Faux-3d SVG globe using d3.geo.orthographic and a few radial gradients. Labels offset or hidden based on radians from current map center to enhance the effect.
Uncomment svg.append("g").attr("class","countries") for hover-able country outlines.
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April 19, 2020 22:30
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Faux-3d Shaded Globe
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .land { | |
| fill: rgb(117, 87, 57); | |
| stroke-opacity: 1; | |
| } | |
| .countries path { | |
| stroke: rgb(80, 64, 39); | |
| stroke-linejoin: round; | |
| stroke-width:.5; | |
| fill: rgb(117, 87, 57); | |
| opacity: .1; | |
| } | |
| .countries path:hover { | |
| fill-opacity:.1; | |
| stroke-width:1; | |
| opacity: 1; | |
| } | |
| .graticule { | |
| fill: none; | |
| stroke: black; | |
| stroke-width:.5; | |
| opacity:.2; | |
| } | |
| .labels { | |
| font: 8px sans-serif; | |
| fill: black; | |
| opacity: .5; | |
| } | |
| .noclicks { | |
| pointer-events:none; | |
| } | |
| .point{ | |
| opacity:.6; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/queue.v1.min.js"></script> | |
| <script src="http://d3js.org/topojson.v0.min.js"></script> | |
| <script> | |
| // Lots of code from: | |
| // http://bl.ocks.org/3757125 | |
| // http://bl.ocks.org/3795040 | |
| d3.select(window) | |
| .on("mousemove", mousemove) | |
| .on("mouseup", mouseup); | |
| var width = 960, | |
| height = 500; | |
| var proj = d3.geo.orthographic() | |
| .scale(220) | |
| .translate([width / 2, height / 2]) | |
| .clipAngle(90); | |
| var path = d3.geo.path().projection(proj).pointRadius(1.5); | |
| var graticule = d3.geo.graticule(); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .on("mousedown", mousedown); | |
| queue() | |
| .defer(d3.json, "world-110m.json") | |
| .defer(d3.json, "places.json") | |
| .await(ready); | |
| function ready(error, world, places) { | |
| var ocean_fill = svg.append("defs").append("radialGradient") | |
| .attr("id", "ocean_fill") | |
| .attr("cx", "75%") | |
| .attr("cy", "25%"); | |
| ocean_fill.append("stop").attr("offset", "5%").attr("stop-color", "#ddf"); | |
| ocean_fill.append("stop").attr("offset", "100%").attr("stop-color", "#9ab"); | |
| var globe_highlight = svg.append("defs").append("radialGradient") | |
| .attr("id", "globe_highlight") | |
| .attr("cx", "75%") | |
| .attr("cy", "25%"); | |
| globe_highlight.append("stop") | |
| .attr("offset", "5%").attr("stop-color", "#ffd") | |
| .attr("stop-opacity","0.6"); | |
| globe_highlight.append("stop") | |
| .attr("offset", "100%").attr("stop-color", "#ba9") | |
| .attr("stop-opacity","0.2"); | |
| var globe_shading = svg.append("defs").append("radialGradient") | |
| .attr("id", "globe_shading") | |
| .attr("cx", "50%") | |
| .attr("cy", "40%"); | |
| globe_shading.append("stop") | |
| .attr("offset","50%").attr("stop-color", "#9ab") | |
| .attr("stop-opacity","0") | |
| globe_shading.append("stop") | |
| .attr("offset","100%").attr("stop-color", "#3e6184") | |
| .attr("stop-opacity","0.3") | |
| var drop_shadow = svg.append("defs").append("radialGradient") | |
| .attr("id", "drop_shadow") | |
| .attr("cx", "50%") | |
| .attr("cy", "50%"); | |
| drop_shadow.append("stop") | |
| .attr("offset","20%").attr("stop-color", "#000") | |
| .attr("stop-opacity",".5") | |
