Don't start animation until in view [closed] - css

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I was wondering how I could stop an animation from starting until it has been scrolled in to full view. I am using a plugin, animate.css by Dan Eden to animate my elements. I have added the animation and it works perfectly but I need to know how to make it only start once it is in full view.
This is the code for the element I have animated using class:
<div class="animated fadeInUp" id="enter-title"><img src="/images/welcome-text/enter.png" width="473" height="227"/></div>
This is the animation code:
#-webkit-keyframes fadeInUp {
0% {
opacity: 0;
-webkit-transform: translateY(20px);
}
100% {
opacity: 1;
-webkit-transform: translateY(0);
}
.animated.fadeInUp {
-webkit-animation-name: fadeInUp;
-moz-animation-name: fadeInUp;
-o-animation-name: fadeInUp;
animation-name: fadeInUp;
}

Answer 1

If you're looking to hold back the animation until the image is scrolled into view you could use a little jQuery like so:
Working Example
jQuery
$(window).scroll(function () {
var y = $(window).scrollTop(),
x = $('.animated').offset().top - 200;
if (y > x) {
$('.animated').addClass('fadeInUp').removeClass('fadeOutDown');
} else {
$('.animated').removeClass('fadeInUp').addClass('fadeOutDown');
}
});
CSS
.animated {
-webkit-animation-fill-mode:both;
-moz-animation-fill-mode:both;
-ms-animation-fill-mode:both;
-o-animation-fill-mode:both;
animation-fill-mode:both;
-webkit-animation-duration:1s;
-moz-animation-duration:1s;
-ms-animation-duration:1s;
-o-animation-duration:1s;
animation-duration:1s;
opacity:0; /*** Important Bit ***/
}
.animated.hinge {
-webkit-animation-duration:2s;
-moz-animation-duration:2s;
-ms-animation-duration:2s;
-o-animation-duration:2s;
animation-duration:2s;
}
#-webkit-keyframes fadeInUp {
0% {
opacity: 0;
-webkit-transform: translateY(20px);
}
100% {
opacity: 1;
-webkit-transform: translateY(0);
}
}
#-moz-keyframes fadeInUp {
0% {
opacity: 0;
-moz-transform: translateY(20px);
}
100% {
opacity: 1;
-moz-transform: translateY(0);
}
}
#-o-keyframes fadeInUp {
0% {
opacity: 0;
-o-transform: translateY(20px);
}
100% {
opacity: 1;
-o-transform: translateY(0);
}
}
#keyframes fadeInUp {
0% {
opacity: 0;
transform: translateY(20px);
}
100% {
opacity: 1;
transform: translateY(0);
}
}
.fadeInUp {
-webkit-animation-name: fadeInUp;
-moz-animation-name: fadeInUp;
-o-animation-name: fadeInUp;
animation-name: fadeInUp;
}
#-webkit-keyframes fadeOutDown {
0% {
opacity: 1;
-webkit-transform: translateY(0);
}
100% {
opacity: 0;
-webkit-transform: translateY(20px);
}
}
#-moz-keyframes fadeOutDown {
0% {
opacity: 1;
-moz-transform: translateY(0);
}
100% {
opacity: 0;
-moz-transform: translateY(20px);
}
}
#-o-keyframes fadeOutDown {
0% {
opacity: 1;
-o-transform: translateY(0);
}
100% {
opacity: 0;
-o-transform: translateY(20px);
}
}
#keyframes fadeOutDown {
0% {
opacity: 1;
transform: translateY(0);
}
100% {
opacity: 0;
transform: translateY(20px);
}
}
.fadeOutDown {
-webkit-animation-name: fadeOutDown;
-moz-animation-name: fadeOutDown;
-o-animation-name: fadeOutDown;
animation-name: fadeOutDown;
}
I added an additional animation to fade the image back out when you scroll back up, its optional, but I think it makes for a nice effect.

Answer 2

You need to constantly check if the element is in view each time the page is scrolled.
There is this neat jQuery plugin called Bullseye which might help you.