// Informatik - Serie 11 - Skriptaufgabe 125
// Prog: GehrigManuela.cpp
// Author: Manuela Gehrig
// Draw turtle graphics for the Lindenmayer system with
// productions X -> X+YF+, Y -> -FX-Y, initial word X
// and rotation angle 90 degrees
#include
#include
void y (const unsigned int i);
void z (const unsigned int i);
// POST: w_i^X is drawn
void x (const unsigned int i) {
if (i > 0) {
ifm::forward();
z(i);
ifm::right(90);
y(i-1);
}
}
void y (const unsigned int i)
{
if (i > 0) {
ifm::forward ();
ifm::right (90);
z(i);
x(i-1);
ifm::forward();
ifm::left (90);
x(i-1);
}
}
void z (const unsigned int i)
{
if (i > 0) {
ifm::left(60);
ifm::forward();
ifm::right (60);
}
}
int main () {
std::cout << "Number of iterations =? ";
unsigned int n;
std::cin >> n;
// draw w_n = w_n^X
x(n);
return 0;
}
