title: OpenGL rotating a camera around a point
body: <p>In OpenGL I'm trying to rotate a camera around a point, with camera being distance r from the point and facing the point when it rotates.  In other words, I want the camera to move along the circumference  of a circle at a radius r from the center, with the camera facing the center at any point along the circumference.</p>
  
  <p>Lets say that in 3d space the center of the circle is (3, 0, 3);</p>
  
  <p>I've tried:</p>
  
  <pre><code>// move to center of circle    
  glTranslatef(-3, 0, -3)
  // move a distance away from the circle
  glTranslatef(0, 0, r);
  // rotate along the y "up" axis
  glRotatef(CameraAngle, 0, 1, 0);
  </code></pre>
  
  <p>where CameraAngle is the degrees being moved around the circle.</p>
  
  <p>My end result is the camera is still rotating along the origin, not the center of the circle.  Can anyone help me fix this problem?  Thanks!</p>