PENGANTAR GRAFIKA KOMPUTER

A. Latar Belakang

Perkembangan grafika komputer menuntut para pengembang sistem aplikasi grafika komputer

untuk dapat mengembangkan suatu informasi yang dilengkapi dengan visualisasi dan animasi,

agar dapat lebih mudah dipahami oleh pihak yang menggunakan sistem tersebut. Grafika

komputer telah menunjukkan kemajuan yang pesat dalam pengembangan berbagai aplikasi untuk

menghasilkan gambar.

Grafika komputer digunakan untuk menunjang berbagai bidang dengan teknologi grafika

berbasis komputer. Penggunaan grafika komputer telah lama digunakan dalam beberapa macam

aplikasi, diantaranya pendidikan, kedokteran, fisika, matematika, multimedia, dan lain-lain. Pada

saat ini grafika komputer sudah digunakan pada bidang sains, engineering, kedokteran, bisnis,

industri, pemerintahan, seni, hiburan, iklan, pendidikan, dan lain-lain. Oleh karena itu, sudah

semakin banyak pula bahasa pemrograman yang dilengkapi dengan tools/library pembuatan

grafik Salah satu tools/library pembuatan aplikasi grafik adalah OpenGL(Open Graphics

Library).

OpenGL(Open Graphics Library) adalah suatu spefikasi grafik yang low-level yang

menyediakan fungsi untuk pembuatan grafik primitif termasuk titik, garis, dan lingkaran.

OpenGL digunakan untuk mendefinisikan suatu objek, baik objek 2 dimensi maupun objek 3

dimensi. OpenGL juga merupakan suatu antarmuka pemrograman aplikasi (application

programming interface (API) yang tidak tergantung pada piranti dan platform yang digunakan,

sehingga OpenGL dapat berjalan pada sistem operasi Windows, UNIX dan sistem operasi

lainnya. OpenGL pada awalnya didesain untuk digunakan pada bahasa pemrograman C/C++,

namun dalam perkembangannya OpenGL dapat juga digunakan dalam bahasa pemrograman

yang lain seperti Java, Tcl, Ada, Visual Basic, Delphi, maupun Fortran. Namun OpenGL di-

package secara berbeda-beda sesuai dengan bahasa pemrograman yang digunakan.

B. Definisi Grafika Komputer

Menurut Suyoto (2003), grafika komputer (Computer Graphics) dapat diartikan sebagai

perangkat alat yang terdiri dari hardware dan software untuk membuat gambar, grafik atau citra

realistik untuk seni, game komputer, foto dan film animasi. Sistem grafika komputer dapat

dijalankan dengan komputer pribadi (Personal Computer) atau pada workstation. Grafika

komputer semakin lama semakin pesat perkembangannya, sehingga definisi dari Grafika

komputer dapat diartikan sebagai suatu studi tentang bagaimana menggambar (membuat grafik)

dengan menggunakan komputer dan manipulasinya (merubahsedikit/transformasi/animasi).

Pengertian Grafik berbeda dengan image/citra, image adalah gambar yang diperoleh dengan alat

pengambil gambar, seperti kamera, scanner, dll. Sedangkan Grafik adalah gambar yang dibuat

dengan cara tertentu, yaitu cara yang ada di grafika komputer. Grafik dan image keduanya

termasuk picture / gambar.

C. Aplikasi-Aplikasi Grafika Komputer

a. Computer-Aided Design (CAD)

CAD adalah alat bantu berbasis komputer yang digunakan dalam proses analisis dam desain,

khusunya untuk sistem arsitektural dan engineering. CAD banyak digunakan dalam mendesain

bagunan, mobil, pesawat, komputer, alat-alat elektronik, peralatan rumah tangga, dan berbagai

produk lainnya. Contoh aplikasinya: AutoCAD.

Computer-Aided Sofware Engineering (CASE)

CASE mirip dengan CAD tetapi digunakan dalam bidang sofware engineering. CASE digunakan

dalam memodelkan user requirement, pemodelan basisdata, workflow dalam proses bisnis,

struktur program, dan sebagainya. Contoh aplikasi: Rational Rose, SyBase Power Designer.

Virtual Reality

Virtual Reality adalah lingkungan virtual yang seakan-akan begitu nyata di mana user dapat

berinteraksi dengan objek-objek dalam suasana atau lingkungan 3 dimensi. Perangkat keras

khusus digunakan untuk memberikan efek pemadangan 3 dimensi dan memampukan user

beriteraksi dengan objek-objek yang ada dalam lingkungan. Contoh: aplikasi VR parachute

trainer yang digunakan oleh U.S. Navy untuk latihan terjun payung. Aplikasi ini dapat

memberikan keutungan berupa mengurangi resiko cedera selama latihan, mengurangi biaya

penerbangan, melatih perwira sebelum melakukan terjun payung sesungguhnya.

Visualisasi Data

Visualisasi Data adalah teknik-teknik membuat image, diagram, atau animasi untuk

mengkomunikasikan pesan. Visualisasi telah menjadi cara yang efektif dalam

mengkomunikasikan baik data atau ide abstrak maupun nyata sejak permulaan manusia. Contoh:

visualisasi dari struktur protein, strutur suatu website, visualisasi hasil data mining.

e. Pendidikan dan Pelatihan

Model-model yang dihasilkan melalui komputer yang tentunya menggunakan grafis biasa

digunakan sebagai alat bantu pendidikan. Model-model seperti proses-proses fisika dan kimia,

fungsi-fungsi psikologi, simulasi, dan sebagainya dapat membantu sesorang memahami

bagaimana operasi atau proses yang terjadi dalam suatu sistem. Contoh: simulasi rangkaian

elektronik untuk pembelajaran, salah satu aplikasinya Electroni workbench.

f. Computer Art

Computer art adalah penggunaan komputer grafis untuk menghasilkan karya-karya seni. Hasil

dapat berupa kartun, potret, foto, layout media cetak, logo, lukisan abstrak, desain interior atau

eksterior, dan lain sebagainya. Contoh: Adobe Photoshop, Corel Painter, GIMP.

g. Hiburan

Komputer grafis juga digunakan secara luas pada bidang entertainment khususnya pertelevisian,

motion pictures, animasi, video clips, dan sebagainya. Film-film animasi yagn berdar di pasaran

seperti Shrek, Monster Inc., anime-anime Jepang, menggunakan komputer grafis.

h. Video Game

Video game adalah permainan yang melibatkan interaksi dengan user interface untuk

menghasilkan umpan balik berupa visualisasi pada perangkat video. Aplikasi banyak beredar di

pasaran mulai yang sederhana 2 dimensi, seperti tetris, hingga yang rumit, 3 dimensi, dan

memerlukan resource banyak, seperti game sepakbola Winning Eleven. Dari yang yang

standalone hingga online network, seperti Ragnarok. Dari PC, console, hingga mobile devices.

i. Pengolahan Citra

Pengolahan citra berkaitan dengan teknik-teknik untuk modifikasi dna intepretasi citra,

meningkatkan kualitas citra, analisis citra, dan mengenali pola-pola visual yang ada dalam suatu

citra. Contoh: perbaikan citra sehingga menjadi lebih jelas.

Compute Vision adalah ilmu pengetahuan dan teknologi dari mesin-mesin yang dapat melihat.

Sebagai disiplin ilmu, computer vision berkaitan dengan teori untuk membangun sistem buatan

yang dapat menarik informasi dari citra-citra. Informasi tersebut kemudian dapat digunakan

sebagai input dalam mengambil keputusan atau tindakan. Data citra yang diambil dapat berupa

video, citra dari berbagai kamera, dan sebagainya.

k. Graphical User Interface

Graphical User Inteface adalah antarmuka grafis yang mempermudah interaksi manusia dengan

komputer dan alat-alat yang dikendalikan oleh komputer. GUI sudah sering kita lihat berupa

window-window yang digunakan pada sistem operasi Windows, Mac, maupun Linux.

#include<stdio.h>

#include<stdlib.h>

#include<windows.h>

#include<GL/gl.h>

#include <math.h>

#include <stdio.h>

#include <GL/glut.h>

#define dx 15

#define dy 25

void *currentfont;

int window;

GLfloat x[25];

GLfloat y[20];

GLint i,j,k;

int w,h;

void setFont(void *font)

{

currentfont=font;

}

void drawstring(float x,float y,float z,char *string)

{

char *c;

glRasterPos3f(x,y,z);

for(c=string;*c!='\0';c++)

{ glColor3f(0.0,0.0,0.0);

glutBitmapCharacter(currentfont,*c);

}

}

void text(void) // to draw the text in menu screen

{

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(1.0,1.0,1.0);

drawstring(95.0,455.0,1.0,"* * * * * * * * * S E L E C T I V E R E P E A T A R Q * * * * * * * * *");

glColor3f(1.0,1.0,1.0);

drawstring(210.0,405.0,1.0,"SEND WINDOW");

glColor3f(1.0,1.0,1.0);

drawstring(200.0,350.0,1.0," RECEIVE WINDOW");

glColor3f(1.0,1.0,1.0);

drawstring(210.0,295.0,1.0,"SAFE SENDING");

glColor3f(1.0,1.0,1.0);

drawstring(200.0,240.0,1.0,"PACKET CRASHING");

glColor3f(1.0,1.0,1.0);

drawstring(215.0,185.0,1.0," TIME OUT");

glColor3f(1.0,1.0,1.0);

drawstring(225.0,130.0,1.0," EXIT");

glFlush();

}

void draw() // TO DRAW POLYGON FOR DISPLAY MENUS

{

glClear(GL_COLOR_BUFFER_BIT);

glBegin(GL_POLYGON); // send window

glColor3f(0.7f,0.2f,0.2f);

glVertex2i(305,425);

glVertex2i(180,425);

glVertex2i(180,395);

glVertex2i(305,395);

glEnd();

glFlush();

glBegin(GL_POLYGON); // recieve window

glColor3f(0.7f,0.2f,0.2f);

glVertex2i(305,370);

glVertex2i(180,370);

glVertex2i(180,340);

glVertex2i(305,340);

glEnd();

glFlush();

glBegin(GL_POLYGON); // safe sending

glColor3f(0.7f,0.2f,0.2f);

glVertex2i(305,315);

glVertex2i(180,315);

glVertex2i(180,285);

glVertex2i(305,285);

glEnd();

glFlush();

glBegin(GL_POLYGON); // packet crashing

glColor3f(0.7f,0.2f,0.2f);

glVertex2i(305,260);

glVertex2i(180,260);

glVertex2i(180,230);

glVertex2i(305,230);

glEnd();

glFlush();

glBegin(GL_POLYGON); // time out

glColor3f(0.7f,0.2f,0.2f);

glVertex2i(305,205);

glVertex2i(180,205);

glVertex2i(180,175);

glVertex2i(305,175);

glEnd();

glFlush();

glBegin(GL_POLYGON); // exit

glColor3f(0.7f,0.2f,0.2f);

glVertex2i(305,150);

glVertex2i(180,150);

glVertex2i(180,120);

glVertex2i(305,120);

glEnd();

glFlush();

