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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>GoJS® TreeVertex Class</title> <script src="../../assets/js/jquery.min.js"></script> <script src="../../assets/js/bootstrap.min.js"></script> <script src="../../assets/js/highlight.js"></script> <script src="../../assets/js/api.js"></script> <script src="../../assets/js/fuse.min.js"></script> <link href="../../assets/css/bootstrap.min.css" rel="stylesheet" >  <link href="../../assets/css/main.css" rel="stylesheet" type="text/css"/> <link href="../../assets/css/api.css" rel="stylesheet" type="text/css"/>  <link rel="stylesheet" href="../../assets/css/highlight.css" type="text/css" media="all" /> </head> <body>  <nav id="non-fixed-nav" class="navbar navbar-inverse navbar-top"> <div class="container-fluid"> <div class="navbar-header"> <div class="navheader-container"> <div class="navheader-collapse" data-toggle="collapse" data-target="#navbar"> <a id="toplogo" 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class="table-cell" id="apisearch" data-base="../"> <div class="title">Search API</div> <div class="field"> <label for="search-field" class="search-icon"></label> <input id="search-field" type="text" /> </div> <ul class="results"> <li class="state loading">Preparing search index...</li> <li class="state failure">The search index is not available</li> </ul> </div> <div class="table-cell" id="apisumm"> <input type="checkbox" id="showsumms" /> <label class="apisumms" for="showsumms">Show Summaries</label> </div> </div> </div>  <div id="header" class="fineprint"> <b>GoJS</b>® Diagramming Components<br/>version 1.8.36 for JavaScript/HTML<br/>by <a href="https://www.nwoods.com/">Northwoods Software®</a> </div>  <h2 class="classTitle"> Class TreeVertex </h2>  <p class="classsummary"> <span class="extends"> Extends <a href="../symbols/LayoutVertex.html" class="linkConstructor">LayoutVertex</a>.</span> This holds <a href="../symbols/TreeLayout.html" class="linkConstructor">TreeLayout</a>-specific information about <a href="../symbols/Node.html" class="linkConstructor">Node</a>s. <p> This class inherits from <a href="../symbols/LayoutVertex.html" class="linkConstructor">LayoutVertex</a>. </p>  <h2 id="constructor" class="summaryCaption"> Constructor <span class="nodetails"> Summary</span><span class="details"> Details</span></h2> <div class="table-responsive"> <table class="summaryTable table table-bordered table-condensed" summary="A summary of the constructor documented in the class TreeVertex."> <thead> <tr> <th scope="col" class="name">Name</th> <th scope="col" class="description">Description</th> </tr> </thead> <tbody> <tr> <td class="name" > <div class="name"> TreeVertex() </div> </td> <td class="description"> <div class="description"> <p><p> </div> </td> </tr> </tbody> </table> </div>  <h2 class="summaryCaption">Properties<span class="nodetails"> Summary</span><span class="details"> Details</span></h2> <div class="table-responsive"> <table class="summaryTable table table-bordered table-condensed" summary="A summary of the properties documented in the class TreeVertex."> <thead> <tr> <th scope="col" class="name">Name, Value Type</th> <th scope="col" class="description">Description</th> </tr> </thead> <tbody> <tr id="alignment" > <td class="name"> <div class="name"> alignment </div> <div class="attributes"> <span class="light">{EnumValue}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets how this parent node should be aligned relative to its children.<span class="nodetails" id="xpropalignment"><a class="morelink" onclick="hst('propalignment')">More...</a></span> <span class="details" id="propalignment"> </span><div class="details" id="dpropalignment"><p> The default value is <a href="../symbols/TreeLayout.html#AlignmentCenterChildren" class="linkConstant">TreeLayout.AlignmentCenterChildren</a>. <p> This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass.</div> </div> </td> </tr> <tr id="angle" > <td class="name"> <div class="name"> angle </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the absolute angle at which this subtree should grow from this vertex.<span class="nodetails" id="xpropangle"><a class="morelink" onclick="hst('propangle')">More...