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#include <string>
#include <iostream>
#include <fstream>
#include "FloodMap.h"
using namespace std;
FloodMap::FloodMap(string infile){
ifstream file;
file.open(infile.c_str());
file >> rows;
file >> cols;
file.get();
map = new pixel*[rows];
for (int i = 0; i < rows; i++) {
map[i] = new pixel[cols];
}
for(int i = 0; i < rows; i++){
for(int j = 0; j < cols; j++){
file >> map[i][j].r;
map[i][j].b = map[i][j].r;
map[i][j].g = map[i][j].r;
}
}
file.close();
}
FloodMap::~FloodMap(){
for (int i = 0; i < rows; i++) {
delete[] map[i];
}
delete[] map;
}
void FloodMap::scaleData(){
int old_max = map[0][0].r;
int old_min = map[0][0].r;
double old_range = 0;
for(int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
if (map[i][j].r < old_min) {
old_min = map[i][j].r;
}
if (map[i][j].r > old_max) {
old_max = map[i][j].r;
}
}
}
old_range = (old_max - old_min);
for(int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
int val = ((map[i][j].r - old_min) / old_range) * 255;
map[i][j].r = val;
map[i][j].g = val;
map[i][j].b = val;
}
}
}
void FloodMap::saveToDisk(std::string outfile){
ofstream fOut;
fOut.open(outfile.c_str());
fOut << "P3" << endl;
fOut << cols << " " << rows << endl;
fOut << "255 " << endl;
fOut << " " ;
for(int i = 0; i < rows; i++){
for(int j = 0; j < cols; j++){
fOut << map[i][j].r << " ";
fOut << map[i][j].g << " ";
fOut << map[i][j].b << " ";
}
}
fOut.close();
cout << "saved" << endl;
}
void FloodMap::flood(int r, int c, int height){
int tempVar = 0;
if (r < 0 || r >= rows){
return;
}
if (c < 0 || c >= cols){
return;
}
if(map[r][c].g == 225){
return;
}
if (height < map[r][c].r){
return;
}
tempVar = map[r][c].r;
map[r][c].r = 0;
map[r][c].g = 225;
map[r][c].b = 0;
flood(r+1, c, tempVar);
flood(r-1, c, tempVar);
flood(r, c+1, tempVar);
flood(r, c-1, tempVar);
flood(r+1, c+1, tempVar);
flood(r-1, c+1, tempVar);
flood(r+1, c-1, tempVar);
flood(r-1, c-1, tempVar);
}
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