---

Point.h
#ifndef POINT_H
#define POINT_H

class Point {
public:
    float x, y;
    Point();
    Point(float x, float y);
};

#endif

Point.cpp
#include "Point.h"

Point::Point() {
    x = 0;
    y = 0;
}

Point::Point(float x, float y) {
    this->x = x;
    this->y = y;
}

Fractal.h
#ifndef FRACTAL_H
#define FRACTAL_H
#include "Point.h"

class Fractal {
public:
    static void generateFractal(const Point& T0, const Point& T1, const Point& T2, int iterations);
};

#endif

Fractal.cpp
#include "Fractal.h"
#include "glut.h"
#include <cstdlib>

void drawPoint(float x, float y) {
    glBegin(GL_POINTS);
    glVertex2f(x, y);
    glEnd();
    glFlush();
}

void Fractal::generateFractal(const Point& T0, const Point& T1, const Point& T2, int iterations) {
    int r = rand() % 3;
    Point cur;
    if (r == 0) cur = T0;
    else if (r == 1) cur = T1;
    else cur = T2;

    Point next;

    for (int i = 0; i < iterations; i++) {
        r = rand() % 3;
        const Point& Ti = (r == 0) ? T0 : ((r == 1) ? T1 : T2);

        next.x = (cur.x + Ti.x) / 2.0f;
        next.y = (cur.y + Ti.y) / 2.0f;

        drawPoint(next.x, next.y);
        cur = next;
    }
}

main.cpp
#include <iostream>
#include <ctime>
#include <cstdlib>
#include "glut.h"
#include "Point.h"
#include "Fractal.h"

void myInit() {
    glClearColor(1, 1, 1, 0);
    glColor3f(0, 0, 0);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluOrtho2D(0, 640, 0, 640);
}

void myDisplay() {
    glClear(GL_COLOR_BUFFER_BIT);
    glBegin(GL_POINTS);
    Point T0(150.0, 300.0);
    Point T1(300.0, 150.0);
    Point T2(440.0, 440.0);
    glVertex2f(T0.x, T0.y);
    glVertex2f(T1.x, T1.y);
    glVertex2f(T2.x, T2.y);
    Fractal::generateFractal(T0, T1, T2, 50000);
    glEnd();
    glFlush();
}

int main(int argc, char** argv) {
    srand((unsigned int)time(NULL));
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
    glutInitWindowSize(640, 640);
    glutCreateWindow("lab1_compgraphic: fractal");
    glutDisplayFunc(myDisplay);
    myInit();
    glutMainLoop();
    return 0;
}