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Drawing a spider web with d3
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| <html> | |
| <head> | |
| <title>Webmaking</title> | |
| <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script> | |
| <script type="text/javascript" src="http://d3js.org/d3.v2.min.js"></script> | |
| <script type="text/javascript"> | |
| $(document).ready(function() { | |
| function getPoints(radius, segments, levels) { | |
| points = { | |
| all: [], | |
| byLevel: [], | |
| bySegment: [], | |
| }; | |
| for (i = 0; i < levels; i++) { | |
| r = (radius/levels) * (i + 1); | |
| points.byLevel[i] = [] | |
| for (j = 0; j < segments; j++) { | |
| if (points.bySegment[j] == undefined) { | |
| points.bySegment[j] = []; | |
| } | |
| theta = ((2 * Math.PI) / segments) * j; | |
| point = { | |
| r: r, | |
| theta: theta, | |
| x: r * Math.cos(theta), | |
| y: r * Math.sin(theta), | |
| level: i | |
| }; | |
| points.all.push(point); | |
| points.byLevel[i].push(point); | |
| points.bySegment[j].push(point); | |
| } | |
| } | |
| return points; | |
| } | |
| var svg = d3.select('#web').append('svg').style('width', '100%').style('height', '100%'), | |
| vis = svg.append('g'), | |
| width = 500, | |
| segments = 8, | |
| levels = 4, | |
| points = getPoints(width / 2, segments, levels); | |
| vis.attr("transform", "translate(" + $(window).width() / 2 + ", " + $(window).height() / 2 + ")"); | |
| vis.selectAll("circle") | |
| .data(points.all) | |
| .enter().append("circle") | |
| .attr("cx", function(d) { | |
| return d.x; | |
| }) | |
| .attr("cy", function(d) { | |
| return d.y; | |
| }) | |
| .attr("r", 5) | |
| .attr("class", function(d) { | |
| return "level-" + d.level; | |
| }); | |
| for (level = 0; level < levels; level++) { | |
| for (j = 0; j < segments; j++) { | |
| var point = points.byLevel[level][j] | |
| var nextIdx = j + 1 < segments ? j + 1 : 0; | |
| var nextPoint = points.byLevel[level][nextIdx]; | |
| vis.append("path") | |
| .attr("d", "M " + point.x + " " + point.y + " L " + nextPoint.x + " " + nextPoint.y) | |
| .style("stroke", "#000"); | |
| } | |
| } | |
| for (segment = 0; segment < segments; segment++) { | |
| console.debug(points.bySegment[segment]); | |
| var start = points.bySegment[segment][0]; | |
| var end = points.bySegment[segment][levels - 1]; | |
| vis.append("path") | |
| .attr("d", "M " + start.x + " " + start.y + " L " + end.x + " " + end.y) | |
| .style("stroke", "#000"); | |
| } | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <div id="web"></div> | |
| </body> | |
| </html> |
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Could you please fix the broken link to d3.js, using http://d3js.org/d3.v2.min.js ? Thanks!