}

void myInit()

{

glClearColor(0.0,0.0,0.0,0.0);

glColor3f(0.0f,0.0f,0.0f);

glPointSize(5.0);

gluOrtho2D(0.0,500.0,0.0,500.0);

glMatrixMode(GL_PROJECTION);

glLoadIdentity();

setFont(GLUT_BITMAP_HELVETICA_18);

}

void computer() // to draw the sender and receiver computers

{

glColor3f(1.0f,1.0f,1.0f);

setFont(GLUT_BITMAP_HELVETICA_12);

drawstring(95.0,420.0,1.0,"SENDER");

glColor3f(1.0f,1.0f,1.0f);

drawstring(345.0,420.0,1.0,"RECEIVER");

glColor3f(0.7,0.2,0.0);//monitor

glBegin(GL_LINE_LOOP);

glVertex2f(85,380);

glVertex2f(85,440);

glVertex2f(150,440);

glVertex2f(150,380);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.0);//monitor

glBegin(GL_LINE_LOOP);

glVertex2f(87,382);

glVertex2f(87,438);

glVertex2f(148,438);

glVertex2f(148,382);

glEnd();

glFlush();

glColor3f(0.7,0.0,0.2);//vertical stand

glBegin(GL_LINES);

glVertex2f(105,380);

glVertex2f(105,375);

glVertex2f(129,380);

glVertex2f(129,375);

glEnd();

glFlush();

glColor3f(0.7,0.3,0.2); //horizontal stand

glBegin(GL_QUADS);

glVertex2f(98,370);

glVertex2f(98,375);

glVertex2f(138,375);

glVertex2f(138,370);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.2); //CPU

glBegin(GL_LINE_LOOP);

glVertex2f(80,350);

glVertex2f(80,370);

glVertex2f(155,370);

glVertex2f(155,350);

glEnd();

glFlush();

glColor3f(0.7,0.8,0.2); //CPU

glBegin(GL_QUADS);

glVertex2f(95,360);

glVertex2f(95,365);

glVertex2f(115,365);

glVertex2f(115,360);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.8); //CPU

glBegin(GL_QUADS);

glVertex2f(132,358);

glVertex2f(132,361);

glVertex2f(140,361);

glVertex2f(140,358);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.2);//keyboard outline

glBegin(GL_LINE_LOOP);

glVertex2f(77,325);

glVertex2f(87,350);

glVertex2f(148,350);

glVertex2f(158,325);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.2);//keyboard outline

glBegin(GL_POLYGON);

glVertex2f(77,325);

glVertex2f(158,325);

glVertex2f(158,322);

glVertex2f(77,322);

glEnd();

glFlush();

glColor3f(0.7,0.0,0.2); //horizontal lines of keyboard

glBegin(GL_LINES);

glVertex2f(85,345);

glVertex2f(150,345);

glVertex2f(83,340);

glVertex2f(152,340);

glVertex2f(81,335);

glVertex2f(154,335);

glVertex2f(79,330);

glVertex2f(156,330);

glVertex2f(77,325);

glVertex2f(158,325);

glEnd();

glFlush();

glColor3f(0.7,0.0,0.2); //vertical lines of keyboard

glBegin(GL_LINES);

glVertex2f(89,322);

glVertex2f(97,350);

glVertex2f(103,322);

glVertex2f(107,350);

glVertex2f(117,322);

glVertex2f(117,350);

glVertex2f(131,322);

glVertex2f(127,350);

glVertex2f(145,322);

glVertex2f(137,350);

glEnd();

glFlush();

// COMPUTER AT RECEIVER

glColor3f(0.7,0.2,0.0);//monitior

glBegin(GL_LINE_LOOP);

glVertex2f(335,380);

glVertex2f(335,440);

glVertex2f(400,440);

glVertex2f(400,380);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.0);//monitior

glBegin(GL_LINE_LOOP);

glVertex2f(337,382);

glVertex2f(337,438);

glVertex2f(398,438);

glVertex2f(398,382);

glEnd();

glFlush();

glColor3f(0.7,0.0,0.2);//ver

glBegin(GL_LINES);

glVertex2f(355,380);

glVertex2f(355,375);

glVertex2f(379,380);

glVertex2f(379,375);

glEnd();

glFlush();

glColor3f(0.7,0.3,0.2);//hor

glBegin(GL_QUADS);

glVertex2f(348,370);

glVertex2f(348,375);

glVertex2f(388,375);

glVertex2f(388,370);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.2);//CPU

glBegin(GL_LINE_LOOP);

glVertex2f(330,350);

glVertex2f(330,370);

glVertex2f(405,370);

glVertex2f(405,350);

glEnd();

glFlush();

glColor3f(0.7,0.8,0.2); //CPU

glBegin(GL_QUADS);

glVertex2f(345,360);

glVertex2f(345,365);

glVertex2f(365,365);

glVertex2f(365,360);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.8); //CPU

glBegin(GL_QUADS);

glVertex2f(382,358);

glVertex2f(382,361);

glVertex2f(390,361);

glVertex2f(390,358);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.2);//keyboard

glBegin(GL_LINE_LOOP);

glVertex2f(327,322);

glVertex2f(337,350);

glVertex2f(398,350);

glVertex2f(408,322);

glEnd();

glFlush();

glColor3f(0.7,0.2,0.2);//keyboard

glBegin(GL_POLYGON);

glVertex2f(327,325);

glVertex2f(408,325);

glVertex2f(408,322);

glVertex2f(327,322);

glEnd();

glFlush();

glColor3f(0.7,0.0,0.2); //horizontal lines of keyboard

glBegin(GL_LINES);

glVertex2f(335,345);

glVertex2f(400,345);

glVertex2f(333,340);

glVertex2f(402,340);

glVertex2f(331,335);

glVertex2f(404,335);

glVertex2f(329,330);

glVertex2f(406,330);

glVertex2f(327,325);

glVertex2f(408,325);

glEnd();

glFlush();

glColor3f(0.7,0.0,0.2); //vertical lines of keyboard

glBegin(GL_LINES);

glVertex2f(339,322);

glVertex2f(347,350);

glVertex2f(353,322);

glVertex2f(357,350);

glVertex2f(367,322);

glVertex2f(367,350);

glVertex2f(381,322);

glVertex2f(377,350);

glVertex2f(395,322);

glVertex2f(387,350);

glEnd();

glFlush();

glColor3f(0.3,0.6,0.8);//connectin wire

glBegin(GL_LINES);

glVertex2f(155,360);

glVertex2f(330,360);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

glBegin(GL_POLYGON);

glVertex2f(410,425);

glVertex2f(410,430);

glVertex2f(425,430);

glVertex2f(425,425);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(432.0,425.5,1.0,"DATA FRAMES");

glFlush();

glColor3f(0.0,1.0,1.0);

glBegin(GL_POLYGON);

glVertex2f(410,410);

glVertex2f(410,415);

glVertex2f(420,415);

glVertex2f(420,410);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

drawstring(432.0,410.5,1.0,"ACK ");

glFlush();

glColor3f(1.0,1.0,0.0);

glBegin(GL_POLYGON);

glVertex2f(410,395);

glVertex2f(410,400);

glVertex2f(420,400);

glVertex2f(420,395);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

drawstring(432.0,395.5,1.0,"NAK");

glFlush();

}

void slide(GLint maxx,GLint maxy,GLfloat x0,GLfloat y0) // TO DRAW WINDOWS (Rectangular Mesh)

{

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

x[i]=x0+i*dx;

for(j=0;j<maxy;j++)

y[j]=y0+j*dy;

for(i=0;i<maxx-1;i++)

for(j=0;j<maxy-1;j++)

{

glBegin(GL_LINE_LOOP);

glVertex2f(x[i],y[j]);

glVertex2f(x[i],y[j+1]);

glVertex2f(x[i+1],y[j+1]);

glVertex2f(x[i+1],y[j]);

glEnd();

glFlush();

}

}

void delay()

{

j=28000;

while(j!=0)

{

j--;

i=28000;

while(i!=0)

{

i--;

}

}

}

void timer0()

{

glColor3f(1.4,1.9,0.78);

glBegin(GL_LINE_LOOP); // timer for frame 0

glVertex2f(100,120);

glVertex2f(100,130);

glVertex2f(225,130);

glVertex2f(225,120);

glEnd();

glFlush();

}

void timer1()

{

glColor3f(1.4,1.9,0.78);

glBegin(GL_LINE_LOOP); // timer for frame 1

glVertex2f(100,100);

glVertex2f(100,110);

glVertex2f(225,110);

glVertex2f(225,100);

glEnd();

glFlush();

}

void timer2()

{

glColor3f(1.4,1.9,0.78);

glBegin(GL_LINE_LOOP); // timer for frame 2

glVertex2f(100,80);

glVertex2f(100,90);

glVertex2f(225,90);

glVertex2f(225,80);

glEnd();

glFlush();

}

void timer3()

{

glColor3f(1.4,1.9,0.78);

glBegin(GL_LINE_LOOP); // timer for frame 3

glVertex2f(360,120);

glVertex2f(360,130);

glVertex2f(485,130);

glVertex2f(485,120);

glEnd();

glFlush();

}

void timer4()

{

glColor3f(1.4,1.9,0.78);

glBegin(GL_LINE_LOOP); // timer for frame 4

glVertex2f(360,100);

glVertex2f(360,110);

glVertex2f(485,110);

glVertex2f(485,100);

glEnd();

glFlush();

}

void timer(float k,float l,float m,float n)

{

glColor3f(1.4,1.9,0.78);

glBegin(GL_POLYGON); // to call timer functions

glVertex2f(l,m);

glVertex2f(l,n);

glVertex2f(l+k,n);

glVertex2f(l+k,m);

glEnd();

glFlush();

