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<div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.ElementsIndexer"></a>OpenLayers.<wbr>ElementsIndexer</h1><div class=CBody><p>This class takes care of figuring out which order elements should be placed in the DOM based on given indexing methods.</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.ElementsIndexer" >OpenLayers.<wbr>ElementsIndexer</a></td><td class=SDescription>This class takes care of figuring out which order elements should be placed in the DOM based on given indexing methods.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.maxZIndex" >maxZIndex</a></td><td class=SDescription>{Integer} This is the largest-most z-index value for a node contained within the indexer.</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.order" >order</a></td><td class=SDescription>{Array<String>} This is an array of node id’s stored in the order that they should show up on screen. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.indices" >indices</a></td><td class=SDescription>{Object} This is a hash that maps node ids to their z-index value stored in the indexer. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.compare" >compare</a></td><td class=SDescription>{Function} This is the function used to determine placement of of a new node within the indexer. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.initialize" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">initialize</a></td><td class=SDescription>Create a new indexer with</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.insert" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">insert</a></td><td class=SDescription>Insert a new node into the indexer. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.remove" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">remove</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.clear" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">clear</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.exists" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">exists</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.getZIndex" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">getZIndex</a></td><td class=SDescription>Get the z-index value for the current node from the node data itself.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.determineZIndex" id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">determineZIndex</a></td><td class=SDescription>Determine the z-index for the current node if there isn’t one, and set the maximum value if we’ve found a new maximum.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.getNextElement" id=link8 onMouseOver="ShowTip(event, 'tt8', 'link8')" onMouseOut="HideTip('tt8')">getNextElement</a></td><td class=SDescription>Get the next element in the order stack.</td></tr><tr class="SClass"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods" >OpenLayers.<wbr>ElementsIndexer.<wbr>IndexingMethods</a></td><td class=SDescription>These are the compare methods for figuring out where a new node should be placed within the indexer. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER" id=link9 onMouseOver="ShowTip(event, 'tt9', 'link9')" onMouseOut="HideTip('tt9')">Z_ORDER</a></td><td class=SDescription>This compare method is used by other comparison methods. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER_DRAWING_ORDER" id=link10 onMouseOver="ShowTip(event, 'tt10', 'link10')" onMouseOut="HideTip('tt10')">Z_ORDER_DRAWING_ORDER</a></td><td class=SDescription>This method orders nodes by their z-index, but does so in a way that, if there are other nodes with the same z-index, the newest drawn will be the front most within that z-index. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER_Y_ORDER" id=link11 onMouseOver="ShowTip(event, 'tt11', 'link11')" onMouseOut="HideTip('tt11')">Z_ORDER_Y_ORDER</a></td><td class=SDescription>This one should really be called Z_ORDER_Y_ORDER_DRAWING_ORDER, as it best describes which ordering methods have precedence (though, the name would be too long). </td></tr><tr class="SClass"><td class=SEntry><a href="#OpenLayers.Renderer.Elements" >OpenLayers.<wbr>Renderer.<wbr>Elements</a></td><td class=SDescription>This is another virtual class in that it should never be instantiated by itself as a Renderer. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.rendererRoot" >rendererRoot</a></td><td class=SDescription>{DOMElement}</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.root" >root</a></td><td class=SDescription>{DOMElement}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.vectorRoot" >vectorRoot</a></td><td class=SDescription>{DOMElement}</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.textRoot" >textRoot</a></td><td class=SDescription>{DOMElement}</td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.xmlns" >xmlns</a></td><td class=SDescription>{String}</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.xOffset" >xOffset</a></td><td class=SDescription>{Number} Offset to apply to the renderer viewport translation in x direction. </td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.rightOfDateLine" >rightOfDateLine</a></td><td class=SDescription>{Boolean} Keeps track of the location of the map extent relative to the date line. </td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Indexer" >Indexer</a></td><td class=SDescription>{<OpenLayers.ElementIndexer>} An instance of OpenLayers.ElementsIndexer created upon initialization if the zIndexing or yOrdering options passed to this renderer’s constructor are set to true.