| drop_shadow.append("stop") | |
| .attr("offset","100%").attr("stop-color", "#000") | |
| .attr("stop-opacity","0") | |
| svg.append("ellipse") | |
| .attr("cx", 440).attr("cy", 450) | |
| .attr("rx", proj.scale()*.90) | |
| .attr("ry", proj.scale()*.25) | |
| .attr("class", "noclicks") | |
| .style("fill", "url(#drop_shadow)"); | |
| svg.append("circle") | |
| .attr("cx", width / 2).attr("cy", height / 2) | |
| .attr("r", proj.scale()) | |
| .attr("class", "noclicks") | |
| .style("fill", "url(#ocean_fill)"); | |
| svg.append("path") | |
| .datum(topojson.object(world, world.objects.land)) | |
| .attr("class", "land") | |
| .attr("d", path); | |
| svg.append("path") | |
| .datum(graticule) | |
| .attr("class", "graticule noclicks") | |
| .attr("d", path); | |
| svg.append("circle") | |
| .attr("cx", width / 2).attr("cy", height / 2) | |
| .attr("r", proj.scale()) | |
| .attr("class","noclicks") | |
| .style("fill", "url(#globe_highlight)"); | |
| svg.append("circle") | |
| .attr("cx", width / 2).attr("cy", height / 2) | |
| .attr("r", proj.scale()) | |
| .attr("class","noclicks") | |
| .style("fill", "url(#globe_shading)"); | |
| svg.append("g").attr("class","points") | |
| .selectAll("text").data(places.features) | |
| .enter().append("path") | |
| .attr("class", "point") | |
| .attr("d", path); | |
| svg.append("g").attr("class","labels") | |
| .selectAll("text").data(places.features) | |
| .enter().append("text") | |
| .attr("class", "label") | |
| .text(function(d) { return d.properties.name }) | |
| // uncomment for hover-able country outlines | |
| // svg.append("g").attr("class","countries") | |
| // .selectAll("path") | |
| // .data(topojson.object(world, world.objects.countries).geometries) | |
| // .enter().append("path") | |
| // .attr("d", path); | |
| position_labels(); | |
| } | |
| function position_labels() { | |
| var centerPos = proj.invert([width/2,height/2]); | |
| var arc = d3.geo.greatArc(); | |
| svg.selectAll(".label") | |
| .attr("text-anchor",function(d) { | |
| var x = proj(d.geometry.coordinates)[0]; | |
| return x < width/2-20 ? "end" : | |
| x < width/2+20 ? "middle" : | |
| "start" | |
| }) | |
| .attr("transform", function(d) { | |
| var loc = proj(d.geometry.coordinates), | |
| x = loc[0], | |
| y = loc[1]; | |
| var offset = x < width/2 ? -5 : 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'; | |
| }) | |
| } | |
| // modified from http://bl.ocks.org/1392560 | |
| var m0, o0; | |
| function mousedown() { | |
| m0 = [d3.event.pageX, d3.event.pageY]; | |
| o0 = proj.rotate(); | |
| d3.event.preventDefault(); | |
| } | |
| function mousemove() { | |
| if (m0) { | |
| var m1 = [d3.event.pageX, d3.event.pageY] | |
| , o1 = [o0[0] + (m1[0] - m0[0]) / 6, o0[1] + (m0[1] - m1[1]) / 6]; | |
| o1[1] = o1[1] > 30 ? 30 : | |
| o1[1] < -30 ? -30 : | |
| o1[1]; | |
| proj.rotate(o1); | |
| refresh(); | |
| } | |
| } | |
| function mouseup() { | |
| if (m0) { | |
| mousemove(); | |
| m0 = null; | |
| } | |
| } | |
| function refresh() { | |
| svg.selectAll(".land").attr("d", path); | |
| svg.selectAll(".countries path").attr("d", path); | |
| svg.selectAll(".graticule").attr("d", path); | |
| svg.selectAll(".point").attr("d", path); | |
| position_labels(); | |
| } | |
| </script> |
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