#include <graphics.h>
#include <cmath>

#define N 3
#define PI 3.1415


void poli(float valx,int points[],int n)
{
int i;
 int xc=0, yc=0;
    for(int i=0;i<5;i++){
            xc += points[2*i];
            yc += points[2*i+1];
    }
    xc/=5;yc/=5;

      double cosa = cos(PI/4), sina = sin(PI/4);
    for(int i=0;i<n;i++){
            double xi,yi;
            xi = points[2*i];
            yi = points[2*i+1];
            points[2*i]   = xc + (xi-xc)*cosa - (yi-yc)*sina;
            points[2*i+1] = yc + (xi-xc)*sina + (yi-yc)*cosa;
    }


}
void translatie(int valx,int valy,int points[],int n)
{
    int i;    for(i=0;i<5*2;i++)
{points[2*i]=points[2*i]+valx*100;
points[2*i+1]=points[2*i+1]+valy*100;

}
      for(int i=0;i<2*n;i++)
    setcolor(YELLOW);
    drawpoly(5,points);

}


int main()
{int n=5;
    initwindow(800,600);        // open a 400x300 graphics window

    int points[]={200,200,300,200,300,300,200,300,200,200},v[50];
    drawpoly(n,points);
int i;
int pct=n*2;
float valx=2;
float valy=2;


poli(valx,points,n);
translatie(valx,valy,points,n);
valy=0-valy;
translatie(valx,valy,points,n);
valx=0-valx;
translatie(valx,valy,points,n);

    while(!kbhit());           // wait for user to press a key

    closegraph();              // close graphics window
	return 0;
}