}

void title()// to draw the starting screen

{

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(1.0,1.0,1.0);

drawstring(20.0,435.0,1.0,"* * G R A P H I C A L I L L U S T R A T I O N OF S E L E C T I V E R E P E A T A R Q P R O T O C O L * *");

glColor3f(1.0,1.0,1.0);

drawstring(210.0,365.0,1.0,"SUBMITTED BY");

glColor3f(0.0,1.0,1.0);

drawstring(180.0,340.0,1.0," Name USN");

glColor3f(0.0,1.0,1.0);

drawstring(180.0,320.0,1.0," Name USN");

glColor3f(1.0,1.0,1.0);

drawstring(190.0,260.0,1.0,"UNDER THE GUIDANCE OF");

glColor3f(0.0,1.0,1.0);

drawstring(70.0,230.0,1.0," Guide ");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0,1.0,1.0);

drawstring(190.0,230.0,1.0," Guide Degrees .");

glColor3f(0.0,1.0,1.0);

drawstring(70.0,215.0,1.0," Lecturer, Dept of CS&E");

glColor3f(0.0,1.0,1.0);

drawstring(70.0,200.0,1.0," College");

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(0.0,1.0,1.0);

drawstring(280.0,230.0,1.0," same");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0,1.0,1.0);

drawstring(360.0,230.0,1.0," same,");

glColor3f(0.0,1.0,1.0);

drawstring(285.0,215.0,1.0," same");

glColor3f(0.0,1.0,1.0);

drawstring(285.0,200.0,1.0," same above");

glFlush();

}

void move1() //MOVEMENT OF FRAME 0 (in safe sending)

{

GLint i,j, temp=3;

glColor3f(1.0,0.8,0.4);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(30.0,125.0,1.0," Timer 0");

timer0();

float k=0;

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 0 sending ...........");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(55,265-j);glVertex2i(55,280-j);glVertex2i(60,280-j);glVertex2i(60,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(55,265-j);glVertex2i(55,280-j);glVertex2i(60,280-j);glVertex2i(60,265-j);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //movement of data packet from top to down

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(55,238-j);glVertex2i(55,253-j);glVertex2i(60,253-j);glVertex2i(60,238-j);

glEnd();

glFlush();

k+=0.05;

timer(k,102.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(55,238-j);glVertex2i(55,253-j);glVertex2i(60,253-j);glVertex2i(60,238-j);

glEnd();

glFlush();

}

for(i=0;i<231;i=i+temp) //movement of data packet sidewise

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(60+i,178);glVertex2i(60+i,183);glVertex2i(75+i,183);glVertex2i(75+i,178);

glEnd();

glFlush();

k+=0.05;

timer(k,102.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(60+i,178);glVertex2i(60+i,183);glVertex2i(75+i,183);glVertex2i(75+i,178);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //to move the packet from bottom to top

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(305,178+j);glVertex2i(305,193+j);glVertex2i(310,193+j);glVertex2i(310,178+j);

glEnd();

glFlush();

k+=0.05;

timer(k,102.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(305,178+j);glVertex2i(305,193+j);glVertex2i(310,193+j);glVertex2i(310,178+j);

glEnd();

glFlush();

}

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 0 sending ...........");

glColor3f(1.0,1.0,0.0);

drawstring(160.0,370.0,1.0,"FRAME 0 sent");

// delay();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0,0.0,0.0);

drawstring(160.0,370.0,1.0,"FRAME 0 sent");

}

void move2() // SIMULTANEOUS MOVEMENT OF ACK 1 AND FRAME 1(in safe sending)

{

GLint i,j, temp=3;

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(1.0,0.8,0.4);

drawstring(30.0,105.0,1.0," Timer 1");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 1 sending ...........");

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK1 ");

timer1();

float k=0,l=0;

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(320,265-j);glVertex2i(320,275-j);glVertex2i(325,275-j);glVertex2i(325,265-j);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70,265-j);glVertex2i(70,280-j);glVertex2i(75,280-j);glVertex2i(75,265-j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70,265-j);glVertex2i(70,280-j);glVertex2i(75,280-j);glVertex2i(75,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(320,265-j);glVertex2i(320,275-j);glVertex2i(325,275-j);glVertex2i(325,265-j);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //movement of data packet from top to down

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(320,228-j);glVertex2i(320,238-j);glVertex2i(325,238-j);glVertex2i(325,228-j);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70,238-j);glVertex2i(70,253-j);glVertex2i(75,253-j);glVertex2i(75,238-j);

glEnd();

glFlush();

k+=0.05;

timer(k,156.5,122,128);

timer(k,102.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(320,228-j);glVertex2i(320,238-j);glVertex2i(325,238-j);glVertex2i(325,228-j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70,238-j);glVertex2i(70,253-j);glVertex2i(75,253-j);glVertex2i(75,238-j);

glEnd();

glFlush();

}

for(i=0;i<235;i=i+temp) //movement of data packet sidewise

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(310-i,168);glVertex2i(310-i,173);glVertex2i(320-i,173);glVertex2i(320-i,168);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70+i,178);glVertex2i(70+i,183);glVertex2i(85+i,183);glVertex2i(85+i,178);

glEnd();

glFlush();

k+=0.05;

timer(k,156.5,122,128);

timer(k,102.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(310-i,168);glVertex2i(310-i,173);glVertex2i(320-i,173);glVertex2i(320-i,168);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70+i,178);glVertex2i(70+i,183);glVertex2i(85+i,183);glVertex2i(85+i,178);

glEnd();

glFlush();

}

for(j=0;j<63;j=j+temp) //to move the packet from bottom to top

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(70,168+j);glVertex2i(70,178+j);glVertex2i(75,178+j);glVertex2i(75,168+j);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(320,178+j);glVertex2i(320,193+j);glVertex2i(325,193+j);glVertex2i(325,178+j);

glEnd();

glFlush();

k+=0.05;

timer(k,156.5,122,128);

timer(k,102.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70,168+j);glVertex2i(70,178+j);glVertex2i(75,178+j);glVertex2i(75,168+j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(320,178+j);glVertex2i(320,193+j);glVertex2i(325,193+j);glVertex2i(325,178+j);

glEnd();

glFlush();

}

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 1 sending ...........");

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK1 ");

glColor3f(1.0,1.0,0.0);

drawstring(160.0,370.0,1.0,"FRAME 1 sent ");

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"ACK1 Recieved ");

glColor3f(0.0,0.0,0.0);

glBegin(GL_POLYGON);

glVertex2f(10,115);

glVertex2f(10,135);

glVertex2f(230,135);

glVertex2f(230,115);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(1.0,0.8,0.4);

drawstring(80.0,125.0,1.0," Frame 0 sent successfully");

// delay();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0,0.0,0.0);

drawstring(160.0,370.0,1.0,"FRAME 1 sent ");

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"ACK1 Recieved ");

}

void move3() // MOVEMENT OF FRAME 2 ( FRAME 2 lost in packet crashing)

{

GLint i,j, temp=3;

float k=0;

timer2();

glColor3f(1.0,0.8,0.4);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(30.0,85.0,1.0,"Timer 2");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 sending ...........");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85,265-j);glVertex2i(85,280-j);glVertex2i(90,280-j);glVertex2i(90,265-j);

glEnd();

glFlush();

k+=0.05;

timer(k,102.5,82,88);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85,265-j);glVertex2i(85,280-j);glVertex2i(90,280-j);glVertex2i(90,265-j);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //movement of data packet from top to down

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85,238-j);glVertex2i(85,253-j);glVertex2i(90,253-j);glVertex2i(90,238-j);

glEnd();

glFlush();

k+=0.05;

timer(k,102.5,82,88);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85,238-j);glVertex2i(85,253-j);glVertex2i(90,253-j);glVertex2i(90,238-j);

glEnd();

glFlush();

}

for(i=0;i<167;i=i+temp) //movement of data packet sidewise

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85+i,178);glVertex2i(85+i,183);glVertex2i(100+i,183);glVertex2i(100+i,178);

glEnd();

glFlush();

k+=0.05;

timer(k,102.5,82,88);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85+i,178);glVertex2i(85+i,183);glVertex2i(100+i,183);glVertex2i(100+i,178);

glEnd();

glFlush();

}

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 sending ...........");

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,365.0,1.0,"FRAME 2 lost");

glColor3f(1.0f,1.0f,0.0f);

drawstring(280.0,163.0,1.0,"FRAME 2 lost");

// delay();

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,365.0,1.0,"FRAME 2 lost")

}

void move4() // RESENDING OF FRAME 2 (in packet crashing)

{

GLint i,j, temp=3;

timer2();

timer4();

timer3();

float k=0;

float p=0;

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,1.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 Resending ...........");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85,265-j);glVertex2i(85,280-j);glVertex2i(90,280-j);glVertex2i(90,265-j);

glEnd();

glFlush();

k+=0.03;

timer(k,102.5,82,88);

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(85,265-j);glVertex2i(85,280-j);glVertex2i(90,280-j);glVertex2i(90,265-j);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //movement of data packet from top to down

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85,238-j);glVertex2i(85,253-j);glVertex2i(90,253-j);glVertex2i(90,238-j);

glEnd();

glFlush();

k+=0.03;

timer(k,102.5,82,88);

timer(k,396.5,102,108);

p+=0.01;

timer(p,430.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85,238-j);glVertex2i(85,253-j);glVertex2i(90,253-j);glVertex2i(90,238-j);

glEnd();

glFlush();

}

for(i=0;i<231;i=i+temp) //movement of data packet sidewise

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85+i,178);glVertex2i(85+i,183);glVertex2i(100+i,183);glVertex2i(100+i,178);

glEnd();

glFlush();

k+=0.03;

timer(k,102.5,82,88);

timer(k,396.5,102,108);

p+=0.01;

timer(p,430.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85+i,178);glVertex2i(85+i,183);glVertex2i(100+i,183);glVertex2i(100+i,178);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //to move the packet from bottom to top

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(335,178+j);glVertex2i(335,193+j);glVertex2i(340,193+j);glVertex2i(340,178+j);

glEnd();

glFlush();

k+=0.03;

timer(k,102.5,82,88);

timer(k,396.5,102,108);

p+=0.01;

timer(p,430.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(335,178+j);glVertex2i(335,193+j);glVertex2i(340,193+j);glVertex2i(340,178+j);

glEnd();

glFlush();

}

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 Resending ...........");

glColor3f(1.0f,1.0f,1.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 sent");

// delay();

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 sent");

}

void move5() // sending of frame 3

{

GLint i,j, temp=3;

timer2();

timer3();

float k=0,l=0;

glColor3f(1.0,0.8,0.4);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(320.0,125.0,1.0,"Timer 3");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 3 sending ...........");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(100,265-j);glVertex2i(100,280-j);glVertex2i(105,280-j);glVertex2i(105,265-j);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,82,88);

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(100,265-j);glVertex2i(100,280-j);glVertex2i(105,280-j);glVertex2i(105,265-j);

glEnd();

glFlush();

