CODEWITHSUNDEEP
javascriptjqueryhtmlcssanimation
endymion1818
endymion1818

Reputation: 485

Complex CSS Animation Repeating - use Javascript?

I have a CSS animation which is quite complex, ie. it's layered, or brings in two images, one a background image, then an <img> tag inside that, to overlay the original.

Demo is here: http://wdb.blazeoven.co.uk/

HTML:

  <div class="container">
<a href="services.php">
  <div class="col-sm-3 home-circle" id="one">
      <img class="bottom" id="five" src="/assets/img/prop-consultants.png" alt="residential block in grounds">
  </div>
</a>
<a href="services.php">
  <div class="col-sm-3 home-circle" id="two">
    <img class="bottom" id="six" src="/assets/img/chartered-surveyors.png" alt="old residential house doorways">
  </div>
</a>
<a href="services.php">
  <div class="col-sm-3 home-circle" id="three">
    <img class="bottom" id="seven" src="/assets/img/managing-agents.png" 
      alt="row of shops">
  </div>
</a>
<a href="services.php">
  <div class="col-sm-3 home-circle" id="four">
    <img class="bottom" id="eight" src="/assets/img/city-central.png" alt="City shop premises">
  </div>
</a>

CSS:

@-webkit-keyframes fadeOut { from { opacity:1; } to { opacity:0; } }
@-moz-keyframes fadeOut { from { opacity:1; } to { opacity:0; } }
@keyframes fadeOut { from { opacity:1; } to { opacity:0; } }
@-webkit-keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@-moz-keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }

.home-banner .container a .col-sm-3 {
   opacity:0; 
   -webkit-animation:fadeIn ease-in 1; 
   -moz-animation:fadeIn ease-in 1;
   animation:fadeIn ease-in 1;

   -webkit-animation-fill-mode:forwards; 
   -moz-animation-fill-mode:forwards;
   animation-fill-mode:forwards;

   -webkit-animation-duration:1s;
   -moz-animation-duration:1s;
   animation-duration:1s;
  }

.home-banner #one {
  background:url('/assets/img/propcons.svg') center no-repeat;
  background-size: 100%;

  -webkit-animation-delay: 0.4s;
  -moz-animation-delay: 0.4s;
  animation-delay: 0.4s;
}
.home-banner #two {
  background:url('/assets/img/charsurv.svg') center no-repeat;
  background-size: 100%;

  -webkit-animation-delay: 0.8s;
  -moz-animation-delay: 0.8s;
  animation-delay: 0.8s;
}
.home-banner #three {
  background:url('/assets/img/manage.svg') center no-repeat;
  background-size: 100%;

  -webkit-animation-delay: 1.4s;
  -moz-animation-delay: 1.4s;
  animation-delay: 1.4s;
}
.home-banner #four {
  background:url('/assets/img/citycen.svg') center no-repeat;
  background-size: 100%;

  -webkit-animation-delay: 1.8s;
  -moz-animation-delay: 1.8s;
  animation-delay: 1.8s;
}
.grey-banner img.bottom {
 opacity:1;
 -webkit-animation:fadeOut ease-in 1; 
 -moz-animation:fadeOut ease-in 1;
 animation:fadeOut ease-in 1;

 // -webkit-animation-direction: alternate;
 // -moz-animation-direction: alternate;
 // animation-direction: alternate;


 -webkit-animation-fill-mode:forwards; 
 -moz-animation-fill-mode:forwards;
 animation-fill-mode:forwards;

 -webkit-animation-duration:1s;
 -moz-animation-duration:1s;
 animation-duration:1s;
}
.grey-banner img#five {
-webkit-animation-delay: 6.8s;
-moz-animation-delay: 6.8s;
animation-delay: 6.8s;
}

.grey-banner img#six {
-webkit-animation-delay: 7.4s;
-moz-animation-delay: 7.4s;
animation-delay: 7.4s;
}

.grey-banner img#seven {
-webkit-animation-delay: 8s;
-moz-animation-delay: 8s;
animation-delay: 8s;
}
.grey-banner img#eight {
-webkit-animation-delay: 8.6s;
-moz-animation-delay: 8.6s;
animation-delay: 8.6s;
}

Trouble is, the client is requesting that it repeats again. That is, it plays in reverse, then starts again.

I have tried unsuccessfully to do this with CSS, is there a succinct way to do it with Javascript?

Thanks in advance for your comments.

Ben

Upvotes: 0

Views: 79

Answers (2)

awe
awe

Reputation: 22462

You can repeat the animation using animation-iteration-count:

-moz-animation-iteration-count: 3; /* Firefox 5 -> 15 */
-webkit-animation-iteration-count: 3; /* Chrome, Safari, Opera */
animation-iteration-count: 3; /* Firefox 16, IE 10 */

Not supported in IE 9 and earlier.

You can also use the value infinite to repeat over and over.

Edit:

As I commented you can try with cubic-bezier:
Use no delay, and animation-duration:10s. You can try with these cubic-bezier values on the animation-timing-function for the four images:

animation-timing-function: cubic-bezier(0.2, 0.0, 0.0, 1.5);
animation-timing-function: cubic-bezier(0.4,-0.7, 0.4, 1.8);
animation-timing-function: cubic-bezier(0.7,-1.7, 0.7, 1.8);
animation-timing-function: cubic-bezier(0.9,-1.6, 0.8, 0.8);

I have not tried this myself, and I am not sure how well it works with the values that are < 0 and > 1 (which is not standard).

If you want to play around with how the cubic-bezier is set up, you can use the tool at http://cubic-bezier.com to help finding useful values.

Upvotes: 1

Phillip
Phillip

Reputation: 6253

You said the your client just wanted the animation to play normally, then play in reverse and then repeat.

It so happens that there is a CSS property called animation-direction. This property states whether the animation plays normally or in reverse. Use animation-direction: alternate; to – as the property value indicates – alternate between playing normally and in reverse.

Read more here: MDN: animation-direction

Hope this helps :)

Upvotes: 1

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