Javascript Can'；t在D3图形上进行缩放

我尝试了许多方法来创建一个缩放到我的D3图形的根。 我的意思是从根开始为节点圆提供放大和缩小选项

<style>
        .node circle {
            fill: #fff;
            stroke: steelblue;
            stroke-width: 1.5px;
        }

        .node {
            font: 10px sans-serif;
        }

        .link {
            fill: none;
            stroke: #ccc;
            stroke-width: 1.5px;
        }
    </style>

---

将容器组元素附加到图形中，并将其类名设置为“drawArea”。现在添加以下代码

d3.select("svg")
  .call(d3.behavior.zoom()
    .scaleExtent([0.5, 5])
    .on("zoom", zoom));

function zoom() {
  var h = w = diameter * 2;
  var scale = d3.event.scale,
    translation = d3.event.translate,
    tbound = -h * scale,
    bbound = h * scale,
    lbound = -w * scale,
    rbound = w * scale;
  // limit translation to thresholds
  translation = [
    Math.max(Math.min(translation[0], rbound), lbound),
    Math.max(Math.min(translation[1], bbound), tbound)
  ];
  d3.select(".drawArea")
    .attr("transform", "translate(" + translation + ")" +
      " scale(" + scale + ")");
}

工作代码片段：

var flare={
“名称”：“flare”，
“儿童”：[{
“名称”：“分析”，
“儿童”：[{
“名称”：“集群”，
“儿童”：[{
“名称”：“凝聚集群”，
“尺寸”：3938
}, {
“名称”：“社区结构”，
“尺寸”：3812
}, {
“名称”：“HierarchycalCluster”，
“尺寸”：6714
}, {
“名称”：“合并边缘”，
“尺寸”：743
}]
}, {
“名称”：“图形”，
“儿童”：[{
“名称”：“中间的中心”，
“尺寸”：3534
}, {
“名称”：“链接距离”，
“尺寸”：5731
}, {
“名称”：“MaxFlowMinCut”，
“尺寸”：7840
}, {
“名称”：“最短路径”，
“尺寸”：5914
}, {
“名称”：“SpanningTree”，
“尺寸”：3416
}]
}, {
“名称”：“优化”，
“儿童”：[{
“名称”：“AspectRatioBanker”，
“尺寸”：7074
}]
}]
}, {
“名称”：“动画”，
“儿童”：[{
“名称”：“缓解”，
“尺寸”：17010
}, {
“名称”：“函数序列”，
“尺寸”：5842
}, {
“名称”：“插入”，
“儿童”：[{
“名称”：“ArrayInterpolator”，
“规模”：1983年
}, {
“名称”：“彩色插值器”，
“大小”：2047
}, {
“名称”：“日期插值器”，
“尺寸”：1375
}, {
“名称”：“插值器”，
“尺寸”：8746
}, {
“名称”：“MatrixInterpolator”，
“尺寸”：2202
}, {
“名称”：“NumberInterpolator”，
“尺寸”：1382
}, {
“名称”：“ObjectInterpolator”，
“大小”：1629
}, {
“名称”：“点插值器”，
“尺寸”：1675
}, {
“名称”：“矩形插值器”，
“尺寸”：2042
}]
}, {
“名称”：“不可计划”，
“尺寸”：1041
}, {
“名称”：“平行”，
“尺寸”：5176
}, {
“名称”：“暂停”，
“尺寸”：449
}, {
“名称”：“调度程序”，
“尺寸”：5593
}, {
“名称”：“顺序”，
“尺寸”：5534
}, {
“名称”：“过渡”，
“尺寸”：9201
}, {
“名称”：“中转人”，
“大小”：19975
}, {
“名称”：“TransitionEvent”，
“尺寸”：1116
}, {
“名称”：“吐温”，
“尺寸”：6006
}]
}, {
“名称”：“数据”，
“儿童”：[{
“名称”：“转换器”，
“儿童”：[{
“名称”：“转换器”，
“尺寸”：721
}, {
“名称”：“DelimitedTextConverter”，
“尺寸”：4294
}, {
“名称”：“图形转换器”，
“尺寸”：9800
}, {
“名称”：“IDataConverter”，
“尺寸”：1314
}, {
“名称”：“JSONConverter”，
“尺寸”：2220
}]
}, {
“名称”：“数据字段”，
“大小”：1759
}, {
“名称”：“数据模式”，
“尺寸”：2165
}, {
“名称”：“数据集”，
“尺寸”：586
}, {
“名称”：“数据源”，
“尺寸”：3331
}, {
“名称”：“数据表”，
“尺寸”：772
}, {
“名称”：“DataUtil”，
“尺寸”：3322
}]
}, {
“名称”：“显示”，
“儿童”：[{
“名称”：“肮脏精灵”，
“尺寸”：8833
}, {
“名称”：“线条精灵”，
“尺寸”：1732
}, {
“名称”：“矩形精灵”，
“尺寸”：3623
}, {
“名称”：“TextSprite”，
“尺寸”：10066
}]
}, {
“名称”：“flex”，
“儿童”：[{
“名称”：“FlareVis”，
“尺寸”：4116
}]
}, {
“名称”：“物理学”，
“儿童”：[{
“名称”：“牵引力”，
“尺寸”：1082
}, {
“名称”：“重力力”，
“尺寸”：1336
}, {
“名称”：“IForce”，
“尺寸”：319
}, {
“名称”：“NBodyForce”，
“尺寸”：10498
}, {
“名称”：“粒子”，
“尺寸”：2822
}, {
“名称”：“模拟”，
“尺寸”：9983
}, {
“名称”：“弹簧”，
“尺寸”：2213
}, {
“名称”：“SpringForce”，
“尺寸”：1681
}]
}, {
“名称”：“查询”，
“儿童”：[{
“名称”：“聚合表达式”，
“尺寸”：1616
}, {
“名称”：“和”，
“大小”：1027
}, {
“名称”：“算术”，
“尺寸”：3891
}, {
“名称”：“平均值”，
“尺寸”：891
}, {
“名称”：“二进制表达式”，
“尺寸”：2893
}, {
“名称”：“比较”，
“尺寸”：5103
}, {
“名称”：“复合表达式”，
“尺寸”：3677
}, {
“名称”：“计数”，
“尺寸”：781
}, {
“名称”：“DateUtil”，
“大小”：4141
}, {
“名称”：“不同”，
“尺寸”：933
}, {
“名称”：“表达式”，
“尺寸”：5130
}, {
“名称”：“ExpressionIterator”，
“尺寸”：3617
}, {
“名称”：“Fn”，
“尺寸”：3240
}, {
“名称”：“如果”，
“尺寸”：2732
}, {
“名称”：“IsA”，
“大小”：2039
}, {
“名称”：“文字”，
“尺寸”：1214
}, {
“名称”：“匹配”，
“尺寸”：3748
}, {
“名称”：“最大值”，
“尺寸”：843
}, {
“名称”：“方法”，
“儿童”：[{
“名称”：“添加”，
“尺寸”：593
}, {
“名称”：“和”，
“尺寸”：330
}, {
“名称”：“平均值”，
“尺寸”：287
}, {
“名称”：“计数”，
“尺寸”：277
}, {
“名称”：“不同”，
“尺寸”：292
}, {
“名称”：“div”，
“尺寸”：595
}, {
“名称”：“eq”，
“尺寸”：594
}, {
“名称”：“fn”，
“尺寸”：460
}, {
“名称”：“gt”，
“尺寸”：603
}, {
“名称”：“gte”，
