2019-08-20 17:17:56 +08:00
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>Document</title>
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</head>
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<body>
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<div id="mountNode"></div>
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</body>
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<script src="./assets/dagre.js"></script>
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<script src="../build/g6.js"></script>
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<script>
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/**
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* node 特殊属性
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*/
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const nodeExtraAttrs = {
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begin: {
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fill: "#9FD4FB"
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},
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end: {
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fill: "#C2E999"
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}
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};
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const data = {
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nodes: [
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{
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id: "1",
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label: "请求回放1（开始）",
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type: "begin"
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},
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{
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id: "2",
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label: "交易创建"
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},
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{
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id: "3",
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label: "请求回放3"
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},
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{
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id: "4",
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label: "请求回放4"
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},
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{
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id: "5",
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label: "请求回放5"
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},
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{
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id: "6",
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label: "请求回放6"
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},
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{
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id: "7",
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label: "请求回放2（结束）",
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type: "end"
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}
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],
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edges: [
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{
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source: "1",
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target: "2"
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},
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{
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source: "1",
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target: "3"
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},
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{
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source: "2",
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target: "5"
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},
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{
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source: "5",
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target: "6"
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},
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{
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source: "6",
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target: "7"
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},
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{
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source: "3",
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target: "4"
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},
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{
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source: "4",
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target: "7"
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}
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]
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};
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/**
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* 自定义节点
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*/
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G6.registerNode(
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2019-09-30 13:19:00 +08:00
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"rect-node",
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2019-08-20 17:17:56 +08:00
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{
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drawShape: function drawShape(cfg, group) {
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var rect = group.addShape("rect", {
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attrs: {
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x: -75,
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y: -25,
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width: 150,
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height: 50,
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radius: 4,
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fill: "#FFD591",
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fillOpacity: 1,
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...nodeExtraAttrs[cfg.type]
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}
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});
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return rect;
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},
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getAnchorPoints: function getAnchorPoints() {
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return [[0, 0.5], [1, 0.5]];
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}
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},
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"single-shape"
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);
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/**
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* 自定义带箭头的贝塞尔曲线 edge
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*/
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2019-09-30 13:19:00 +08:00
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G6.registerEdge("line-with-point", {
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2019-08-20 17:17:56 +08:00
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itemType: "edge",
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draw: function draw(cfg, group) {
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const startPoint = cfg.startPoint;
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const endPoint = cfg.endPoint;
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const centerPoint = {
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x: (startPoint.x + endPoint.x) / 2,
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y: (startPoint.y + endPoint.y) / 2
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};
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// 控制点坐标
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const controlPoint = {
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x: (startPoint.x + centerPoint.x) / 2,
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y: startPoint.y
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};
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console.log(cfg, startPoint, endPoint);
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// 为了更好的展示效果, 对称贝塞尔曲线需要连到箭头根部
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const path = group.addShape("path", {
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attrs: {
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path: [
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["M", startPoint.x, startPoint.y],
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[
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"Q",
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controlPoint.x + 8,
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controlPoint.y,
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centerPoint.x,
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centerPoint.y
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],
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["T", endPoint.x - 8, endPoint.y],
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["L", endPoint.x, endPoint.y]
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],
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stroke: "#ccc",
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lineWidth: 1.6,
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endArrow: {
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path: "M 4,0 L -4,-4 L -4,4 Z",
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d: 4
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}
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}
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});
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// 计算贝塞尔曲线上的中心点
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// 参考资料 https://stackoverflow.com/questions/54216448/how-to-find-a-middle-point-of-a-beizer-curve
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// const lineCenterPoint = {
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// x:
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// (1 / 8) * startPoint.x +
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// (3 / 8) * (controlPoint.x + 8) +
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// (3 / 8) * centerPoint.x +
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// (1 / 8) * (endPoint.x - 8),
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// y:
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// (1 / 8) * startPoint.y +
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// (3 / 8) * controlPoint.y +
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// (3 / 8) * centerPoint.y +
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// (1 / 8) * endPoint.y
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// };
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// 在贝塞尔曲线中心点上添加圆形
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const { source, target } = cfg;
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group.addShape("circle", {
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attrs: {
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id: `statusNode${source}-${target}`,
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r: 6,
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x: centerPoint.x,
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y: centerPoint.y,
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fill: cfg.active ? "#AB83E4" : "#ccc"
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}
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});
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return path;
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}
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});
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const g = new dagre.graphlib.Graph();
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g.setDefaultEdgeLabel(function() { return {}; });
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g.setGraph({ rankdir: 'LR' });
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data.nodes.forEach(node => {
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g.setNode(node.id + '', { width: 150, height: 50 });
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});
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data.edges.forEach(edge => {
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edge.source = edge.source + '';
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edge.target = edge.target + '';
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g.setEdge(edge.source, edge.target);
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});
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dagre.layout(g);
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let coord;
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g.nodes().forEach((node, i) => {
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coord = g.node(node);
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data.nodes[i].x = coord.x;
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data.nodes[i].y = coord.y;
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});
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g.edges().forEach((edge, i) => {
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coord = g.edge(edge);
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const startPoint = coord.points[0];
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const endPoint = coord.points[coord.points.length - 1];
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data.edges[i].startPoint = startPoint;
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data.edges[i].endPoint = endPoint;
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data.edges[i].controlPoints = coord.points.slice(
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1,
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coord.points.length - 1
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);
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});
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const graph = new G6.Graph({
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container: "mountNode",
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width: 1000,
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height: 800,
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defaultNode: {
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shape: "rect-node",
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labelCfg: {
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style: {
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fill: "#fff",
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fontSize: 14
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}
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}
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},
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defaultEdge: {
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shape: "line-with-point",
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style: {
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2019-08-20 17:17:56 +08:00
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endArrow: true,
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lineWidth: 2,
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stroke: "#ccc"
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}
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}
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});
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graph.data(data);
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graph.render();
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graph.on('edge:click', evt => {
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const { target } = evt
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const type = target.get('type')
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if(type === 'circle') {
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// 点击边上的circle
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alert('你点击的是边上的圆点')
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}
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})
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</script>
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</html>
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