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May 14, 2016 20:27
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| svg { width:100%; height: 100% } | |
| path { stroke: black; fill: none; } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| // Feel free to change or delete any of the code you see! | |
| var svg = d3.select("body").append("svg") | |
| var points = [ | |
| { | |
| 'anchor': [0,0], | |
| 'control': [200,200] | |
| }, | |
| { | |
| 'anchor': [-63,300], | |
| 'control': [200,140] | |
| } | |
| ] | |
| function translate(arr) { | |
| return "translate(" + arr[0] + "," + arr[1] + ")"; | |
| } | |
| function svgPath(points) { | |
| var path = 'M'; | |
| points.forEach(function(d, i) { | |
| if (i == 0) { | |
| path += d.anchor[0] + ',' + d.anchor[1]; | |
| path += ' C ' + d.control[0] + ',' + d.control[1]; | |
| } else { | |
| path += d.anchor[0] + ',' + d.anchor[1]; | |
| path += ' ' + d.control[0] + ',' + d.control[1]; | |
| } | |
| }) | |
| return path; | |
| } | |
| console.log(svgPath(points)); | |
| var drag = d3.behavior.drag() | |
| .on('drag', function(d, i) { | |
| d3.select(this).attr('transform', translate([d3.event.x, d3.event.y])); | |
| }) | |
| var path = svg.append('path') | |
| .attr('d', svgPath(points)) | |
| var points = svg.selectAll('g.point') | |
| .data(points) | |
| .enter().append('g') | |
| .attr('class', 'point'); | |
| var anchors = points.append('circle') | |
| .attr('r', 5) | |
| .attr('transform', function(d) { | |
| return translate(d.anchor) | |
| }); | |
| var controls = points.append('circle') | |
| .attr('r', 5) | |
| .attr('transform', function(d) { | |
| return translate(d.control) | |
| }).on('drag', function(d) { | |
| }); | |
| console.log("you are now rocking with d3", d3); | |
| </script> | |
| </body> |
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