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kochSnowflake.cpp
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kochSnowflake.cpp
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//koch snowflake
#include <string>
#include <iostream>
#include <fstream>
#include <cmath>
std::string drawFlake(int n);
std::string drawSnowflake(int n){
// draw starting point
// appends commands from recursive call to string
//starts with equilateral triangle
return drawFlake(n) + "- - " + drawFlake(n) + "- - " + drawFlake(n);
}
std::string drawFlake(int n){
//base case //if 0 move forward to complete fractal
if (n == 0) {
return "F ";
}
//recursive call//if not last iteration continue splitting into 4 parts
else {
std::string subFlake = drawFlake(n-1);
//appends 4 different lines together to create full fractal
return subFlake + "+ " + subFlake + "- - " + subFlake + "+ " + subFlake;
}
}
void save(std::string filename, std::string Lsystem){
//write commands to file
std::ofstream file;
file.open(filename);
file << Lsystem;
file.close();
}
int main(int argc, char **argv){
//amount of times it goes
int n = std::stoi(argv[1]);
//each time 1 line is split to 4
std::string Lsystem = drawSnowflake(n);
save("l-system.txt", Lsystem);
}