在D3.js中，如何以连续循环方式旋转SVG

Question

我D3.js强制有向图输出 -相同的代码是

<!DOCTYPE html>
<meta charset="utf-8">
<style>

.links line {
  stroke: #999;
  stroke-opacity: 0.6;
}

.nodes circle {
  stroke: #fff;
  stroke-width: 1.5px;
}

</style>
<svg width="960" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

var svg = d3.select("svg"),
    width = +svg.attr("width"),
    height = +svg.attr("height");

var color = d3.scaleOrdinal(d3.schemeCategory20);

var simulation = d3.forceSimulation()
    .force("link", d3.forceLink().id(function(d) { return d.id; }))
    .force("charge", d3.forceManyBody())
    .force("center", d3.forceCenter(width / 2, height / 2));

d3.json("miserables.json", function(error, graph) {
  if (error) throw error;

  var link = svg.append("g")
      .attr("class", "links")
    .selectAll("line")
    .data(graph.links)
    .enter().append("line")
      .attr("stroke-width", function(d) { return Math.sqrt(d.value); });

  var node = svg.append("g")
      .attr("class", "nodes")
    .selectAll("circle")
    .data(graph.nodes)
    .enter().append("circle")
      .attr("r", 5)
      .attr("fill", function(d) { return color(d.group); })
      .call(d3.drag()
          .on("start", dragstarted)
          .on("drag", dragged)
          .on("end", dragended));

  node.append("title")
      .text(function(d) { return d.id; });

  simulation
      .nodes(graph.nodes)
      .on("tick", ticked);

  simulation.force("link")
      .links(graph.links);

  function ticked() {
    link
        .attr("x1", function(d) { return d.source.x; })
        .attr("y1", function(d) { return d.source.y; })
        .attr("x2", function(d) { return d.target.x; })
        .attr("y2", function(d) { return d.target.y; });

    node
        .attr("cx", function(d) { return d.x; })
        .attr("cy", function(d) { return d.y; });
  }
});

function dragstarted(d) {
  if (!d3.event.active) simulation.alphaTarget(0.3).restart();
  d.fx = d.x;
  d.fy = d.y;
}

function dragged(d) {
  d.fx = d3.event.x;
  d.fy = d3.event.y;
}

function dragended(d) {
  if (!d3.event.active) simulation.alphaTarget(0);
  d.fx = null;
  d.fy = null;
}

</script>

绘制图形后，我需要每个svg以循环方式旋转。 也就是说，整个图应围绕其中心以圆形方式旋转。 有人可以指导我如何开始制作该动画。 我以前没做过

Answer 1

您可以单独使用CSS来做到这一点：

@keyframes rotating {
  from {
    -ms-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }
  to {
    -ms-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -webkit-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}
.rotating {
  -webkit-animation: rotating 4s linear infinite;
  -moz-animation: rotating 4s linear infinite;
  -ms-animation: rotating 4s linear infinite;
  -o-animation: rotating 4s linear infinite;
  animation: rotating 4s linear infinite;
}

...

<svg width="960" height="600" class="rotating"></svg>

完整代码：

 <!DOCTYPE html> <meta charset="utf-8"> <style> .links line { stroke: #999; stroke-opacity: 0.6; } .nodes circle { stroke: #fff; stroke-width: 1.5px; } @keyframes rotating { from { -ms-transform: rotate(0deg); -moz-transform: rotate(0deg); -webkit-transform: rotate(0deg); -o-transform: rotate(0deg); transform: rotate(0deg); } to { -ms-transform: rotate(360deg); -moz-transform: rotate(360deg); -webkit-transform: rotate(360deg); -o-transform: rotate(360deg); transform: rotate(360deg); } } .rotating { -webkit-animation: rotating 4s linear infinite; -moz-animation: rotating 4s linear infinite; -ms-animation: rotating 4s linear infinite; -o-animation: rotating 4s linear infinite; animation: rotating 4s linear infinite; } </style> <svg width="500" height="500" class="rotating"></svg> <script src="https://d3js.org/d3.v4.min.js"></script> <script> var svg = d3.select("svg"), width = +svg.attr("width"), height = +svg.attr("height"); var color = d3.scaleOrdinal(d3.schemeCategory20); var simulation = d3.forceSimulation() .force("link", d3.forceLink().id(function(d) { return d.id; })) .force("charge", d3.forceManyBody()) .force("center", d3.forceCenter(width / 2, height / 2)); d3.json("https://jsonblob.com/api/70644ddd-0663-11e7-a0ba-bfa7d58cc507", function(error, graph) { if (error) throw error; var link = svg.append("g") .attr("class", "links") .selectAll("line") .data(graph.links) .enter().append("line") .attr("stroke-width", function(d) { return Math.sqrt(d.value); }); var node = svg.append("g") .attr("class", "nodes") .selectAll("circle") .data(graph.nodes) .enter().append("circle") .attr("r", 5) .attr("fill", function(d) { return color(d.group); }) .call(d3.drag() .on("start", dragstarted) .on("drag", dragged) .on("end", dragended)); node.append("title") .text(function(d) { return d.id; }); simulation .nodes(graph.nodes) .on("tick", ticked); simulation.force("link") .links(graph.links); function ticked() { link .attr("x1", function(d) { return d.source.x; }) .attr("y1", function(d) { return d.source.y; }) .attr("x2", function(d) { return d.target.x; }) .attr("y2", function(d) { return d.target.y; }); node .attr("cx", function(d) { return dx; }) .attr("cy", function(d) { return dy; }); } }); function dragstarted(d) { if (!d3.event.active) simulation.alphaTarget(0.3).restart(); d.fx = dx; d.fy = dy; } function dragged(d) { d.fx = d3.event.x; d.fy = d3.event.y; } function dragended(d) { if (!d3.event.active) simulation.alphaTarget(0); d.fx = null; d.fy = null; } </script>

在D3.js中，如何以连续循环方式旋转SVG

问题描述

1 个解决方案

解决方案1
1 已采纳 2017-03-11 14:05:43

在D3.js中，如何以连续循环方式旋转SVG

问题描述

1 个解决方案

解决方案1 1 已采纳 2017-03-11 14:05:43

解决方案1
1 已采纳 2017-03-11 14:05:43