This is a rendering of the world using d3.geo.orthographic. The countries are clickable, and the projection rotates to center on each country that is clicked. This is based off of examples by Mike Bostock, including the World Tour.
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D3 orthographic map with center on click
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license: gpl-3.0 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
background: #fcfcfa; | |
} | |
.stroke { | |
fill: none; | |
stroke: #000; | |
stroke-width: 1px; | |
} | |
.fill { | |
fill: #f2f2f2; | |
} | |
.graticule { | |
fill: none; | |
stroke: #777; | |
stroke-width: .5px; | |
stroke-opacity: .5; | |
} | |
.land { | |
fill: darkgrey; | |
} | |
.boundary { | |
fill: none; | |
stroke: #fff; | |
stroke-width: .5px; | |
} | |
</style> | |
<body> | |
<script src="//d3js.org/d3.v3.min.js"></script> | |
<script src="//d3js.org/topojson.v1.min.js"></script> | |
<script src="//d3js.org/queue.v1.min.js"></script> | |
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script> | |
<script> | |
var width = 950, | |
height = 700; | |
var colors = { clickable: 'darkgrey', hover: 'grey', clicked: "red", clickhover: "darkred" }; | |
var projection = d3.geo.orthographic() | |
.scale(300) | |
.translate([width / 2, height / 2]) | |
.clipAngle(90) | |
.precision(10); | |
var path = d3.geo.path() | |
.projection(projection); | |
var graticule = d3.geo.graticule(); | |
var map = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height) | |
.attr("class", "map"); | |
map.append("defs").append("path") | |
.datum({type: "Sphere"}) | |
.attr("id", "sphere") | |
.attr("d", path); | |
map.append("use") | |
.attr("class", "stroke") | |
.attr("xlink:href", "#sphere"); | |
map.append("use") | |
.attr("class", "fill") | |
.attr("xlink:href", "#sphere"); | |
map.append("path") | |
.datum(graticule) | |
.attr("class", "graticule") | |
.attr("d", path); | |
queue() | |
.defer(d3.json, "/mbostock/raw/4090846/world-110m.json") | |
.defer(d3.tsv, "/mbostock/raw/4090846/world-country-names.tsv") | |
.await(ready); | |
function ready(error, world, names) { | |
if (error) throw error; | |
var globe = {type: "Sphere"}, | |
land = topojson.feature(world, world.objects.land), | |
countries = topojson.feature(world, world.objects.countries).features, | |
borders = topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }); | |
countries = countries.filter(function(d) { | |
return names.some(function(n) { | |
if (d.id == n.id) return d.name = n.name; | |
}); | |
}).sort(function(a, b) { | |
return a.name.localeCompare(b.name); | |
}); | |
map.insert("path", ".graticule") | |
.datum(topojson.feature(world, world.objects.land)) | |
.attr("class", "land") | |
.attr("d", path); | |
for(i = 0; i < names.length; i++) { | |
for (j = 0; j < countries.length; j++) { | |
if (countries[j].id == names[i].id) { | |
map.insert("path", ".graticule") | |
.datum(countries[j]) | |
.attr("fill", colors.clickable) | |
.attr("d", path) | |
.attr("class", "clickable") | |
.attr("data-country-id", j) | |
.on("click", function() { | |
d3.selectAll(".clicked") | |
.classed("clicked", false) | |
.attr("fill", colors.clickable); | |
d3.select(this) | |
.classed("clicked", true) | |
.attr("fill", colors.clicked); | |
(function transition() { | |
d3.select(".clicked").transition() | |
.duration(1250) | |
.tween("rotate", function() { | |
var p = d3.geo.centroid(countries[d3.select(this).attr("data-country-id")]), | |
r = d3.interpolate(projection.rotate(), [-p[0], -p[1]]); | |
return function (t) { | |
projection.rotate(r(t)); | |
map.selectAll("path").attr("d", path); | |
} | |
}); | |
})(); | |
}) | |
.on("mousemove", function() { | |
var c = d3.select(this); | |
if (c.classed("clicked")) { | |
c.attr("fill", colors.clickhover); | |
} else { | |
c.attr("fill", colors.hover); | |
} | |
}) | |
.on("mouseout", function() { | |
var c = d3.select(this); | |
if (c.classed("clicked")) { | |
c.attr("fill", colors.clicked); | |
} else { | |
d3.select(this).attr("fill", colors.clickable); | |
} | |
}); | |
} | |
} | |
} | |
map.insert("path", ".graticule") | |
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; })) | |
.attr("class", "boundary") | |
.attr("d", path); | |
}; | |
d3.select(self.frameElement).style("height", height + "px"); | |
</script> |
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