Computer Graphics Programs

Computer Graphics Programs with Computer Graphics Tutorial, Line Generation Algorithm, 2D Transformation, 3D Computer Graphics, Types of Curves, Surfaces, Computer Animation, Animation Techniques, Keyframing, Fractals etc.

<< Back to COMPUTER

next → ← prev

Computer Graphics Programs

Write a Program to draw basic graphics construction like line, circle, arc, ellipse and rectangle.

#include<graphics.h>
#include<conio.h>
void main()
{
	intgd=DETECT,gm;
	initgraph (&gd,&gm,"c:\\tc\\bgi");
	setbkcolor(GREEN);
	printf("\t\t\t\n\nLINE");
	line(50,40,190,40);
	printf("\t\t\n\n\n\nRECTANGLE");
	rectangle(125,115,215,165);
	printf("\t\t\t\n\n\n\n\n\n\nARC");
	arc(120,200,180,0,30);
	printf("\t\n\n\n\nCIRCLE");
	circle(120,270,30);
	printf("\t\n\n\n\nECLIPSE");
	ellipse(120,350,0,360,30,20);
	getch();
}

Output

Write a Program to draw animation using increasing circles filled with different colors and patterns.

#include<graphics.h>
#include<conio.h>
void main()
{
	intgd=DETECT, gm, i, x, y;
	initgraph(&gd, &gm, "C:\\TC\\BGI");
	x=getmaxx()/3;
	y=getmaxx()/3;
	setbkcolor(WHITE);
	setcolor(BLUE);
	for(i=1;i<=8;i++)
          {
		setfillstyle(i,i);
		delay(20);
		circle(x, y, i*20);
		floodfill(x-2+i*20,y,BLUE);
	}
	getch();
	closegraph();
}

Output

Program to make screen saver in that display different size circles filled with different colors and at random places.

#include<stdio.h>
#include<conio.h>
#include"graphics.h"
#include"stdlib.h"
void main()
{
	intgd=DETECT,gm,i=0,x,xx,y,yy,r;
	//Initializes the graphics system
	initgraph(&gd,&gm,"c:\\tc\\bgi");
	x=getmaxx();
	y=getmaxy();
	while(!kbhit())
	{
		i++;
	  //	setfillstyle(random(i),random(30));

		circle(xx=random(x),yy=random(y),random(30));
		setfillstyle(random(i),random(30));
		floodfill(xx,yy,getmaxcolor());
		delay(200);
	}
	getch();
}

Output

Write a Program to make a moving colored car using inbuilt functions.

#include<graphics.h>
#include<conio.h>
int main()
{
	intgd=DETECT,gm, i, maxx, cy;
	initgraph(&gd, &gm, "C:\\TC\\BGI");
	setbkcolor(WHITE);
	setcolor(RED);
	maxx = getmaxx();
	cy = getmaxy()/2;
	for(i=0;i<maxx-140;i++)
        {
		cleardevice();
		line(0+i,cy-20, 0+i, cy+15);
		line(0+i, cy-20, 25+i, cy-20);
		line(25+i, cy-20, 40+i, cy-70);
		line(40+i, cy-70, 100+i, cy-70);
		line(100+i, cy-70, 115+i, cy-20);
		line(115+i, cy-20, 140+i, cy-20);
		line(0+i, cy+15, 18+i, cy+15);
		circle(28+i, cy+15, 10);
		line(38+i, cy+15, 102+i, cy+15);
		circle(112+i, cy+15,10);
		line(122+i, cy+15 ,140+i,cy+15);
		line(140+i, cy+15, 140+i, cy-20);
		rectangle(50+i, cy-62, 90+i, cy-30);
		setfillstyle(1,BLUE);
		floodfill(5+i, cy-15, RED);
		setfillstyle(1, LIGHTBLUE);
		floodfill(52+i, cy-60, RED);
		delay(10);
         }
	getch();
	closegraph();
	return 0;
}

Output

Write a Program to print your name in Hindi script on console output in C.

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<dos.h>
void main()
{	
	int gd=DETECT,gm;
	initgraph(&gd,&gm,"c:\\tc\\bgi");
	setbkcolor(9);
	line(100,100,370,100);
	
	line(120,100,120,170);
	arc(143,100,0,180,23);
	line(165,100,165,155);
	arc(150,155,100,0,15);
	line(180,100,180,170);

	circle(210,140,10);
	line(210,130,250,130);

	circle(280,140,10);
	line(280,130,330,130);
	line(330,100,330,170);
	line(345,100,345,170);
	ellipse(337,100,0,180,9,18);
	getch();
}

Output

Write a Program control a ball using arrow keys.

