markgojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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<title>GoJS® Geometry Class</title>
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<li><a href="../symbols/Brush.html" class="linkConstructor">Brush</a></li>
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<li><a href="../symbols/PathFigure.html" class="linkConstructor">PathFigure</a></li>
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<li><a href="../symbols/Point.html" class="linkConstructor">Point</a></li>
<li><a href="../symbols/Rect.html" class="linkConstructor">Rect</a></li>
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<!-- ============================== header ================================= -->
<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>
<!-- ============================== class title ============================ -->
<h2 class="classTitle">
Class Geometry
</h2>
<!-- ============================== class summary ========================== -->
<p class="classsummary">
The Geometry class is used to define the "shape" of a <a href="../symbols/Shape.html" class="linkConstructor">Shape</a>.
A Geometry can be simple straight lines, rectangles, or ellipses.
A Geometry can also be an arbitrarily complex path, consisting of a list of <a href="../symbols/PathFigure.html" class="linkConstructor">PathFigure</a>s.
<p>
A Geometry must not be modified once it has been used by a <a href="../symbols/Shape.html" class="linkConstructor">Shape</a>.
However, a Geometry may be shared by multiple Shapes.
<p>
It is commonplace to create Geometries using geometry path string syntax:
<a href="../../intro/geometry.html">Geometry Path Strings</a>.
However it is much more efficient to create Geometries programmatically.
One way to do that is illustrated by several of the samples that evaluate JavaScript such as:
<pre>
new go.Geometry()
.add(new go.PathFigure(p.x, p.y)
.add(new go.PathSegment(go.PathSegment.Arc, -sweep/2, sweep, 0, 0, radius+layerThickness, radius+layerThickness))
.add(new go.PathSegment(go.PathSegment.Line, q.x, q.y))
.add(new go.PathSegment(go.PathSegment.Arc, sweep/2, -sweep, 0, 0, radius, radius).close()));
</pre>
See samples that make use of Geometries in the <a href="../../samples/index.html#geometries">samples index</a>.
</p>
<!-- ============================== constructor summary ==================== -->
<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 Geometry.">
<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">
Geometry(type)
</div>
</td>
<td class="description">
<div class="description">
<!--newp--><p><p>Construct an empty Geometry.<span class="nodetails" id="xconGeometry"><a class="morelink" onclick="hst('conGeometry')">More...</a></span> <span class="details" id="conGeometry">
The geometry type must be one of the following values:
<a href="../symbols/Geometry.html#Line" class="linkConstant">Geometry.Line</a>, <a href="../symbols/Geometry.html#Ellipse" class="linkConstant">Geometry.Ellipse</a>, <a href="../symbols/Geometry.html#Rectangle" class="linkConstant">Geometry.Rectangle</a>, <a href="../symbols/Geometry.html#Path" class="linkConstant">Geometry.Path</a>.</span>
<dl class="detailList">
<dt class="heading">Parameters:</dt>
<dt>
<span class="light fixedFont">{EnumValue=}</span> <b>type</b>
</dt>
<dd>If not supplied, the default Geometry type is <a href="../symbols/Geometry.html#Path" class="linkConstant">Geometry.Path</a>.</dd>
</dl>
</div>
</td>
</tr>
</tbody>
</table>
</div><!-- class="table-responsive">-->
<!-- ============================== properties summary ===================== -->
<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 Geometry.">
<thead>
<tr>
<th scope="col" class="name">Name, Value Type</th>
<th scope="col" class="description">Description</th>
</tr>
</thead>
<tbody>
<tr id="bounds" >
<td class="name">
<div class="name">
bounds
</div>
<div class="attributes">
<span class="light">{<a href="../symbols/Rect.html" class="linkConstructor">Rect</a>}</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp <p> -->
<p>This read-only property returns a rectangle that contains all points within the Geometry.<span class="nodetails" id="xpropbounds"><a class="morelink" onclick="hst('propbounds')">More...</a></span> <span class="details" id="propbounds">
The result will always contain the origin (0, 0).</span>
</div>
</td>
</tr>
<tr id="defaultStretch" >
<td class="name">
<div class="name">
defaultStretch
</div>
<div class="attributes">
<span class="light">{EnumValue}</span>
<span class="since" title="since">1.5</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp <p> -->
<p>Gets or sets the <a href="../symbols/Shape.html#geometryStretch" class="linkProperty">Shape.geometryStretch</a> value the <a href="../symbols/Shape.html" class="linkConstructor">Shape</a> should use by default
when the <a href="../symbols/Shape.html#geometryStretch" class="linkProperty">Shape.geometryStretch</a> value is <a href="../symbols/GraphObject.html#None" class="linkConstant">GraphObject.None</a>.<span class="nodetails" id="xpropdefaultStretch"><a class="morelink" onclick="hst('propdefaultStretch')">More...</a></span> <span class="details" id="propdefaultStretch">
The default value is <a href="../symbols/GraphObject.html#Fill" class="linkConstant">GraphObject.Fill</a>.