</a></span> <span class="details" id="propangle"> </span><div class="details" id="dpropangle"><p> The default value is zero, meaning that general tree growth should proceed rightwards along the X axis. <p> This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass. By default this is the same as the Angle of the parent <a href="../symbols/TreeVertex.html" class="linkConstructor">TreeVertex</a>. However, after the initial propagation of property values, perhaps in an override of <a href="../symbols/TreeLayout.html#assignTreeVertexValues" class="linkMethod">TreeLayout.assignTreeVertexValues</a>, you could just set this property to specify the angle at which this node grows its subtrees.</div> </div> </td> </tr> <tr id="breadthLimit" > <td class="name"> <div class="name"> breadthLimit </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets how broad a node and its descendants should be.<span class="nodetails" id="xpropbreadthLimit"><a class="morelink" onclick="hst('propbreadthLimit')">More...</a></span> <span class="details" id="propbreadthLimit"> </span><div class="details" id="dpropbreadthLimit"><p> By default this is zero. A value of zero imposes no limit; a positive value will specify a limit for the total width of this subtree. <p> This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass.</div> </div> </td> </tr> <tr id="childPortSpot" > <td class="name"> <div class="name"> childPortSpot </div> <div class="attributes"> <span class="light">{<a href="../symbols/Spot.html" class="linkConstructor">Spot</a>}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the spot that children nodes' ports get as their ToSpot, if <a href="../symbols/TreeVertex.html#setsChildPortSpot" class="linkProperty">setsChildPortSpot</a> is true and the node has only a single port.<span class="nodetails" id="xpropchildPortSpot"><a class="morelink" onclick="hst('propchildPortSpot')">More...</a></span> <span class="details" id="propchildPortSpot"> </span><div class="details" id="dpropchildPortSpot"><p> The default value is <a href="../symbols/Spot.html#Default" class="linkConstant">Spot.Default</a>. <p> This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass. A value of <a href="../symbols/Spot.html#Default" class="linkConstant">Spot.Default</a> will cause the TreeLayout to assign a ToSpot based on the parent node's <a href="../symbols/TreeVertex.html#angle" class="linkProperty">TreeVertex.angle</a>. If the value is other than NoSpot, it is just assigned. When <a href="../symbols/TreeLayout.html#path" class="linkProperty">TreeLayout.path</a> is <a href="../symbols/TreeLayout.html#PathSource" class="linkConstant">TreeLayout.PathSource</a>, the port's FromSpot is set instead of the ToSpot.</div> </div> </td> </tr> <tr id="children" > <td class="name"> <div class="name"> children </div> <div class="attributes"> <span class="light">{Array.<TreeVertex>}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the logical children for this node.<span class="nodetails" id="xpropchildren"><a class="morelink" onclick="hst('propchildren')">More...</a></span> <span class="details" id="propchildren"> </span><div class="details" id="dpropchildren"><p> The default value is an empty array. <p> This structural property is computed in <a href="../symbols/TreeLayout.html#doLayout" class="linkMethod">TreeLayout.doLayout</a> when building the tree structures. You should probably not be setting this property.</div> </div> </td> </tr> <tr id="childrenCount" > <td class="name"> <div class="name"> childrenCount </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>This read-only property returns the number of immediate children this node has.<span class="nodetails" id="xpropchildrenCount"><a class="morelink" onclick="hst('propchildrenCount')">More...</a></span> <span class="details" id="propchildrenCount"> </span><div class="details" id="dpropchildrenCount"><p> The default value is zero.</div> </div> </td> </tr> <tr id="commentMargin" > <td class="name"> <div class="name"> commentMargin </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the space to leave between the node and the comments.<span class="nodetails" id="xpropcommentMargin"><a class="morelink" onclick="hst('propcommentMargin')">More...</a></span> <span class="details" id="propcommentMargin"> </span><div class="details" id="dpropcommentMargin"><p> The default value is 20. <p> Negative values may cause comments to overlap with the node. This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass.</div> </div> </td> </tr> <tr id="comments" > <td class="name"> <div class="name"> comments </div> <div class="attributes"> <span class="light">{Array.