#include<graphics.h>
#include<stdio.h>
void main()
{
	intgd=DETECT,gm,x,y,r=40;
	charch;
	initgraph(&gd,&gm,"C:/TURBOC3/BGI");
	setbkcolor(3);
	x=getmaxx()/2;
	y=getmaxy()/2;
	setfillstyle(1,RED);
	circle(x,y,r);
	floodfill(x,y,getmaxcolor());
	while((ch=getch())!=13)
      {
		switch(ch)
                     {
			case 75:	if(x>=r+1)
                                {
					cleardevice();
					circle(x-=10,y,r);
					floodfill(x,y,getmaxcolor());
	                      }
				break;
			case 72:	if(y>=r+1)
                                {
					cleardevice();
					circle(x,y-=10,r);
					floodfill(x,y,getmaxcolor());
                                  }
				break;
			case 77:	if(x<=(getmaxx()-r-10))
                               {
					cleardevice();
					circle(x+=10,y,r);
					floodfill(x,y,getmaxcolor());
                                }
 		 		break;
			case 80:	if(y<=(getmaxy()-r-10))
                               {
					cleardevice();
					circle(x,y+=10,r);
					floodfill(x,y,getmaxcolor());
		         }
		}
	}
	getch();
}

Output

Write a Program to implement Digital Clock.

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<dos.h>

struct time t;
void display(int,int,int);
void main()
{
	int i=0,gd=DETECT,gm,hr,min,sec;
	clrscr();
	initgraph(&gd,&gm,"c:\\turboc3\\bgi");
	setcolor(GREEN);
	settextstyle(4,0,7);

	while(!kbhit())
	{
	   gettime(&t);
	   hr=t.ti_hour;
	   min=t.ti_min;
	   sec=t.ti_sec;
	   i++;

	   display(100,100,hr);
	   display(200,100,min);
	   display(300,100,sec);
              sound(400);
	   delay(30);
	   nosound();
	   delay(930);
	   cleardevice();
	}
	getch();
}
void display(int x,int y,int num)
{

	 char str[3];
	 itoa(num,str,10);

	 settextstyle(4,0,7);

	 outtextxy(180,100,":");
	 outtextxy(280,100,":");
	 outtextxy(x,y,str);

	 rectangle(90,90,380,200);
	 rectangle(70,70,400,220);

	 outtextxy(90,250,"Digital Clock");
}

Output

Write a Program to make puzzle game.

#include<iostream.h>
#include<dos.h>
#include<conio.h>
 #include<graphics.h>
#include<stdio.h>

int a[5][5];
int t[16]={0,4,11,12,7,1,15,5,13,6,10,3,2,14,8,9};
int test[16]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};

struct pos
     {
       int h,v;
     }
	p[4][4];
 int row=4,col=4;

void game(int); //MOVEMENT
void rec();   //DRAWING RECTANGLE
void pri();   //PRINTING NUMBERS INITIALLY
int getkey();   // TO TRACE KEY PRESSED
inline void space() 
   {
         cout<<""; 
   }
inline void print(int r,int c) 
   { 
          cout<<a[r][c]; 
   }
void init();   //TO STORE CO-ORDINATES
int stop();     // STOPING CRITERION
void gopr(int,int);   //TO PRINT NUMBER IN GAME

 void main()
{
     int gm=DETECT,gd=DETECT;
     initgraph(&gm,&gd,"c:\\turboc3\\bgi");

      int d,cr=1;
      init();
      rec();
      print();

      while(cr!=16)
    {
          d=getkey();
       game(d);
      cr=stop();
  }

  settextstyle(10,0,1);
  outtextxy(400,300,"You are winner!");
  getch();

}
void rec()
{
        setcolor(5);

        for(int i=0;i<200;i+=50)
     {
        for(int j=0;j<240;j+=60)
        rectangle(j+100,i+100,j+50,i+60);
     }

  }

   void pri()
  {
         int k=1;
         for(int x=0,i=6;x<4;x++,i+=3)
    {
         for(int y=0,j=10;y<4&&k<16;y++,j+=7,k++)
        {

         gotoxy(p[x][y].h,p[x][y].v);
         cout<<a[x][y];
        }
    }

  }

      int getkey()
  {
      union REGS i,o;
      while(!kbhit());
       i.h.ah=0;
      int86(22,&i,&o);
      return(o.h.ah);
  } 

     void init()
 {
            int k=1;
            for(int x=0,i=6;x<4;x++,i+=3)
      {
            for(int y=0,j=10;y<4;y++,j+=7)
         {
             p[x][y].h=j;
             p[x][y].v=i;
             a[x][y]=t[k++];
          }
      }

