HelloWorld/R3可视化库测试.html at master · SmoothLatte/HelloWorld · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
<!DOCTYPE html>
<meta charset="utf-8">
<body>
<style>

path {
  fill: none;
  stroke: #000;
  stroke-width: 3px;
}

</style>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>

var points = [
  [480, 200],
  [580, 400],
  [680, 100],
  [780, 300],
  [180, 300],
  [280, 100],
  [380, 400]
];

var line = d3.svg.line()
    .tension(0) // Catmull–Rom
    .interpolate("cardinal-closed");

var svg = d3.select("body").append("svg")
    .datum(points)
    .attr("width", 960)
    .attr("height", 500);

svg.append("path")
    .style("stroke", "#ddd")
    .attr("d", line);

svg.append("path")
    .attr("d", line)
    .call(transition);

function transition(path) {
  path.transition()
      .duration(7500)
      .attrTween("stroke-dasharray", tweenDash)
      .each("end", function() { d3.select(this).call(transition); });
}

function tweenDash() {
  var l = this.getTotalLength(),
      i = d3.interpolateString("0," + l, l + "," + l);
  return function(t) { return i(t); };
}

</script>