Created
February 26, 2016 21:59
-
-
Save whitews/3073773f5f1fd58226ee to your computer and use it in GitHub Desktop.
Pulsing circles on click in D3.js
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8"> | |
<title>Title</title> | |
<style> | |
svg { | |
background-color: #444455; | |
} | |
circle { | |
fill: #339933; | |
stroke: #ffffff; | |
} | |
</style> | |
<script type="text/javascript" src="https://d3js.org/d3.v3.min.js"></script> | |
</head> | |
<body> | |
</body> | |
<script type="text/javascript"> | |
var data = [ | |
{"x": 50, "y": 50, "pulse": false}, | |
{"x": 150, "y": 50, "pulse": false}, | |
{"x": 100, "y": 150, "pulse": false} | |
]; | |
var svg = d3.select("body") | |
.append("svg") | |
.attr("width", 200) | |
.attr("height", 200); | |
var plot_area = svg | |
.append("g") | |
.attr("id", "plot-area") | |
.attr("transform", "translate(0, 0)"); | |
var circles = plot_area.selectAll("circle").data(data); | |
circles.enter() | |
.append("circle") | |
.attr("r", 8) | |
.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }) | |
.attr("stroke-width", 2); | |
plot_area.selectAll("circle") | |
.on("click", function(d) { | |
d.pulse = !d.pulse; | |
if (d.pulse) { | |
var selected_circles = d3.select(this); | |
pulsate(selected_circles); | |
} | |
}); | |
function pulsate(selection) { | |
recursive_transitions(); | |
function recursive_transitions() { | |
if (selection.data()[0].pulse) { | |
selection.transition() | |
.duration(400) | |
.attr("stroke-width", 2) | |
.attr("r", 8) | |
.ease('sin-in') | |
.transition() | |
.duration(800) | |
.attr('stroke-width', 3) | |
.attr("r", 12) | |
.ease('bounce-in') | |
.each("end", recursive_transitions); | |
} else { | |
// transition back to normal | |
selection.transition() | |
.duration(200) | |
.attr("r", 8) | |
.attr("stroke-width", 2) | |
.attr("stroke-dasharray", "1, 0"); | |
} | |
} | |
} | |
</script> | |
</html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment