title: Issue understanding CALayer Geometry. Need Assistance
body: <p>I am trying to understand calayer geometry but having issue understanding this</p>
  <ul>
  <li><p><strong>Position</strong> (Its clear to me)</p>
  </li>
  <li><p><strong>Bounds</strong>
  (Apple docs says)The bounds property is a CGRect that provides the size of the layer (bounds.size) and the origin (bounds.origin).</p>
  </li>
  </ul>
  <blockquote>
  <p>The bounds origin is used as the origin of the graphics context when
  you override a layer's drawing methods.</p>
  <p>I did't get this point regarding bounds.</p>
  </blockquote>
  <ul>
  <li><strong>Frame</strong>
  (Apple docs says)</li>
  </ul>
  <blockquote>
  <p>Layers have an implicit frame that is a function of the position,
  bounds, anchorPoint, and transform properties. Setting a new frame
  rectangle changes the layer's position and bounds properties
  appropriately, but the frame itself is not stored. When a new frame
  rectangle is specified the bounds origin is undisturbed, while the
  bounds size is set to the size of the frame. The layer's position is
  set to the proper location relative to the anchor point. When you get
  the frame property value, it is calculated relative to the position,
  bounds, and anchorPoint properties.</p>
  <p>but this is lot more complex and different then this <a href="http://www.scribd.com/doc/7670972/Standford-CS-193P-05Views-Animation" rel="nofollow noreferrer">Stanford university lecture slide 19</a></p>
  </blockquote>
  <ul>
  <li><strong>AnchorPoint</strong> This in the end playing with bounds...making my head spin</li>
  </ul>
  <p>Need help.</p>
  <p>Thanks, Regards.</p>