Animation How to - Create spin animation with origin transform








Question

We would like to know how to create spin animation with origin transform.

Answer


<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
.slices {<!--   w  ww.j ava2  s  . c  om-->
    width: 100px;
    height: 100px;
    position: relative;
    margin-top: -31px;
    margin-left: -45px;
    transform-origin: right bottom;
}
#hold {
    width: 112px;
    height: 112px;
    border-radius: 50%;
    overflow: hidden;
    -webkit-animation: spin 2.8s infinite steps(8);
    -moz-animation: spin 2.8s infinite steps(8);
    -ms-animation: spin 2.8s infinite steps(8);
    -o-animation: spin 2.8s infinite steps(8);
    animation: spin 2.8s infinite steps(8);
}
.slices.bar div {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 35px;
    left: 45px;
    border-radius: 50%;
    transform-origin: 56px 52px;
}
@-webkit-keyframes spin {
    to {
        transform: rotate(1turn);
    }
}
@-moz-keyframes spin {
    to {
        transform: rotate(1turn);
    }
}
@-ms-keyframes spin {
    to {
        transform: rotate(1turn);
    }
}
@keyframes spin {
    to {
        transform: rotate(1turn);
    }
}
.slices.bar div:nth-child(1) {
    -webkit-transform: rotate(0deg);
    transform: rotate(0deg);
    background: linear-gradient(45deg, red 50%, transparent 50%) 0 0;
    background-repeat: no-repeat;
    background-size: 50% 50%;
}
.slices.bar div:nth-child(2) {
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
}
.slices.bar div:nth-child(3) {
    -webkit-transform: rotate(90deg);
    transform: rotate(90deg);
}
.slices.bar div:nth-child(4) {
    -webkit-transform: rotate(135deg);
    transform: rotate(135deg);
}
.slices.bar div:nth-child(5) {
    -webkit-transform: rotate(180deg);
    transform: rotate(180deg);
}
.slices.bar div:nth-child(6) {
    -webkit-transform: rotate(225deg);
    transform: rotate(225deg);
}
.slices.bar div:nth-child(7) {
    -webkit-transform: rotate(270deg);
    transform: rotate(270deg);
}
.slices.bar div:nth-child(8) {
    -webkit-transform: rotate(315deg);
    transform: rotate(315deg);
}
</style>
</head>
<body>
  <div id='hold'>
    <div class="slices bar">
      <div></div>
      <div></div>
      <div></div>
      <div></div>
      <div></div>
      <div></div>
      <div></div>
      <div></div>
    </div>
  </div>
</body>
</html>

The code above is rendered as follows: