Fast prototyping of apps using Sketch and d3.js, please refer to the the explanatory post.
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August 29, 2015 14:00
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Fast prototyping tricks - Transition along invisible path
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
width: 960px; | |
padding-top: 40px; | |
margin: auto; | |
position: relative; | |
} | |
svg { | |
width: 100%; | |
max-height: 400px; | |
} | |
</style> | |
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
<script type='text/javascript'> | |
function animateGrowingCircle(fromRadius, toRadius) { | |
var animateFunction = function () { | |
d3.select(this) | |
.attr('r', fromRadius) | |
.transition() | |
.duration(1000) | |
.attr('r', toRadius) | |
.transition() | |
.duration(1000) | |
.attr('r', fromRadius) | |
.each('end', function () { | |
d3.select(this).each(animateFunction); | |
}); | |
}; | |
return animateFunction; | |
} | |
function translateAlongPath(path, offset) { | |
var l = path.getTotalLength(); | |
var tx = offset[0], | |
ty = offset[1]; | |
return function() { | |
return function(t) { | |
var p = path.getPointAtLength(t * l); | |
d3.select(this) | |
.attr('cx', p.x + tx) | |
.attr('cy', p.y + ty); | |
}; | |
}; | |
} | |
function reload() { | |
d3.select('svg').remove(); | |
d3.xml('iPhone.svg', 'image/svg+xml', function (error, data) { | |
d3.select('body').node().appendChild(data.documentElement); | |
var svg = d3.select('svg'); | |
var mainScreen = svg.select('#MainScreen'); | |
var animationElements = mainScreen.select('#AnimationElements'); | |
animationElements.style('display', 'none'); | |
var replayButton = mainScreen.select('#ReplayButton') | |
.style('display', 'none') | |
.style('opacity', 0.0) | |
.style('cursor', 'pointer') | |
.on('click', reload); | |
var circle = mainScreen.select('#Circle'); | |
var offset = d3.transform(animationElements.attr('transform')).translate; | |
var motionPath = mainScreen.select('#MotionPath'); | |
circle.transition() | |
.duration(2500) | |
.ease('bounce') | |
.tween('translateAlongPath', translateAlongPath(motionPath.node(), offset)) | |
.each('end', function () { | |
var circleAnimationMaxRadius = animationElements.select('#CircleAnimationMaxRadius'); | |
var r = +circle.attr('r'); | |
var r2 = +circleAnimationMaxRadius.attr('r'); | |
replayButton | |
.style('display', 'block') | |
.transition() | |
.duration(1000) | |
.style('opacity', 1.0); | |
d3.select(this) | |
.each(animateGrowingCircle(r, r2)); | |
}); | |
}); | |
} | |
window.addEventListener('load', function () { | |
reload(); | |
}); | |
</script> |
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