}

for(j=0;j<50;j=j+temp) //movement of data packet from top to down

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(100,238-j);glVertex2i(100,253-j);glVertex2i(105,253-j);glVertex2i(105,238-j);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,82,88);

timer(k,362.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(100,238-j);glVertex2i(100,253-j);glVertex2i(105,253-j);glVertex2i(105,238-j);

glEnd();

glFlush();

}

for(i=0;i<235;i=i+temp) //movement of data packet sidewise

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(100+i,183);glVertex2i(100+i,188);glVertex2i(115+i,188);glVertex2i(115+i,183);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,82,88);

timer(k,362.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(100+i,183);glVertex2i(100+i,188);glVertex2i(115+i,188);glVertex2i(115+i,183);

glEnd();

glFlush();

}

for(j=0;j<55;j=j+temp) //to move the packet from bottom to top

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(350,183+j);glVertex2i(350,198+j);glVertex2i(355,198+j);glVertex2i(355,183+j);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,82,88);

timer(k,362.5,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(350,183+j);glVertex2i(350,198+j);glVertex2i(355,198+j);glVertex2i(355,183+j);

glEnd();

glFlush();

}

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 3 sending ...........");

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending NAK2 ");

glColor3f(1.0,1.0,0.0);

drawstring(160.0,370.0,1.0,"FRAME 3 sent ");

// delay();

glColor3f(0.0,0.0,0.0);

drawstring(160.0,370.0,1.0,"FRAME 3 sent ");

}

void move6() // RESENDING OF FRAME 1(in packet crashing)

{

GLint i,j, temp=3;

glBegin(GL_LINE_LOOP);

glColor3f(0,0,0);

glVertex2f(100,120);

glVertex2f(225,120);

glVertex2f(225,130);

glVertex2f(100,130);

glEnd();

glFlush();

glBegin(GL_POLYGON);

glColor3f(0,0,0);

glVertex2f(100,120);

glVertex2f(225,120);

glVertex2f(225,130);

glVertex2f(100,130);

glEnd();

glFlush();

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70,265-j);glVertex2i(70,280-j);glVertex2i(75,280-j);glVertex2i(75,265-j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70,265-j);glVertex2i(70,280-j);glVertex2i(75,280-j);glVertex2i(75,265-j);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //movement of data packet from top to down

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70,238-j);glVertex2i(70,253-j);glVertex2i(75,253-j);glVertex2i(75,238-j);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,365.0,1.0,"FRAME 1 sending .....");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70,238-j);glVertex2i(70,253-j);glVertex2i(75,253-j);glVertex2i(75,238-j);

glEnd();

glFlush();

}

for(i=0;i<231;i=i+temp) //movement of data packet sidewise

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70+i,178);glVertex2i(70+i,183);glVertex2i(85+i,183);glVertex2i(85+i,178);

glEnd();

glFlush();

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,365.0,1.0,"FRAME 1 resending ...................");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70+i,178);glVertex2i(70+i,183);glVertex2i(85+i,183);glVertex2i(85+i,178);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //to move the packet from bottom to top

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(320,178+j);glVertex2i(320,193+j);glVertex2i(325,193+j);glVertex2i(325,178+j);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,365.0,1.0,"FRAME 0 sending ...............................");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(320,178+j);glVertex2i(320,193+j);glVertex2i(325,193+j);glVertex2i(325,178+j);

glEnd();

glFlush();

}

glColor3f(1.0,1.0,1.0);

drawstring(70,268.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(85,268.0,0.0,"2");

glColor3f(1.0,1.0,1.0);

drawstring(100,268.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(320,268.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(365,268.0,0.0,"4");

}

void move7() // MOVEMENT OF ACK 4 (in packet crashing)

{

GLint i,j, temp=3;

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(365,265-j);glVertex2i(365,275-j);glVertex2i(370,275-j);glVertex2i(370,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(365,265-j);glVertex2i(365,275-j);glVertex2i(370,275-j);glVertex2i(370,265-j);

glEnd();

glFlush();

}

for(j=0;j<50;j=j+temp) //movement of data packet from top to down

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(365,228-j);glVertex2i(365,238-j);glVertex2i(370,238-j);glVertex2i(370,228-j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(365,228-j);glVertex2i(365,238-j);glVertex2i(370,238-j);glVertex2i(370,228-j);

glEnd();

glFlush();

}

for(i=0;i<235;i=i+temp) //movement of data packet sidewise

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(355-i,178);glVertex2i(355-i,183);glVertex2i(365-i,183);glVertex2i(365-i,178);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,365.0,1.0,"FRAME 1 resending ...................");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(355-i,178);glVertex2i(355-i,183);glVertex2i(365-i,183);glVertex2i(365-i,178);

glEnd();

glFlush();

}

for(j=0;j<55;j=j+temp) //to move the packet from bottom to top

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(115,178+j);glVertex2i(115,188+j);glVertex2i(120,188+j);glVertex2i(120,178+j);

glEnd();

glFlush();

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,365.0,1.0,"FRAME 0 sending ...............................");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(115,178+j);glVertex2i(115,188+j);glVertex2i(120,188+j);glVertex2i(120,178+j);

glEnd();

glFlush();

}

glColor3f(1.0,1.0,1.0);

drawstring(365,268.0,0.0,"4");

}

void move8() // MOVEMENT OF ACK 4 (in packet crashing)

{

GLint i,j, temp=3;

float k=0;

timer1();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK2 ");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(335,265-j);glVertex2i(335,275-j);glVertex2i(340,275-j);glVertex2i(340,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(335,265-j);glVertex2i(335,275-j);glVertex2i(340,275-j);glVertex2i(340,265-j);

glEnd();

glFlush();

}

for(j=0;j<50;j=j+temp) //movement of data packet from top to down

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(335,228-j);glVertex2i(335,238-j);glVertex2i(340,238-j);glVertex2i(340,228-j);

glEnd();

glFlush();

k+=0.05;

timer(k,136.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(335,228-j);glVertex2i(335,238-j);glVertex2i(340,238-j);glVertex2i(340,228-j);

glEnd();

glFlush();

}

for(i=0;i<235;i=i+temp) //movement of data packet sidewise

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(325-i,178);glVertex2i(325-i,183);glVertex2i(335-i,183);glVertex2i(335-i,178);

glEnd();

glFlush();

k+=0.05;

timer(k,136.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(325-i,178);glVertex2i(325-i,183);glVertex2i(335-i,183);glVertex2i(335-i,178);

glEnd();

glFlush();

}

for(j=0;j<55;j=j+temp) //to move the packet from bottom to top

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(85,178+j);glVertex2i(85,188+j);glVertex2i(90,188+j);glVertex2i(90,178+j);

glEnd();

glFlush();

k+=0.05;

timer(k,136.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85,178+j);glVertex2i(85,188+j);glVertex2i(90,188+j);glVertex2i(90,178+j);

glEnd();

glFlush();

}

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK2 ");

glColor3f(0.0,0.0,0.0);

glBegin(GL_POLYGON);

glVertex2f(10,95);

glVertex2f(10,115);

glVertex2f(230,115);

glVertex2f(230,95);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(1.0,0.8,0.4);

drawstring(80.0,105.0,1.0," Frame 1 sent successfully");

// delay();

}

void move9() // MOVEMENT OF ACK 1 (in safe sending)

{

GLint i,j, temp=3;

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,365.0,1.0," FRAME 0 sent");

glColor3f(0.0f,1.0f,0.0f);

drawstring(250.0,365.0,1.0," .... sending ACK1 ");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(320,265-j);glVertex2i(320,275-j);glVertex2i(325,275-j);glVertex2i(325,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(320,265-j);glVertex2i(320,275-j);glVertex2i(325,275-j);glVertex2i(325,265-j);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //movement of data packet from top to down

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(320,228-j);glVertex2i(320,238-j);glVertex2i(325,238-j);glVertex2i(325,228-j);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(250.0,365.0,1.0," .... sending ACK1 ");

glColor3f(0.0f,1.0f,0.0f);

drawstring(230.0,365.0,1.0,".............. sending ACK1 ");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(320,228-j);glVertex2i(320,238-j);glVertex2i(325,238-j);glVertex2i(325,228-j);

glEnd();

glFlush();

}

for(i=0;i<235;i=i+temp) //movement of data packet sidewise

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(310-i,168);glVertex2i(310-i,173);glVertex2i(320-i,173);glVertex2i(320-i,168);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,365.0,1.0,".............. sending ACK1 ");

glColor3f(0.0f,1.0f,0.0f);

drawstring(200.0,365.0,1.0,"........................... sending ACK1 ");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(310-i,168);glVertex2i(310-i,173);glVertex2i(320-i,173);glVertex2i(320-i,168);

glEnd();

glFlush();

}

for(j=0;j<63;j=j+temp) //to move the packet from bottom to top

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(70,168+j);glVertex2i(70,178+j);glVertex2i(75,178+j);glVertex2i(75,168+j);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(200.0,365.0,1.0,"........................... sending ACK1 ");

glColor3f(0.0f,1.0f,0.0f);

drawstring(160.0,365.0,1.0,"..................................... sending ACK1 ");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70,168+j);glVertex2i(70,178+j);glVertex2i(75,178+j);glVertex2i(75,168+j);

glEnd();

glFlush();

}

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,365.0,1.0,"..................................... sending ACK1 ");

glColor3f(0.0f,1.0f,0.0f);

drawstring(160.0,365.0,1.0," ACK1 received");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(55,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(320,268.0,0.0,"1");

// delay();

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,365.0,1.0," ACK1 received");

}

void move10() // SIMULTANEOUS MOVEMENT OF NAK 2 AS FRAME 2 IS LOST AND FRAME 4 (in packet crashing)

{

GLint i,j, temp=3;

timer2();

timer3();

timer4();

float k=0;

glColor3f(1.0,0.8,0.4);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(320.0,105.0,1.0,"Timer 4");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 4 sending ...........");

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending NAK2 ");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(1,1,0);

glBegin(GL_QUADS);

glVertex2i(335,265-j);glVertex2i(335,275-j);glVertex2i(340,275-j);glVertex2i(340,265-j);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(115,265-j);glVertex2i(115,280-j);glVertex2i(120,280-j);glVertex2i(120,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(335,265-j);glVertex2i(335,275-j);glVertex2i(340,275-j);glVertex2i(340,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(115,265-j);glVertex2i(115,280-j);glVertex2i(120,280-j);glVertex2i(120,265-j);

glEnd();

glFlush();

}

for(j=0;j<50;j=j+temp) //movement of data packet from top to down

{ glColor3f(1,1,0);

glBegin(GL_QUADS);

glVertex2i(335,228-j);glVertex2i(335,238-j);glVertex2i(340,238-j);glVertex2i(340,228-j);

glEnd();

glFlush();

k+=0.03;

timer(k,170.5,82,88);

timer(k,396.5,122,128);

timer(k,362.5,102,108);

