Computer Graphis File

                                  Department Of Computer Engineering

Practical -1

AIM:- Write a Program in C++ to Draw a Line.

#include<stdio.h>

#include<graphics.h>

#include<conio.h>

void main()

{

int gd=DETECT,gm;

intgraph(&gd, &gm,"c:\\TC\\BGI");

line(100,100,200,200);

getch();

}

      Output:-

                                      

Practical -2

AIM:- Write a Program to intersect two Lines.

#include<stdio.h>

#include<graphics.h>

#include<conio.h>

void main()

{

int gd=DETECT,gm;

initgraph(&gd, &gm,"C:\\TC\\BGI");

setcolor(7);

line(10,100,100,100);

line(30,50,30,200);

getch();

}

       Output:-

                             

Practical -3

AIM:- C++  Program To draw circle

#include<stdio.h>

#include<iostream.h>

#include<conio.h>

#include<dos.h>

void main()

{

int gd=DETECT,GM;

initgraph(&gd, &gm,"C:\\TC\\BGI");

Circle(30,40,60,50);

getch();

}

           Output:-

                                   

Practical -4

Aim:- C++ Program to draw a Trangle

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

#include<iostream.h>

#include<dos.h>

#inlude<math.h>

void main()

{

clrscr();

int gdrive=detect,gmode;

initgraph(&gdrive,&gmode,"c:\\tc\\bgi");

line(20,80,60,30);

line(60,30,100,80);

line(20,80,100,80);

getch();

}

               Output:-

                                            

Practical -5

Aim:-  C++  Program to darow a rectangle

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

#include<dos.h>

void main()

{

int gd=DETECT,gm;

initgraph(&gd,&gm,"C://TC//BGI");

rectangle(150,50,300,150);

getch();

}

          Output:-

                                           

Practical -06

AIM-write a program to print line using DDA algorithm

#include<stdio.h>

#include<iostream.h>

#include<conio.h>

#include<graphics.h>

#include<math.h>

void main()

{

int gd=DETECT,gm;

initgraph(&gd,&gm,"c:\\tc\\bgi");

int x,y,dy,dx;

int x1,y1,x2,y2,i,length;

cout<<"enter cordinate of starting point";

cin>>x1>>y1;

cout<<"enter the cordinate of end point";

cin>>x2>>y2;

dx=abs(x2-x1);

dy=abs(y2-y1);

if(dx>=dy)

length=dx;

else

length=dy;

dx=dx/length;

dy=dy/length;

x=x1;

y=y1;

i=1

while(i<=length)

{

putpixel(x,y,RED);

x=x+dx;

y=y+dy;

i++;

}

getch();

}

Practical -07

Aim:-Write a program in C++ to implement  translatoin

#include<stdio.h>

#include<iostream.h>

#include<conio.h>

#include<graphics.h>

#include<math.h>

void main()

{

int gd=DETECT,gm,x1,x2,y1,y2,tx,ty;

initgraph(&gd,&gm,"c:\\tc\\bgi");

cout <<"enter the first coordinate of a line";

cin>>x1>>y1;

cout<<"enter the second coordinate of line " ;

cin>>x2>>y2;

line(x1,y1,x2,y2);

cout<<"enter the translation vector";

cin>>tx>>ty;

setcolor(RED

x1=x1+tx;

y1=y1+ty;

x2=x2+tx;

y2=y2+ty;

line(x1,y1,x2,y2);

getch();

}

Output:-

                               

Practical -08

Aim-write a program to perform scaling

#include<stdio.h>

#include<iostream.h>

#include<conio.h>

#include<graphics.h>

#include<math.h>

void main()

{

int gd=DETECT,gm;

initgraph(&gd,&gm,"c:\\tc\\bgi");

float x1,y1,x2,y2,sx,sy;

cout <<"enter the first coordinate of a line";

cin>>x1>>y1;

cout<<"enter the second coordinate of line " ;

cin>>x2>>y2;

line(x1,y1,x2,y2);

cout<<"enter the scaling vector";

cin>>sx>>sy;

setcolor(RED);

x1=x1*sx;

y1=y1*sy;

x2=x2*sx;

y2=y2*sy;

line(x1,y1,x2,y2);

getch();

}

Output:-

             

             

Practical -09

Aim- Write a Program to perform rotation

#include<stdio.h>

#include<iostream.h>

#include<graphics.h>

#include<conio.h>

#include<math.h>

void main()

{

int gd=DETECT,gm;

initgraph(&gd,&gm,"c:\\tc\\bgi");

int x1,y1,x2,y2,x,y,xn,yn;

float r1,r2,r3,r4,th;

cout<<"enter the end points";

cin>>x1>>y1;

cout<<"enter the second points";

cin>>x2>>y2;

line(x1,y1,x2,y2);

cout<<"enter the angle";

cin>>th;

r1=cos((th*3.14)/180);

r2=sin((th*3.14)/180);

r3=-sin((th*3.14)/180);

r4=cos((th*3.14)/180);

xn=((x2*r1)-(y2*r2));

yn=((x2*r3)-(y2*r4));

line(x1,y1,xn,yn);

getch();

}