;i<=steps;i++)
        for(int j=0;j<=steps;j++){
            if(check(x_min,x_max,y_min,y_max,Complex_number(x_min+step_x*j,y_min+step_y*i)))
                window.color(0,0,1.0);
            else
                window.color(0,0,0);
    }
        
    window.show();                  
 
    return 0;
}