5. Disa vizatime te tjera ne openGL duke perdorur primitivat gjeometrike

Vizatimi I objektit te meposhtem eshte realizuar duke bere bashkimin e njepasnjeshem te disa kulmeve glVertex me GL_LINE_LOOP. I njejti objekt do te mund te vizatohej duke perdorur bashkimin e  disa vijave te njepasnjeshme me gGL_LINES por zgjedhja eshte ne doren tone.

Ushtrim:

Ndertoni ne OpenGl nje program qe vizaton nje objekt ne formen e shtepise

#include<gl/glut.h>

void Display()

{

  glClear(GL_COLOR_BUFFER_BIT);

  glBegin(GL_LINE_LOOP);

  glColor3f(0.0,0.0,0.0);

  glVertex2f(10.0,10.0);

  glVertex2f(30.0,10.0);

  glVertex2f(30.0,30.0);

  glVertex2f(20.0,40.0);

  glVertex2f(10.0,30.0);

  glEnd();

  glFlush();

}

void init()

{

  glClearColor(1.0,0.0,0.0,1.0);

  glViewport(0,0,320,240);

  gluOrtho2D(0.0,160.0,0.0,120.0);

}

int main(int argc,char* argv [])

{

  glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);

  glutInitWindowSize(320,240);

  glutCreateWindow("Shtepi");

  init();

  glutDisplayFunc(Display);

  glutMainLoop();

}

Ushtrim : Vizatoni nje shtepi me dere,dritare dhe cati

#include<gl/glut.h>

void Display()

{

  glClear(GL_COLOR_BUFFER_BIT);

  glBegin(GL_QUADS);

  glColor3f(0.0,1.0,0.0);

  glVertex2f(8.0,5.0);

  glVertex2f(40.0,5.0);

  glVertex2f(40.0,25.0);

  glVertex2f(8.0,25.0);

  glColor3f(0.5,0.3,0.2);

  glVertex2f(20.0,5.0);

  glVertex2f(25.0,5.0);

  glVertex2f(25.0,13.0);

  glVertex2f(20.0,13.0);

  glVertex2f(15.0,15.0);

  glVertex2f(20.0,15.0);

  glVertex2f(20.0,20.0);

  glVertex2f(15.0,20.0);

  glVertex2f(25.0,15.0);

  glVertex2f(30.0,15.0);

  glVertex2f(30.0,20.0);

  glVertex2f(25.0,20.0);

  glEnd();

  glBegin(GL_TRIANGLES);

  glVertex2f(2.0,25.0);

  glVertex2f(45.0,25.0);

  glVertex2f(25.0,40.0);

  glEnd();

  glFlush();

}

void init()

{

  glClearColor(0.0,0.0,0.0,1.0);

  glViewport(0,0,320,240);

  gluOrtho2D(0.0,160.0,0.0,120.0);

}

int main(int argc,char* argv[])

{

  glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);

  glutInitWindowSize(300,300);

  glutCreateWindow("Shtepi");

  init();

  glutDisplayFunc(Display);

  glutMainLoop();

}