title: How to draw a rectangle in a cell throught relative position of it within the cell that contains it?
body: <p>I have the property <code>RelativePosition</code> in class <code>MapItem</code> is the relative position of the working point within the cell that contains it. The two components of the vector are always in the range <em>[0,1]</em>.  In our example image below the corrdinates would be something like <em>(0.25, 0.05)</em>.
   Each item has a property <em>RelativePosition</em> which is a Vector that defines the working point position relative to the item. For example <em>(0,0)</em> is the top-left corner and <em>(1,1)</em> is the bottom-right.</p>
  
  <p><a href="https://i.stack.imgur.com/PSmPW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PSmPW.png" alt="enter image description here"></a></p>
  
  <p>How to draw a rectangle in a cell throught relative position ? Thanks for help me?</p>