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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>OpenLayers.Geometry.LinearRing - OpenLayers</title><link rel="stylesheet" type="text/css" href="../../../styles/main.css"><script language=JavaScript src="../../../javascript/main.js"></script><script language=JavaScript src="../../../javascript/prettify.js"></script><script language=JavaScript src="../../../javascript/searchdata.js"></script></head><body class="ContentPage" onLoad="NDOnLoad();prettyPrint();"><script language=JavaScript><!--
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<div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Geometry.LinearRing"></a>OpenLayers.<wbr>Geometry.<wbr>LinearRing</h1><div class=CBody><p>A Linear Ring is a special LineString which is closed.&nbsp; It closes itself automatically on every addPoint/removePoint by adding a copy of the first point as the last point.</p><p>Also, as it is the first in the line family to close itself, a getArea() function is defined to calculate the enclosed area of the linearRing</p><h4 class=CHeading>Inherits</h4><ul><li><a href="LineString-js.html#OpenLayers.Geometry.LineString" class=LClass id=link14 onMouseOver="ShowTip(event, 'tt14', 'link14')" onMouseOut="HideTip('tt14')">OpenLayers.Geometry.LineString</a></li></ul><!--START_ND_SUMMARY--><div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable><tr class="SMain"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing" >OpenLayers.<wbr>Geometry.<wbr>LinearRing</a></td><td class=SDescription>A Linear Ring is a special LineString which is closed. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.componentTypes" >componentTypes</a></td><td class=SDescription>{Array(String)} An array of class names representing the types of components that the collection can include. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.OpenLayers.Geometry.LinearRing" >OpenLayers.<wbr>Geometry.<wbr>LinearRing</a></td><td class=SDescription>Linear rings are constructed with an array of points. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.addComponent" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">addComponent</a></td><td class=SDescription>Adds a point to geometry components. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.removeComponent" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">removeComponent</a></td><td class=SDescription>Removes a point from geometry components.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.move" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">move</a></td><td class=SDescription>Moves a geometry by the given displacement along positive x and y axes. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.rotate" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">rotate</a></td><td class=SDescription>Rotate a geometry around some origin</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.resize" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">resize</a></td><td class=SDescription>Resize a geometry relative to some origin. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.transform" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">transform</a></td><td class=SDescription>Reproject the components geometry from source to dest.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.getCentroid" id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">getCentroid</a></td><td class=SDescription>{<a href="Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link8 onMouseOver="ShowTip(event, 'tt8', 'link8')" onMouseOut="HideTip('tt8')">OpenLayers.Geometry.Point</a>} The centroid of the collection</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.getArea" id=link9 onMouseOver="ShowTip(event, 'tt9', 'link9')" onMouseOut="HideTip('tt9')">getArea</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.getGeodesicArea" id=link10 onMouseOver="ShowTip(event, 'tt10', 'link10')" onMouseOut="HideTip('tt10')">getGeodesicArea</a></td><td class=SDescription>Calculate the approximate area of the polygon were it projected onto the earth. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.containsPoint" id=link11 onMouseOver="ShowTip(event, 'tt11', 'link11')" onMouseOut="HideTip('tt11')">containsPoint</a></td><td class=SDescription>Test if a point is inside a linear ring. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.intersects" id=link12 onMouseOver="ShowTip(event, 'tt12', 'link12')" onMouseOut="HideTip('tt12')">intersects</a></td><td class=SDescription>Determine if the input geometry intersects this one.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.LinearRing.getVertices" id=link13 onMouseOver="ShowTip(event, 'tt13', 'link13')" onMouseOut="HideTip('tt13')">getVertices</a></td><td class=SDescription>Return a list of all points in this geometry.</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>

<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.Properties"></a>Properties</h3></div></div>

<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.componentTypes"></a>componentTypes</h3><div class=CBody><p>{Array(String)} An array of class names representing the types of components that the collection can include.&nbsp;  A null value means the component types are not restricted.</p></div></div></div>

<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.Constructor"></a>Constructor</h3></div></div>

<div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.OpenLayers.Geometry.LinearRing"></a>OpenLayers.<wbr>Geometry.<wbr>LinearRing</h3><div class=CBody><p>Linear rings are constructed with an array of points.&nbsp;  This array can represent a closed or open ring.&nbsp;  If the ring is open (the last point does not equal the first point), the constructor will close the ring.&nbsp;  If the ring is already closed (the last point does equal the first point), it will be left closed.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>points</td><td class=CDLDescription>{Array(<a href="Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link15 onMouseOver="ShowTip(event, 'tt8', 'link15')" onMouseOut="HideTip('tt8')">OpenLayers.Geometry.Point</a>)} points</td></tr></table></div></div></div>