   }

     void game(int s)
  {
	   int r=row-1;
	   int c=col-1;

	    if(s==77 &&c!=0)  //right
	  {
		col--;

	     a[r][c]=a[r][c-1];
               gopr(r,c-1);
               space();
               gopr(r,c);
               print(r,c-1);
              }
             if(s==80 && r!=0)   //down
	  {
	     row--;
               a[r][c]=a[r-1][c];
               gopr(r-1,c);
               space();
               gopr(r,c);
               print(r-1,c);
            }

	      if(s==75 && c!=3)     //left
	 {
	      a[r][c]=a[r][c+1];
	    col++;
	    gopr(r,c+1);
              space();
              gopr(r,c);
                print(r,c+1);

	 }

	    if(s==72 &&r!=3)     //up
	 {

	    a[r][c]=a[r+1][c];
               row++;
               gopr(r+1,c);
               space();
               gopr(r,c);
               print(r+1,c);

           }
 }

	void gopr(int x, int y)
       {
	 gotoxy(p[x][y].h,p[x][y].v);
       }


           int stop()
    {
          int k=0,d=1;
          for(int x=0;x<4;x++)
      {
          for(int y=0;y<4;y++)
         {
	 if(a[x][y]==test[k])
	   d++;
             k++;
          }
      }
       return d;
   }

Output

Write a Program to implement bouncing ball using sine wave form.

#include<stdio.h>
#include<graphics.h> 
#define HEIGHT getmaxy()
#define WIDTH getmaxx()
#define GROUND 450
#define MAXHEIGHT 420 
void main()
{
        int x,y=0,t=MAXHEIGHT,c=1;
        int gd=DETECT,gm;
       initgraph(&gd,&gm,"C:\\T urboC3\\BGI"); 
      for(x=40;x<=getmaxx();x=x+2)
 {
     //Draw Ground
     rectangle (0,MAXHEIGHT,getmaxx(),MAXHEIGHT+5);
     floodfill (5,MAXHEIGHT+3,WHITE);
    //Draw Ball
   pieslice(x,y,0,360,20);
   //floodfill(x,y,RED);
   delay(100);
   if(y>MAXHEIGHT-20)
     {
         c=0;
         t=t-40;
     }
     if(y<=(MAXHEIGHT-t))
    {
           c=1;
     }
        if(t>=40)
       y=y+(c? 15:-15); 
       cleardevice();
       //Exit upon keypress
       if(kbhit())
       break;
}
getch();
}

Output

Write a Program to implement Bouncing Ball in vertical direction.

#include <stdio.h>
#include <conio.h>
#include <graphics.h>
#include <dos.h>
 
int main() 
{
          int gd = DETECT, gm;
          int i, x, y, flag=0;
          initgraph(&gd, &gm, "C:\\TC\\BGI");
 
         x = getmaxx()/2;
         y = 30;
        while (!kbhit()) 
      {
            if(y >= getmaxy()-30 || y <= 30)
           flag = !flag;
           /* draws the gray board */
           setcolor(RED);
           setfillstyle(SOLID_FILL, RED);
           circle(x, y, 30);
           floodfill(x, y, RED);
 
          delay(50); 
          cleardevice();
          if(flag)
      {
           y = y + 5;
      } 
          else
     {
          y = y - 5;
      }
  }
 
    getch();
    closegraph();
    return 0;
}

Output

Write a program of Translation, Rotation, and Scaling using Composite Transformation.

