Last active
December 25, 2015 09:29
-
-
Save zawarudo/6953976 to your computer and use it in GitHub Desktop.
D3 ping effect on mouseover.
This file contains hidden or 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
| <html> | |
| <head> | |
| <script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script> | |
| </head> | |
| <body> | |
| <div id="chart"> | |
| </div> | |
| <script type="text/javascript"> | |
| var margin = {top: 50, right: 50, bottom: 50, left: 50}, | |
| w = 960 - margin.left - margin.right, | |
| h = 500 - margin.top - margin.bottom, | |
| //Circle Settings | |
| influence = 70,//Ring of influence size | |
| r = 10, | |
| color = '#CC6600', | |
| //Ping Animation Variables | |
| interval = 2000, //2 seconds | |
| pingSet = false;//Flag for preventing multiple ping effects | |
| //Generate Dataset | |
| var vertices = d3.range(30).map(function(d) { | |
| return [Math.random() * w, Math.random() * h, Math.random() * influence]; | |
| }); | |
| var svg = d3.select("#chart") | |
| .append("svg:svg") | |
| .attr("width", w + margin.left + margin.right) | |
| .attr("height", h + margin.top + margin.bottom); | |
| var points = svg.append("svg:g").attr("id", "points"); | |
| //Our pinging circle | |
| var hoverpoint = svg.append("svg:g") | |
| .append("svg:circle") | |
| .style("fill","none") | |
| .style("stroke-width", "3px"); | |
| //Plot Points | |
| points.selectAll("circle") | |
| .data(vertices) | |
| .enter().append("svg:circle") | |
| .attr("id", function(d, i) { | |
| return "point-"+i; }) | |
| .attr("cx", function(d) { | |
| return d[0]; }) | |
| .attr("cy", function(d) { | |
| return d[1]; }) | |
| .attr("influence", function(d){ | |
| return d[2]; }) | |
| .attr("fill", color) | |
| .attr("r", r) | |
| .on('mouseover', function(){ | |
| //Set hover circle on top of current point position | |
| hoverpoint | |
| .attr("cx" , this.getAttribute("cx")) | |
| .attr("cy" , this.getAttribute("cy")) | |
| .attr("influence", this.getAttribute("influence")); | |
| //Animate Ping | |
| if(!pingSet) {//Preventing multiple ping effects | |
| pingSet = true; | |
| d3.timer(ping(),interval); | |
| } | |
| } ) | |
| .on('mouseout', function(){ | |
| pingSet = false; | |
| }); | |
| var ping = function() { | |
| return function() { | |
| if(pingSet){ | |
| //Check to make sure we aren't pinging backwards | |
| var influence = hoverpoint.attr('influence'); | |
| var radius = ( r > influence ? 0 : r); | |
| hoverpoint | |
| .attr("stroke", "#FF0000")//Red | |
| .attr("r", r) | |
| .attr("stroke-width", "15px") | |
| .transition() //Trigger Animation | |
| .attr("stroke-width", "3px") | |
| .attr("r", influence) | |
| .attr("stroke", "#FFFAFA")//Light Red | |
| .duration(interval); | |
| //callback | |
| d3.timer(ping(hoverpoint),interval); | |
| return true; | |
| } | |
| } | |
| }; | |
| </script> | |
| </body> | |
| </html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment