#include<iostream.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>

void main()
{
    clrscr();
    int gd=DETECT, gm;
    initgraph(&gd, &gm,"D:\TC\BGI");
double x1, x2, y1, y2, x3, x4, x5, x6, x7, x8, x9, y3, y4, y5, y6, y7, y8, y9, tx,ty, d;
    x1=50;
    y1=50;
    x2=100;
    y2=50;
    d=45;
    tx=50;
    ty=50;
    double tempx, tempy;
    tempx = x2;
    tempy = y2;
    line(x1,y1,x2,y2);
    circle(50,50,50);
    for(int z=0;z<7;z++)
    {
double p[3][3]={{cos(d),sin(d),0},{-sin(d),cos(d),0},{tx*(1-cos(d))+ty*sin(d),ty*(1-

cos(d))-tx*sin(d),1}};
        double m[3][3]={{x1,y1,1},{tempx,tempy,1},{0,0,1}};
        double M[3][3];
        for(int i=0; i<3 ;i++)
        {
            for(int j=0;j<3;j++)
            {
                M[i][j]=0;
                for(int k=0;k<3;k++)
                {
                    M[i][j]=M[i][j]+m[i][k]*p[k][j];
                }
            }
        }
        line(M[2][0],M[2][1],M[0][0],M[0][1]);
        tempx = M[0][0];
        tempy = M[0][1];
        switch(z)
        {
            case 0 : x3=tempx;
                 y3=tempy;
                 break;
            case 1 : x4=tempx;
                 y4=tempy;
                 break;
            case 2 : x5=tempx;
                 y5=tempy;
                 break;
            case 3 : x6=tempx;
                 y6=tempy;
                 break;
            case 4 : x7=tempx;
                 y7=tempy;
                 break;
            case 5 : x8=tempx;
                 y8=tempy;
                 break;
            case 6 : x9=tempx;
                 y9=tempy;
                 break;
        }
    }
    cout<<"n";
    for(int i=0;i<7;i++)
    {
        switch(1)
        {
            case 0 : cout<<x3<<y3<<"n";
                 break;
            case 1 : cout<<x4<<y4<<"n";
                 break;
            case 2 : cout<<x5<<y5<<"n";
                 break;
            case 3 : cout<<x6<<y6<<"n";
                 break;
            case 4 : cout<<x7<<y7<<"n";
                 break;
            case 5 : cout<<x8<<y8<<"n";
                 break;
            case 6 : cout<<x9<<y9<<"n";
                 break;

        }
    getch();
    closegraph();
    }
}