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>
int x1,y1,x2,y2,x3,y3,a,b;
void draw();
void rotate();
int main(void)
{
int gd=DETECT,gm;
initgraph(&gd,&gm,"C:\\TC\\BGI");
printf("Enter first co-ordinate value for triangle:");
scanf("%d%d",&x1,&y1);
printf("Enter second co-ordinatevalues for triangle:");
scanf("%d%d",&x2,&y2);
printf("Enter third co-ordinate valuesfor triangle:");
scanf("%d%d",&x3,&y3);
draw();
getch();
rotate();
getch();

return 0;
}

void draw()
{
  line(x1,y1,x2,y2);
  line(x2,y2,x3,y3);
  line(x3,y3,x1,y1);
}
 void rotate()
 {
	int a1,a2,a3,b1,b2,b3;
	float angle;
	printf("Enter the rotation angle co-ordinates:");
	scanf("%f",&angle);
	cleardevice();
	  angle=(angle*3.14)/180;
	  a1=a+(x1-a)*cos(angle)-(y1-b)*sin(angle);
	  b1=b+(x1-a)*sin(angle)+(y2-b)*cos(angle);
	  a2=a+(x2-a)*cos(angle)-(y1-b)*sin(angle);
	  b2=b+(x2-a)*sin(angle)+(y2-b)*cos(angle);
	  a3=a+(x3-a)*cos(angle)-(y1-b)*sin(angle);
	  b3=b+(x3-a)*sin(angle)+(y2-b)*cos(angle);
	  printf("ROTATION");
	  printf("\n Changed coordinates\n");
	  printf("%d %d\n%d %d\n%d %d",a1,b1,a2,b2,a3,b3);
	line(a1,b1,a2,b2);
	line(a2,b2,a3,b3);
	line(a3,b3,a1,b1);
 }

Output

Write a program to draw a Circle using midpoint implementation Method.

#include<stdio.h>
#include<graphics.h>
 
void drawcircle(int x0, int y0, int radius)
{
    int x = radius;
    int y = 0;
    int err = 0;
 
    while (x >= y)
    {
	putpixel(x0 + x, y0 + y, 7);
	putpixel(x0 + y, y0 + x, 7);
	putpixel(x0 - y, y0 + x, 7);
	putpixel(x0 - x, y0 + y, 7);
	putpixel(x0 - x, y0 - y, 7);
	putpixel(x0 - y, y0 - x, 7);
	putpixel(x0 + y, y0 - x, 7);
	putpixel(x0 + x, y0 - y, 7);
           if (err <= 0)
	{
	    y += 1;
	    err += 2*y + 1;
	}
 
	if (err > 0)
	{
	    x -= 1;
	    err -= 2*x + 1;
	}
    }
}
 void main()
{
	int gdriver=DETECT, gmode, error, x, y, r;
	initgraph(&gdriver, &gmode, "c:\\turboc3\\bgi");
           printf("Enter radius of circle: ");
	scanf("%d", &r);
 
	printf("Enter co-ordinates of center(x and y): ");
	scanf("%d%d", &x, &y);
	drawcircle(x, y, r);
	getch();
}

Output

Write a program to draw Bezier curve.

#include 
#include 
#include 
#include 

void bezier (int x[4], int y[4])
{
    int gd = DETECT, gm;
    int i;
    double t;
    initgraph (&gd, &gm, "C:\\tc\\bgi");

    for (t = 0.0; t < 1.0; t += 0.0005)
    {
	double xt = pow (1-t, 3) * x[0] + 3 * t * pow (1-t, 2) * x[1] +
		    3 * pow (t, 2) * (1-t) * x[2] + pow (t, 3) * x[3];

	double yt = pow (1-t, 3) * y[0] + 3 * t * pow (1-t, 2) * y[1] +
		    3 * pow (t, 2) * (1-t) * y[2] + pow (t, 3) * y[3];

	putpixel (xt, yt, WHITE);
    }
  for (i=0; i<4; i++)
	putpixel (x[i], y[i], YELLOW);

    getch();
    closegraph();
    return;
}

void main()
{
    int x[4], y[4];
    int i;
    printf ("Enter the x- and y-coordinates of the four control points.\n");
    for (i=0; i<4; i++)
   scanf ("%d%d", &x[i], &y[i]);
    bezier (x, y);
 }

