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January 26, 2018 17:11
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svg-drag
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| license: mit |
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.
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .active { | |
| stroke: #000; | |
| stroke-width: 2px; | |
| } | |
| </style> | |
| <svg width="960" height="500"> | |
| </svg> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var svg = d3.select("svg"), | |
| width = +svg.attr("width"), | |
| height = +svg.attr("height"), | |
| radius = 32; | |
| var circles = d3.range(20).map(function() { | |
| return { | |
| x: Math.round(Math.random() * (width - radius * 2) + radius), | |
| y: Math.round(Math.random() * (height - radius * 2) + radius) | |
| }; | |
| }); | |
| var defs = svg.append('defs'); | |
| var filter = defs.append('filter').attr('id','gooeyCodeFilter'); | |
| filter.append('feGaussianBlur') | |
| .attr('in','SourceGraphic') | |
| .attr('stdDeviation','12') | |
| .attr('color-interpolation-filters','sRGB') | |
| .attr('result','blur'); | |
| filter.append('feColorMatrix') | |
| .attr('in','blur') | |
| .attr('mode','matrix') | |
| .attr('values','1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 19 -9') | |
| .attr('result','gooey'); | |
| var color = d3.scaleOrdinal() | |
| .range(["#a6cee3","#1f78b4","#b2df8a","#33a02c","#fb9a99","#e31a1c","#fdbf6f","#ff7f00","#cab2d6","#6a3d9a","#ffff99","#b15928"]); | |
| var node = svg.append('g') | |
| .attr('class', 'nodes') | |
| .style('filter', 'url(#gooeyCodeFilter)') | |
| .selectAll("circle") | |
| .data(circles) | |
| .enter() | |
| .append("circle") | |
| .attr("cx", function(d) { return d.x; }) | |
| .attr("cy", function(d) { return d.y; }) | |
| .attr("r", radius) | |
| .style("fill", function(d, i) { return color(i); }) | |
| .call(d3.drag() | |
| .on("start", dragstarted) | |
| .on("drag", dragged) | |
| .on("end", dragended)) | |
| .transition() | |
| .duration(2500) | |
| .delay(function(d) { return d.x * 20; }) | |
| .on("start", reposition); | |
| function dragstarted(d) { | |
| d3.select(this).transition(); | |
| d3.select(this).raise().classed("active", true); | |
| } | |
| function dragged(d) { | |
| d3.select(this) | |
| .attr("cx", d.x = d3.mouse(this)[0]) | |
| .attr("cy", d.y = d3.mouse(this)[1]); | |
| } | |
| function dragended(d) { | |
| d3.select(this) | |
| .classed("active", false) | |
| .transition() | |
| .duration(2500) | |
| .on("start", reposition); | |
| } | |
| function reposition() { | |
| var circle = d3.select(this); | |
| (function repeat() { | |
| circle = circle.transition() | |
| .duration(2000) | |
| .attr("cx", function(d) { return Math.round(Math.random() * (width - radius * 2) + radius); }) | |
| .attr("cy", function(d) { return Math.round(Math.random() * (height - radius * 2) + radius); }) | |
| .transition() | |
| .on("end", repeat); | |
| })(); | |
| } | |
| </script> |
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