G6 - 自定义箭头

   <!DOCTYPE html>
    <html>
      <head>
        <meta charset="utf-8">
        <title>自定义箭头</title>
<script src="https://a.alipayobjects.com/jquery/jquery/1.11.1/jquery.js"></script>
<script src="https://gw.alipayobjects.com/os/antv/assets/g6/1.2.8/g6.min.js"></script>
      </head>
      <body>
          <div id="c1"></div>
 <script type="text/javascript">
var Util = G6.Util;
G6.registEdge('bezierQuadratic', {
  afterDraw: function(cfg, group, keyShape) {
    var points = cfg.points;
    var start = points[0];
    var end = points[points.length - 1];
    var center = keyShape.getPoint(0.5);
    var lineWidth = keyShape.attr('lineWidth');
    if(lineWidth < 5){
      lineWidth = 5;
    }
    // 关于自身坐标系构造一个形，作为箭头
    var arrow = group.addShape('polyline', {
      attrs:{
        points: [
          [-lineWidth/4, lineWidth/2],
          [lineWidth/4, 0],
          [-lineWidth/4, -lineWidth/2]
        ],
        stroke: '#333'
      },
      class: 'arrow'
    });
    Util.arrowTo(arrow, center.x, center.y, center.x, center.y, end.x, end.y);
  }
});
var data = {
  "source": {
    "nodes": [
      {
        "shape": "rect",
        "label": "文本",
        "x": 550,
        "y": 260,
        "id": "af11b7bc"
      },
      {
        "shape": "rect",
        "label": "文本",
        "x": 780,
        "y": 260,
        "id": "313ed868"
      }
    ],
    "edges": [
      {
        "source": "af11b7bc",
        "target": "313ed868",
        "id": "bd2bc602"
      },
      {
        "source": "313ed868",
        "target": "af11b7bc",
        "id": "1be6dc9f",
        "size": 2,
        "targetAnchor": 2,
        "sourceAnchor": 2
      },
      {
        "source": "af11b7bc",
        "target": "313ed868",
        "id": "3d463cd1",
        "targetAnchor": 0,
        "sourceAnchor": 0
      },
      {
        "source": "313ed868",
        "target": "af11b7bc",
        "id": "ba7e057c",
        "size": 6
      }
    ]
  }
};
var net = new G6.Net({
    id: 'c1',           // 容器ID
    width: 500,         // 画布宽
    height: 500,        // 画布高
    fitView: 'cc',      // 图居中自适应
    mode: 'none',       // 模式
    grid: {
      forceAlign: true, // 是否支持网格对齐
      cell: 10          // 网格大小
    }
  });
net.read(data);
net.edge().shape('bezierQuadratic');
net.render();
</script>

      </body>
    </html>
          
自定义箭头