#include <GL/glut.h>

void InitGL(void)
{
    glClearColor(0.0, 0.8, 0.8, 0.0);
    glClearDepth( 1.0 );
    glEnable( GL_DEPTH_TEST ); //rysowanie z glebią ekranu
}
void text(char*string)
{
	char*p;
	for(p=string;*p;p++)
				glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24,	*p);
}

void reshape(int w, int h)
{
    GLdouble aspect = (GLdouble) w / h;
    glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode(GL_PROJECTION);    //macierz projekcji
glLoadIdentity();               //zerowanie macierzy
if (w <= h)
glOrtho(-250.0, 250, -250./ aspect, 250.0/ aspect, -100, 100);
else
    glOrtho (-250.*aspect, 250.*aspect, -250, 250, -100.0, 100);
glMatrixMode(GL_MODELVIEW);     //macierz wyglądu
glLoadIdentity();

}

void displayCallBack(void)
{
    glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); //czyszczenie buforów

    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
    glColor3d(0.1,0.3,0);
glRotatef(15, 1, 1, 0);
glRotatef(15,0,1,0);
glutSolidCube(100);

 glLoadIdentity();
 glColor3d(0,0,0);
 glRasterPos2f(-200,200);
 text("Biblioteka GLUT:teskst");

    glFlush();

    glutSwapBuffers();  //zamienia bufory
}

void main(int argc, char** argv)
{
  glutInit(&argc, argv);

  glutInitDisplayMode( GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE );
  glutInitWindowSize(600, 600);
  glutCreateWindow("Program_1");


  InitGL();

  float pos[4] = { 1.50F, 3.50F, 0.25F, 0.00F };
  float dir[3] = {-1, -1, -1};
  glEnable(GL_COLOR_MATERIAL);
  glEnable(GL_LIGHTING);
  glEnable(GL_LIGHT0);

  glLightfv(GL_LIGHT0, GL_POSITION, pos);
  glLightfv(GL_LIGHT0, GL_SPOT_DIRECTION, dir);


  glutReshapeFunc(reshape);
  glutDisplayFunc(displayCallBack);
  glutMainLoop();

}