Output

Program to rotate a rectangle about its midpoint

#include<iostream.h>
#include <stdio.h>
#include<conio.h>
#include<graphics.h>
#include<stdlib.h>
#define pi 3.14
class arc
{
	float x[10], y[10], theta, h1, k1,r[0][10],ang;
	float p[10][10],p1[10][10],x1[10], y1[10],xm,yx;
	int i, k, j, n;
	public:
	void get();
	void cal();
	void map();
	void graph();
	void plot();
	void plot1();
};
void arc::get()
{
	cout "<<"\n ENTER ANGLE OF ROTATION ";
           cin>>ang;
           n = 4;
           cout<<"\n ENTER";
         for (i=0; i<n; i++)
         {
               cout<<"\n x["<i<<"] and y["<<i<<"]";
                cin>>x[i]>>y[i];
         }
         h1=x [0] + (([1]-x[0])/2);
         k1=y[0]+(([3]-y[0])/2);
         cout<<"\n MIDPOINT OF RECTANGLE IS--"<<h1<<"\t"<<k1;
         theta=(ang*pi)/180?;
         r[0][0]=cos (theta);
         r[0][1]= -sin?(theta);
         r[0][2]=(-h1*cos(theta))+(k1*sin(theta)+h1;
         r[1][0]=sin (theta);
         r [1][1]=cos (theta);
         r [1][2]=(-h1*sin(theta))+(-k1*cos(theta)+k1;
         r[2][0]=0;
         r[2][1]=0;
         r[2][2]=1;
}
void arc ::cal()
{
	for(i=0;i<n;i++)
	{
		p[0][i]=x[i];
		p[1][i]=y[i];
		p[2][i]=1;
	}
	for(i=0;i<3;i++)
	{
		for(j=0;j<n;j++)
		{
			p1[i][j]=0;
		           for (k=0;k<3;k++)
			{
				p1[i][j]+=r[i][k]*p[k][j];
			}
		}
	}
	for(i=0;i<n;i++)
	{
		x1[i]=p1[0][i];
		y1[i]=p[1][i];
	}
}
void arc::map()
{
	int gd=DETECT, gm;
	initgraph (&gd, &gm, "");
	int errorcode = graphresult();
	/*an error occurred */
           if (errorcode!=grOK)
	{
		printf("Graphics error: %s \n",grapherrormsg (errorcode));
                      printf("Press and key to halt: ");
                      getch();
                      exit(1); /* terminate with an error code */
            }
}
void arc::graph()
{
	xm=getmaxx()/2;
	ym=getmaxy()/2;
	line (xm, 0, xm, 2 * ym);
	line (0, ym, 2 * xm, ym);
}
void arc :: plot 1()
{
	for (i=0;i<n-1;i++)
	{
		circle (x1[i]+xm, (-y1[i]+ym), 2);
		line (x1[i]+xm, (-y1[i]+ym), x[i+1] xm, (-y1[0]+ym));
	}
	line (x1[n-1] +xm, (-y1[n-1]+ym), x1[0]+xm, (-y1[0]+ym));
	getch();
}
void arc :: plot ()
{
	for (i=0;i<n-1;i++)
	{
		circle (x[i]+xm, (-y[i]+ym), 2);
		line (x[i]+xm, (-y[i]+ym), x[i+1] xm, (-y[i+1]+ym));
	}
	circle (x[n-1]+xm, (-y[n-1]+ym),2);
	line (x[n-1]+xm, (-y[n-1]+ym), x[0]+xm, (-y[0]+ym));
	getch();
}
void main ()
{
	class arc a;
	clrscr();
	a.map();
	a.graph();
	a.get();
	a.cal();
	a.plot();
	a.plot1();
	getch();
}

Output

Program to clip a line using Liang Barsky Method

#include
#include 
#include
#include
#include
class liang
{
	float x1,x2,y1,y2,u1,u2,dx,dy,xm,ym;
	float xmin, ymin, xmax, ymax,p[4],q[4],r[5],r[5];
	int gd, gm, test, s, k;
	public:
	void clipliang();
	void get();
	void map();
	void graph();
};
void liang :: map()
{
	gd=DETECT;
	initgraph (&gd, &gm, "");
	int errorcode = graphresult();
	/*an error occurred */
           if (errorcode!=grOK)
	{
		printf("Graphics error: %s \n",grapherrormsg (errorcode));
                      printf("Press and key to halt: ");
                      getch();
                      exit(1); /* terminate with an error code */
            }
}
void liang::graph()
{
	xm=getmaxx()/2;
	ym=getmaxy()/2;
	line (xm, 0, xm, 2 * ym);
	line (0, ym, 2 * xm, ym);
}
void liang :: get()
{
	cout<<"\n ENTER WINDOW COORDINATES xwmin, ywmin, xwmax, ywmax";
	cin>>xmin>>ymin>>xmax>>ymax>>;
	rectangle (xmin+xm,-ymin+ym,xmax+xm, -ymax+ym);
       //  rectangle (320+xwmin, 240-ywmax, 320+xwmax, 240-ywmin);
           cout<<"\n ENTER END POINTS OF LINE (x1, y1)(x2, y2) ";
           cin>>x1>>y1>>x2>>y2;
	line (x1+xm,-y1+ym, x2+xm,-y2+ym);
	getch();
}
       // line (x1, y1, x2, y2);
void liang :: clipliang()
{
	float x=0, y=1;
	dx=x2-x1;
	dy=y2-y1;
	p[0]=-dx;
	p[1]=dx;
	p[2]=-dy;
	p[3]=dy;
	q[0]=x1-xmin;
	q[1]=xmax-x1;
	q[2]=y1-ymin;
	q[3]=ymax-y1;
	for (k=0;k<4;k++)
	{
		if (p[k]==0&&q[k]<0)
		{
			cout<<"\n OUTSIDE";
                                 getch();
                                 exit(0);
                      }
                       if (p[k]<0)
	           {
			r[k]=q[k]/p[k];
			if (r1[k]u2)
		{
			cout<<"\n COMPLETE OUTSIDE WINDOW";
                                 getch();
                                 exit(0);
                        }
void main ()
{
	liang1;
	clrscr();
	l.map();
	l.graph();
	l.get();
	l.clipliang();
	getch();
}

