Practical -9 || Computer Graphics || Fractal .cpp

#include <iostream.h>
#include <conio.h>
#include <math.h>
#include <stdlib.h>
#include <dos.h>
#include <graphics.h>

//todo Fractal Triangle
int fractalTriangle(double x1, double y1, double x2, double y2, double x3, double y3, int c);
int fractalTriangle(double x1, double y1, double x2, double y2, double x3, double y3, int c)
{
    c++;
    if (c == 8)
    {
        return 2;
    }
    line((x1 + x2) / 2, (y1 + y2) / 2, (x2 + x3) / 2, (y2 + y3) / 2);
    line((x2 + x3) / 2, (y2 + y3) / 2, (x1 + x3) / 2, (y1 + y3) / 2);
    line((x1 + x2) / 2, (y1 + y2) / 2, (x1 + x3) / 2, (y1 + y3) / 2);
    fractalTriangle(x1, y1, (x1 + x2) / 2, (y1 + y2) / 2, (x1 + x3) / 2, (y1 + y3) / 2, c);
    fractalTriangle(x2, y2, (x1 + x2) / 2, (y1 + y2) / 2, (x2 + x3) / 2, (y2 + y3) / 2, c);
    fractalTriangle(x3, y3, (x1 + x3) / 2, (y1 + y3) / 2, (x2 + x3) / 2, (y2 + y3) / 2, c);
}

void main()
{
    clrscr();
    int gd = DETECT, gm;
    double x1, y1, x2, y2, x3, y3;
    initgraph(&gd, &gm, "C:\\TURBOC3\\BGI");
    cleardevice();
    cout << "The Fractal Triangle";
    cout << "Enter the 3 Vertices of Triangle as (x,y)\n";
    cin >> x1 >> y1;
    cin >> x2 >> y2;
    cin >> x3 >> y3;
    line(x1, y1, x2, y2);
    line(x2, y2, x3, y3);
    line(x3, y3, x1, y1);
    fractalTriangle(x1, y1, x2, y2, x3, y3, 0);
    getch();
}