#include<iostream.h>

#include<graphics.h>

#include<conio.h>

#include<dos.h>

#include<math.h>

#include<stdlib.h>

class transform

{

private:

int a[10][2],i,x,option,temp,angle,tx,ty,fx,fy,sh,k,n,axis,y;

float sx,sy;

public:

void menu();

void input();

void output();

void translation();

void rotation();

void scaling();

void shearing();

void reflection();

};

void transform::menu()

{

cout<<"MENU";

cout<<"1.TRANSLATION\n";

cout<<"2.ROTATION\n";

cout<<"3.SCALING\n";

cout<<"4.SHEARING\n";

cout<<"5.REFLECTION\n";

cout<<"6.EXIT\n";

cout<<"Enter the choice:";

cin>>option;

switch(option)

{

case 1:

input();

translation();

break;

case 2:

input();

rotation();

break;

case 3:

input();

scaling();

break;

case 4:

input();

shearing();

break;

case 5:

input();

reflection();

break;

case 6:

exit(0);

break;

}

}

void transform::input()

{

cout<<"Enter the number of vertices:";

cin>>n;

for(i=0;i<n;i++)

{

cout<<"Enter the coordinates:";

cin>>a[i][0]>>a[i][1]>>a[i+1][0]>>a[i+1][1];

}

}

void transform::output()

{

cleardevice();

for(i=0;i<n;i++)

{

line(a[i][0],a[i][1],a[i+1][0],a[i+1][1]);

}

}

void transform::translation()

{

output();

cout<<"Enter the translation vertex tx,ty: \n";

cin>>tx>>ty;

for(i=0;i<=n;i++)

{

a[i][0]=a[i][0]+tx;

a[i][1]=a[i][1]+ty;

}

output();

delay(10);

menu();

}

void transform::rotation()

{

output();

cout<<"Enter the rotating angle:";

cin>>y;

cout<<"Enter the pivot point:";

cin>>fx>>fy;

k=(y*3.14)/180;

for(i=0;i<=n;i++)

{

a[i][0]=fx+(a[i][0]-fx)*cos(k)-(a[i][1]-fy)*sin(k);

a[i][1]=fy+(a[i][0]-fx)*sin(k)-(a[i][1]-fy)*cos(k);

}

output();

delay(10);

menu();

}

void transform::scaling()

{

output();

cout<<"Enter the scaling factor:\n";

cin>>sx>>sy;

cout<<"Enter the fixed point:";

cin>>fx>>fy;

for(i=0;i<=n;i++)

{

a[i][0]=a[i][0]*sx+fx*(1-sx);

a[i][1]=a[i][1]*sy+fy*(1-sy);

}

output();

delay(10);

menu();

}

void transform::shearing()

{

output();

cout<<"Enter the shear value:";

cin>>sh;

cout<<"Enter the fixed point:";

cin>>fx>>fy;

cout<<"Enter the axis for shearing if x-axis then '1' if y-axis then '0':";

cin>>axis;

for(i=0;i<n;i++)

{

if(axis==1)

{

a[i][0]=a[i][0]+sh*(a[i][1]-fy);

}

else

{

a[i][1]=a[i][1]+sh*(a[i][0]-fx);

}

}

output();

delay(10);

menu();

}

void transform::reflection()

{

output();

for(i=0;i<=n;i++)

{

temp=a[i][0];

a[i][0]=a[i][1];

a[i][1]=temp;

}

output();

delay(10);

menu();

}

void main()

{

int gd=DETECT,gm;

initgraph(&gd,&gm,"E:/tc/bgi");

transform t;

t.menu();

getch();

}