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Interactive 3D Dodecahedron in CSS3

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Interactive 3D Dodecahedron in CSS3

· Web Dev Zone ·
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Thursday's CSS3 bitmaps were clever and fun, but a little counter-HTML5-cultural: the whole point of SVG, Canvas, and so forth, is that vectors are better, because simpler, than bitmaps.

Today's interactive geometric CSS3 shape is just the opposite: far more pixels than pre-rendering could possibly justify, emphatically composed of 2D surfaces, and fully animated in 3D.

It's a folding/unfolding dodecahedron (not in FF/IE):

On to the code:

Because it's a simple shape, the div-organization is too plain to be interesting. 

The CSS is more satisfying -- with each side-pentagon transformed around x, y, and z axes, as dodecahedronity requires:

#dodecahedron.closed #group5 {
	-webkit-transform: rotateZ(-324deg) rotateX(63deg);
	-moz-transform: rotateZ(-324deg) rotateX(63deg);
	transform: rotateZ(-324deg) rotateX(63deg);
}

and each pentagon defined with gratuitously pleasing transparency:

.p2 {
    position: absolute;
    left: 0px;
    top: 0px;
    width: 0;
    height: 0;
    border-bottom: 59px solid #ff0000;
    border-left: 81px solid transparent;
    border-right: 81px solid transparent;
}

The JavaScript is what you might guess after a few seconds' interaction -- but is written efficiently and clearly enough to merit a look.

Worth checking out, as an excellent, direct instantiation of several cool CSS3 elements.

Deploying code to production can be filled with uncertainty. Reduce the risks, and deploy earlier and more often. Download this free guide to learn more. Brought to you in partnership with Rollbar.

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