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koch.cpp
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koch.cpp
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/*
* File: show_koch.cpp
* Author: Jesse W. Walker
* Derived from http://cs.berea.edu/courses/csc226/tasks/koch-curve.py
*/
#include "CTurtle.hpp"
namespace ct = cturtle;
void koch(ct::Turtle& turtle, int order, float size){
const int ANGLES[] = {60, -120, 60, 0};
if(order == 0){
turtle.forward(size);
}else{
for(int i = 0; i < 4; i++){
koch(turtle, order-1, size/3.0f);
turtle.left(ANGLES[i]);
}
}
}
int main(int argc, char** argv) {
ct::TurtleScreen scr;
scr.delay(0);
ct::Turtle turtle(scr);
turtle.speed(ct::TS_FASTEST);
//Move the turtle backwards to get the
//full fractal on screen.
turtle.penup();
turtle.back(250);
turtle.pendown();
//Call the recursive "Koch" function.
koch(turtle, 5, 500.0f);
scr.exitonclick();
return 0;
}