Output

Program to implement Standard Perspective Projection in 3-Dimensions.

#include<iostream.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>
#include<stdio.h>
#include<stdlib.h>
#define pi 3.14
class per
{
	float x[10], y[10], z [10], d;
	float x1 [10], y1[10], xm, ym, z1 [10];
	int i, k, j, n;
	public:
	void get();
	void perpro();
	void map();
	void graph();
	void plot1();
}
void per::get()
{
	cout<< "\n ENTER OF VERTICES";
            cin>>n;
	cout<<"\n ENTER";
            for (i=0;i<n;i++)
	{
		cout<<"\n x["?i<<"], y["<<i<<"] and z ["<<i<<"]";
		cin>>x[i]>>y[i]>>z[i];
	}
		cout<<"\n ENTER WIDTH FOR Z-AXIS-d";
		cin>>d;
}
void per:: perpro()
{
	for(i=0;i<n;i++)
	{
		x1[i]=(d*x[i])/(z[i]+d);
		y1[i]=(d*y[i])/(z[i]+d);
		z1[i]=0;
	}
	cout<< "\n ENTER PROJECTION, VERTICES OF POLYGON ARE--";
            for(i=0;i<n;i++)
	{
		cout<<"x?["<<i<<"]="<<x1[i]<< "\t";
		cout<<"y?["<<i<<"]="<<y1[i]<< "\t";
		cout<<"z?["<<i<<"]="<<z1[i]<< "\t";
		cout<<"\n";
	}
}
void per :: map()
{
	int gd=DETECT;
	initgraph (&gd, &gm, "");
	int errorcode = graphresult();
	/*an error occurred */
           if (errorcode!=grOK)
	{
		printf("Graphics error: %s \n",grapherrormsg (errorcode));
                      printf("Press and key to halt: ");
                      getch();
                      exit(1); /* terminate with an error code */
            }
}
void per::graph()
{
	xm= get maxx()/2;
	ym=get maxy()/2
	line (xm,0, xm, 2 * ym);
	line (0, ym, 2 * xm, ym);
}
void per::plot1()
{
	for(i=0;i<n-1;i++)
	{
		line(x1[i]*100+xm,(-y1[i]*100+ym),x1[i+1]*100+xm,(-y1[i+1]*100+ym));
	}
line(x1[n-1]*100+xm,(-y1[n-1]*100+ym),x1[0]*100+xm,(-y1[0]*100+ym));
	getch();
}
void main()
{
	class per a;
	clrscr();
	a.map();
	a.graph();
	a.get();
	a.perpro();
	a.graph();
	a.plot1();
	getch();
}

Output

Program to implement Parallel Projection in 3-Dimensions.

#include<iostream.h>
#include<conio.h>
#include<graphics.h>
#include<math.h>
#include<stdio.h>
#include<stdlib.h>
#define pi 3.14
class per
{
	float x[10], y[10], z [10], d, m[10], q1[10], r1[10], m1[10];
	float x1 [10], y1[10], xm, ym, z1 [10], cav[4] [4], p[10] [10];
	float p1[10] [10];
	float a, b, c, ang, theta, f;
	int i, k, j, n;
	public:
	void get();
	void par_v();
	void par_vnr0();
	void map();
	void graph();
	void project(float m[],float q[], float r[]);
};
void per:: perproject(float m[], float q[], float r[])
{
	cout<<"\n ENTER WIDTH FOR Z-AXIS d";
	cin>>d;
	cout<< "\n AFTER PROJECTION, VERTICES OF POLYGON ARE--";
            for(i=0;i<n;i++)
	{
		cout<<"x?["<<i<<"]="<<x1[i]<< "\t";
		cout<<"y?["<<i<<"]="<<y1[i]<< "\t";
		cout<<"z?["<<i<<"]="<<z1[i]<< "\t";
		cout<<"\n";
	}
	getch();
	clearviewport();
	graph();
	for(i=0;i<n-1;i++)
	{
		line(m[i]*100+xm,(-q[i]*100+ym),m[i+1]*100+xm,(-n1[i+1]*100+ym));

