FractalMacazito

#include <iostream>
#include <graphics.h>
#include <math.h>

using namespace std;

int WIDTH = 600;
int HEIGHT = 600;
int length = 100;

typedef struct punct
{
    float x;
    float y;
} PUNCT;

/// deseneaza segmentul AB
void DeseneazaLinie(PUNCT A, PUNCT B)
{
    line(A.x,A.y,B.x,B.y);
}

/// returneaza un punct la lungimea length fata de punctul A la unghiul angle fata de orizontala
PUNCT PunctNou(PUNCT A,float length,float angle)
{
    float x = A.x, y = A.y;
    float new_x,new_y;
    float angle_radians=2*3.141592*angle/360;
    new_x=x+length*cos(angle_radians);
    new_y=y-length*sin(angle_radians);

    PUNCT P;
    P.x = new_x;
    P.y = new_y;

    return P;
}

/// deseneaza forma de ordin "order"

void DrawShape( PUNCT A, float length, float angle, bool isMirrored, int order )
{
    PUNCT B,C,D,E,F,G;

    if( !isMirrored )
    {
        B = PunctNou(A,length,angle-90);
        C = PunctNou(B,2*length,angle);
        D = PunctNou(B,length,angle);
        E = PunctNou(A,length/sqrt(5),angle-26.56);
        F = PunctNou(E,2*length/sqrt(5),angle-26.56);
        G = PunctNou(E,length/sqrt(5),angle-90-26.56);
    }
    else if( isMirrored )
    {
        B = PunctNou(A,length,angle-90);
        C = PunctNou(B,2*length,angle-180);
        D = PunctNou(B,length,angle-180);
        E = PunctNou(A,length/sqrt(5),angle-180+26.56);
        F = PunctNou(E,2*length/sqrt(5),angle-180+26.56);
        G = PunctNou(B,length/sqrt(5),angle+90+26.56);
    }

    DeseneazaLinie(A,B);
    DeseneazaLinie(B,C);
    DeseneazaLinie(A,C);

    if( order > 1 )
    {
        if( !isMirrored )
        {
            DrawShape(A,length/sqrt(5),angle+90-26.56,!isMirrored,order-1);
            DrawShape(E,length/sqrt(5),angle-26.56,isMirrored,order-1);
            DrawShape(B,length/sqrt(5),angle+180-26.56,!isMirrored,order-1);
            DrawShape(D,length/sqrt(5),angle+180-26.56,!isMirrored,order-1);
            DrawShape(D,length/sqrt(5),angle+180-26.56,isMirrored,order-1);
        }
        else if( isMirrored )
        {
            DrawShape(A,length/sqrt(5),angle-90+26.56,!isMirrored,order-1);
            DrawShape(E,length/sqrt(5),angle+26.56,isMirrored,order-1);
            DrawShape(B,length/sqrt(5),angle-180+26.56,!isMirrored,order-1);
            DrawShape(D,length/sqrt(5),angle-180+26.56,!isMirrored,order-1);
            DrawShape(D,length/sqrt(5),angle-180+26.56,isMirrored,order-1);
        }
    }
}

int main()
{
    PUNCT A;

    A.x = WIDTH-30;
    A.y = HEIGHT/2;

    initwindow(WIDTH,HEIGHT);

    for( int order = 1 ; order <= 6 ; order++ )
    {
        cleardevice();
        DrawShape(A,(WIDTH-60)/2,0,1,order);
        outtextxy(150, 30, "Press any key...");
        getch();
    }

    return 0;
}