// Informatik - Serie 11 - Skriptaufgabe 125
// Program: WehnerDavid.cpp
// Autor: David Wehner
// Iterations: 5
// Draw a fruit-bearing tree (the two functions are taken from the programs of last year
// written by Quintin Meier and Patrick Pietsch.
#include
#include
#include
#include
using namespace std;
using namespace ifm;
void f (unsigned int i) // "fruit"
{
if (i == 0)
ifm::forward(); // F
else {
f(i-1); // w_{i-1}^F
ifm::left(40);
ifm::forward();
ifm::right(10); // +
f(i-1); // w_{i-1}^F
ifm::right(20); // +
}
}
void w (int n)//branch grows; its length being determined by its position
{
forward (50*n+100);
if (n==0) f(8);
}
void k (int n)//new branches; angles determined at random
{
if (n!=0)
{
save();
left(rand()%81-40);
w(n-1);
save();
left(rand()%81-40);
w(n-1);
k(n-1);
restore();
k(n-1);
restore();
if (rand()%2==0)
{
save();
right(rand()%81-40);
w(n-1);
k(n-1);
restore();
}
right(rand()%81-40);
w(n-1);
save();
k(n-1);
restore();
left(rand()%81-40);
w(n-1);
k(n-1);
}
}
int main()//main function
{
int n;
cout<<"This program draws a fruit-bearing tree.\n" << "Please enter the number of iterations (5 would be quite a good idea):\n";
cin >> n;
left (90);
w(n);
k(n);
return 0;
}
