title: buttons on scaled and rotated stage in pixi js does not respond to touch events
body: <p>I am working on a game with pixi js. to make the game look normalized on every screen,</p>
  <p>im scaled the stage as follows</p>
  <p><code>this.scale=Math.max(this.viewWidth, this.viewWidth) / (2048 * this.ratio);</code></p>
  <p>and on orientation change I am rotating the whole stage.</p>
  <p>now my problem is, if i have any buttons on stage, who ate at op or at right side of stage, they do not respond to any touch event. Please help im in a very big trouble.</p>
  <p>I tried to use <code>mappositiontopoint</code> as well. but didn't understand how to correctly use here.</p>
  <p>Please help</p>