Some figure generators return a Geometry with this property set to <a href="../symbols/GraphObject.html#Uniform" class="linkConstant">GraphObject.Uniform</a>,
in order to preserve its aspect ratio when used by a Shape that may have different sizes.</span>
</div>
</td>
</tr>
<tr id="endX" >
<td class="name">
<div class="name">
endX
</div>
<div class="attributes">
<span class="light">{number}</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp <p> -->
<p>Gets or sets the ending X coordinate of the Geometry if it is of type
<a href="../symbols/Geometry.html#Line" class="linkConstant">Line</a>, <a href="../symbols/Geometry.html#Rectangle" class="linkConstant">Rectangle</a>, or <a href="../symbols/Geometry.html#Ellipse" class="linkConstant">Ellipse</a>.<span class="nodetails" id="xpropendX"><a class="morelink" onclick="hst('propendX')">More...</a></span> <span class="details" id="propendX">
The initial value is zero.</span>
</div>
</td>
</tr>
<tr id="endY" >
<td class="name">
<div class="name">
endY
</div>
<div class="attributes">
<span class="light">{number}</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp <p> -->
<p>Gets or sets the ending Y coordinate of the Geometry if it is of type
<a href="../symbols/Geometry.html#Line" class="linkConstant">Line</a>, <a href="../symbols/Geometry.html#Rectangle" class="linkConstant">Rectangle</a>, or <a href="../symbols/Geometry.html#Ellipse" class="linkConstant">Ellipse</a>.<span class="nodetails" id="xpropendY"><a class="morelink" onclick="hst('propendY')">More...</a></span> <span class="details" id="propendY">
The initial value is zero.</span>
</div>
</td>
</tr>
<tr id="figures" >
<td class="name">
<div class="name">
figures
</div>
<div class="attributes">
<span class="light">{List.<PathFigure>}</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp <p> -->
<p>Gets or sets the <a href="../symbols/List.html" class="linkConstructor">List</a> of <a href="../symbols/PathFigure.html" class="linkConstructor">PathFigure</a>s
that describes the content of the
path for Geometries of type <a href="../symbols/Geometry.html#Path" class="linkConstant">Path</a>.
