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Program to draw a circle using MidPoint Circle Algorithm

Posted By: Easy Tutor     Category: C++ Programming     Views: 10458

Write a program to draw a circle using MidPoint Circle Algorithm.

Code for Program to draw a circle using MidPoint Circle Algorithm in C++ Programming

 # include <iostream.h>
 # include <graphics.h>
 # include    <conio.h>
 # include     <math.h>

 void show_screen( );

 void midpoint_circle(constint,constint,constint);

 int main( )
    {
       int driver=VGA;
       int mode=VGAHI;

       int h=0;
       int k=0;
       int r=0;

       do
      {
         show_screen( );

         gotoxy(8,10);
         cout<<"Central Point of the Circle : (h,k) :";

         gotoxy(8,11);
         cout<<"ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ";

         gotoxy(12,13);
         cout<<"Enter the value of h = ";
         cin>>h;

         gotoxy(12,14);
         cout<<"Enter the value of k = ";
         cin>>k;

         gotoxy(8,18);
         cout<<"Radius of the Circle : r :";

         gotoxy(8,19);
         cout<<"ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ";

         gotoxy(12,21);
         cout<<"Enter the value of r = ";
         cin>>r;

         initgraph(&driver,&mode,"..\\Bgi");

         setcolor(15);
           midpoint_circle(h,k,r);

         setcolor(15);
           outtextxy(110,460,"Press <Enter> to continue or any other key to exit.");

         int key=int(getch( ));

         if(key!=13)
        break;
      }
       while(1);

       return 0;
    }

 /*************************************************************************///-----------------------  midpoint_circle( )  --------------------------///*************************************************************************/void midpoint_circle(constint h,constint k,constint r)
    {
       int color=getcolor( );

       int x=0;
       int y=r;
       int p=(1-r);

       do
      {
         putpixel((h+x),(k+y),color);
         putpixel((h+y),(k+x),color);
         putpixel((h+y),(k-x),color);
         putpixel((h+x),(k-y),color);
         putpixel((h-x),(k-y),color);
         putpixel((h-y),(k-x),color);
         putpixel((h-y),(k+x),color);
         putpixel((h-x),(k+y),color);

         x++;

         if(p<0)
        p+=((2*x)+1);

         else
        {
           y--;
           p+=((2*(x-y))+1);
        }
      }
       while(x<=y);
    }

 /*************************************************************************///--------------------------  show_screen( )  ---------------------------///*************************************************************************/void show_screen( )
    {
       restorecrtmode( );
       textmode(C4350);

       cprintf("\n********************************************************************************");
       cprintf("*-***********************-                             -**********************-*");
       cprintf("*------------------------- ");

       textbackground(1);
       cprintf(" MidPoint Circle Algorithm ");
       textbackground(8);

       cprintf(" ------------------------*");
       cprintf("*-***********************-                             -**********************-*");
       cprintf("*-****************************************************************************-*");

       for(int count=0;count<42;count++)
      cprintf("*-*                                                                          *-*");

       gotoxy(1,46);
       cprintf("*-****************************************************************************-*");
       cprintf("*------------------------------------------------------------------------------*");
       cprintf("********************************************************************************");

       gotoxy(1,2);
    }

  
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Easy Tutor
Easy Tutor author of Program to draw a circle using MidPoint Circle Algorithm is from United States. Easy Tutor says

Hello Friends,

I am Free Lance Tutor, who helped student in completing their homework.

I have 4 Years of hands on experience on helping student in completing their homework. I also guide them in doing their final year projects.

I have share many programs on this website for everyone to use freely, if you need further assistance, than please contact me on easytutor.2ya [at the rate] gmail [dot] com

I have special discount scheme for providing tutor services. I am providing tutor service to students from various contries, currently most of my students are from United States, India, Australia, Pakistan, Germany, UK and Canada.

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Thanks,
Happy Programming :)

 
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