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Old star map
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| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <link href="stars.css" rel="stylesheet"> | |
| </head> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="stars.js"></script> | |
| <script>d3.select(self.frameElement).style("height", "840px")</script> | |
| </body> | |
| </html> |
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| body { | |
| margin: 0; | |
| background: #fffab7; | |
| } | |
| text { | |
| font: 12px sans-serif; | |
| fill: #000; | |
| font-size: 0.75em; | |
| text-anchor: middle; | |
| } | |
| .bg { | |
| background: #fffab7; | |
| fill: #fffab7; | |
| } | |
| line { | |
| stroke: #000; | |
| stroke-width: 0.4; | |
| } | |
| line.zodiac { | |
| stroke: #f18700; | |
| stroke-width: 0.8; | |
| } | |
| .map-line { | |
| stroke-width: 0.8; | |
| } | |
| .zodiac-bg { | |
| stroke: #fffab7; | |
| stroke-width: 2.5; | |
| } | |
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| var width = 960, | |
| height = 840 | |
| var projection = d3.geo.azimuthalEquidistant() | |
| .scale(width / 5.5) | |
| .translate([0, 0]) | |
| .rotate([0, 270]) | |
| var starsContainer = d3.select('body').append('svg') | |
| .attr('width', width) | |
| .attr('height', height) | |
| .append('g') | |
| .attr('transform', 'translate(' + width / 2 + ',' + height / 2 + ')') | |
| d3.json("/erohinaelena/raw/ec635d68e8bf55586d40/starData.json", function(error, data) { | |
| var groups = starsContainer.selectAll('g') | |
| .data(data) | |
| .enter() | |
| .append('g') | |
| function addZodiacName(g, name, x, y) { | |
| var rotation = 'rotate(' + | |
| (Math.atan2(y, x) * 180 / Math.PI + 90) + ',' + | |
| x + ',' + | |
| y + ')'; | |
| g.append('text') | |
| .classed('zodiac-bg', true) | |
| g.append('text') | |
| g.selectAll('text') | |
| .text(name) | |
| .attr('x', x) | |
| .attr('y', y) | |
| .attr('transform', rotation) | |
| } | |
| function distance(x, y) { | |
| return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)) | |
| } | |
| groups.each(function (constellation) { | |
| var name = constellation.name | |
| var projections = constellation.stars.map(function (star) { | |
| var p = projection([star.ra, star.dec]) | |
| var out = (distance(p[0], p[1]) > width / 2.3) | |
| return { | |
| mag: star.mag, | |
| projection: p, | |
| out: out | |
| } | |
| }) | |
| var x = d3.mean(projections, function (d) { return d.projection[0] = -d.projection[0] }) | |
| var y = d3.mean(projections, function (d) { return d.projection[1] }) | |
| var g = d3.select(this) | |
| projections = projections.filter(function (star) { | |
| return !star.out && star.mag <= 6 | |
| }) | |
| if (distance(x,y) < width / 2.5 || constellation.zodiac){ | |
| var lines = constellation.lines.map(function (line) { | |
| var p1 = projection([line.ra1, line.dec1]) | |
| var p2 = projection([line.ra2, line.dec2]) | |
| p1[0] = -p1[0] | |
| p2[0] = -p2[0] | |
| var out = distance(p1[0], p1[1]) > width / 2.4 | |
| return {line: [p1, p2], zodiac: constellation.zodiac, out: out} | |
| }) | |
| var starLines = g.selectAll('line') | |
| .data(lines) | |
| .enter() | |
| .append('line') | |
| starLines | |
| .attr('x1', function (d) { return d.line[0][0] }) | |
| .attr('y1', function (d) { return d.line[0][1] }) | |
| .attr('x2', function (d) { return d.line[1][0] }) | |
| .attr('y2', function (d) { return d.line[1][1] }) | |
| .style('stroke',function (d) { if (d.out && !d.zodiac) return 'none'}) | |
| .classed('zodiac', function (d) { return d.zodiac; }) | |
| } | |
| var circles = g.selectAll('circle') | |
| .data(projections) | |
| .enter() | |
| circles.append('circle') | |
| .classed('bg', true) | |
| .attr('cx', function (d) { return d.projection[0] }) | |
| .attr('cy', function (d) { return d.projection[1] }) | |
| .attr('r', function (d) { return 1.2 + Math.pow(1.2, 5 - d.mag) }) | |
| circles.append('circle') | |
| .attr('cx', function (d) { return d.projection[0] }) | |
| .attr('cy', function (d) { return d.projection[1] }) | |
| .attr('r', function (d) { return Math.pow(1.2, 5 - d.mag) }) | |
| .attr('fill', 'black') | |
| if (constellation.zodiac) | |
| addZodiacName(g, name, x, y) | |
| }) | |
| }) | |
| for (var i = 0; i < 24; i++){ | |
| var outerRadius = 415 | |
| var innerRadius = 50 | |
| starsContainer.append('line') | |
| .classed('map-line', true) | |
| .attr('x1', outerRadius * Math.cos(i * Math.PI / 12)) | |
| .attr('y1', outerRadius * Math.sin(i * Math.PI / 12)) | |
| .attr('x2', innerRadius * Math.cos(i * Math.PI / 12)) | |
| .attr('y2', innerRadius * Math.sin(i * Math.PI / 12)) | |
| } | |
| for (i = 0; i < 6; i++){ | |
| starsContainer.append('circle') | |
| .attr('cx', 0) | |
| .attr('cy', 0) | |
| .attr('r', innerRadius + i * (outerRadius - innerRadius) / 5) | |
| .attr('fill','none') | |
| .attr('stroke','black') | |
| .attr('stroke-width',0.8) | |
| } | |
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