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Simple Implementation of Flood Fill Algorithm using C++
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#include <iostream> | |
#include <fstream> | |
using namespace std; | |
//Assume picture dimension is 10 letters X 25 letters | |
void printArray(char c[10][25]){ | |
for(int a=0;a<10;a++){ | |
for(int b=0;b<25;b++){ | |
cout<< c[a][b]; | |
} | |
cout<<"\n"; | |
} | |
} | |
void changeColor(char c[10][25], char oldChar, char newChar, int x, int y){ | |
if(x<0 || x>24 || y<0 || y>9){ | |
return; | |
} | |
if(c[y][x] != oldChar){ | |
return; | |
} | |
c[y][x] = newChar; | |
changeColor(c,oldChar,newChar,x,y-1); | |
changeColor(c,oldChar,newChar,x+1,y); | |
changeColor(c,oldChar,newChar,x,y+1); | |
changeColor(c,oldChar,newChar,x-1,y); | |
} | |
int main(){ | |
char array[10][25]; | |
ifstream input ("//home//tharindu//Documents//CodeLite//flood_fill_algo//input.txt"); | |
if (input.is_open()){ | |
while( !input.eof() ){ | |
for(int a=0;a<10;a++){ | |
for(int b=0;b<25;b++){ | |
input.get(array[a][b]); | |
} | |
input.get(); | |
} | |
} | |
}else{ | |
cout << "Image Not opened!"; | |
cin.get(); | |
return 0; | |
} | |
cout << "Starting image\n"; | |
cout << "------------------------\n\n"; | |
printArray(array); | |
int x,y; | |
cout << "X coordinate of the initial pixel: "; | |
cin >> x; | |
cout << "Y coordinate of the initial pixel: "; | |
cin >> y; | |
changeColor(array,array[x][y],'-',x,y); | |
cout << "After applying flood fill algorithm\n"; | |
cout << "------------------------\n\n"; | |
printArray(array); | |
return 0; | |
} |
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