This done with svg http://bl.ocks.org/mbostock/6242308 using this technique http://bl.ocks.org/mbostock/2374239
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December 21, 2015 14:59
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>FUN</title> | |
| <style> | |
| .graticule { | |
| fill: none; | |
| stroke: #777; | |
| stroke-opacity: .5; | |
| } | |
| .boundary { | |
| fill: none; | |
| stroke: #fff; | |
| } | |
| .overlay { | |
| fill: none; | |
| pointer-events: all; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <script> | |
| var margin = {top: 0, right: 0, bottom: 0, left: 0}; | |
| var width = 960; | |
| var height = 500; | |
| var sf = [-122.417, 37.775], | |
| ny = [-74.0064, 40.7142], | |
| hk = [114.1589, 22.2783]; | |
| var scale = (width + 1) / 2 / Math.PI; | |
| var projection = d3.geo.mercator() | |
| .translate([0, 0]) | |
| .scale(scale) | |
| .precision(0.1); | |
| var graticule = d3.geo.graticule(); | |
| var path = d3.geo.path(); | |
| var zoom = d3.behavior.zoom() | |
| .translate([0, 0]) | |
| .scale(1) | |
| .scaleExtent([1, 8]) | |
| .on("zoom", zoomed); | |
| var svg = d3.select('body').append('svg') | |
| .attr('width', width) | |
| .attr('height', height) | |
| .attr('class', 'world'); | |
| var features = svg.append('g').attr('class', features); | |
| projection.translate([width/2, height/2]).scale(scale); | |
| path.projection(projection); | |
| features.append("path") | |
| .datum(graticule) | |
| .attr("class", "graticule") | |
| .style('stroke-width', 0.5 + 'px') | |
| .attr("d", path); | |
| var countries = features.insert('g', '.graticule') | |
| .attr('class', 'countries'); | |
| var points = features.insert('g', '.graticule') | |
| .attr('class', 'points'); | |
| d3.json('world.json', function(err, data) { | |
| countries.selectAll('.country') | |
| .data(topojson.feature(topojson.presimplify(data), data.objects.countries).features) | |
| .enter().append('path') | |
| .attr('class', 'country') | |
| .attr('d', path) | |
| .append('title') | |
| .text(function(d) { return d.properties.name; }); | |
| features.insert("path", ".graticule") | |
| .datum(topojson.mesh(topojson.presimplify(data), data.objects.countries, function(a, b) { return a !== b; })) | |
| .attr("class", "boundary") | |
| .style('stroke-width', 1.0) | |
| .attr("d", path); | |
| svg.append("rect") | |
| .attr("class", "overlay") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .call(zoomTo(hk, 4).event) | |
| .transition() | |
| // .duration(60 * 1000 / 89 * 2) | |
| .duration(5000) | |
| .each(jump); | |
| }); | |
| function zoomed() { | |
| features.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")"); | |
| features.select('.graticule').style('stroke-width', 0.5 / d3.event.scale + "px"); | |
| features.select('.boundary').style('stroke-width', 1.0 / d3.event.scale + "px"); | |
| } | |
| function zoomTo(location, scale) { | |
| var point = projection(location); | |
| return zoom | |
| .translate([width / 2 - point[0] * scale, height / 2 - point[1] * scale]) | |
| .scale(scale); | |
| } | |
| function jump() { | |
| var t = d3.select(this); | |
| (function repeat() { | |
| t = t.transition() | |
| .call(zoomTo(ny, 4).event) | |
| .transition() | |
| .call(zoomTo(sf, 4).event) | |
| .each("end", repeat); | |
| })(); | |
| } | |
| </script> |
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