Computer graphics program - Program for 4-connected boundary fill algorithm

Program for four connected boundary fill algorithm

Code

#include<stdio.h>

#include<graphics.h>

void main()

{

 int gd, gm;

 int x,y,b_col,f_col;

 void boundary(int,int,int,int);

 clrscr();

 detectgraph(&gd, &gm);

 initgraph(&gd, &gm, "C:\\TC\\BGI");

 printf("\n Enter x value:");

 scanf("%d",&x);

 printf("\n Enter y value:");

 scanf("%d",&y);

 printf("\n Enter boundary color:");

 scanf("%d",&b_col);

 printf("\n Enter fill color:");

 scanf("%d",&f_col);

 rectangle(150,150,200,200);

 boundary(x,y,f_col,b_col);

 getch();

 delay(100);

 closegraph();

}

void boundary(x, y, f_col, b_col)

int current;

current=getpixel(x,y);

if(current!=b_col&&current!=f_col)

   {

  putpixel(x, y, f_col);

  boundary(x+1, y, f_col, b_col);

  boundary(x-1, y, f_col, b_col);

  boundary(x, y+1, f_col, b_col);

  boundary(x, y-1, f_col, b_col);

   }

}