Write a program that applies any specifies sequence of transformations to a displayed object. The program is to be designed so that a user selects the transformation sequence and associated parameter from displayed menus, and the composite transformation is then calculated and used to transform the object. Display the original and transformed objects in different colours or different fill patterns.

 
 

#include< stdio.h >
#include< conio.h >
#include< graphics.h >
#include< dos.h >
#include < math.h >
#include< stdlib.h >
void menu();
void input();
void output();
void translation();
void rotation();
void scaling();
void shearing();
void reflection();
	int a[10][2],i,x,option,temp,angle,tx,ty,fx,fy,sh,k,n,axis,y;
	float sx,sy;

void menu()
{
		printf("menu\n");
		printf("1.Translation\n");
		printf("2.rotation\n");
		printf("3.scaling\n");
		printf("4.shearing\n");
		printf("5.reflection\n");
		printf("6.exit\n");
		printf("enter the choice:");
		scanf("%d",&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 input()
{
		printf("enter the number of vertices:" );
		scanf("%d",&n);
		for(i=0;i < n;i++)
		{
			printf("enter the coordinates:");
			scanf("%d%d%d%d",&a[i][0],&a[i][1],&a[i+1][0],&a[i+1][1]);
		}
}


void output()
{
		cleardevice();
		for(i=0;i < n;i++)
		{
			line(a[i][0],a[i][1],a[i+1][0],a[i+1][1]);
		}
}










	


void translation()
{
		output();
		printf("enter the tranformation vertex tx,ty:\n");
		scanf("%d%d",&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 rotation()
{
		output();
		printf("enter the rotating angle:");
		scanf("%d",&y);
		printf("enter the pivot point:");
		scanf("%d%d",&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 scaling()
{
		output();
		printf("enter the scaling factor\n");
		scanf("%f%f",&sx,&sy);
		printf("enter the fixed point:");
		scanf("%d%d",&fx,&fy);
		for(i=0;i < =n;i++)
		{
			a[i][0]=a[i][0]*sx+fy*(1-sx);
			a[i][1]=a[i][1]*sy+fy*(1-sy);
		}
		output();
		delay(10);
		menu();
}


void shearing()
{
		output();
		printf("enter the shear value:");
		scanf("%d",&sh);
		printf("enter the fixed point:");
		scanf("%d%d",&fx,&fy);
		printf("enter the axis for shearing if x-axis then 1 if y-axis the 0:");
		scanf("%d",&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 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,"c:\\tcplus\\bgi");
		menu();
		getch();
}