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emergency-landing.html
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emergency-landing.html
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<!DOCTYPE html>
<html>
<head>
<script src="//d3js.org/d3.v5.min.js"></script>
<script src="//d3js.org/d3-geo-projection.v2.min.js"></script>
<script src="//d3js.org/topojson.v2.min.js"></script>
</head>
<body>
<svg id="svg1" width="1080" height="600"></svg>
<svg id="svg2" width="1080" height="600"></svg>
</body>
</html>
<style>
.stroke {
fill: none;
stroke: #000;
stroke-width: 0;
}
.fill {
fill: #1795d1;
}
.graticule {
fill: none;
stroke: #ddd;
stroke-width: 2px;
stroke-opacity: .5;
}
.land {
fill: #fff ;
}
.boundary {
fill: none;
stroke: #fff;
stroke-width: 0;
}
.route {
fill: none;
stroke: #000;
stroke-width: 5px;
}
.point {
fill: black;
stroke: #000;
stroke-width: 8px;
}
</style>
<script>
function getLineString(i) {
return {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "LineString",
"coordinates": i
}
}
]
};
}
function getMultiPoint(i) {
return {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"geometry": {
"type": "MultiPoint",
"coordinates": i
}
}
]
};
}
// var a = 'dubai',
// b = 'perth',
// c = 'sydney';
// var a = 'abu-dhabi',
// b = 'adelaide',
// c = 'sydney';
// var a = 'johannesburg',
// b = 'perth',
// c = 'sydney';
// var a = 'dallas',
// b = 'noumea',
// c = 'brisbane';
// var a = 'singapore',
// b = 'adelaide',
// c = 'sydney';
// var a = 'vancouver',
// b = 'honolulu',
// c = 'sydney';
// var a = 'auckland',
// b = 'darwin',
// c = 'hong-kong';
// var a = 'diego-garcia',
// b = 'banda-aceh',
// c = 'kadena';
// var a = 'bangkok',
// b = 'denpasar',
// c = 'melbourne';
// var a = 'sydney',
// b = 'alice-springs',
// c = 'kuala-lumpur';
// var a = 'perth',
// b = 'denpasar',
// c = 'hong-kong';
// var a = 'hong-kong',
// b = 'manila',
// c = 'melbourne';
// var a = 'doha',
// b = 'chennai',
// c = 'denpasar';
// var a = 'montevideo',
// b = 'fortaleza',
// c = 'madrid';
// var a = 'saopaulo',
// b = 'lagos',
// c = 'dubai';
// var a = 'sanfrancisco',
// b = 'moscow',
// c = 'dubai';
var a = 'shanghai',
b = 'moscow',
c = 'munich';
// svg1
var svg1 = d3.select("#svg1"),
width = +svg1.attr("width"),
height = +svg1.attr("height");
var projection1 = d3.geoOrthographic()
.rotate([0,0])
;
var path1 = d3.geoPath()
.projection(projection1);
svg1.append("defs").append("path")
.datum({type: "Sphere"})
.attr("id", "sphere")
.attr("d", path1);
svg1.append("use")
.attr("class", "stroke")
.attr("xlink:href", "#sphere");
svg1.append("use")
.attr("class", "fill")
.attr("xlink:href", "#sphere");
svg1.append("path")
.datum(function() {
return d3.geoGraticule()
.stepMinor([30,30])
.extentMinor([[-180,-90], [180,90]])
();
})
.attr("class", "graticule")
.attr("d", path1);
// svg2
var svg2 = d3.select("#svg2"),
width = +svg2.attr("width"),
height = +svg2.attr("height");
var projection2 = d3.geoAzimuthalEquidistant()
.rotate([0, -90])
;
var path2 = d3.geoPath()
.projection(projection2);
svg2.append("defs").append("path")
.datum({type: "Sphere"})
.attr("id", "sphere")
.attr("d", path2);
svg2.append("use")
.attr("class", "stroke")
.attr("xlink:href", "#sphere");
svg2.append("use")
.attr("class", "fill")
.attr("xlink:href", "#sphere");
svg2.append("path")
.datum(function() {
return d3.geoGraticule()
.stepMinor([30,30])
.extentMinor([[-180,-90], [180,90]])
();
})
.attr("class", "graticule")
.attr("d", path2);
function addRoute(a, b, c) {
svg1.insert("path", ".route")
.datum(getLineString([a, c]))
.attr("class", "route")
.attr("d", path1);
svg1.insert("path", ".point")
.datum(getMultiPoint([a, b, c]))
.attr("class", "point")
.attr("d", path1);
var flatline = getLineString([projection2(a), projection2(c)]);
var flatpath = d3.geoPath()(flatline);
console.log(flatpath);
svg2.insert("path", ".route")
.attr("class", "route noproj")
.attr("d", flatpath);
// svg2.insert("path", ".route")
// .datum(getLineString([a, c]))
// .attr("class", "route")
// .attr("d", path2);
svg2.insert("path", ".point")
.datum(getMultiPoint([a, b, c]))
.attr("class", "point")
.attr("d", path2);
}
d3.json("common/50m.json").then(function(world) {
svg1.insert("path", ".graticule")
.datum(topojson.feature(world, world.objects.land))
.attr("class", "land")
.attr("d", path1);
svg1.insert("path", ".graticule")
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
.attr("class", "boundary")
.attr("d", path1);
svg2.insert("path", ".graticule")
.datum(topojson.feature(world, world.objects.land))
.attr("class", "land")
.attr("d", path2);
svg2.insert("path", ".graticule")
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
.attr("class", "boundary")
.attr("d", path2);
});
d3.json("common/locations.json").then(function(l) {
addRoute(l[a], l[b], l[c]);
var mid = d3.geoCentroid(getLineString([l[a], l[c]]));
projection1.rotate([-mid[0], -mid[1]]);
d3.selectAll('#svg1 path').attr('d', path1);
});
</script>