BRESENHAM'S CIRCLE DRAWING ALGORITHM - Computer Graphics - Lab Experiment - IT Department - Final Year

#include

#include

void main()

{

 int gd=DETECT,gm;

 int xcenter,ycenter,radius;

 int p,x,y;

 initgraph(&gd,&gm,"c:\\tc\\bgi");

 x=0;

 printf("Enter The Radius Value:\n");

 scanf("%d",&radius);

 y=radius;

 printf("Enter The xcenter and ycenter Values:\n");

 scanf("%d%d",&xcenter,&ycenter);

 plotpoints(xcenter,ycenter,x,y);

 p=1-radius;

 while(x

 {

  if(p<0 font="">

  x=x+1;

  else

  {

   x=x+1;

   y=y-1;

  }

  if(p<0 font="">

  p=p+2*x+1;

  else

  p=p+2*(x-y)+1;

  plotpoints(xcenter,ycenter,x,y);

 }

 getch();

}

int plotpoints(int xcenter,int ycenter,int x,int y)

{

 putpixel(xcenter+x,ycenter+y,1);

 putpixel(xcenter-x,ycenter+y,1);

 putpixel(xcenter+x,ycenter-y,1);

 putpixel(xcenter-x,ycenter-y,1);

 putpixel(xcenter+y,ycenter+x,1);

 putpixel(xcenter-y,ycenter+x,1);

 putpixel(xcenter+y,ycenter-x,1);

 putpixel(xcenter-y,ycenter-x,1);

 return 0;

}