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(115,238-j);glVertex2i(115,253-j);glVertex2i(120,253-j);glVertex2i(120,238-j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(335,228-j);glVertex2i(335,238-j);glVertex2i(340,238-j);glVertex2i(340,228-j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(115,238-j);glVertex2i(115,253-j);glVertex2i(120,253-j);glVertex2i(120,238-j);

glEnd();

glFlush();

}

for(i=0;i<235;i=i+temp) //movement of data packet sidewise

{ glColor3f(1,1,0);

glBegin(GL_QUADS);

glVertex2i(325-i,178);glVertex2i(325-i,183);glVertex2i(335-i,183);glVertex2i(335-i,178);

glEnd();

glFlush();

k+=0.03;

timer(k,170.5,82,88);

timer(k,396.5,122,128);

timer(k,362.5,102,108);

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(115+i,183);glVertex2i(115+i,188);glVertex2i(130+i,188);glVertex2i(130+i,183);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(325-i,178);glVertex2i(325-i,183);glVertex2i(335-i,183);glVertex2i(335-i,178);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(115+i,183);glVertex2i(115+i,188);glVertex2i(130+i,188);glVertex2i(130+i,183);

glEnd();

glFlush();

}

for(j=0;j<55;j=j+temp) //to move the packet from bottom to top

{

glColor3f(1,1,0);

glBegin(GL_QUADS);

glVertex2i(85,178+j);glVertex2i(85,188+j);glVertex2i(90,188+j);glVertex2i(90,178+j);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(365,183+j);glVertex2i(365,198+j);glVertex2i(370,198+j);glVertex2i(370,183+j);

glEnd();

glFlush();

k+=0.03;

timer(k,170.5,82,88);

timer(k,396.5,122,128);

timer(k,362.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85,178+j);glVertex2i(85,188+j);glVertex2i(90,188+j);glVertex2i(90,178+j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(365,183+j);glVertex2i(365,198+j);glVertex2i(370,198+j);glVertex2i(370,183+j);

glEnd();

glFlush();

}

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 4 sending ...........");

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending NAK2 ");

glColor3f(1.0,1.0,0.0);

drawstring(160.0,370.0,1.0,"FRAME 4 sent ");

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"NAK2 Recieved ");

// delay();

glColor3f(0.0,0.0,0.0);

drawstring(160.0,370.0,1.0,"FRAME 4 sent ");

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"NAK2 Recieved ");

}

void move11() // MOVEMENT OF ACK 4 (in packet crashing)

{

GLint i,j, temp=3;

timer2();

timer3();

timer4();

float k=0;

float p=0;

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK4 ");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(380,265-j);glVertex2i(380,275-j);glVertex2i(385,275-j);glVertex2i(385,265-j);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,82,88);

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(380,265-j);glVertex2i(380,275-j);glVertex2i(385,275-j);glVertex2i(385,265-j);

glEnd();

glFlush();

}

for(j=0;j<50;j=j+temp) //movement of data packet from top to down

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(380,228-j);glVertex2i(380,238-j);glVertex2i(385,238-j);glVertex2i(385,228-j);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,82,88);

timer(k,431.5,102,108);

p+=0.01;

timer(p,442,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(380,228-j);glVertex2i(380,238-j);glVertex2i(385,238-j);glVertex2i(385,228-j);

glEnd();

glFlush();

}

for(i=0;i<235;i=i+temp) //movement of data packet sidewise

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(370-i,178);glVertex2i(370-i,183);glVertex2i(380-i,183);glVertex2i(380-i,178);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,82,88);

timer(k,431.5,102,108);

p+=0.01;

timer(p,442,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(370-i,178);glVertex2i(370-i,183);glVertex2i(380-i,183);glVertex2i(380-i,178);

glEnd();

glFlush();

}

for(j=0;j<55;j=j+temp) //to move the packet from bottom to top

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(130,178+j);glVertex2i(130,188+j);glVertex2i(135,188+j);glVertex2i(135,178+j);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,82,88);

timer(k,431.5,102,108);

p+=0.01;

timer(p,442,122,128);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(130,178+j);glVertex2i(130,188+j);glVertex2i(135,188+j);glVertex2i(135,178+j);

glEnd();

glFlush();

}

glColor3f(1.0,1.0,1.0);

drawstring(365,268.0,0.0,"4");

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK4 ");

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"NAK4 Recieved ");

// delay();

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"NAK4 Recieved ");

}

void move12()

{

GLint i,j, temp=3;

float k=0;

timer1();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK2 ");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(335,265-j);glVertex2i(335,275-j);glVertex2i(340,275-j);glVertex2i(340,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(335,265-j);glVertex2i(335,275-j);glVertex2i(340,275-j);glVertex2i(340,265-j);

glEnd();

glFlush();

}

for(j=0;j<50;j=j+temp) //movement of data packet from top to down

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(335,228-j);glVertex2i(335,238-j);glVertex2i(340,238-j);glVertex2i(340,228-j);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(335,228-j);glVertex2i(335,238-j);glVertex2i(340,238-j);glVertex2i(340,228-j);

glEnd();

glFlush();

}

for(i=0;i<65;i=i+temp) //movement of data packet sidewise

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(325-i,178);glVertex2i(325-i,183);glVertex2i(335-i,183);glVertex2i(335-i,178);

glEnd();

glFlush();

k+=0.03;

timer(k,136.5,102,108);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(325-i,178);glVertex2i(325-i,183);glVertex2i(335-i,183);glVertex2i(335-i,178);

glEnd();

glFlush();

}

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK2 ");

}

void move13() // SIMULTANEOUS MOVEMENT OF ACK 1 AND FRAME 1(in safe sending)

{

GLint i,j, temp=3;

float k=0;

timer1();

timer2();

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(1.0,0.8,0.4);

drawstring(30.0,105.0,1.0," Timer 1");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 1 Resending ...........");

glColor3f(1.0f,1.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK3 ");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(350,265-j);glVertex2i(350,275-j);glVertex2i(355,275-j);glVertex2i(355,265-j);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70,265-j);glVertex2i(70,280-j);glVertex2i(75,280-j);glVertex2i(75,265-j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70,265-j);glVertex2i(70,280-j);glVertex2i(75,280-j);glVertex2i(75,265-j);

glEnd();

glFlush();

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(350,265-j);glVertex2i(350,275-j);glVertex2i(355,275-j);glVertex2i(355,265-j);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //movement of data packet from top to down

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(350,228-j);glVertex2i(350,238-j);glVertex2i(355,238-j);glVertex2i(355,228-j);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70,238-j);glVertex2i(70,253-j);glVertex2i(75,253-j);glVertex2i(75,238-j);

glEnd();

glFlush();

k+=0.03;

timer(k,102.5,102,108);

timer(k,148.5,82,88);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(350,228-j);glVertex2i(350,238-j);glVertex2i(355,238-j);glVertex2i(355,228-j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70,238-j);glVertex2i(70,253-j);glVertex2i(75,253-j);glVertex2i(75,238-j);

glEnd();

glFlush();

}

for(i=0;i<235;i=i+temp) //movement of data packet sidewise

{ glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(340-i,168);glVertex2i(340-i,173);glVertex2i(350-i,173);glVertex2i(350-i,168);

glEnd();

glFlush();

k+=0.03;

timer(k,102.5,102,108);

timer(k,148.5,82,88);

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(70+i,178);glVertex2i(70+i,183);glVertex2i(85+i,183);glVertex2i(85+i,178);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(340-i,168);glVertex2i(340-i,173);glVertex2i(350-i,173);glVertex2i(350-i,168);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(70+i,178);glVertex2i(70+i,183);glVertex2i(85+i,183);glVertex2i(85+i,178);

glEnd();

glFlush();

}

for(j=0;j<63;j=j+temp) //to move the packet from bottom to top

{

glColor3f(0,1,1);

glBegin(GL_QUADS);

glVertex2i(100,168+j);glVertex2i(100,178+j);glVertex2i(105,178+j);glVertex2i(105,168+j);

glEnd();

glFlush();

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(320,178+j);glVertex2i(320,193+j);glVertex2i(325,193+j);glVertex2i(325,178+j);

glEnd();

glFlush();

k+=0.03;

timer(k,102.5,102,108);

timer(k,148.5,82,88);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(100,168+j);glVertex2i(100,178+j);glVertex2i(105,178+j);glVertex2i(105,168+j);

glEnd();

glFlush();

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(320,178+j);glVertex2i(320,193+j);glVertex2i(325,193+j);glVertex2i(325,178+j);

glEnd();

glFlush();

}

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 1 Resending ...........");

glColor3f(0.0f,0.0f,0.0f);

drawstring(230.0,345.0,1.0,"........... sending ACK3 ");

glColor3f(1.2,0.6,1.6);

drawstring(315.0,248.0,1.0,"DUPLICATE " );//Frame 1");

glColor3f(1.2,0.6,1.6);

drawstring(310.0,238.0,1.0,"FRAME 1 Discarded ");

glFlush();

}

void move14() // RESENDING OF FRAME 2 (in packet crashing)

{

GLint i,j, temp=3;

timer2();

float k=0;

float q=0;

glColor3f(1.0,0.8,0.4);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(30.0,85.0,1.0,"Timer 2");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,1.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 Sending ...........");

for(j=0;j<4;j=j+temp) //movement of data packet within the frame

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85,265-j);glVertex2i(85,280-j);glVertex2i(90,280-j);glVertex2i(90,265-j);

glEnd();

glFlush();

k+=0.07;

timer(k,145.5,102,108);

q+=0.04;

timer(q,102.5,82,88);

glColor3f(0,0,0); // to remove traces create movement of frame in black

glBegin(GL_QUADS);

glVertex2i(85,265-j);glVertex2i(85,280-j);glVertex2i(90,280-j);glVertex2i(90,265-j);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //movement of data packet from top to down

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85,238-j);glVertex2i(85,253-j);glVertex2i(90,253-j);glVertex2i(90,238-j);

glEnd();

glFlush();

k+=0.07;

timer(k,145.5,102,108);

q+=0.04;

timer(q,102.5,82,88);

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85,238-j);glVertex2i(85,253-j);glVertex2i(90,253-j);glVertex2i(90,238-j);

glEnd();

glFlush();

}

for(i=0;i<231;i=i+temp) //movement of data packet sidewise

{ glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(85+i,178);glVertex2i(85+i,183);glVertex2i(100+i,183);glVertex2i(100+i,178);

glEnd();

glFlush();

k+=0.07;

timer(k,145.5,102,108);

q+=0.04;

timer(q,102.5,82,88);

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0f,1.0f,1.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 Sending ...........");

