A PROGRAM FOR POLYGON FILLING USING BONUDRY FILL ALGORITHM

#include<stdio.h>

#include<conio.h>

#include<iostream.h>

#include<conio.h>

#include<stdlib.h>

#include<graphics.h>

 void Floodfill(int,int,int,int);

void MidPoint(int);

void main()  {

int xCenter=320;

int yCenter=240;

int gDriver=DETECT,gmode,errorcode;

initgraph(&gDriver,&gMode,"c:\\TC\\BGI");

cleardevice();

MidPoint(49);

FloodFill(xCenter+1,yCenter+1,0,8);

getch();

return;

}

void MidPoint(int Radius)  {

int iCntr,x,y,p0;

x=0;

y=Radius;

int xCenter=320;

int yCenter=240;

p0=(5/4)-Radius;

putpixel(xCenter+x,yCenter+y,15);

putpixel(xCenter-x,yCenter+y,15);

putpixel(xCenter+x,yCenter-y,10);

putpixel(xCenter-x,yCenter-y,10);

putpixel(xCenter+y,yCenter+x,12);

putpixel(xCenter-y,yCenter+x,12);

putpixel(xCenter+y,yCenter-x,9);

putpixel(xCenter-y,yCenter-x,9);

while(x<=y)  {

if(p0<0)  {

p0=p0+2*(x+1)+1;

x=x+1;

}

Else  {

p0=po+2*(x+1)+1-2*(y-1);

x=x+1;

y=y-1;

}

putpixel(xCenter+x,yCenter+y,15);

putpixel(xCenter-x,yCenter+y,15);

putpixel(xCenter+x,yCenter-y,10);

putpixel(xCenter-x,yCenter-y,10);

putpixel(xCenter+y,yCenter+x,12);

putpixel(xCenter-y,yCenter+x,12);

putpixel(xCenter+y,yCenter-x,9);

putpixel(xCenter-y,yCenter-x,9);

}  }

void FloodFill(int pointx,int pointy,int OldColor,int NewColor)  {

int Intensity=getpixel(pointx,pointy);

if(Intensity==OldColor)  {

putpixel(pointx,pointy,NewColor);

FloodFill(pointx+1,pointy,OldColor,NewColor);

FloodFill(pointx-1,pointy,OldColor,NewColor);

FloodFill(pointx,pointy+1,OldColor,NewColor);

FloodFill(pointx,pointy-1,OldColor,NewColor);

}  }

                                                                         OUTPUT

 


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