OpenGL, problems with GL_MODELVIEW GL_PROJECTION

Question

Guys, I\'m trying to finish up my homework but I\'m having some problems here on these models on openGL... any Idea why is my draw not happening? One thing that strange is that

Answer 1

The polygon you draw is outside of the volume set up by glOrtho(). You will only see points with Z coordinate between -1 and 1.

This part of your code will cause drawing outside of that range.

glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0, 0.0, -5.0);

Either replace the glOrtho()'s last 2 parameters to something like -10, +10 or remove that glTranslatef()