“尺寸”：625
}, {
“名称”：“iff”，
“尺寸”：748
}, {
“名称”：“isa”，
“尺寸”：461
},
{
    "name": "flare",
    "children": [
     {
         "name": "analytics",
         "children": [
          {
              "name": "cluster",
              "children": [
               {"name": "AgglomerativeCluster", "size": 3938},
               {"name": "CommunityStructure", "size": 3812},
               {"name": "HierarchicalCluster", "size": 6714},
               {"name": "MergeEdge", "size": 743}
              ]
          },
          {
              "name": "graph",
              "children": [
               {"name": "BetweennessCentrality", "size": 3534},
               {"name": "LinkDistance", "size": 5731},
               {"name": "MaxFlowMinCut", "size": 7840},
               {"name": "ShortestPaths", "size": 5914},
               {"name": "SpanningTree", "size": 3416}
              ]
          },
          {
              "name": "optimization",
              "children": [
               {"name": "AspectRatioBanker", "size": 7074}
              ]
          }
         ]
     },
     {
         "name": "animate",
         "children": [
          {"name": "Easing", "size": 17010},
          {"name": "FunctionSequence", "size": 5842},
          {
              "name": "interpolate",
              "children": [
               {"name": "ArrayInterpolator", "size": 1983},
               {"name": "ColorInterpolator", "size": 2047},
               {"name": "DateInterpolator", "size": 1375},
               {"name": "Interpolator", "size": 8746},
               {"name": "MatrixInterpolator", "size": 2202},
               {"name": "NumberInterpolator", "size": 1382},
               {"name": "ObjectInterpolator", "size": 1629},
               {"name": "PointInterpolator", "size": 1675},
               {"name": "RectangleInterpolator", "size": 2042}
              ]
          },
          {"name": "ISchedulable", "size": 1041},
          {"name": "Parallel", "size": 5176},
          {"name": "Pause", "size": 449},
          {"name": "Scheduler", "size": 5593},
          {"name": "Sequence", "size": 5534},
          {"name": "Transition", "size": 9201},
          {"name": "Transitioner", "size": 19975},
          {"name": "TransitionEvent", "size": 1116},
          {"name": "Tween", "size": 6006}
         ]
     },
     {
         "name": "data",
         "children": [
          {
              "name": "converters",
              "children": [
               {"name": "Converters", "size": 721},
               {"name": "DelimitedTextConverter", "size": 4294},
               {"name": "GraphMLConverter", "size": 9800},
               {"name": "IDataConverter", "size": 1314},
               {"name": "JSONConverter", "size": 2220}
              ]
          },
          {"name": "DataField", "size": 1759},
          {"name": "DataSchema", "size": 2165},
          {"name": "DataSet", "size": 586},
          {"name": "DataSource", "size": 3331},
          {"name": "DataTable", "size": 772},
          {"name": "DataUtil", "size": 3322}
         ]
     },
     {
         "name": "display",
         "children": [
          {"name": "DirtySprite", "size": 8833},
          {"name": "LineSprite", "size": 1732},
          {"name": "RectSprite", "size": 3623},
          {"name": "TextSprite", "size": 10066}
         ]
     },
     {
         "name": "flex",
         "children": [
          {"name": "FlareVis", "size": 4116}
         ]
     },
     {
         "name": "physics",
         "children": [
          {"name": "DragForce", "size": 1082},
          {"name": "GravityForce", "size": 1336},
          {"name": "IForce", "size": 319},
          {"name": "NBodyForce", "size": 10498},
          {"name": "Particle", "size": 2822},