<Node>}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets an array of <a href="../symbols/Node.html" class="linkConstructor">Node</a>s that will be positioned near this node.<span class="nodetails" id="xpropcomments"><a class="morelink" onclick="hst('propcomments')">More...</a></span> <span class="details" id="propcomments"> </span><div class="details" id="dpropcomments"><p> The default value is null. <p> These objects should not have their own <a href="../symbols/TreeVertex.html" class="linkConstructor">TreeVertex</a>es to be laid out. Typically these will be <a href="../symbols/Node.html" class="linkConstructor">Node</a>s whose Category is "Comment". This array should be allocated and initialized in <a href="../symbols/TreeLayout.html#addComments" class="linkMethod">TreeLayout.addComments</a>.</div> </div> </td> </tr> <tr id="commentSpacing" > <td class="name"> <div class="name"> commentSpacing </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the space to leave between consecutive comments.<span class="nodetails" id="xpropcommentSpacing"><a class="morelink" onclick="hst('propcommentSpacing')">More...</a></span> <span class="details" id="propcommentSpacing"> </span><div class="details" id="dpropcommentSpacing"><p> The default value is 10. <p> Negative values may cause comments to overlap. This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass.</div> </div> </td> </tr> <tr id="compaction" > <td class="name"> <div class="name"> compaction </div> <div class="attributes"> <span class="light">{EnumValue}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets how the children of this node should be packed together.<span class="nodetails" id="xpropcompaction"><a class="morelink" onclick="hst('propcompaction')">More...</a></span> <span class="details" id="propcompaction"> </span><div class="details" id="dpropcompaction"><p> The default value is <a href="../symbols/TreeLayout.html#CompactionBlock" class="linkConstant">TreeLayout.CompactionBlock</a>. <p> This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass.</div> </div> </td> </tr> <tr id="comparer" > <td class="name"> <div class="name"> comparer </div> <div class="attributes"> <span class="light">{function(TreeVertex, TreeVertex):number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets how the children should be sorted.<span class="nodetails" id="xpropcomparer"><a class="morelink" onclick="hst('propcomparer')">More...</a></span> <span class="details" id="propcomparer"> </span><div class="details" id="dpropcomparer"><p> This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass.</div> </div> </td> </tr> <tr id="descendantCount" > <td class="name"> <div class="name"> descendantCount </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the number of descendants this node has.<span class="nodetails" id="xpropdescendantCount"><a class="morelink" onclick="hst('propdescendantCount')">More...</a></span> <span class="details" id="propdescendantCount"> </span><div class="details" id="dpropdescendantCount"><p> For a leaf node, this will be zero. <p> This informational property is computed as part of the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass. You should probably not be setting this property.</div> </div> </td> </tr> <tr id="initialized" > <td class="name"> <div class="name"> initialized </div> <div class="attributes"> <span class="light">{boolean}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets whether this node has been initialized as part of <a href="../symbols/TreeLayout.html#doLayout" class="linkMethod">TreeLayout.doLayout</a> when building the tree structures.<span class="nodetails" id="xpropinitialized"><a class="morelink" onclick="hst('propinitialized')">More...</a></span> <span class="details" id="propinitialized"> </span><div class="details" id="dpropinitialized"><p> The default value is false.</div> </div> </td> </tr> <tr id="layerSpacing" > <td class="name"> <div class="name"> layerSpacing </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the distance between this node and its children.<span class="nodetails" id="xproplayerSpacing"><a class="morelink" onclick="hst('proplayerSpacing')">More...</a></span> <span class="details" id="proplayerSpacing"> </span><div class="details" id="dproplayerSpacing"><p> The default value is 50. <p> Negative values may cause children to overlap with the parent. This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass.