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Hexagon whirl
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| <!DOCTYPE HTML> | |
| <html lang="en"> | |
| <head> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script src="whirl.js"></script> | |
| <style> | |
| path { | |
| fill: none; | |
| stroke: maroon; | |
| } | |
| svg { | |
| display: block; | |
| margin: 0 auto; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| hexwhirl(300); | |
| </script> | |
| </body> | |
| </html> |
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| function lineFunctionFunction(factor) { | |
| return d3.svg.line() | |
| .x(function(d) { return factor * d.x; }) | |
| .y(function(d) { return factor * d.y; }) | |
| .interpolate("linear"); | |
| } | |
| var trianglePoints = [{"x":-1, "y":-0.866025404}, {"x":0, "y":0.866025404}, | |
| {"x":1, "y":-0.866025404}, {"x":-1, "y":-0.866025404}]; | |
| factor = 100; | |
| function nested(num, total) { | |
| if (num > 0) | |
| var myNest = nested(num - 1, total); | |
| var lineFunction = lineFunctionFunction(factor); | |
| function my(selection) { | |
| selection.each(function(data) { | |
| var s = d3.select(this); | |
| // make the stroke fatter to keep weight consistent as triangle is scaled smaller | |
| var path = s.append("path") | |
| .style("stroke", "maroon") | |
| .attr("d", lineFunction(trianglePoints)); | |
| path.transition() | |
| .delay(300) | |
| .duration(5000) | |
| .style("stroke-width", 1 / Math.pow(0.87, total - num)); | |
| if (num > 0) { | |
| var newTriangle = s.append("g") | |
| .call(myNest); | |
| newTriangle.transition() | |
| .delay(300) | |
| .duration(5000) | |
| .attr("transform", "scale(.87)rotate(5)translate(-2.7,-4.2)"); | |
| } | |
| }); | |
| } | |
| return my; | |
| } | |
| function hexwhirl(width) { | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", width) | |
| .append("g") | |
| .attr("transform", "scale(" + (width / 400) + "," + (width / 400) + ")"); | |
| var nest = nested(25, 20); | |
| var hex = ["translate(100,100)scale(1,-1)", "translate(200,100)", "translate(300,100)scale(1,-1)", "translate(200,273)scale(1,-1)", "translate(100,273)", "translate(300,273)"]; | |
| var triangles = svg.selectAll("g.triangle") | |
| .data(hex) | |
| .enter().append("g"); | |
| triangles | |
| .attr("transform", function(d){ return d; }) | |
| .call(nest); | |
| } |
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