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3 <html><head><title>OpenLayers.Geometry - 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/searchdata.js"></script></head><body class="ContentPage" onLoad="NDOnLoad()"><script language=JavaScript><!--
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14 <div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Geometry"></a>OpenLayers.<wbr>Geometry</h1><div class=CBody><p>A Geometry is a description of a geographic object. Create an instance of this class with the <a href="#OpenLayers.Geometry.OpenLayers.Geometry" class=LConstructor id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">OpenLayers.Geometry</a> constructor. This is a base class, typical geometry types are described by subclasses of this class.</p><!--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" >OpenLayers.<wbr>Geometry</a></td><td class=SDescription>A Geometry is a description of a geographic object. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Geometry.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.OpenLayers.Geometry" >OpenLayers.<wbr>Geometry</a></td><td class=SDescription>Creates a geometry object.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Geometry.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.clone" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">clone</a></td><td class=SDescription>Create a clone of this geometry. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.getBounds" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">getBounds</a></td><td class=SDescription>Get the bounds for this Geometry. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.calculateBounds" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">calculateBounds</a></td><td class=SDescription>Recalculate the bounds for the geometry.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.distanceTo" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">distanceTo</a></td><td class=SDescription>Calculate the closest distance between two geometries (on the x-y plane).</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Geometry.getVertices" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">getVertices</a></td><td class=SDescription>Return a list of all points in this geometry.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Geometry.getCentroid" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">getCentroid</a></td><td class=SDescription>Calculate the centroid of this geometry. </td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
16 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.Constructor"></a>Constructor</h3></div></div>
18 <div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.OpenLayers.Geometry"></a>OpenLayers.<wbr>Geometry</h3><div class=CBody><p>Creates a geometry object.</p></div></div></div>
20 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.Functions"></a>Functions</h3></div></div>
22 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.clone"></a>clone</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>clone: function()</td></tr></table></blockquote><p>Create a clone of this geometry. Does not set any non-standard properties of the cloned geometry.</p><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Geometry.OpenLayers.Geometry" class=LConstructor id=link8 onMouseOver="ShowTip(event, 'tt7', 'link8')" onMouseOut="HideTip('tt7')">OpenLayers.Geometry</a>} An exact clone of this geometry.</p></div></div></div>
24 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.getBounds"></a>getBounds</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>getBounds: function()</td></tr></table></blockquote><p>Get the bounds for this Geometry. If bounds is not set, it is calculated again, this makes queries faster.</p><h4 class=CHeading>Returns</h4><p>{<a href="BaseTypes/Bounds-js.html#OpenLayers.Bounds" class=LClass id=link9 onMouseOver="ShowTip(event, 'tt8', 'link9')" onMouseOut="HideTip('tt8')">OpenLayers.Bounds</a>}</p></div></div></div>
26 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.calculateBounds"></a>calculateBounds</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>calculateBounds: function()</td></tr></table></blockquote><p>Recalculate the bounds for the geometry.</p></div></div></div>
28 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.distanceTo"></a>distanceTo</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 nowrap>distanceTo: function(</td><td class=PParameter nowrap>geometry,</td></tr><tr><td></td><td class=PParameter nowrap>options</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Calculate the closest distance between two geometries (on the x-y plane).</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="#OpenLayers.Geometry.OpenLayers.Geometry" class=LConstructor id=link10 onMouseOver="ShowTip(event, 'tt7', 'link10')" onMouseOut="HideTip('tt7')">OpenLayers.Geometry</a>} The target geometry.</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional properties for configuring the distance calculation.</td></tr></table><p>Valid options depend on the specific geometry type.</p><h4 class=CHeading>Returns</h4><p>{Number | Object} The distance between this geometry and the target. If details is true, the return will be an object with distance, x0, y0, x1, and x2 properties. The x0 and y0 properties represent the coordinates of the closest point on this geometry. The x1 and y1 properties represent the coordinates of the closest point on the target geometry.</p></div></div></div>
30 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.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 nowrap>getVertices: function(</td><td class=PParameter nowrap>nodes</td><td class=PAfterParameters 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. If false, for lines, only vertices that are not endpoints will be returned. 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>
32 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Geometry.getCentroid"></a>getCentroid</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>getCentroid: function()</td></tr></table></blockquote><p>Calculate the centroid of this geometry. This method is defined in subclasses.</p><h4 class=CHeading>Returns</h4><p>{<a href="Geometry/Point-js.html#OpenLayers.Geometry.Point" class=LClass id=link11 onMouseOver="ShowTip(event, 'tt9', 'link11')" onMouseOut="HideTip('tt9')">OpenLayers.Geometry.Point</a>} The centroid of the collection</p></div></div></div>
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48 <div class=CToolTip id="tt1"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>clone: function()</td></tr></table></blockquote>Create a clone of this geometry. </div></div><div class=CToolTip id="tt2"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>getBounds: function()</td></tr></table></blockquote>Get the bounds for this Geometry. </div></div><div class=CToolTip id="tt3"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>calculateBounds: function()</td></tr></table></blockquote>Recalculate the bounds for the geometry.</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 nowrap>distanceTo: function(</td><td class=PParameter nowrap>geometry,</td></tr><tr><td></td><td class=PParameter nowrap>options</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Calculate the closest distance between two geometries (on the x-y plane).</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 nowrap>getVertices: function(</td><td class=PParameter nowrap>nodes</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote>Return a list of all points in this geometry.</div></div><div class=CToolTip id="tt6"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>getCentroid: function()</td></tr></table></blockquote>Calculate the centroid of this geometry. </div></div><div class=CToolTip id="tt7"><div class=CConstructor>Creates a geometry object.</div></div><div class=CToolTip id="tt8"><div class=CClass>Instances of this class represent bounding boxes. </div></div><div class=CToolTip id="tt9"><div class=CClass>Point geometry class.</div></div><!--END_ND_TOOLTIPS-->
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