title: OpenGl GluLookAt to GlRotated and GlTranslated
body: <p>I dont understand how this GluLookAt works in OpenGl.</p>
  
  <p>I would like to know how to transform this two lines :</p>
  
  <pre><code>gluLookAt(5.0, 15.0, 2.0, 0.0, 0.0, 0.0, 1.0, 0.0, -1.0);
  gluLookAt(5.0, 0.0, 5.0, 0.0, 0.0, 0.0, 1.0, -1.0, 0.0);
  </code></pre>
  
  <p>using glRotatef and glTranslatef.</p>
  
  <p>After some searches, it seems to exist a way for making that thing :</p>
  
  <pre><code>glRotatef();
  glRotatef();
  glTranslatef(5.0,15.0,2.0);
  
  glRotatef();
  glRotatef();
  glTranslatef(5.0,0.0,5.0);
  </code></pre>
  
  <p>So just by using two rotations and one translation.
  But I dont understand how can i find the angles and the axes of these rotations.</p>