Bresenham.cpp

#include <stdio.h>
#include <iostream>
#include <cstdio>
#include <GL/glut.h>

using namespace std;

int x1, x2, y1, y2, z1, z2 = 0;

void point3d(int x, int y, int z) {
  glPushMatrix();{
    glTranslatef(x, y, z);
    glutSolidSphere (0.1, 16, 16);
  }
  glPopMatrix();
}

void display () {
  glClear (GL_COLOR_BUFFER_BIT);
  glPushMatrix();{
    glScalef(0.1, 0.1, 0.1);
    point3d (0, 0, 0);
    point3d (0, 1, 1);
    point3d (0, 2, 2);

  }
  glPopMatrix();
  glFlush ();
}

void init () {
  glClearColor (0.0, 0.0, 0.0, 1.0);
}

int main (int argc, char *argv[]) {
  x1 = 0 ;
  y1 = 0;
  x2 = 1 ;
  y2 = 100;
  glutInit (&argc, argv);
  glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
  glutInitWindowSize (320, 240) ;
  glutCreateWindow ("Bresenham's Algorithm");
  init ();
  glutDisplayFunc (display);
  glutMainLoop ();
  return 0;
}