Implementation of Bresenhams algorithm - Circle

 1.b.) Implementation of Bresenhams algorithm - Circle  

Program : 

#include "stdio.h"

#include "conio.h"

#include "math.h"

#include "graphics.h"

          main()

          {

                    int gd=DETECT,gm;

                    int xcenter,ycenter,radius;

                    int p,x,y;

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

                    x=0;

                    printf("\n Enter The Radius Value: ");

                    scanf("%d",&radius);

                    y=radius;

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

                    scanf("%d%d",&xcenter,&ycenter);

                    plotpoints(xcenter,ycenter,x,y);

                    p=1-radius;

                    while(x<y)

                    {

                             if(p<0)

                                       x=x+1;

                             else

                              {

                                       x=x+1;

                                       y=y-1;

                             }

                             if(p<0)

                                       p=p+2*x+1;

                             else

                                       p=p+2*(x-y)+1;

                     plotpoints(xcenter,ycenter,x,y);

                   }

            getch();

            return(0);

          }

          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;

          }

Output :

Enter The Radius Value                       :     80

                   

Enter The xcenter and ycenter Values :      230    260

Implementation of Bresenhams algorithm - Line

 1.a.) Implementation of Bresenhams algorithm - Line  

Program : 


// Constraint : Slope must be 0 < m < 1

#include "stdio.h"

#include "conio.h"

#include "math.h"

#include "graphics.h"

main()

{

                    int gd=DETECT,gm;

                    int xa,xb,ya,yb;

                    int dx,dy,x,y,xend,p;

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

                    printf("\n Enter The Two Left Endpoints(xa,ya): ");

                    scanf("%d%d",&xa,&ya);

                    printf("\n Enter The Two Right Endpoints(xb,yb): ");

                    scanf("%d%d",&xb,&yb);

                    dx=abs(xa-xb);

                    dy=abs(ya-yb);

                    p=2*dy-dx;

                    if(xa>xb)

                    {

                             x=xb;

                             y=yb;

                             xend=xa;

                    }

          else

{       

                             x=xa;

                              y=ya;

                              xend=xb;

}

      putpixel(x,y,6);

    while(x<xend)

      {

      x=x+1;

      if(p<0)

      {

      p=p+2*dy;

      }

      else                

      {

      y=y+1;

      p=p+2*(dy-dx);                

      }

      putpixel(x,y,6);

      }

   getch();

   return(0);

}

Output :

Enter The Two Left Endpoints(xa,ya):       234    124

Enter The Two Right Endpoints(xb,yb):    578    321

Anna University Chennai Result April - May 2011

Anna University Chennai Result April - May 2011
Affiliated Colleges - Result of UG/PG April/May 2011 Examinations - Mark System Affiliated Colleges - Result of UG/PG April/May 2011 Examinations - Credit System Affiliated colleges - Revaluation Results of B.E/B.Tech April/May-2011 Examinations
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