          {"name": "Simulation", "size": 9983},
          {"name": "Spring", "size": 2213},
          {"name": "SpringForce", "size": 1681}
         ]
     },
     {
         "name": "query",
         "children": [
          {"name": "AggregateExpression", "size": 1616},
          {"name": "And", "size": 1027},
          {"name": "Arithmetic", "size": 3891},
          {"name": "Average", "size": 891},
          {"name": "BinaryExpression", "size": 2893},
          {"name": "Comparison", "size": 5103},
          {"name": "CompositeExpression", "size": 3677},
          {"name": "Count", "size": 781},
          {"name": "DateUtil", "size": 4141},
          {"name": "Distinct", "size": 933},
          {"name": "Expression", "size": 5130},
          {"name": "ExpressionIterator", "size": 3617},
          {"name": "Fn", "size": 3240},
          {"name": "If", "size": 2732},
          {"name": "IsA", "size": 2039},
          {"name": "Literal", "size": 1214},
          {"name": "Match", "size": 3748},
          {"name": "Maximum", "size": 843},
          {
              "name": "methods",
              "children": [
               {"name": "add", "size": 593},
               {"name": "and", "size": 330},
               {"name": "average", "size": 287},
               {"name": "count", "size": 277},
               {"name": "distinct", "size": 292},
               {"name": "div", "size": 595},
               {"name": "eq", "size": 594},
               {"name": "fn", "size": 460},
               {"name": "gt", "size": 603},
               {"name": "gte", "size": 625},
               {"name": "iff", "size": 748},
               {"name": "isa", "size": 461},
               {"name": "lt", "size": 597},
               {"name": "lte", "size": 619},
               {"name": "max", "size": 283},
               {"name": "min", "size": 283},
               {"name": "mod", "size": 591},
               {"name": "mul", "size": 603},
               {"name": "neq", "size": 599},
               {"name": "not", "size": 386},
               {"name": "or", "size": 323},
               {"name": "orderby", "size": 307},
               {"name": "range", "size": 772},
               {"name": "select", "size": 296},
               {"name": "stddev", "size": 363},
               {"name": "sub", "size": 600},
               {"name": "sum", "size": 280},
               {"name": "update", "size": 307},
               {"name": "variance", "size": 335},
               {"name": "where", "size": 299},
               {"name": "xor", "size": 354},
               {"name": "_", "size": 264}
              ]
          },
          {"name": "Minimum", "size": 843},
          {"name": "Not", "size": 1554},
          {"name": "Or", "size": 970},
          {"name": "Query", "size": 13896},
          {"name": "Range", "size": 1594},
          {"name": "StringUtil", "size": 4130},
          {"name": "Sum", "size": 791},
          {"name": "Variable", "size": 1124},
          {"name": "Variance", "size": 1876},
          {"name": "Xor", "size": 1101}
         ]
     },
     {
         "name": "scale",
         "children": [
          {"name": "IScaleMap", "size": 2105},
          {"name": "LinearScale", "size": 1316},
          {"name": "LogScale", "size": 3151},
          {"name": "OrdinalScale", "size": 3770},
          {"name": "QuantileScale", "size": 2435},
          {"name": "QuantitativeScale", "size": 4839},
          {"name": "RootScale", "size": 1756},
          {"name": "Scale", "size": 4268},
          {"name": "ScaleType", "size": 1821},
          {"name": "TimeScale", "size": 5833}
         ]
     },
     {
         "name": "util",
         "children": [
          {"name": "Arrays", "size": 8258},
          {"name": "Colors", "size": 10001},