</div>
</td>
</tr>
<tr id="spot1" >
<td class="name">
<div class="name">
spot1
</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">
<!--newp <p> -->
<p>Gets or sets the spot an "Auto" <a href="../symbols/Panel.html" class="linkConstructor">Panel</a> will use for the top-left corner of any panel content
when the <a href="../symbols/Shape.html#spot1" class="linkProperty">Shape.spot1</a> value is <a href="../symbols/Spot.html#Default" class="linkConstant">Spot.Default</a>.<span class="nodetails" id="xpropspot1"><a class="morelink" onclick="hst('propspot1')">More...</a></span> <span class="details" id="propspot1">
The default value is <a href="../symbols/Spot.html#TopLeft" class="linkConstant">Spot.TopLeft</a>, at the top-left point of the bounds of the Shape.</span>
</div>
</td>
</tr>
<tr id="spot2" >
<td class="name">
<div class="name">
spot2
</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">
<!--newp <p> -->
<p>Gets or sets the spot an "Auto" <a href="../symbols/Panel.html" class="linkConstructor">Panel</a> will use for the bottom-right corner of any panel content
when the <a href="../symbols/Shape.html#spot2" class="linkProperty">Shape.spot2</a> value is <a href="../symbols/Spot.html#Default" class="linkConstant">Spot.Default</a>.<span class="nodetails" id="xpropspot2"><a class="morelink" onclick="hst('propspot2')">More...</a></span> <span class="details" id="propspot2">
The default value is <a href="../symbols/Spot.html#BottomRight" class="linkConstant">Spot.BottomRight</a>, at the bottom-right point of the bounds of the Shape.</span>
</div>
</td>
</tr>
<tr id="startX" >
<td class="name">
<div class="name">
startX
</div>
<div class="attributes">
<span class="light">{number}</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp <p> -->
<p>Gets or sets the starting X coordinate of the Geometry if it is of type
<a href="../symbols/Geometry.html#Line" class="linkConstant">Line</a>, <a href="../symbols/Geometry.html#Rectangle" class="linkConstant">Rectangle</a>, or <a href="../symbols/Geometry.html#Ellipse" class="linkConstant">Ellipse</a>.<span class="nodetails" id="xpropstartX"><a class="morelink" onclick="hst('propstartX')">More...</a></span> <span class="details" id="propstartX">
The initial value is zero.</span>
</div>
</td>
</tr>
<tr id="startY" >
<td class="name">
<div class="name">
startY
</div>
<div class="attributes">
<span class="light">{number}</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp <p> -->
<p>Gets or sets the starting Y coordinate of the Geometry if it is of type
<a href="../symbols/Geometry.html#Line" class="linkConstant">Line</a>, <a href="../symbols/Geometry.html#Rectangle" class="linkConstant">Rectangle</a>, or <a href="../symbols/Geometry.html#Ellipse" class="linkConstant">Ellipse</a>.<span class="nodetails" id="xpropstartY"><a class="morelink" onclick="hst('propstartY')">More...</a></span> <span class="details" id="propstartY">
The initial value is zero.</span>
</div>
</td>
</tr>
<tr id="type" >
<td class="name">
<div class="name">
type
</div>
<div class="attributes">
<span class="light">{EnumValue}</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp <p> -->
<p>Gets or sets the type of the Geometry.<span class="nodetails" id="xproptype"><a class="morelink" onclick="hst('proptype')">More...</a></span> <span class="details" id="proptype">
The default type is <a href="../symbols/Geometry.html#Path" class="linkConstant">Geometry.Path</a>.
Other permissible values are <a href="../symbols/Geometry.html#Line" class="linkConstant">Geometry.Line</a>, <a href="../symbols/Geometry.html#Ellipse" class="linkConstant">Geometry.Ellipse</a>,
or <a href="../symbols/Geometry.html#Rectangle" class="linkConstant">Geometry.Rectangle</a>.</span>
</div>
</td>
</tr>
</tbody>
</table>
</div><!-- class="table-responsive">-->
<!-- ============================== methods summary ======================== -->
<h2 class="summaryCaption">Method <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 methods documented in the class Geometry.">
<thead>
<tr>
<th scope="col" class="name">Name, Return Type</th>
<th scope="col" class="description">Description</th>
</tr>
</thead>
<tbody>
<tr id="add">
<td class="name">
<div class="name">
add(figure)
</div>
<div class="attributes">
<span class="light">{<a href="../symbols/Geometry.html" class="linkConstructor">Geometry</a>}</span>
<span class="since" title="since">1.5</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp--><p><p>Add a <a href="../symbols/PathFigure.html" class="linkConstructor">PathFigure</a> to the <a href="../symbols/Geometry.html#figures" class="linkProperty">figures</a> list.<span class="nodetails" id="xmethadd"><a class="morelink" onclick="hst('methadd')">More...</a></span> <span class="details" id="methadd"></span>
