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1 | <!DOCTYPE html> |
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2 | <html> |
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3 | <head> |
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4 | <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> |
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5 | <title>Moiré Patterns</title> |
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6 | <script type="text/javascript" src="../../d3.js"></script> |
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7 | <style type="text/css"> |
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8 | |
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9 | circle { |
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10 | fill: none; |
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11 | stroke: #000; |
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12 | } |
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13 | |
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14 | </style> |
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15 | </head> |
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16 | <body> |
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17 | <script type="text/javascript"> |
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18 | |
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19 | var w = 960, |
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20 | h = 500; |
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21 | |
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22 | var svg = d3.select("body") |
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23 | .append("svg:svg") |
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24 | .attr("width", w) |
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25 | .attr("height", h) |
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26 | .attr("pointer-events", "all"); |
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27 | |
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28 | svg.append("svg:g") |
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29 | .selectAll("circle") |
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30 | .data(d3.range(110)) |
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31 | .enter().append("svg:circle") |
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32 | .attr("transform", "translate(" + w / 2 + "," + h / 2 + ")") |
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33 | .attr("r", function(d) { return d * 5; }); |
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34 | |
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35 | var circle = svg.append("svg:g") |
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36 | .selectAll("circle") |
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37 | .data(d3.range(60)) |
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38 | .enter().append("svg:circle") |
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39 | .attr("transform", "translate(" + w / 2 + "," + h / 2 + ")") |
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40 | .attr("r", function(d) { return d * 3; }); |
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41 | |
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42 | svg.on("mousemove", function() { |
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43 | var mouse = d3.svg.mouse(this), |
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44 | r = (Math.sqrt(mouse[0]) + 10) / 10; |
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45 | |
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46 | circle |
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47 | .attr("transform", "translate(" + mouse + ")") |
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48 | .attr("r", function(d) { return d * r; }); |
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49 | }); |
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50 | |
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51 | </script> |
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52 | </body> |
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53 | </html> |
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