          {"name": "Dates", "size": 8217},
          {"name": "Displays", "size": 12555},
          {"name": "Filter", "size": 2324},
          {"name": "Geometry", "size": 10993},
          {
              "name": "heap",
              "children": [
               {"name": "FibonacciHeap", "size": 9354},
               {"name": "HeapNode", "size": 1233}
              ]
          },
          {"name": "IEvaluable", "size": 335},
          {"name": "IPredicate", "size": 383},
          {"name": "IValueProxy", "size": 874},
          {
              "name": "math",
              "children": [
               {"name": "DenseMatrix", "size": 3165},
               {"name": "IMatrix", "size": 2815},
               {"name": "SparseMatrix", "size": 3366}
              ]
          },
          {"name": "Maths", "size": 17705},
          {"name": "Orientation", "size": 1486},
          {
              "name": "palette",
              "children": [
               {"name": "ColorPalette", "size": 6367},
               {"name": "Palette", "size": 1229},
               {"name": "ShapePalette", "size": 2059},
               {"name": "SizePalette", "size": 2291}
              ]
          },
          {"name": "Property", "size": 5559},
          {"name": "Shapes", "size": 19118},
          {"name": "Sort", "size": 6887},
          {"name": "Stats", "size": 6557},
          {"name": "Strings", "size": 22026}
         ]
     },
     {
         "name": "vis",
         "children": [
          {
              "name": "axis",
              "children": [
               {"name": "Axes", "size": 1302},
               {"name": "Axis", "size": 24593},
               {"name": "AxisGridLine", "size": 652},
               {"name": "AxisLabel", "size": 636},
               {"name": "CartesianAxes", "size": 6703}
              ]
          },
          {
              "name": "controls",
              "children": [
               {"name": "AnchorControl", "size": 2138},
               {"name": "ClickControl", "size": 3824},
               {"name": "Control", "size": 1353},
               {"name": "ControlList", "size": 4665},
               {"name": "DragControl", "size": 2649},
               {"name": "ExpandControl", "size": 2832},
               {"name": "HoverControl", "size": 4896},
               {"name": "IControl", "size": 763},
               {"name": "PanZoomControl", "size": 5222},
               {"name": "SelectionControl", "size": 7862},
               {"name": "TooltipControl", "size": 8435}
              ]
          },
          {
              "name": "data",
              "children": [
               {"name": "Data", "size": 20544},
               {"name": "DataList", "size": 19788},
               {"name": "DataSprite", "size": 10349},
               {"name": "EdgeSprite", "size": 3301},
               {"name": "NodeSprite", "size": 19382},
               {
                   "name": "render",
                   "children": [
                    {"name": "ArrowType", "size": 698},
                    {"name": "EdgeRenderer", "size": 5569},
                    {"name": "IRenderer", "size": 353},
                    {"name": "ShapeRenderer", "size": 2247}
                   ]
               },
               {"name": "ScaleBinding", "size": 11275},
               {"name": "Tree", "size": 7147},
               {"name": "TreeBuilder", "size": 9930}
              ]
          },
          {
              "name": "events",
              "children": [
               {"name": "DataEvent", "size": 2313},
               {"name": "SelectionEvent", "size": 1880},
               {"name": "TooltipEvent", "size": 1701},
               {"name": "VisualizationEvent", "size": 1117}
              ]
          },
          {
              "name": "legend",
