computer-graphics/floodfill.cpp at main · alphacommits/computer-graphics · GitHub

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#include<stdio.h>
#include<conio.h>
#include<graphics.h>
void fourflood(int,int,int,int);
void floodfill(int,int ,int ,int);
int main()
{
    int gd=DETECT, gm,ch;
    initgraph(&gd, &gm, "");
	printf("choose: 1-> 4 connected flood fill OR 2-> eight connected flood fill: \n");
	scanf("%d",&ch);
    rectangle(50,50,250,250);
    switch (ch)
    {
    	case 1:
    		fourflood(55,55,10,0);
    		break;
    	case 2:
    		floodfill(70,70,0,15);
    		break;
    	default:
    		printf("wrong choice!");
	}
getch();
return 0;
}
void fourflood(int x,int y,int fillColor, int defaultColor)
{
    if(getpixel(x,y)==defaultColor)
    {
        putpixel(x,y,fillColor);
        fourflood(x+1,y,fillColor,defaultColor);
        fourflood(x-1,y,fillColor,defaultColor);
        fourflood(x,y+1,fillColor,defaultColor);
        fourflood(x,y-1,fillColor,defaultColor);
    }
}
void floodfill(int x,int y,int old,int newcol)
{
            int current;
                current=getpixel(x,y);
                if(current==old)
                {

                                putpixel(x,y,newcol);
                                floodfill(x+1,y,old,newcol);
                                floodfill(x-1,y,old,newcol);
                                floodfill(x,y+1,old,newcol);
                                floodfill(x,y-1,old,newcol);
                                floodfill(x+1,y+1,old,newcol);
                                floodfill(x-1,y+1,old,newcol);
                                floodfill(x+1,y-1,old,newcol);
                                floodfill(x-1,y-1,old,newcol);
                }
}