</div> </div> </td> </tr> <tr id="layerSpacingParentOverlap" > <td class="name"> <div class="name"> layerSpacingParentOverlap </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the fraction of this node's depth that may overlap with the children's layer.<span class="nodetails" id="xproplayerSpacingParentOverlap"><a class="morelink" onclick="hst('proplayerSpacingParentOverlap')">More...</a></span> <span class="details" id="proplayerSpacingParentOverlap"> </span><div class="details" id="dproplayerSpacingParentOverlap"><p> The default value is 0.0 -- there is overlap only if <a href="../symbols/TreeVertex.html#layerSpacing" class="linkProperty">layerSpacing</a> is negative. Values must range from 0.0 to 1.0, where 1.0 means the full depth of this node. <p> When this value is greater than 0.0, there might not be overlap if <a href="../symbols/TreeVertex.html#layerSpacing" class="linkProperty">layerSpacing</a> is larger than the depth of this node times this fraction. Even when this value is 0.0, there may be overlap when <a href="../symbols/TreeVertex.html#layerSpacing" class="linkProperty">layerSpacing</a> is negative. This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass.</div> </div> </td> </tr> <tr id="level" > <td class="name"> <div class="name"> level </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the number of single-parent ancestors this node has.<span class="nodetails" id="xproplevel"><a class="morelink" onclick="hst('proplevel')">More...</a></span> <span class="details" id="proplevel"> </span><div class="details" id="dproplevel"><p> This could also be interpreted as which layer this node is in. A root node will have a value of zero. <p> This informational property is computed in <a href="../symbols/TreeLayout.html#doLayout" class="linkMethod">TreeLayout.doLayout</a> when building the tree structures. You should probably not be setting this property.</div> </div> </td> </tr> <tr id="maxChildrenCount" > <td class="name"> <div class="name"> maxChildrenCount </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the maximum number of children of any descendant of this node.<span class="nodetails" id="xpropmaxChildrenCount"><a class="morelink" onclick="hst('propmaxChildrenCount')">More...</a></span> <span class="details" id="propmaxChildrenCount"> </span><div class="details" id="dpropmaxChildrenCount"><p> For a leaf node, this will be zero. <p> This informational property is computed as part of the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass. You should probably not be setting this property.</div> </div> </td> </tr> <tr id="maxGenerationCount" > <td class="name"> <div class="name"> maxGenerationCount </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the maximum depth of the subtrees below this node.<span class="nodetails" id="xpropmaxGenerationCount"><a class="morelink" onclick="hst('propmaxGenerationCount')">More...</a></span> <span class="details" id="propmaxGenerationCount"> </span><div class="details" id="dpropmaxGenerationCount"><p> For a leaf node, this will be zero. <p> This informational property is computed as part of the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass. You should probably not be setting this value.</div> </div> </td> </tr> <tr id="nodeIndent" > <td class="name"> <div class="name"> nodeIndent </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets or sets the distance the first child should be indented.<span class="nodetails" id="xpropnodeIndent"><a class="morelink" onclick="hst('propnodeIndent')">More...</a></span> <span class="details" id="propnodeIndent"> </span><div class="details" id="dpropnodeIndent"><p> The default value is zero. The value should be non-negative. <p> This inherited property is initialized in the <a href="../symbols/TreeLayout.html#initializeTreeVertexValues" class="linkMethod">TreeLayout.initializeTreeVertexValues</a> pass. This property is only sensible when the <a href="../symbols/TreeVertex.html#alignment" class="linkProperty">alignment</a> is <a href="../symbols/TreeLayout.html#AlignmentStart" class="linkConstant">TreeLayout.AlignmentStart</a> or <a href="../symbols/TreeLayout.html#AlignmentEnd" class="linkConstant">TreeLayout.AlignmentEnd</a>.</div> </div> </td> </tr> <tr id="nodeIndentPastParent" > <td class="name"> <div class="name"> nodeIndentPastParent </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">