Skip to content

Instantly share code, notes, and snippets.

@lsbardel

lsbardel/.block

Last active January 3, 2017 14:54
Show Gist options
  • Save lsbardel/cf2f227b3fccd8e39600908f93038fcd to your computer and use it in GitHub Desktop.
Save lsbardel/cf2f227b3fccd8e39600908f93038fcd to your computer and use it in GitHub Desktop.
Download ZIP
Chained Canvas Transitions
Raw
.block
license: bsd-3-clause
Raw
README.md
Raw
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>d3 canvas transition</title>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://giottojs.org/d3-canvas-transition/0.3.3/d3-canvas-transition.js"></script>
</head>
<body>
<div id="paper">
<label>
<input id='svg' name="type" type="radio" checked>
<span>svg</span>
</label>
<label>
<input id='canvas' name="type" type="radio">
<span>canvas</span>
</label>
</div>
<div id="example" style="max-width: 960px"></div>
<script>
(function () {
d3.select('#svg').on('click', function () {
draw('svg');
});
d3.select('#canvas').on('click', function () {
draw('canvas');
});
if (d3.resolution() > 1) {
d3.select('#paper').append('label').html(
"<input id='canvas-low' name='type' type='radio'><span>canvas low resolution</span>"
);
d3.select('#canvas-low').on('click', function () {
draw('canvas', 1);
});
}
draw('svg');
function draw(type, r) {
var example = d3.select("#example"),
width = d3.getSize(example.style('width')),
height = Math.min(500, width);
example.select('.paper').remove();
var paper = example
.append(type)
.classed('paper', true)
.attr('width', width).attr('height', height).canvasResolution(r).canvas(true);
var margin = 40;
width = width - 2 * margin;
height = height - 2 * margin;
var y = d3.scalePoint().domain(d3.range(50)).range([0, height]);
var z = d3.scaleLinear()
.domain([10, 0])
.range(["hsl(62,100%,90%)", "hsl(228,30%,20%)"])
.interpolate(d3.interpolateHcl);
paper.append('g')
.attr("stroke", "black")
.attr("stroke-width", 1.5)
.attr("transform", "translate(" + margin + "," + margin + ")")
.selectAll("circle")
.data(y.domain())
.enter()
.append("circle")
.attr("r", 25)
.attr("cx", 0)
.attr("cy", y)
.style("fill", function (d) {
return z(Math.abs(d % 20 - 10));
})
.transition()
.duration(2500)
.delay(function (d) {
return d * 40;
})
.on("start", slide);
function slide() {
d3.active(this)
.attr("cx", width)
.transition()
.attr("cx", 0)
.transition()
.on("start", slide);
}
}
}());
</script>
</body>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment