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Nov 23rd, 2014
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  1. #include <GL/glut.h>
  2.  
  3. /* Deklaracije callback funkcija. */
  4. static void on_display(void);
  5.  
  6. int main(int argc, char **argv)
  7. {
  8. /* Inicijalizuje se GLUT. */
  9. glutInit(&argc, argv);
  10. glutInitDisplayMode(GLUT_RGB | /*GLUT_DEPTH | */ GLUT_DOUBLE);
  11.  
  12. /* Kreira se prozor. */
  13. glutInitWindowSize(300, 300);
  14. glutInitWindowPosition(100, 100);
  15. glutCreateWindow(argv[0]);
  16.  
  17. /* Registruju se callback funkcije. */
  18. glutDisplayFunc(on_display);
  19.  
  20. /* Obavlja se OpenGL inicijalizacija. */
  21. glClearColor(0.75, 0.75, 0.75, 0);
  22. glEnable(GL_DEPTH_TEST);
  23.  
  24. /* Program ulazi u glavnu petlju. */
  25. glutMainLoop();
  26.  
  27. return 0;
  28. }
  29.  
  30. static void on_display(void)
  31. {
  32. /* Brise se prethodni sadrzaj prozora. */
  33. glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  34.  
  35. /* Kreira se plavi kvadrat. */
  36. glColor3f(0, 0, 1);
  37. glBegin(GL_POLYGON);
  38. glVertex3f(-0.5, -0.5, 0);
  39. glVertex3f(-0.5, 0.5, 0);
  40. glVertex3f(0.5, 0.5, 0);
  41. glVertex3f(0.5, -0.5, 0);
  42. glEnd();
  43.  
  44. /* Kreira se zeleni trougao. */
  45. glColor3f(0, 0.5, 0);
  46. glBegin(GL_POLYGON);
  47. glVertex3f(-0.9, -0.9, 0);
  48. glVertex3f(-0.9, -0.5, 0);
  49. glVertex3f(-0.5, -0.9, 0);
  50. glEnd();
  51.  
  52. /* Kreira se crveni trougao. */
  53. glColor3f(1, 0, 0);
  54. glBegin(GL_POLYGON);
  55. glVertex3f(0.9, 0.9, 0);
  56. glVertex3f(0.9, 0.5, 0);
  57. glVertex3f(0.5, 0.9, 0);
  58. glEnd();
  59.  
  60. /* Nova slika se salje na ekran. */
  61. glutSwapBuffers();
  62. }
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