// drawstring(160.0,370.0,1.0,"FRAME 2 sending...................");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(85+i,178);glVertex2i(85+i,183);glVertex2i(100+i,183);glVertex2i(100+i,178);

glEnd();

glFlush();

}

for(j=0;j<60;j=j+temp) //to move the packet from bottom to top

{

glColor3f(1,0,0);

glBegin(GL_QUADS);

glVertex2i(335,178+j);glVertex2i(335,193+j);glVertex2i(340,193+j);glVertex2i(340,178+j);

glEnd();

glFlush();

k+=0.05;

timer(k,145.5,102,108);

q+=0.04;

timer(q,102.5,82,88);

setFont(GLUT_BITMAP_HELVETICA_12);

/////glColor3f(1.0f,1.0f,0.0f);

/////drawstring(160.0,365.0,1.0,"FRAME 0 sending ...............................");

glColor3f(0,0,0);

glBegin(GL_QUADS);

glVertex2i(335,178+j);glVertex2i(335,193+j);glVertex2i(340,193+j);glVertex2i(340,178+j);

glEnd();

glFlush();

}

glColor3f(0.0f,0.0f,0.0f);

drawstring(160.0,370.0,1.0,"FRAME 2 Sending ...........");

// delay();

glColor3f(0,0,0);

glBegin(GL_POLYGON);

glVertex2f(0,98);

glVertex2f(0,115);

glVertex2f(228,115);

glVertex2f(228,98);

glEnd();

glFlush();

//delay();

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(1.0,0.8,0.4);

drawstring(80.0,105.0,1.0," TIME OUT !!");

glFlush();

delay();

delay();

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(0,0,0);

drawstring(80.0,105.0,1.0," TIME OUT !!");

glFlush();

glColor3f(1.0,0.8,0.4);

drawstring(228.0,105.0,1.0," TIMER 1 restarted");

glFlush();

}

void draw1(void) // DRAWING OF SEND WINDOW WITH ITS LABELS

{

// SENDER WINDOW

glClear(GL_COLOR_BUFFER_BIT);

glColor3f(0.0,0.0,1.0);

slide(25,2,50,250); // Initial set of frames in BLUE color

glColor3f(1.0,1.0,1.0);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(210.0,405.0,1.0,"S E N D W I N D O W");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(50,220.0,0.0,"FRAMES ALREADY");

glColor3f(1.0,1.0,1.0);

drawstring(50,210.0,0.0,"ACKNOWLEDGED");

glColor3f(1.0,1.0,1.0);

drawstring(125,220.0,0.0,"FRAMES SENT");

glColor3f(1.0,1.0,1.0);

drawstring(125,210.0,0.0,"BUT NOT");

glColor3f(1.0,1.0,1.0);

drawstring(125,200.0,0.0,"ACKNOWLEDGED");

glColor3f(1.0,1.0,1.0);

drawstring(195,220.0,0.0,"FRAMES THAT");

glColor3f(1.0,1.0,1.0);

drawstring(195,210.0,0.0,"CAN BE SENT");

glColor3f(1.0,1.0,1.0);

drawstring(290,220.0,0.0,"FRAMES THAT CAN NOT BE SENT");

glColor3f(0.0,1.0,1.0);

drawstring(127,278.0,0.0,"Sf");

glColor3f(0.0,1.0,1.0);

drawstring(70,300.0,0.0,"( Sf: FIRST OUTSTANDING FRAME )");

glColor3f(0.0,1.0,1.0);

drawstring(187,278.0,0.0,"Sn");

glColor3f(0.0,1.0,1.0);

drawstring(195,300.0,0.0,"( Sn: NEXT FRAME TO SEND )");

glColor3f(1.0,1.0,1.0);

drawstring(55,260.0,0.0,"11");

glColor3f(1.0,1.0,1.0);

drawstring(69,260.0,0.0,"12");

glColor3f(1.0,1.0,1.0);

drawstring(84,260.0,0.0,"13");

glColor3f(1.0,1.0,1.0);

drawstring(99,260.0,0.0,"14");

glColor3f(1.0,1.0,1.0);

drawstring(114,260.0,0.0,"15");

glColor3f(1.0,1.0,1.0);

drawstring(130,260.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(147,260.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(163,260.0,0.0,"2");

glColor3f(1.0,1.0,1.0);

drawstring(177,260.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(191,260.0,0.0,"4");

glColor3f(1.0,1.0,1.0);

drawstring(206,260.0,0.0,"5");

glColor3f(1.0,1.0,1.0);

drawstring(221,260.0,0.0,"6");

glColor3f(1.0,1.0,1.0);

drawstring(236,260.0,0.0,"7");

glColor3f(1.0,1.0,1.0);

drawstring(251,260.0,0.0,"8");

glColor3f(1.0,1.0,1.0);

drawstring(266,260.0,0.0,"9");

glColor3f(1.0,1.0,1.0);

drawstring(280,260.0,0.0,"10");

glColor3f(1.0,1.0,1.0);

drawstring(295,260.0,0.0,"11");

glColor3f(1.0,1.0,1.0);

drawstring(310,260.0,0.0,"12");

glColor3f(1.0,1.0,1.0);

drawstring(324,260.0,0.0,"13");

glColor3f(1.0,1.0,1.0);

drawstring(339,260.0,0.0,"14");

glColor3f(1.0,1.0,1.0);

drawstring(354,260.0,0.0,"15");

glColor3f(1.0,1.0,1.0);

drawstring(370,260.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(385,260.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(400,260.0,0.0,"2");

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // Send window in WHITE color

glVertex2f(125,240);

glVertex2f(245,240);

glVertex2f(245,285);

glVertex2f(125,285);

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0);

slide(5,2,125,250); // Frames already sent and yet to be acknowledged in GREEN

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

slide(5,2,185,250); // Frames that are yet to be sent in RED color

glFlush();

glEnd();

//delay();

}

void draw2(void) // // DRAWING OF RECEIVE WINDOW WITH ITS LABELS

{

// RECIVER WINDOW

glClear(GL_COLOR_BUFFER_BIT);

glColor3f(1.0,1.0,1.0);

glFlush();

glColor3f(0.0,0.0,1.0);

slide(25,2,50,250); // Initial set of frames in BLUE color

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(210.0,405.0,1.0,"R E C I E V E W I N D O W");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(60,220.0,0.0,"FRAMES ALREADY RECIEVED");

glColor3f(1.0,1.0,1.0);

drawstring(172,220.0,0.0,"FRAMES THAT CAN BE RECIEVED");

glColor3f(1.0,1.0,1.0);

drawstring(172,210.0,0.0,"AND STORED FOR LATER DELIVERY");

glColor3f(1.0,1.0,1.0);

drawstring(172,200.0,0.0,"( GREEN BOXES ALREADY RECIEVED )");

glColor3f(1.0,1.0,1.0);

drawstring(300,220.0,0.0,"FRAMES THAT CAN NOT BE RECIEVED");

glColor3f(1.0,1.0,1.0);

drawstring(175,278.0,0.0,"Rn");

glColor3f(1.0,1.0,1.0);

drawstring(120,300.0,0.0,"( Rn: NEXT FRAME EXPECTED )");

glColor3f(1.0,1.0,1.0);

drawstring(55,260.0,0.0,"11");

glColor3f(1.0,1.0,1.0);

drawstring(69,260.0,0.0,"12");

glColor3f(1.0,1.0,1.0);

drawstring(84,260.0,0.0,"13");

glColor3f(1.0,1.0,1.0);

drawstring(99,260.0,0.0,"14");

glColor3f(1.0,1.0,1.0);

drawstring(114,260.0,0.0,"15");

glColor3f(1.0,1.0,1.0);

drawstring(130,260.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(147,260.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(163,260.0,0.0,"2");

glColor3f(1.0,1.0,1.0);

drawstring(177,260.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(191,260.0,0.0,"4");

glColor3f(1.0,1.0,1.0);

drawstring(206,260.0,0.0,"5");

glColor3f(1.0,1.0,1.0);

drawstring(221,260.0,0.0,"6");

glColor3f(1.0,1.0,1.0);

drawstring(236,260.0,0.0,"7");

glColor3f(1.0,1.0,1.0);

drawstring(251,260.0,0.0,"8");

glColor3f(1.0,1.0,1.0);

drawstring(266,260.0,0.0,"9");

glColor3f(1.0,1.0,1.0);

drawstring(280,260.0,0.0,"10");

glColor3f(1.0,1.0,1.0);

drawstring(295,260.0,0.0,"11");

glColor3f(1.0,1.0,1.0);

drawstring(310,260.0,0.0,"12");

glColor3f(1.0,1.0,1.0);

drawstring(324,260.0,0.0,"13");

glColor3f(1.0,1.0,1.0);

drawstring(339,260.0,0.0,"14");

glColor3f(1.0,1.0,1.0);

drawstring(354,260.0,0.0,"15");

glColor3f(1.0,1.0,1.0);

drawstring(370,260.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(385,260.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(400,260.0,0.0,"2");

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // Send window in WHITE color

glVertex2f(170,240);

glVertex2f(290,240);

glVertex2f(290,285);

glVertex2f(170,285);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

slide(2,2,170,250); // Frames already sent and yet to be acknowledged in GREEN

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0);

slide(2,2,185,250);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

slide(3,2,200,250);

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0);

slide(2,2,230,250);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

slide(2,2,245,250);

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0);

slide(2,2,260,250);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

slide(2,2,275,250);

glEnd();

glFlush();

// delay();

}

void draw3(void) // DRAWING OF SAFE SENDING

{

//Sender site initial window

glClear(GL_COLOR_BUFFER_BIT);

computer();

glColor3f(1.6,1.9,1.2);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(200.0,465.0,1.0,"S A F E S E N D I N G");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(55,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(69,268.0,0.0," 1");

glColor3f(1.0,1.0,1.0);

drawstring(84,268.0,0.0,"2");

glColor3f(1.0,1.0,1.0);

drawstring(99,268.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(114,268.0,0.0,"4");

glColor3f(1.0,1.0,1.0);

drawstring(130,268.0,0.0,"5");

glColor3f(1.0,1.0,1.0);

drawstring(147,268.0,0.0,"6");

glColor3f(1.0,1.0,1.0);

drawstring(163,268.0,0.0,"7");

glColor3f(1.0,1.0,1.0);

drawstring(177,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(305,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(320,268.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(334,268.0,0.0," 2");

glColor3f(1.0,1.0,1.0);

drawstring(349,268.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(364,268.0,0.0,"4");

glColor3f(1.0,1.0,1.0);

drawstring(379,268.0,0.0,"5");

glColor3f(1.0,1.0,1.0);

drawstring(394,268.0,0.0,"6");

glColor3f(1.0,1.0,1.0);

drawstring(409,268.0,0.0,"7");

glColor3f(1.0,1.0,1.0);

drawstring(424,268.0,0.0,"0");

