/*
Koch Curve
*/
#include<graphics.h>
#include<stdlib.h>
#include<stdio.h>
#include<math.h>
#define pi M_PI
typedef struct{
double x,y;
}point;
void kochCurve(point p1,point p2,int times){
point p3,p4,p5;
double theta = pi/3;
if(times>0)
{
p3 = (point)((2*p1.x+p2.x)/3,(2*p1.y+p2.y)/3);
p5 = (point)((2*p2.x+p1.x)/3,(2*p2.y+p1.y)/3);
p4 = (point)(p3.x + (p5.x - p3.x)*cos(theta) + (p5.y - p3.y)*sin(theta),p3.y - (p5.x - p3.x)*sin(theta) + (p5.y - p3.y)*cos(theta));
kochCurve(p1,p3,times-1);
kochCurve(p3,p4,times-1);
kochCurve(p4,p5,times-1);
kochCurve(p5,p2,times-1);
}
else{
line(p1.x,p1.y,p2.x,p2.y);
}
}
int main(int argC, char** argV)
{
int w,h,r;
point p1,p2;
if(argC!=4){
printf("Usage : %s <window width> <window height> <recursion level>",argV[0]);
}
else{
w = atoi(argV[1]);
h = atoi(argV[2]);
r = atoi(argV[3]);
initwindow(w,h,"Koch Curve");
p1 = (point){10,h-10};
p2 = (point){w-10,h-10};
kochCurve(p1,p2,r);
getch();
closegraph();
}
return 0;
}
Koch Curve
*/
#include<graphics.h>
#include<stdlib.h>
#include<stdio.h>
#include<math.h>
#define pi M_PI
typedef struct{
double x,y;
}point;
void kochCurve(point p1,point p2,int times){
point p3,p4,p5;
double theta = pi/3;
if(times>0)
{
p3 = (point)((2*p1.x+p2.x)/3,(2*p1.y+p2.y)/3);
p5 = (point)((2*p2.x+p1.x)/3,(2*p2.y+p1.y)/3);
p4 = (point)(p3.x + (p5.x - p3.x)*cos(theta) + (p5.y - p3.y)*sin(theta),p3.y - (p5.x - p3.x)*sin(theta) + (p5.y - p3.y)*cos(theta));
kochCurve(p1,p3,times-1);
kochCurve(p3,p4,times-1);
kochCurve(p4,p5,times-1);
kochCurve(p5,p2,times-1);
}
else{
line(p1.x,p1.y,p2.x,p2.y);
}
}
int main(int argC, char** argV)
{
int w,h,r;
point p1,p2;
if(argC!=4){
printf("Usage : %s <window width> <window height> <recursion level>",argV[0]);
}
else{
w = atoi(argV[1]);
h = atoi(argV[2]);
r = atoi(argV[3]);
initwindow(w,h,"Koch Curve");
p1 = (point){10,h-10};
p2 = (point){w-10,h-10};
kochCurve(p1,p2,r);
getch();
closegraph();
}
return 0;
}