<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.Functions"></a>Functions</h3></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.addComponent"></a>addComponent</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>addComponent: function(</td><td class="PParameter  prettyprint " nowrap>point,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>index</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Adds a point to geometry components.&nbsp;  If the point is to be added to the end of the components array and it is the same as the last point already in that array, the duplicate point is not added.&nbsp;  This has the effect of closing the ring if it is not already closed, and doing the right thing if it is already closed.&nbsp;  This behavior can be overridden by calling the method with a non-null index as the second argument.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>point</td><td class=CDLDescription>{<a href="Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link16 onMouseOver="ShowTip(event, 'tt8', 'link16')" onMouseOut="HideTip('tt8')">OpenLayers.Geometry.Point</a>}</td></tr><tr><td class=CDLEntry>index</td><td class=CDLDescription>{Integer} Index into the array to insert the component</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} Was the Point successfully added?</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.removeComponent"></a>removeComponent</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>removeComponent: function(</td><td class="PParameter  prettyprint " nowrap>point</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Removes a point from geometry components.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>point</td><td class=CDLDescription>{<a href="Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link17 onMouseOver="ShowTip(event, 'tt8', 'link17')" onMouseOut="HideTip('tt8')">OpenLayers.Geometry.Point</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} The component was removed.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.move"></a>move</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>move: function(</td><td class="PParameter  prettyprint " nowrap>x,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>y</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Moves a geometry by the given displacement along positive x and y axes.&nbsp; This modifies the position of the geometry and clears the cached bounds.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>x</td><td class=CDLDescription>{Float} Distance to move geometry in positive x direction.</td></tr><tr><td class=CDLEntry>y</td><td class=CDLDescription>{Float} Distance to move geometry in positive y direction.</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.rotate"></a>rotate</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>rotate: function(</td><td class="PParameter  prettyprint " nowrap>angle,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>origin</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Rotate a geometry around some origin</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>angle</td><td class=CDLDescription>{Float} Rotation angle in degrees (measured counterclockwise from the positive x-axis)</td></tr><tr><td class=CDLEntry>origin</td><td class=CDLDescription>{<a href="Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link18 onMouseOver="ShowTip(event, 'tt8', 'link18')" onMouseOut="HideTip('tt8')">OpenLayers.Geometry.Point</a>} Center point for the rotation</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.resize"></a>resize</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>resize: function(</td><td class="PParameter  prettyprint " nowrap>scale,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>origin,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>ratio</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Resize a geometry relative to some origin.&nbsp;  Use this method to apply a uniform scaling to a geometry.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>scale</td><td class=CDLDescription>{Float} Factor by which to scale the geometry.&nbsp;  A scale of 2 doubles the size of the geometry in each dimension (lines, for example, will be twice as long, and polygons will have four times the area).</td></tr><tr><td class=CDLEntry>origin</td><td class=CDLDescription>{<a href="Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link19 onMouseOver="ShowTip(event, 'tt8', 'link19')" onMouseOut="HideTip('tt8')">OpenLayers.Geometry.Point</a>} Point of origin for resizing</td></tr><tr><td class=CDLEntry>ratio</td><td class=CDLDescription>{Float} Optional x:y ratio for resizing.&nbsp;  Default ratio is 1.</td></tr></table><h4 class=CHeading>Returns</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>{&lt;OpenLayers.Geometry&gt;}</td><td class=CDLDescription>The current geometry.</td></tr></table></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.transform"></a>transform</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>transform: function(</td><td class="PParameter  prettyprint " nowrap>source,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>dest</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Reproject the components geometry from source to dest.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>source</td><td class=CDLDescription>{<a href="../Projection-js.html#OpenLayers.Projection" class=LClass id=link20 onMouseOver="ShowTip(event, 'tt15', 'link20')" onMouseOut="HideTip('tt15')">OpenLayers.Projection</a>}</td></tr><tr><td class=CDLEntry>dest</td><td class=CDLDescription>{<a href="../Projection-js.html#OpenLayers.Projection" class=LClass id=link21 onMouseOver="ShowTip(event, 'tt15', 'link21')" onMouseOut="HideTip('tt15')">OpenLayers.Projection</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link22 onMouseOver="ShowTip(event, 'tt16', 'link22')" onMouseOut="HideTip('tt16')">OpenLayers.Geometry</a>}</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.getCentroid"></a>getCentroid</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getCentroid: function()</td></tr></table></blockquote><h4 class=CHeading>Returns</h4><p>{<a href="Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link23 onMouseOver="ShowTip(event, 'tt8', 'link23')" onMouseOut="HideTip('tt8')">OpenLayers.Geometry.Point</a>} The centroid of the collection</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.getArea"></a>getArea</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getArea: function()</td></tr></table></blockquote><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>Note</td><td class=CDLDescription>The area is positive if the ring is oriented CW, otherwise it will be negative.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Float} The signed area for a ring.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.getGeodesicArea"></a>getGeodesicArea</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getGeodesicArea: function(</td><td class="PParameter  prettyprint " nowrap>projection</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Calculate the approximate area of the polygon were it projected onto the earth.&nbsp;  Note that this area will be positive if ring is oriented clockwise, otherwise it will be negative.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>projection</td><td class=CDLDescription>{<a href="../Projection-js.html#OpenLayers.Projection" class=LClass id=link24 onMouseOver="ShowTip(event, 'tt15', 'link24')" onMouseOut="HideTip('tt15')">OpenLayers.Projection</a>} The spatial reference system for the geometry coordinates.&nbsp;  If not provided, Geographic/WGS84 is assumed.</td></tr></table><h4 class=CHeading>Reference</h4><p>Robert.&nbsp; G. Chamberlain and William H.&nbsp; Duquette, &ldquo;Some Algorithms for Polygons on a Sphere&rdquo;, JPL Publication 07-03, Jet Propulsion Laboratory, Pasadena, CA, June 2007 <a href="http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409" class=LURL target=_top>http://trs-new.jpl.nasa.gov<wbr>/dspace<wbr>/handle<wbr>/2014<wbr>/40409</a></p><h4 class=CHeading>Returns</h4><p>{float} The approximate signed geodesic area of the polygon in square meters.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.containsPoint"></a>containsPoint</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>containsPoint: function(</td><td class="PParameter  prettyprint " nowrap>point</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Test if a point is inside a linear ring.&nbsp;  For the case where a point is coincident with a linear ring edge, returns 1.&nbsp;  Otherwise, returns boolean.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>point</td><td class=CDLDescription>{<a href="Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link25 onMouseOver="ShowTip(event, 'tt8', 'link25')" onMouseOut="HideTip('tt8')">OpenLayers.Geometry.Point</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean | Number} The point is inside the linear ring.&nbsp;  Returns 1 if the point is coincident with an edge.&nbsp;  Returns boolean otherwise.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.intersects"></a>intersects</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>intersects: function(</td><td class="PParameter  prettyprint " nowrap>geometry</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Determine if the input geometry intersects this one.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link26 onMouseOver="ShowTip(event, 'tt16', 'link26')" onMouseOut="HideTip('tt16')">OpenLayers.Geometry</a>} Any type of geometry.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} The input geometry intersects this one.</p></div></div></div>