//SENDER SIDE

glColor3f(0.0,0.0,1.0); // Initial set of frames in BLUE color

slide(10,2,50,260);

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // Send window in WHITE color

glVertex2f(50,255);

glVertex2f(110,255);

glVertex2f(110,290);

glVertex2f(50,290);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0);

slide(10,2,300,260); // Initial set of frames in BLUE color

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // initial sending frames in red

slide(5,2,50,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // receiver window in red

slide(5,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // receiver window in WHITE color

glVertex2f(300,255);

glVertex2f(360,255);

glVertex2f(360,290);

glVertex2f(300,290);

glEnd();

glFlush();

// delay();

glColor3f(0.0,1.0,0.0); //Frame 0 sent and becoming green

slide(2,2,50,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(4,2,65,260);

glEnd();

glFlush();

move1(); // movement of data packet

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(2,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // 4th frame red

slide(2,2,360,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // To remove initial WHITE window trace

glVertex2f(300,255);

glVertex2f(360,255);

glVertex2f(360,290);

glVertex2f(300,290);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(315,255);

glVertex2f(375,255);

glVertex2f(375,290);

glVertex2f(315,290);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // To remove traces

glBegin(GL_LINES);

glVertex2f(300,260);

glVertex2f(300,285);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // To remove traces

glBegin(GL_LINES);

glVertex2f(360,260);

glVertex2f(360,285);

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0); // sliding the window and becoming green

slide(2,2,65,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(1,2,300,260);

glEnd();

glFlush();

move2();

glColor3f(1.0,1.0,1.0);

drawstring(69,268.0,0.0," 1");

glColor3f(1.0,1.0,1.0);

drawstring(55,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(320,268.0,0.0,"1");

glColor3f(0.0,0.0,1.0); // sliding the window and becoming blue

slide(2,2,50,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // To remove initial WHITE window trace

glVertex2f(50,255);

glVertex2f(50,290);

glVertex2f(110,290);

glVertex2f(110,255);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming blue

slide(2,2,110,260);

glBegin(GL_LINES);

glVertex2f(110,260);

glVertex2f(110,285);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(65,255);

glVertex2f(65,290);

glVertex2f(125,290);

glVertex2f(125,255);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); //to remove traces

glBegin(GL_LINES);

glVertex2f(50,260);

glVertex2f(50,285);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(315,255);

glVertex2f(375,255);

glVertex2f(375,290);

glVertex2f(315,290);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

glBegin(GL_LINES);

glVertex2f(315,260);

glVertex2f(315,285);

glVertex2f(375,260);

glVertex2f(375,285);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(3,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(330,255);

glVertex2f(330,290);

glVertex2f(390,290);

glVertex2f(390,255);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(2,2,375,260);

glEnd();

glFlush();

//delay();

move8();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(334,268.0,0.0," 2");

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // remove window trace

glVertex2f(65,255);

glVertex2f(65,290);

glVertex2f(125,290);

glVertex2f(125,255);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(5,2,80,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(3,2,50,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(80,255);

glVertex2f(80,290);

glVertex2f(140,290);

glVertex2f(140,255);

glEnd();

glFlush();

// delay();

}

void draw4(void) // DRAWING OF PACKET CRASHNG

{

//second screen for lost packet

//delay();

glClear(GL_COLOR_BUFFER_BIT);

computer();

glColor3f(1.6,1.9,1.2);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(200.0,465.0,1.0,"P A C K E T C R A S H I N G");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(56,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(70,268.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(85,268.0,0.0,"2");

glColor3f(1.0,1.0,1.0);

drawstring(100,268.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(114,268.0,0.0," 4");

glColor3f(1.0,1.0,1.0);

drawstring(130,268.0,0.0,"5");

glColor3f(1.0,1.0,1.0);

drawstring(147,268.0,0.0,"6");

glColor3f(1.0,1.0,1.0);

drawstring(163,268.0,0.0,"7");

glColor3f(1.0,1.0,1.0);

drawstring(177,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(305,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(320,268.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(334,268.0,0.0," 2");

glColor3f(1.0,1.0,1.0);

drawstring(349,268.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(365,268.0,0.0,"4");

glColor3f(1.0,1.0,1.0);

drawstring(379,268.0,0.0," 5");

glColor3f(1.0,1.0,1.0);

drawstring(394,268.0,0.0,"6");

glColor3f(1.0,1.0,1.0);

drawstring(409,268.0,0.0,"7");

glColor3f(1.0,1.0,1.0);

drawstring(424,268.0,0.0,"0");

glColor3f(0.0,0.0,1.0);

slide(10,2,50,260); // Initial set of frames in BLUE color

glColor3f(1.0,0.0,0.0);

slide(5,2,50,260); // red frames in window

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // send window in WHITE color

glVertex2f(50,255);

glVertex2f(50,290);

glVertex2f(110,290);

glVertex2f(110,255);

glEnd();

glFlush();

//Reciver Window

glColor3f(0.0,0.0,1.0);

slide(10,2,300,260); // Initial set of frames in BLUE color

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

slide(5,2,300,260); // red frames in window

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(300,255);

glVertex2f(360,255);

glVertex2f(360,290);

glVertex2f(300,290);

glEnd();

glFlush();

// delay();

glColor3f(0.0,1.0,0.0);

slide(2,2,50,260); // red frames in window

glEnd();

glFlush();

move1();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(2,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // 4th frame red

slide(2,2,360,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // To remove initial WHITE window trace

glVertex2f(300,255);

glVertex2f(360,255);

glVertex2f(360,290);

glVertex2f(300,290);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(315,255);

glVertex2f(375,255);

glVertex2f(375,290);

glVertex2f(315,290);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // To remove traces

glBegin(GL_LINES);

glVertex2f(300,260);

glVertex2f(300,285);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // To remove traces

glBegin(GL_LINES);

glVertex2f(360,260);

glVertex2f(360,285);

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0); // sliding the window and becoming green

slide(2,2,65,260);

glEnd();

glFlush();

move2();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming blue

slide(2,2,50,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // To remove initial WHITE window trace

glVertex2f(50,255);

glVertex2f(50,290);

glVertex2f(110,290);

glVertex2f(110,255);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming blue

slide(2,2,110,260);

glBegin(GL_LINES);

glVertex2f(110,260);

glVertex2f(110,285);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(65,255);

glVertex2f(65,290);

glVertex2f(125,290);

glVertex2f(125,255);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); //to remove traces

glBegin(GL_LINES);

glVertex2f(50,260);

glVertex2f(50,285);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(315,255);

glVertex2f(375,255);

glVertex2f(375,290);

glVertex2f(315,290);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

glBegin(GL_LINES);

glVertex2f(315,260);

glVertex2f(315,285);

glVertex2f(375,260);

glVertex2f(375,285);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(3,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(2,2,375,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(330,255);

glVertex2f(330,290);

glVertex2f(390,290);

glVertex2f(390,255);

glEnd();

glFlush();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(56,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(320,268.0,0.0,"1");

move8();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(70,268.0,0.0,"1");

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // remove window trace

glVertex2f(65,255);

glVertex2f(65,290);

glVertex2f(125,290);

glVertex2f(125,255);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(5,2,80,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(3,2,50,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(80,255);

glVertex2f(80,290);

glVertex2f(140,290);

glVertex2f(140,255);

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0);

slide(2,2,80,260);

glFlush();

move3();

glColor3f(1.0,0.0,0.0); //packet crashing

glBegin(GL_POLYGON);

glVertex2f(240,168);

glVertex2f(255,168);

glVertex2f(260,178);

glVertex2f(265,168);

glVertex2f(280,168);

glVertex2f(267.5,163);

glVertex2f(280,153);

glVertex2f(260,163);

glVertex2f(240,153);

glVertex2f(252.5,163);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0); //to remove traces

glBegin(GL_TRIANGLES);

glVertex2f(240,168);

glVertex2f(260,178);

glVertex2f(255,168);

glEnd();

glFlush();

glBegin(GL_TRIANGLES);

glVertex2f(240,168);

glVertex2f(252.5,163);

glVertex2f(240,153);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0);

slide(2,2,65,260);

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINES);

glVertex2f(80,260);

glVertex2f(80,285);

glEnd();

glColor3f(0.0,1.0,0.0);

slide(2,2,95,260);

glFlush();

move5();

glColor3f(1.0,1.0,1.0);

drawstring(334,268.0,0.0," 2");

glColor3f(0.0,1.0,0.0);

slide(2,2,345,260);

glFlush();

glColor3f(0.0,1.0,0.0);

slide(2,2,110,260);

glFlush();

move10();

glColor3f(0.0,1.0,0.0);

slide(2,2,360,260);

glFlush();

glColor3f(0,0,0);

glBegin(GL_POLYGON); //to remove timer trace

glVertex2f(100,80);

glVertex2f(100,90);

glVertex2f(225,90);

glVertex2f(225,80);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0); //packet crashing

glBegin(GL_POLYGON);

glVertex2f(240,168);

glVertex2f(255,168);

glVertex2f(260,178);

glVertex2f(265,168);

glVertex2f(280,168);

glVertex2f(267.5,163);

glVertex2f(280,153);

glVertex2f(260,163);

glVertex2f(240,153);

glVertex2f(252.5,163);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0); //to remove traces

glBegin(GL_TRIANGLES);

glVertex2f(240,168);

glVertex2f(260,178);

glVertex2f(255,168);

glEnd();

glFlush();

glBegin(GL_TRIANGLES);

glVertex2f(240,168);

glVertex2f(252.5,163);

glVertex2f(240,153);

glEnd();

glFlush();

glColor3f(0.0f,0.0f,0.0f);

drawstring(280.0,163.0,1.0,"FRAME 2 lost");

move4();

glColor3f(1.0,1.0,1.0);

drawstring(334,268.0,0.0," 2");

glColor3f(0.0,1.0,0.0);

slide(2,2,330,260);

glFlush();

//delay();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(330,255);

glVertex2f(330,290);

glVertex2f(390,290);

glVertex2f(390,255);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0);

slide(6,2,300,260);

glFlush();

glColor3f(1.0,0.0,0.0);

slide(5,2,375,260);

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(375,255);

glVertex2f(375,290);

glVertex2f(435,290);

glVertex2f(435,255);

glEnd();

glFlush();

move11();

glColor3f(1.0,1.0,1.0);

drawstring(85,268.0,0.0,"2");

glColor3f(1.0,1.0,1.0);

drawstring(100,268.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(114,268.0,0.0," 4");

glColor3f(1.0,1.0,1.0);

drawstring(379,268.0,0.0," 5");