            }
	line(m[n-1]*100+xm,(-q[n-1]*100+ym),m[0]*100+xm,(-q[0]*100+ym));
getch();
}
void per::get()
{
	cout<< "\n ENTER OF VERTICES";
            cin>>n;
	cout<<"\n ENTER";
            for (i=0;i<n;i++)
	{
		cout<<"\n x["?i<<"], y["<<i<<"] and z ["<<i<<"]";
		cin>>x[i]>>y[i]>>z[i];
	}
		cout<<"\n ENTER WIDTH FOR Z-AXIS-d";
		cin>>d;
		int ch=100;
		do
		{
			cout<< "\n 1->orthographic projection";
                                cout<<"\n 2->oblique projection";
                                cout<<"\n 0-> exit";
			cout<<"\n enter ch";
			cin>>ch;
			switch (ch)
			{
				case1:
					int ch1=100;
				do
				{
					cout<<"\n 1->for xy viewplane";
					cout<<"\n 2->for yz viewplane";
					cout"\n 3->for zx viewplane";
					cout<<"\n 0->exit";
					cout<<"\n enter ch1";
					cin>>ch1;
					switch(ch1)
					{
						case1:
							x1[i]=x[i];
							y1[i]=y[i];
							z1[i]=0;
							project(x1,y1,z1);
							break;
						case2:
							x1[i]=0;
							y1[i]=0;
							z1[i]=z[i];
							project(x1,y1,z1);
							break;
						case3:
							x1[i]=x[i];
							y1[i]=0;
							z1[i]=z[i];
							project(x1,y1,z1);
							break;
					}
				}
			while (ch!=0)
			     break;
		           case2:
				ch1=100;
				do
				{
					cout<<"\n 1->on xy plane";
					cout<<"\n 2->cavalier";
					cout<<"\n 0->exit";
					cout<<"\n enter ch1";
					cin>>ch1;
					switch(ch1)
					{
						case1:
							par_v();
							break;
						case2:
							par_vnr0();
							break();
					}
					while(ch!=0);
					break;
				}
				while(ch!=0)
			}
	void per::par_v()
	{
		cout<<"\n enter v (a, b, c) "	;
		cin>>a>>b>>c;
		for(i=0; i<n;i++)
		{
			x1[i]=x[i]-((a*z[i]/c);
			y1[i]=y[i]-((b*z[i]/c);
			project(x1,y1, z1);
		}
         }
        void per::par_vnr0()
        {
		cout<<"\n enter f";
		cin>>f;
		cout<<"\n enter angle";
		cin>>angle;
		theta= ((pi/180)* ang);
		for(i=0;i<4;i++)
		{
			for(j=0;j<4;j++)
			{
				if(i==j)
				cav[i] [j]=1;
				else
					cav[i] [j]=0;
			}
		}
		cav[0] [2]=f*cos(theta);
		cav[1][2]=f*sin (theta);
		cav[2][2]=0;
		for(i=0;i<n;i++)
		{
			p[0][i]=x[i];
			p[1][i]=y[i];
			p[2][i]=z[i];
			p[3][i]=1;
		}
		for(i=0;i<4;i++)
		{
			for(j=0;j<n;j++)
			{
				p1[i][j]=0;
				for(k=0;k<4;k++)
				{
					p1[i][j]+=cav[i][k]*p[k][j];
				}
			}
		}
		for(i=0;i<n;i++)
		{
			x1[i]=p1[0][i];
			y1[i]=p1[1][i];
			z1[i]=p1[i];
		}
		project(x1,y1,z1);
        }
void per :: map()
{
	int gd=DETECT;
	initgraph (&gd, &gm, "");
	int errorcode = graphresult();
	/*an error occurred */
           if (errorcode!=grOK)
	{
		printf("Graphics error: %s \n",grapherrormsg (errorcode));
                      printf("Press and key to halt: ");
                      getch();
                      exit(1); /* terminate with an error code */
            }
}
void per::graph()
{
	xm= get maxx()/2;
	ym=get maxy()/2
	line (xm,0, xm, 2 * ym);
	line (0, ym, 2 * xm, ym);
}
void main()
{
	class per a;
	clrscr();
	a.map();
	a.get();
	getch();
}

