| license: lgpl-3.0 |
This block experiments the use of @veltman's flubber d3 plugin in order to transition back and forth from a rectangular treemap to a Voronoï treemap (computed thanks to @kcnarf's d3-voronoi-treemap plugin).
| { | |
| "name": "world", | |
| "children": [ | |
| { | |
| "name": "Asia", | |
| "color": "#f58321", | |
| "children": [ | |
| {"name": "China", "weight": 14.84, "code": "CN"}, | |
| {"name": "Japan", "weight": 5.91, "code": "JP"}, | |
| {"name": "India", "weight": 2.83, "code": "IN"}, | |
| {"name": "South Korea", "weight": 1.86, "code": "KR"}, | |
| {"name": "Russia", "weight": 1.8, "code": "RU"}, | |
| {"name": "Indonesia", "weight": 1.16, "code": "ID"}, | |
| {"name": "Turkey", "weight": 0.97, "code": "TR"}, | |
| {"name": "Saudi Arabia", "weight": 0.87, "code": "SA"}, | |
| {"name": "Iran", "weight": 0.57, "code": "IR"}, | |
| {"name": "Thaïland", "weight": 0.53, "code": "TH"}, | |
| {"name": "United Arab Emirates", "weight": 0.5, "code": "AE"}, | |
| {"name": "Hong Kong", "weight": 0.42, "code": "HK"}, | |
| {"name": "Israel", "weight": 0.4, "code": "IL"}, | |
| {"name": "Malasya", "weight": 0.4, "code": "MY"}, | |
| {"name": "Singapore", "weight": 0.39, "code": "SG"}, | |
| {"name": "Philippines", "weight": 0.39, "code": "PH"} | |
| ] | |
| }, | |
| { | |
| "name": "North America", | |
| "color": "#ef1621", | |
| "children": [ | |
| {"name": "United States", "weight": 24.32, "code": "US"}, | |
| {"name": "Canada", "weight": 2.09, "code": "CA"}, | |
| {"name": "Mexico", "weight": 1.54, "code": "MX"} | |
| ] | |
| }, | |
| { | |
| "name": "Europe", | |
| "color": "#77bc45", | |
| "children": [ | |
| {"name": "Germany", "weight": 4.54, "code": "DE"}, | |
| {"name": "United Kingdom", "weight": 3.85, "code": "UK"}, | |
| {"name": "France", "weight": 3.26, "code": "FR"}, | |
| {"name": "Italy", "weight": 2.46, "code": "IT"}, | |
| {"name": "Spain", "weight": 1.62, "code": "ES"}, | |
| {"name": "Netherlands", "weight": 1.01, "code": "NL"}, | |
| {"name": "Switzerland", "weight": 0.9, "code": "CH"}, | |
| {"name": "Sweden", "weight": 0.67, "code": "SE"}, | |
| {"name": "Poland", "weight": 0.64, "code": "PL"}, | |
| {"name": "Belgium", "weight": 0.61, "code": "BE"}, | |
| {"name": "Norway", "weight": 0.52, "code": "NO"}, | |
| {"name": "Austria", "weight": 0.51, "code": "AT"}, | |
| {"name": "Denmark", "weight": 0.4, "code": "DK"}, | |
| {"name": "Ireland", "weight": 0.38, "code": "IE"} | |
| ] | |
| }, | |
| { | |
| "name": "South America", | |
| "color": "#4aaaea", | |
| "children": [ | |
| {"name": "Brazil", "weight": 2.39, "code": "BR"}, | |
| {"name": "Argentina", "weight": 0.79, "code": "AR"}, | |
| {"name": "Venezuela", "weight": 0.5, "code": "VE"}, | |
| {"name": "Colombia", "weight": 0.39, "code": "CO"} | |
| ] | |
| }, | |
| { | |
| "name": "Australia", | |
| "color": "#00acad", | |
| "children": [ | |
| {"name": "Australia", "weight": 1.81, "code": "AU"} | |
| ] | |
| }, | |
| { | |
| "name": "Africa", | |
| "color": "#f575a3", | |
| "children": [ | |
| {"name": "Nigeria", "weight": 0.65, "code": "NG"}, | |
| {"name": "Egypt", "weight": 0.45, "code": "EG"}, | |
| {"name": "South Africa", "weight": 0.42, "code": "ZA"} | |
| ] | |
| }, | |
| {"name": "Rest of the World", | |
| "color": "#592c94", | |
| "children": [ | |
| {"name": "Rest of the World", "weight": 9.41, "code": "RotW"} | |
| ] | |
| } | |
| ] | |
| } |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> | |
| <title>d3-voronoi-treemap</title> | |
