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Amazing UI with CSS and Anima.js
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fwdays
March 05, 2013
Programming
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Amazing UI with CSS and Anima.js
fwdays
March 05, 2013
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Transcript
Amazing UI with CSS and anima.js Yehor Lvivski @lvivski www.lvivski.com
Programmers love their code.
Languages • Haskell, Scala, Erlang, Clojure • Java, C#, Objective-C
• Ruby, Python, PHP • Javascript
Patterns MVC 1970s MVVM 2010s ... MV* 2050s
VIEW
VIEW
None
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Xerox PARC 1979
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35 years since 1979
None
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Javascript + CSS
CSS has everything • 3Dtransforms • Transitions • Animations •
Events
CSS has limitations
CSS, Bad parts • Not easy to stop animation once
started • You have to deal with percent • Limited user control
anima.js github.com / lvivski / anima
Stats • 25kB (4kB minified and gziped) • 4 weeks
of development • 2 week after public release • ≈600 stargazers
Animation loop
API
API var world = anima.js(); var world = anima.css();
var item = world.add( document .querySelector("div") ); item.animate(...).css();
.animate() item.animate({ translate: [x, y, z],
duration: 500, ease: 'ease-‐in-‐out-‐quad', delay: 100 })
Method chaining item.animate(...) .animate(...) .animate(...) .infinite()
Parallel animations item.animate( [ { translate: [x,
y, z], duration: 500 }, ... ] )
How it works
None
Matrix matrix3d( 1, 0, 0, 0, 0,
1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 )
Scale & Translate matrix3d( sX, 0,
0, 0, 0, sY, 0, 0, 0, 0, sZ, 0, tX, tY, tZ, 1 )
Rotate matrix3d( cos(Y)cos(Z), cos(X)cos(Z)
+sin(X)sin(Y)cos(Z), sin(X)sin(Z) -‐cos(X)sin(Y)cos(Z), 0, ... )
Multiply
None
Decomposition
None
Matrix decomposition • A×B≠B×A • scale×rotate×translate
Pull Requests
Thanks @lvivski