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(80,255);

glVertex2f(80,290);

glVertex2f(140,290);

glVertex2f(140,255);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0);

slide(6,2,50,260);

glFlush();

glColor3f(1.0,0.0,0.0);

slide(5,2,125,260);

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(125,255);

glVertex2f(125,290);

glVertex2f(185,290);

glVertex2f(185,255);

glEnd();

glFlush();

}

void draw5(void) // to show time out

{

//Sender site initial window

glClear(GL_COLOR_BUFFER_BIT);

computer();

glColor3f(0.0,0.0,1.0);

slide(10,2,50,260); // Initial set of frames in BLUE color

glFlush();

glColor3f(1.6,1.9,1.2);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(200.0,465.0,1.0,"T I M E O U T");

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(55,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(69,268.0,0.0," 1");

glColor3f(1.0,1.0,1.0);

drawstring(84,268.0,0.0," 2");

glColor3f(1.0,1.0,1.0);

drawstring(99,268.0,0.0,"3");

glColor3f(1.0,1.0,1.0);

drawstring(114,268.0,0.0,"4");

glColor3f(1.0,1.0,1.0);

drawstring(130,268.0,0.0,"5");

glColor3f(1.0,1.0,1.0);

drawstring(147,268.0,0.0,"6");

glColor3f(1.0,1.0,1.0);

drawstring(163,268.0,0.0,"7");

glColor3f(1.0,1.0,1.0);

drawstring(177,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(305,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(320,268.0,0.0,"1");

glColor3f(1.0,1.0,1.0);

drawstring(334,268.0,0.0," 2");

glColor3f(1.0,1.0,1.0);

drawstring(349,268.0,0.0," 3");

glColor3f(1.0,1.0,1.0);

drawstring(364,268.0,0.0,"4");

glColor3f(1.0,1.0,1.0);

drawstring(379,268.0,0.0,"5");

glColor3f(1.0,1.0,1.0);

drawstring(394,268.0,0.0,"6");

glColor3f(1.0,1.0,1.0);

drawstring(409,268.0,0.0,"7");

glColor3f(1.0,1.0,1.0);

drawstring(424,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // Send window in WHITE color

glVertex2f(50,255);

glVertex2f(110,255);

glVertex2f(110,290);

glVertex2f(50,290);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0);

slide(10,2,300,260); // Initial set of frames in BLUE color

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // initial sending frames in red

slide(5,2,50,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // receiver window in red

slide(5,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // receiver window in WHITE color

glVertex2f(300,255);

glVertex2f(360,255);

glVertex2f(360,290);

glVertex2f(300,290);

glEnd();

glFlush();

// delay();

glColor3f(0.0,1.0,0.0); //Frame 0 sent and becoming green

slide(2,2,50,260);

glEnd();

glFlush();

//timer1();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(4,2,65,260);

glEnd();

glFlush();

move1(); // movement of data packet

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(2,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // 4th frame red

slide(2,2,360,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // To remove initial WHITE window trace

glVertex2f(300,255);

glVertex2f(360,255);

glVertex2f(360,290);

glVertex2f(300,290);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(315,255);

glVertex2f(375,255);

glVertex2f(375,290);

glVertex2f(315,290);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // To remove traces

glBegin(GL_LINES);

glVertex2f(300,260);

glVertex2f(300,285);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // To remove traces

glBegin(GL_LINES);

glVertex2f(360,260);

glVertex2f(360,285);

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0); // sliding the window and becoming green

slide(2,2,65,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(1,2,300,260);

glEnd();

glFlush();

move2();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(69,268.0,0.0," 1");

glColor3f(1.0,1.0,1.0);

drawstring(320,268.0,0.0,"1");

glColor3f(0.0,0.0,1.0); // sliding the window and becoming blue

slide(2,2,50,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // To remove initial WHITE window trace

glVertex2f(50,255);

glVertex2f(50,290);

glVertex2f(110,290);

glVertex2f(110,255);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming blue

slide(2,2,110,260);

glBegin(GL_LINES);

glVertex2f(110,260);

glVertex2f(110,285);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(65,255);

glVertex2f(65,290);

glVertex2f(125,290);

glVertex2f(125,255);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); //to remove traces

glBegin(GL_LINES);

glVertex2f(50,260);

glVertex2f(50,285);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(315,255);

glVertex2f(375,255);

glVertex2f(375,290);

glVertex2f(315,290);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0);

glBegin(GL_LINES);

glVertex2f(315,260);

glVertex2f(315,285);

glVertex2f(375,260);

glVertex2f(375,285);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(3,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(330,255);

glVertex2f(330,290);

glVertex2f(390,290);

glVertex2f(390,255);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(2,2,375,260);

glEnd();

glFlush();

move12();

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(1.0f,1.0f,1.0f);

drawstring(280.0,163.0,1.0,"ACK 2 lost");

glColor3f(0.0,1.0,1.0); //packet crashing

glBegin(GL_POLYGON);

glVertex2f(240,168);

glVertex2f(255,168);

glVertex2f(260,178);

glVertex2f(265,168);

glVertex2f(280,168);

glVertex2f(267.5,163);

glVertex2f(280,153);

glVertex2f(260,163);

glVertex2f(240,153);

glVertex2f(252.5,163);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0); //to remove traces

glBegin(GL_TRIANGLES);

glVertex2f(240,168);

glVertex2f(260,178);

glVertex2f(255,168);

glEnd();

glFlush();

glBegin(GL_TRIANGLES);

glVertex2f(240,168);

glVertex2f(252.5,163);

glVertex2f(240,153);

glEnd();

glFlush();

glColor3f(0.0,1.0,0.0); // sliding the window and becoming green

slide(2,2,80,260);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_POLYGON); // moving the reciever window in WHITE color

glVertex2f(358,120);

glVertex2f(358,130);

glVertex2f(485,130);

glVertex2f(485,120);

glEnd();

glFlush();

move14();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(334,268.0,0.0,"2");

setFont(GLUT_BITMAP_HELVETICA_18);

glColor3f(0.0f,0.0f,0.0f);

drawstring(280.0,163.0,1.0,"ACK 2 lost");

glColor3f(0.0,0.0,0.0);

glBegin(GL_POLYGON); // moving the reciever window in WHITE color

glVertex2f(98,100);

glVertex2f(98,112);

glVertex2f(225,112);

glVertex2f(225,100);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(330,255);

glVertex2f(330,290);

glVertex2f(390,290);

glVertex2f(390,255);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(4,2,300,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(2,2,390,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(345,255);

glVertex2f(345,290);

glVertex2f(405,290);

glVertex2f(405,255);

glEnd();

glFlush();

glColor3f(0.0,0.0,0.0); //packet crashing

glBegin(GL_POLYGON);

glVertex2f(240,168);

glVertex2f(255,168);

glVertex2f(260,178);

glVertex2f(265,168);

glVertex2f(280,168);

glVertex2f(267.5,163);

glVertex2f(280,153);

glVertex2f(260,163);

glVertex2f(240,153);

glVertex2f(252.5,163);

glEnd();

glFlush();

move13();

setFont(GLUT_BITMAP_HELVETICA_12);

glColor3f(1.0,1.0,1.0);

drawstring(55,268.0,0.0,"0");

glColor3f(1.0,1.0,1.0);

drawstring(69,268.0,0.0," 1");

glColor3f(1.0,1.0,1.0);

drawstring(84,268.0,0.0," 2");

glColor3f(1.0,1.0,1.0);

drawstring(349,268.0,0.0,"3");

glColor3f(0.0,0.0,0.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(65,255);

glVertex2f(65,290);

glVertex2f(125,290);

glVertex2f(125,255);

glEnd();

glFlush();

glColor3f(0.0,0.0,1.0); // sliding the window and becoming green

slide(4,2,50,260);

glEnd();

glFlush();

glColor3f(1.0,0.0,0.0); // sliding the window and becoming green

slide(5,2,95,260);

glEnd();

glFlush();

glColor3f(1.0,1.0,1.0);

glBegin(GL_LINE_LOOP); // moving the reciever window in WHITE color

glVertex2f(95,255);

glVertex2f(95,290);

glVertex2f(155,290);

glVertex2f(155,255);

glEnd();

glFlush();

}

void draw6(void) // text for keyboard interaction

{

glColor3f(0.0,0.0,0.0);

glBegin(GL_POLYGON);

glVertex2f(0,0);

glVertex2f(0,135);

glVertex2f(500,135);

glVertex2f(500,0);

glEnd();

glFlush();

glColor3f(1.0f,1.0f,1.0f);

setFont(GLUT_BITMAP_HELVETICA_18);

drawstring(360.0,130.0,1.0,"DO U WISH TO CONTINUE?");

glColor3f(1.0f,1.0f,1.0f);

drawstring(360.0,110.0,1.0,"PRESS Y/N");

glFlush();

}

void display(void){

glClear(GL_COLOR_BUFFER_BIT);

title();

delay();

draw();

text();

}

void mykeyboard(unsigned char key,int x,int y){

if(key=='y' || key=='Y'){

draw();

text();

}

else if(key=='N' || key=='n'){

exit(0);

}

}

void myMouse(int btn, int state, int x, int y){

if(btn==GLUT_LEFT_BUTTON && state == GLUT_DOWN ){

x=x/2;

y=(1000-y)/2;

if ((x>=180 && x<=305) && (y>=395 && y<=425 ))// Menu ke-1

{

draw1();

draw6();

}

if((x>=180 && x<=305) && (y>=354 && y<=375 ))// Menu ke-2

{

draw2();

draw6();

}

if((x>=180 && x<=305) && (y>=311 && y<=333 )) // Menu ke-3

{

draw3();

delay();

draw6();

}

if((x>=180 && x<=305) && (y>=269 && y<=293 )) // Menu ke-4

{

draw4();

delay();

draw6();

}

if((x>=180 && x<=305) && (y>=226 && y<=249 )) // Menu ke-5

{

draw5();

delay();

draw6();

}

if((x>=180 && x<=305) && (y>=183 && y<=206 )) // Menu ke-6

{

exit(0);}

}

}

int main(int argc,char **argv)

{

glutInit(&argc,argv);

glutInitDisplayMode(GLUT_SINGLE|GLUT_RGBA);

glutInitWindowPosition(0,0);

glutInitWindowSize(1000,1000);

glutCreateWindow("Selective Repeat ARQ");

glutDisplayFunc(display);

glutMouseFunc(myMouse);

glutKeyboardFunc(mykeyboard);

myInit();

glutMainLoop();

return 0;

}