| <script src="https://d3js.org/d3.v4.min.js" charset="utf-8"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/seedrandom/2.4.3/seedrandom.min.js"></script> | |
| <script src="https://raw.githack.com/Kcnarf/d3-weighted-voronoi/master/build/d3-weighted-voronoi.js"></script> | |
| <script src="https://rawcdn.githack.com/Kcnarf/d3-voronoi-map/v1.2.0/build/d3-voronoi-map.js"></script> | |
| <script src="https://rawcdn.githack.com/Kcnarf/d3-voronoi-treemap/v1.1.0/build/d3-voronoi-treemap.js"></script> | |
| <script src="https://unpkg.com/flubber@0.3.0"></script> | |
| <style> | |
| path { | |
| stroke: white; | |
| stroke-width: 1px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg></svg> | |
| <script> | |
| var width = 960, | |
| height = 500, | |
| radius = 200; | |
| var svg = d3 | |
| .select("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g") | |
| .attr("transform", "translate(" + [width / 2 - radius, height / 2 - radius] + ")"); | |
| d3.json("globalEconomyByGDP.json", function(error, rootData) { | |
| if (error) throw error; | |
| var hierarchy = d3.hierarchy(rootData).sum(function(d) { | |
| return d.weight; | |
| }); | |
| var rectangles = getRectangles(hierarchy), | |
| voronoi = getVoronoiPolygons(hierarchy); | |
| var paired = d3 | |
| .nest() | |
| .key(function(d) { | |
| return d.name; | |
| }) | |
| .key(function(d) { | |
| return d.polygon ? "voronoi" : "rectangle"; | |
| }) | |
| .rollup(values => values[0]) | |
| .object(voronoi.concat(rectangles)); | |
| var animationPairs = d3.values(paired).map(function(value) { | |
| return { | |
| color: value.voronoi.color, | |
| voronoi: value.voronoi, | |
| rectangle: value.rectangle, | |
| interpolator: flubber.fromRect( | |
| value.rectangle.x, | |
| value.rectangle.y, | |
| value.rectangle.width, | |
| value.rectangle.height, | |
| value.voronoi.polygon | |
| ) | |
| }; | |
| }); | |
| svg | |
| .selectAll("path") | |
| .data(animationPairs) | |
| .enter() | |
| .append("path") | |
| .style("fill", function(d) { | |
| return d.color; | |
| }) | |
| .call(animate, true); | |
| }); | |
| function animate(cells, direction) { | |
| cells | |
| .attr("d", function(d) { | |
| return d.interpolator(direction ? 0 : 1); | |
| }) | |
| .transition() | |
| .delay(500) | |
| .duration(1000) | |
| .attrTween("d", function(d) { | |
| return direction | |
| ? d.interpolator | |
| : function(t) { | |
| return d.interpolator(1 - t); | |
| }; | |
| }) | |
| .filter(function(d, i) { | |
| return !i; | |
| }) | |
| .on("end", function() { | |
| cells.call(animate, !direction); | |
| }); | |
| } | |
| function getVoronoiPolygons(hierarchy) { | |
| //for reproducibility purpose, use a seedable pseudo random number generator | |
| var myseededprng = new Math.seedrandom('my seed'); // (from seedrandom's doc) Use "new" to create a local pprng without altering Math.random | |
| d3.voronoiTreemap().prng(myseededprng).clip( | |
| d3.range(0, 2 * Math.PI, Math.PI / 30).map(function(a) { | |
| return [ | |
| radius + radius * Math.cos(a), | |
| radius + radius * Math.sin(a) | |
| ]; | |
| }) | |
| )(hierarchy); | |
| return hierarchy.leaves().map(function(d) { | |
| return { | |
| name: d.data.name, | |
| polygon: d.polygon, | |
| color: d.parent.data.color | |
| }; | |
| }); | |
| } | |
| function getRectangles(hierarchy) { | |
| return d3.treemap().size([radius * 2, radius * 2])(hierarchy) | |
| .leaves() | |
| .map(function(d) { | |
| return { | |
| name: d.data.name, | |
| x: d.x0, | |
| y: d.y0, | |
| width: d.x1 - d.x0, | |
| height: d.y1 - d.y0 | |
| }; | |
| }); | |
| } | |
| </script> | |
| </body> | |
| </html> |