<dl class="detailList">
<dt class="heading">Parameters:</dt>
<dt>
<span class="light fixedFont">{<a href="../symbols/PathFigure.html" class="linkConstructor">PathFigure</a>}</span> <b>figure</b>
</dt>
<dd>a newly allocated unshared PathFigure that will become owned by this Geometry</dd>
</dl>
<dl class="detailList">
<dt class="heading">Returns:</dt>
<dt><span class="light fixedFont">{<a href="../symbols/Geometry.html" class="linkConstructor">Geometry</a>}</span> this</dt>
</dl>
</div>
</td>
</tr>
<tr id="computeBoundsWithoutOrigin">
<td class="name">
<div class="name">
computeBoundsWithoutOrigin()
</div>
<div class="attributes">
<span class="light">{<a href="../symbols/Rect.html" class="linkConstructor">Rect</a>}</span>
<span class="since" title="since">1.1</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp--><p><p>Computes the Geometry's bounds without adding an origin point, and returns those bounds as a rect.<span class="nodetails" id="xmethcomputeBoundsWithoutOrigin"><a class="morelink" onclick="hst('methcomputeBoundsWithoutOrigin')">More...</a></span> <span class="details" id="methcomputeBoundsWithoutOrigin">
This method does not modify the Geometry or its bounds.</span>
<dl class="detailList">
<dt class="heading">Returns:</dt>
<dt><span class="light fixedFont">{<a href="../symbols/Rect.html" class="linkConstructor">Rect</a>}</span> </dt>
</dl>
</div>
</td>
</tr>
<tr id="copy">
<td class="name">
<div class="name">
copy()
</div>
<div class="attributes">
<span class="light">{<a href="../symbols/Geometry.html" class="linkConstructor">Geometry</a>}</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp--><p><p>Create a copy of this Geometry, with the same values and figures.
<dl class="detailList">
<dt class="heading">Returns:</dt>
<dt><span class="light fixedFont">{<a href="../symbols/Geometry.html" class="linkConstructor">Geometry</a>}</span> </dt>
</dl>
</div>
</td>
</tr>
<tr id=".fillPath">
<td class="name">
<static>
<div class="name">
Geometry.fillPath(str)
</div>
<div class="attributes">
<span class="light">{string}</span>
<span class="since" title="since">1.1</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp--><p><p>Given a SVG or GoJS path string, returns a congruent path string with each pathfigure filled.<span class="nodetails" id="xmethfillPath"><a class="morelink" onclick="hst('methfillPath')">More...</a></span> <span class="details" id="methfillPath">
For instance, "M0 0 L22 22 L33 0" would become "F M0 0 L22 22 L33 0".</span>
<dl class="detailList">
<dt class="heading">Parameters:</dt>
<dt>
<span class="light fixedFont">{string}</span> <b>str</b>
</dt>
<dd></dd>
</dl>
<dl class="detailList">
<dt class="heading">Returns:</dt>
<dt><span class="light fixedFont">{string}</span> </dt>
</dl>
</div>
</td>
</tr>
<tr id="normalize">
<td class="name">
<div class="name">
normalize()
</div>
<div class="attributes">
<span class="light">{<a href="../symbols/Point.html" class="linkConstructor">Point</a>}</span>
<span class="since" title="since">1.1</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp--><p><p>Normalizes the Geometry points in place by ensuring the top-left bounds of the geometry lines up with (0, 0),
returning the <a href="../symbols/Point.html" class="linkConstructor">Point</a> (x, y) amount it was shifted.<span class="nodetails" id="xmethnormalize"><a class="morelink" onclick="hst('methnormalize')">More...</a></span> <span class="details" id="methnormalize">
After this method is called there will be no negative X or Y value for the Geometry's bounds,
and no empty space at the top-left of the Geometry.</span>
<dl class="detailList">
<dt class="heading">Returns:</dt>
<dt><span class="light fixedFont">{<a href="../symbols/Point.html" class="linkConstructor">Point</a>}</span> </dt>
</dl>
</div>
</td>
</tr>
<tr id="offset">
<td class="name">
<div class="name">
offset(x, y)
</div>
<div class="attributes">
<span class="light">{<a href="../symbols/Geometry.html" class="linkConstructor">Geometry</a>}</span>
<span class="since" title="since">1.1</span>
</div>
</td>
<td class="description">
<div class="description">
<!--newp--><p><p>Offsets the Geometry in place by a given (x, y) amount<span class="nodetails" id="xmethoffset"><a class="morelink" onclick="hst('methoffset')">More...</a></span> <span class="details" id="methoffset"></span>
<dl class="detailList">
<dt class="heading">Parameters:</dt>
<dt>
<span class="light fixedFont">{number}</span> <b>x</b>