make css3 transition rotate always in the same direction

Question

I am trying to have a front-/backside div flipping always in the same direction. I implemented the flip with css and javascript, but I have a hard time thinking about how to make it always rotate to the right, instead of rotate to the right and then coming back to the left.

I basically use a div with the follwing css

  /* flip speed goes here */
  .flipper {
    -webkit-transition: 0.6s;
    -webkit-transform-style: preserve-3d;

    -moz-transition: 0.6s;
    -moz-transform-style: preserve-3d;

    -o-transition: 0.6s;
    -o-transform-style: preserve-3d;

    transition: 0.6s;
    transform-style: preserve-3d;

    position: relative;
    border-radius: 5px;
  -webkit-border-radius: 5px;
    padding: 5px;
    margin-left: 3px;
    z-index: 3;
    width: 160px;
    height: 145px;
    display:block; 
  }

and when the user clicks on it I add the class "flipped" to the div which changes the css to this:

      /* flip the pane when hovered */
  .flip-container.flipped .flipper {
    -webkit-transform: rotateY(180deg);
    -moz-transform: rotateY(180deg);
    -o-transform: rotateY(180deg);
    transform: rotateY(180deg);
  }

should I just increment always the rotation angle? any other ideas?

Here is the current status and the full css in a fiddle

Answer 1

I don't think that it can be done with transforms. May be you can do it with keyframes. A similar code:

@-webkit-keyframes rotate1 {
    from {-webkit-transform: rotate(0deg)}
    to {-webkit-transform: rotate(180deg)}
}
@-webkit-keyframes rotate2 {
    from {-webkit-transform: rotate(180deg)}
    to {-webkit-transform: rotate(360deg)}
}

#rotable {
    background-color: red;
    -webkit-animation-name: rotate2;
    -webkit-animation-duration: 3s;
    -webkit-transform: rotate(180deg); 
}

#rotable:hover {
    background-color: yellow;
    -webkit-animation-name: rotate1;
    -webkit-animation-duration: 3s;
}

does a similar thing to what you want. Notice that the turning direction is always the same.

Another posibility, mixing transition and animation (for the change where the transition would go in the opposite direction ...)

.container {
  perspective: 500px;
}

.test {
  transform: rotate(360deg);
  transition: transform 4s;
}

.container:hover .test {
  transform: rotateY(180deg);
  animation: turn 4s;
}

@keyframes turn {
  from {transform: rotate(0deg);}
}

div {
  display: inline-block;
  width: 200px;
  height: 200px;
}

.test {
    background-color: lightblue;  

}

<div class="container">
<div class="test">TEST</div>
</div>