Graphics - Fractile.cpp

#include <gl/glut.h>
#include <cstdlib> // for rand function
#include <iostream>


GLfloat vertices[3][2] = { {0.0,0.0},{250.0,500.0},{500.0,0.0} };
int i, j, k;
GLfloat p[2] = { 75.0,50.0 };
GLfloat a = 0.5; // parameter of line - for finding the middle between two points

void display() {
	glClear(GL_COLOR_BUFFER_BIT);
	glBegin(GL_POINTS);

	for (k = 0; k < 3000000; k++)
	{
		j = rand() % 3;
		p[0] = p[0] + a * (vertices[j][0] - p[0]);
		p[1] = p[1] + a * (vertices[j][1] - p[1]);
		glVertex2fv(p);
	}

	glEnd();
	glFlush();
}

void init() {
	glClearColor(1.0, 1.0, 1.0, 1.0);
	glColor3f(0.0, 0.0, 0.0);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	gluOrtho2D(0.0, 500, 0.0, 500);
	glMatrixMode(GL_MODELVIEW);
}

int main(int argc, char** argv)
{
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
	glutInitWindowSize(1000,1000);
	glutInitWindowPosition(0, 0);
	glutCreateWindow("Sajad Kolahchi - Graphics - Fractile");
	glutDisplayFunc(display);
	init();
	glutMainLoop();
}