Change element scale by scroll (zoom by scroll)

Question

As recommended by other users, I post a new question in order to ask for help with a scaling issue, instead of trying to complete the already existing one : similar question. I am trying to set up a zoom by scroll on a specific element on a page (an image). At first I used transform : scale(number); But it seems to mess up the overflow preventing to fully scroll the image (a part of the image on the left and the top is hidden). I couldn't find a way to be able to fully scroll the image AND set the transform origin on the mouse position. I am currently trying to find a workaround by putting the image inside a div container and changing the container width/height. It seems to be working pretty good, the only issue is with setting the offset of the div in order to match the mouse position (what setting transform-origin was doing pertty well)...

Here is my code with both methods to zoom in... The mouseWheel js is from some random sites which had a demo on it, I don't think it's the latest version. As you can see, I can zoom in and out, but then I can't fully scroll the objects, I have fixed it a bit by putting the objects inside an other div, but it messes the position up so it does not sound like a solution...

#container1 {
  position: fixed;
  width: 300px;
  height: 200px;
  border: 1px solid #000000;
  left: 0px;
  top: 0px;
  margin-left: 10px;
  margin-top: 10px;
  overflow: auto;
  display: block;
  text-align: center;
}
#object1 {
  position: absolute;
  width: 100px;
  height: 100px;
  display: inline-block;
  background-color: rgba(255, 0, 255, 0.45);
  margin: auto;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  border-radius: 25px;
}
#container2 {
  position: fixed;
  width: 300px;
  height: 200px;
  border: 1px solid #000000;
  left: 0px;
  top: 0px;
  margin-left: 330px;
  margin-top: 10px;
  overflow: auto;
  display: block;
  text-align: center;
}
#object2 {
  position: absolute;
  width: 100px;
  height: 100px;
  display: inline-block;
  background-color: rgba(0, 0, 255, 0.45);
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  border-radius: 25px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://owlcarousel.owlgraphic.com/assets/vendors/jquery.mousewheel.min.js"></script>
<div id="container1">

  <div id="object1"></div>

</div>

<div id="container2">

  <div id="object2"></div>

</div>

<script type="text/javascript">
  var scale = 1;
  var object2 = document.getElementById("object2");
  $('#object2').on("mousewheel", function(event) {
    scale += event.deltaY < 1 ? -0.3 : 0.3;
    scale = scale < 1 ? 1 : scale;
    scale = scale > 5 ? 5 : scale;
    object2.style.transform = "scale(" + scale + ")";
    object2.style.transformOrigin = event.offsetX + "px " + event.offsetY + "px";
    event.preventDefault();
  });
  var scale2 = 1;
  var object1 = document.getElementById("object1");
  $('#object1').on("mousewheel", function(event) {
    scale2 += event.deltaY < 1 ? -0.3 : 0.3;
    scale2 = scale2 < 1 ? 1 : scale2;
    scale2 = scale2 > 5 ? 5 : scale2;
    object1.style.width = (100 * scale2) + "px";
    object1.style.height = (100 * scale2) + "px";
    event.preventDefault();
  });
</script>

Here is the same thing with a container div, just so you can see how it messes up the position :

#container1 {
  position: fixed;
  width: 300px;
  height: 200px;
  border: 1px solid #000000;
  left: 0px;
  top: 0px;
  margin-left: 10px;
  margin-top: 10px;
  overflow: auto;
  display: block;
  text-align: center;
}
#objectContainer {
  position: relative;
  width: 100px;
  height: 100px;
  margin: auto;
  bottom: 0;
  right: 0;
}
#object1 {
  position: absolute;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  display: inline-block;
  background-color: rgba(255, 0, 255, 0.45);
  margin: auto;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  border-radius: 25px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://owlcarousel.owlgraphic.com/assets/vendors/jquery.mousewheel.min.js"></script>
<div id="container1">
  <div id="objectContainer">
    <div id="object1"></div>
  </div>
</div>
<script type="text/javascript">
  var scale2 = 1;
  var container1 = document.getElementById("objectContainer");
  $('#object1').on("mousewheel", function(event) {
    scale2 += event.deltaY < 1 ? -0.3 : 0.3;
    scale2 = scale2 < 1 ? 1 : scale2;
    scale2 = scale2 > 5 ? 5 : scale2;
    container1.style.width = (100 * scale2) + "px";
    container1.style.height = (100 * scale2) + "px";
    event.preventDefault();
  });
</script>