<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.LinearRing.getVertices"></a>getVertices</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getVertices: function(</td><td class="PParameter  prettyprint " nowrap>nodes</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Return a list of all points in this geometry.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>nodes</td><td class=CDLDescription>{Boolean} For lines, only return vertices that are endpoints.&nbsp;  If false, for lines, only vertices that are not endpoints will be returned.&nbsp;  If not provided, all vertices will be returned.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Array} A list of all vertices in the geometry.</p></div></div></div>

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<!--START_ND_TOOLTIPS-->
<div class=CToolTip id="tt1"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>addComponent: function(</td><td class="PParameter  prettyprint " nowrap>point,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>index</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Adds a point to geometry components. </div></div><div class=CToolTip id="tt2"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>removeComponent: function(</td><td class="PParameter  prettyprint " nowrap>point</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Removes a point from geometry components.</div></div><div class=CToolTip id="tt3"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>move: function(</td><td class="PParameter  prettyprint " nowrap>x,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>y</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Moves a geometry by the given displacement along positive x and y axes. </div></div><div class=CToolTip id="tt4"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>rotate: function(</td><td class="PParameter  prettyprint " nowrap>angle,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>origin</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Rotate a geometry around some origin</div></div><div class=CToolTip id="tt5"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>resize: function(</td><td class="PParameter  prettyprint " nowrap>scale,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>origin,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>ratio</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Resize a geometry relative to some origin. </div></div><div class=CToolTip id="tt6"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>transform: function(</td><td class="PParameter  prettyprint " nowrap>source,</td></tr><tr><td></td><td class="PParameter  prettyprint " nowrap>dest</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Reproject the components geometry from source to dest.</div></div><div class=CToolTip id="tt7"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getCentroid: function()</td></tr></table></blockquote>{OpenLayers.Geometry.Point} The centroid of the collection</div></div><div class=CToolTip id="tt8"><div class=CClass>Point geometry class.</div></div><div class=CToolTip id="tt9"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getArea: function()</td></tr></table></blockquote></div></div><div class=CToolTip id="tt10"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getGeodesicArea: function(</td><td class="PParameter  prettyprint " nowrap>projection</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Calculate the approximate area of the polygon were it projected onto the earth. </div></div><div class=CToolTip id="tt11"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>containsPoint: function(</td><td class="PParameter  prettyprint " nowrap>point</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Test if a point is inside a linear ring. </div></div><div class=CToolTip id="tt12"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>intersects: function(</td><td class="PParameter  prettyprint " nowrap>geometry</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Determine if the input geometry intersects this one.</div></div><div class=CToolTip id="tt13"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class="PBeforeParameters  prettyprint "nowrap>getVertices: function(</td><td class="PParameter  prettyprint " nowrap>nodes</td><td class="PAfterParameters  prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Return a list of all points in this geometry.</div></div><div class=CToolTip id="tt14"><div class=CClass>A LineString is a Curve which, once two points have been added to it, can never be less than two points long.</div></div><div class=CToolTip id="tt15"><div class=CClass>Methods for coordinate transforms between coordinate systems. </div></div><div class=CToolTip id="tt16"><div class=CClass>A Geometry is a description of a geographic object. </div></div><!--END_ND_TOOLTIPS-->




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