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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.country { | |
fill: green; | |
stroke: darkgrey; | |
stroke-width: .5px; | |
stroke-linejoin: round; | |
} | |
.background { | |
fill: lightblue; | |
} | |
.graticule { | |
fill: none; | |
stroke: #000; | |
stroke-opacity: .3; | |
stroke-width: .5px; | |
} | |
.graticule-outline { | |
fill: none; | |
stroke: #333; | |
stroke-width: 1.5px; | |
} | |
.cityPoint { | |
fill: yellow; | |
stroke: black; | |
opacity:.6; | |
} | |
.labels { | |
font: 12px sans-serif; | |
fill: black; | |
} | |
</style> | |
<body> | |
<script src="http://d3js.org/d3.v3.js"></script> | |
<script src="http://d3js.org/topojson.v0.min.js"></script> | |
<script> | |
var width = 960, | |
height = 500; | |
var rotate = [.001, 0], | |
velocity = [.013, 0], | |
time = Date.now(); | |
var centroid = d3.geo.path() | |
.projection(function(d) { return d; }) | |
.centroid; | |
var projection = d3.geo.orthographic() | |
.scale(125) | |
.clipAngle(90); | |
var path = d3.geo.path() | |
.projection(projection); | |
var graticule = d3.geo.graticule() | |
.extent([[-180, -90], [180 - .1, 90 - .1]]); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
var ocean = svg.append("path") | |
.datum({type: "Sphere"}) | |
.attr("class", "background") | |
.attr("d", path); | |
var graticuleLine = svg.append("path") | |
.attr("class", "graticule") | |
.attr("d", path); | |
svg.append("circle") | |
.attr("class", "graticule-outline") | |
.attr("cx", width / 2) | |
.attr("cy", height / 2) | |
.attr("r", projection.scale()) | |
d3.json("readme-world-110m.json", function(error, world) { | |
var countries = topojson.object(world, world.objects.countries).geometries, | |
i = -1, | |
n = countries.length; | |
var country = svg.selectAll(".country") | |
.data(countries) | |
.enter() | |
.insert("path", ".graticule") | |
.attr("class", "country") | |
.attr("d", path) | |
var cities = createCities(); | |
var cityPoints = svg.append("g").attr("class", "points") | |
.selectAll("path").data(cities) | |
.enter().append("path") | |
.attr("class", "cityPoint") | |
.attr("d", path); | |
svg.append("g") | |
.attr("class", "label_background") | |
.selectAll("rect").data(cities) | |
.enter().append("rect") | |
.attr("class", "label") | |
.attr({x: 0, y: -11, height: 12}) | |
.attr("width", function(d,i) { return i === 0 ? 40 : 69;}) | |
.style("fill", "yellow") | |
.style("opacity", 0.5); | |
svg.append("g").attr("class","labels") | |
.selectAll("text").data(cities) | |
.enter().append("text") | |
.attr("class", "label") | |
.attr("text-anchor", "start") | |
.text(function(d) { return d.properties.name }) | |
position_labels(); | |
debugger; | |
rotateGlobe(); | |
// shrinkGlobe(); | |
function createCities() { | |
var cities = [ | |
{ "type": "Feature", "properties": { "name": "Munich" }, | |
"geometry": { "type": "Point", "coordinates": [ 11.581981, 48.135125 ] } }, | |
{ "type": "Feature", "properties": { "name": "San Antonio" }, | |
"geometry": { "type": "Point", "coordinates": [ -98.5, 29.4167 ] } }, | |
{ "type": "Feature", "properties": { "name": "Melbourne" }, | |
"geometry": { "type": "Point", "coordinates": [ 144.963056, -37.813611, ] } } | |
]; | |
return cities; | |
} | |
function position_labels() { | |
var centerPos = projection.invert([width/2,height/2]); | |
var arc = d3.geo.greatArc(); | |
svg.selectAll(".label") | |
.attr("transform", function(d) { | |
var loc = projection(d.geometry.coordinates), | |
x = loc[0], | |
y = loc[1]; | |
var offset = 5; | |
return "translate(" + (x+offset) + "," + (y-2) + ")" | |
}) | |
.style("display",function(d) { | |
var d = arc.distance({source: d.geometry.coordinates, target: centerPos}); | |
return (d > 1.57) ? 'none' : 'inline'; | |
}); | |
} | |
function rotateGlobe() { | |
d3.timer(function() { | |
var dt = Date.now() - time; | |
projection.rotate([rotate[0] + velocity[0] * dt, rotate[1] + velocity[1] * dt]); | |
redraw(); | |
}); | |
} | |
function shrinkGlobe() { | |
redrawTransition(2500); | |
// projection.scale(200); | |
// redrawTransition(2500); | |
} | |
function redraw() { | |
country.attr("d", path); | |
graticuleLine.attr("d", path); | |
cityPoints.attr("d", path); | |
position_labels(); | |
} | |
function redrawTransition(mSeconds) { | |
projection.scale(50); | |
ocean.transition().duration(mSeconds).attr("d", path); | |
country.transition().duration(mSeconds).attr("d", path); | |
graticuleLine.transition().duration(mSeconds).attr("d", path); | |
cityPoints.attr("d", path); | |
position_labels(); | |
} | |
}); | |
</script> |
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