How does google do the barrel roll?

If you Google, 'do a barrel roll', the whole page does a 360 rotation. Does anyone have any guesses as to how Google is doing this? I disabled javascript, and it still occurred, so maybe a css rotation?

If you look at the css code :

body {
    -moz-animation-duration: 4s;
    -moz-animation-iteration-count: 1;
    -moz-animation-name: roll;
}

Leo

As said above, with CSS3 animations and transform.

Wesbo showed a way to apply the effect on any site. You can view a demo and instruction here.

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

@-moz-keyframes roll {
from { -moz-transform: rotate(0deg) }
to   { -moz-transform: rotate(360deg) }
}

@keyframes roll {
from { transform: rotate(0deg) }
to   { transform: rotate(360deg) }
}

body {
-moz-animation-name: roll;
-moz-animation-duration: 4s;
-moz-animation-iteration-count: 1;
-webkit-animation-name: roll;
-webkit-animation-duration: 4s;
-webkit-animation-iteration-count: 1;
}

It's a CSS Transition: https://developer.mozilla.org/en/CSS/CSS_transitions

-moz-transform: rotate(360deg);
-moz-transition-property: all;
-moz-transition-duration: 5s;

Example for Mozilla above, use -o and -webkit to target other browsers.

It uses custom CSS animations. See the CSS rules applied to the <body> here:

body {
    -moz-animation-name: roll;
    -moz-animation-duration: 4s;
    -moz-animation-iteration-count: 1;
    -o-animation-name: roll;
    -o-animation-duration: 4s;
    -o-animation-iteration-count: 1;
    -webkit-animation-name: roll;
    -webkit-animation-duration: 4s;
    -webkit-animation-iteration-count: 1;
}

sounds like a css3 rotation transformation applied to either the body or html tags

vectorash

Add a link with something like that:

javascript:(function(){var s=document.createElement('style');s.innerHTML='%40-moz-keyframes roll { 100%25 { -moz-transform: rotate(360deg); } } %40-o-keyframes roll { 100%25 { -o-transform: rotate(360deg); } } %40-webkit-keyframes roll { 100%25 { -webkit-transform: rotate(360deg); } } body{ -moz-animation-name: roll; -moz-animation-duration: 4s; -moz-animation-iteration-count: 1; -o-animation-name: roll; -o-animation-duration: 4s; -o-animation-iteration-count: 1; -webkit-animation-name: roll; -webkit-animation-duration: 4s; -webkit-animation-iteration-count: 1; }';document.getElementsByTagName('head')[0].appendChild(s);}());

This guy will do the trick on any webpage:

@-moz-keyframes roll {
    from { -moz-transform: rotate(0deg) }
    to   { -moz-transform: rotate(360deg) }
}
body {
    -moz-animation-name: roll;
    -moz-animation-duration: 4s;
    -moz-animation-iteration-count: 1;
   }

Remember that this is for firefox.

if you want infinite

 @-moz-keyframes spin { 100% { -moz-transform: rotate(360deg); } }
 @-webkit-keyframes spin { 100% { -webkit-transform: rotate(360deg); } }
 @keyframes spin { 100% { -webkit-transform: rotate(360deg); transform:rotate(360deg); } }
 body{-webkit-animation: spin 9.9s infinite linear;}

来源：https://stackoverflow.com/questions/8000194/how-does-google-do-the-barrel-roll

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