              "children": [
               {"name": "Legend", "size": 20859},
               {"name": "LegendItem", "size": 4614},
               {"name": "LegendRange", "size": 10530}
              ]
          },
          {
              "name": "operator",
              "children": [
               {
                   "name": "distortion",
                   "children": [
                    {"name": "BifocalDistortion", "size": 4461},
                    {"name": "Distortion", "size": 6314},
                    {"name": "FisheyeDistortion", "size": 3444}
                   ]
               },
               {
                   "name": "encoder",
                   "children": [
                    {"name": "ColorEncoder", "size": 3179},
                    {"name": "Encoder", "size": 4060},
                    {"name": "PropertyEncoder", "size": 4138},
                    {"name": "ShapeEncoder", "size": 1690},
                    {"name": "SizeEncoder", "size": 1830}
                   ]
               },
               {
                   "name": "filter",
                   "children": [
                    {"name": "FisheyeTreeFilter", "size": 5219},
                    {"name": "GraphDistanceFilter", "size": 3165},
                    {"name": "VisibilityFilter", "size": 3509}
                   ]
               },
               {"name": "IOperator", "size": 1286},
               {
                   "name": "label",
                   "children": [
                    {"name": "Labeler", "size": 9956},
                    {"name": "RadialLabeler", "size": 3899},
                    {"name": "StackedAreaLabeler", "size": 3202}
                   ]
               },
               {
                   "name": "layout",
                   "children": [
                    {"name": "AxisLayout", "size": 6725},
                    {"name": "BundledEdgeRouter", "size": 3727},
                    {"name": "CircleLayout", "size": 9317},
                    {"name": "CirclePackingLayout", "size": 12003},
                    {"name": "DendrogramLayout", "size": 4853},
                    {"name": "ForceDirectedLayout", "size": 8411},
                    {"name": "IcicleTreeLayout", "size": 4864},
                    {"name": "IndentedTreeLayout", "size": 3174},
                    {"name": "Layout", "size": 7881},
                    {"name": "NodeLinkTreeLayout", "size": 12870},
                    {"name": "PieLayout", "size": 2728},
                    {"name": "RadialTreeLayout", "size": 12348},
                    {"name": "RandomLayout", "size": 870},
                    {"name": "StackedAreaLayout", "size": 9121},
                    {"name": "TreeMapLayout", "size": 9191}
                   ]
               },
               {"name": "Operator", "size": 2490},
               {"name": "OperatorList", "size": 5248},
               {"name": "OperatorSequence", "size": 4190},
               {"name": "OperatorSwitch", "size": 2581},
               {"name": "SortOperator", "size": 2023}
              ]
          },
          {"name": "Visualization", "size": 16540}
         ]
     }
    ]
}

d3.select("svg")
  .call(d3.behavior.zoom()
    .scaleExtent([0.5, 5])
    .on("zoom", zoom));

function zoom() {
  var h = w = diameter * 2;
  var scale = d3.event.scale,
    translation = d3.event.translate,
    tbound = -h * scale,
    bbound = h * scale,
    lbound = -w * scale,
    rbound = w * scale;
  // limit translation to thresholds
  translation = [
    Math.max(Math.min(translation[0], rbound), lbound),
    Math.max(Math.min(translation[1], bbound), tbound)
  ];
  d3.select(".drawArea")
    .attr("transform", "translate(" + translation + ")" +
      " scale(" + scale + ")");
}