Output

Program to draw Sine, Cosine and Tangent Curves

#include
#include
#include
#include
#include
#include
#define pi 3.14
class arc
{
	float x, y, a, xm, ym;
	int i, ch;
	public:
	void get();
	void map();
	void sine();
	void cosine();
	void tangent();
};
void arc::get()
{
	cout<<"\n ENTER THE MAXIMUM VALUE FOR Y";
           cin>>y;
           cout<<"\n MENU IS---------";
	cout<<"\n 1-> SINE CURVE";
           cout<<"\n 2->COSINE CURVE";
	cout<<"\n 3-> TANGENT CURVE";
	cout<<"\n 4-> EXIT";
	cout<<"\n ENTER YOUR CHOICE";
           cin>>ch;
           switch(ch)
           {
                     case1:
			sine();
			break();
		case2:
			cosine();
		case3:
			tangent();
		case4:
			exit(0);
	}
}
void arc::sine()
{
	cleardevice();
	xm=getmaxx()/2;
	ym=getmaxy()/2;
	line(xm, 0, xm, 2*ym);
	line(0, ym, 2 *xm, ym);
	outtextxy(0, ym, "X-AXIS");
           outtextxy(xm, 0, "Y-AXIS");
	for(x=-300;x<=300;x=x+0.5)
	{
		y=a*sin((pi*x)/180);
		putpixel(x+(320),-y+240,RED);
	}
}
void arc::cosine()
{
	cleardevice();
	xm=getmaxx()/2;
	ym=getmaxy()/2;
	line(xm, 0, xm, 2*ym);
	line(0, ym, 2 *xm, ym);
	outtextxy(0, ym, "X-AXIS");
           outtextxy(xm, 0, "Y-AXIS");
	for(x=-300;x<=300;x=x+0.5)
	{
		y=a*cos((pi*x)/180);
		putpixel(x+(320),-y+240,RED);
	}
}
void arc :: map()
{
	int gd=DETECT,gm;
	initgraph (&gd, &gm, "");
	int errorcode = graphresult();
	/*an error occurred */
           if (errorcode!=grOK)
	{
		printf("Graphics error: %s \n",grapherrormsg (errorcode));
                      printf("Press and key to halt: ");
                      getch();
                      exit(1); /* terminate with an error code */
            }
}
void main()
{
	class arc a;
	clrscr();
	a.map();
	a.get();
	getch();
}

Output

Next Topic#

← prev next →

.Net

.NET Array Dictionary List String 2D Async DataTable Dates DateTime Enum File For Foreach Format IEnumerable If IndexOf Lambda LINQ Parse Path Process Property Regex Replace Sort Split Static StringBuilder Substring Switch Tuple

Java

Core Array ArrayList HashMap String 2D Cast Character Console Deque Duplicates File For Format HashSet If IndexOf Lambda Math ParseInt Process Random Regex Replace Sort Split StringBuilder Substring Switch Vector While

TheDeveloperBlog.com

Computer Graphics Programs

Computer Graphics Programs

Write a Program to draw basic graphics construction like line, circle, arc, ellipse and rectangle.

Write a Program to draw animation using increasing circles filled with different colors and patterns.

Program to make screen saver in that display different size circles filled with different colors and at random places.

Write a Program to make a moving colored car using inbuilt functions.

Write a Program to print your name in Hindi script on console output in C.

Write a Program control a ball using arrow keys.

Write a Program to implement Digital Clock.

Write a Program to make puzzle game.

Write a Program to implement bouncing ball using sine wave form.

Write a Program to implement Bouncing Ball in vertical direction.

Write a program of Translation, Rotation, and Scaling using Composite Transformation.

Write a program to draw a Circle using midpoint implementation Method.

Write a program to draw Bezier curve.

Program to rotate a rectangle about its midpoint

Program to clip a line using Liang Barsky Method

Program to implement Standard Perspective Projection in 3-Dimensions.

Program to implement Parallel Projection in 3-Dimensions.

Program to draw Sine, Cosine and Tangent Curves

Related Links:

.Net

Java

Related Links