title: AngularJS write on an image with canvas
body: <p>I have an image in my <code>html</code> that I get with an id:</p>
  
  <pre><code>&lt;img id={{idImage}} ng-src="http://localhost:3000/images/{{idImage}}"/&gt;
  </code></pre>
  
  <p>I have in one of my scope some coordinate (x, y, w, h).</p>
  
  <p>In my controller: </p>
  
  <pre><code>$scope.coordinate;
  </code></pre>
  
  <p>But I don't know how to draw with canvas on the image according to the coordinates.</p>
  
  <p>Thanks for your help!</p>