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Pan and Zoom
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
svg { | |
background: #eee; | |
} | |
.sphere { | |
fill: #fff; | |
} | |
.land { | |
fill: #000; | |
} | |
.boundary { | |
fill: none; | |
stroke: #fff; | |
stroke-linejoin: round; | |
stroke-linecap: round; | |
vector-effect: non-scaling-stroke; | |
} | |
.overlay { | |
fill: none; | |
pointer-events: all; | |
} | |
</style> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script src="http://d3js.org/topojson.v1.min.js"></script> | |
<body> | |
<script> | |
var width = 960, | |
height = 960; | |
var projection = d3.geo.mercator() | |
.translate([width / 2, height / 2]) | |
.scale((width - 1) / 2 / Math.PI); | |
var zoom = d3.behavior.zoom() | |
.scaleExtent([1, 8]) | |
.on("zoom", zoomed); | |
var path = d3.geo.path() | |
.projection(projection); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height) | |
.append("g"); | |
var g = svg.append("g"); | |
svg.append("rect") | |
.attr("class", "overlay") | |
.attr("width", width) | |
.attr("height", height); | |
svg | |
.call(zoom) | |
.call(zoom.event); | |
d3.json("/mbostock/raw/4090846/world-50m.json", function(error, world) { | |
g.append("path") | |
.datum({type: "Sphere"}) | |
.attr("class", "sphere") | |
.attr("d", path); | |
g.append("path") | |
.datum(topojson.merge(world, world.objects.countries.geometries)) | |
.attr("class", "land") | |
.attr("d", path); | |
g.append("path") | |
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; })) | |
.attr("class", "boundary") | |
.attr("d", path); | |
}); | |
function zoomed() { | |
g.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")"); | |
} | |
d3.select(self.frameElement).style("height", height + "px"); | |
</script> |
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