</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Constants" >Constants</a></td><td class=SDescription></td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.BACKGROUND_ID_SUFFIX" >BACKGROUND_ID_SUFFIX</a></td><td class=SDescription>{String}</td></tr><tr class="SConstant SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.LABEL_ID_SUFFIX" >LABEL_ID_SUFFIX</a></td><td class=SDescription>{String}</td></tr><tr class="SConstant SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.LABEL_OUTLINE_SUFFIX" >LABEL_OUTLINE_SUFFIX</a></td><td class=SDescription>{String}</td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.OpenLayers.Renderer.Elements" >OpenLayers.<wbr>Renderer.<wbr>Elements</a></td><td class=SDescription></td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.destroy" id=link12 onMouseOver="ShowTip(event, 'tt12', 'link12')" onMouseOut="HideTip('tt12')">destroy</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.clear" id=link13 onMouseOver="ShowTip(event, 'tt13', 'link13')" onMouseOut="HideTip('tt13')">clear</a></td><td class=SDescription>Remove all the elements from the root</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.setExtent" id=link14 onMouseOver="ShowTip(event, 'tt14', 'link14')" onMouseOut="HideTip('tt14')">setExtent</a></td><td class=SDescription>Set the visible part of the layer.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.getNodeType" id=link15 onMouseOver="ShowTip(event, 'tt15', 'link15')" onMouseOut="HideTip('tt15')">getNodeType</a></td><td class=SDescription>This function is in charge of asking the specific renderer which type of node to create for the given geometry and style. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawGeometry" id=link16 onMouseOver="ShowTip(event, 'tt16', 'link16')" onMouseOut="HideTip('tt16')">drawGeometry</a></td><td class=SDescription>Draw the geometry, creating new nodes, setting paths, setting style, setting featureId on the node. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.redrawNode" id=link17 onMouseOver="ShowTip(event, 'tt17', 'link17')" onMouseOut="HideTip('tt17')">redrawNode</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.redrawBackgroundNode" id=link18 onMouseOver="ShowTip(event, 'tt18', 'link18')" onMouseOut="HideTip('tt18')">redrawBackgroundNode</a></td><td class=SDescription>Redraws the node using special ‘background’ style properties. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawGeometryNode" id=link19 onMouseOver="ShowTip(event, 'tt19', 'link19')" onMouseOut="HideTip('tt19')">drawGeometryNode</a></td><td class=SDescription>Given a node, draw a geometry on the specified layer. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.postDraw" id=link20 onMouseOver="ShowTip(event, 'tt20', 'link20')" onMouseOut="HideTip('tt20')">postDraw</a></td><td class=SDescription>Things that have do be done after the geometry node is appended to its parent node. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawPoint" id=link21 onMouseOver="ShowTip(event, 'tt21', 'link21')" onMouseOut="HideTip('tt21')">drawPoint</a></td><td class=SDescription>Virtual function for drawing Point Geometry. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawLineString" id=link22 onMouseOver="ShowTip(event, 'tt22', 'link22')" onMouseOut="HideTip('tt22')">drawLineString</a></td><td class=SDescription>Virtual function for drawing LineString Geometry. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawLinearRing" id=link23 onMouseOver="ShowTip(event, 'tt23', 'link23')" onMouseOut="HideTip('tt23')">drawLinearRing</a></td><td class=SDescription>Virtual function for drawing LinearRing Geometry. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawPolygon" id=link24 onMouseOver="ShowTip(event, 'tt24', 'link24')" onMouseOut="HideTip('tt24')">drawPolygon</a></td><td class=SDescription>Virtual function for drawing Polygon Geometry. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawRectangle" id=link25 onMouseOver="ShowTip(event, 'tt25', 'link25')" onMouseOut="HideTip('tt25')">drawRectangle</a></td><td class=SDescription>Virtual function for drawing Rectangle Geometry. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawCircle" id=link26 onMouseOver="ShowTip(event, 'tt26', 'link26')" onMouseOut="HideTip('tt26')">drawCircle</a></td><td class=SDescription>Virtual function for drawing Circle Geometry. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.removeText" id=link27 onMouseOver="ShowTip(event, 'tt27', 'link27')" onMouseOut="HideTip('tt27')">removeText</a></td><td class=SDescription>Removes a label</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.getFeatureIdFromEvent" id=link28 onMouseOver="ShowTip(event, 'tt28', 'link28')" onMouseOut="HideTip('tt28')">getFeatureIdFromEvent</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.eraseGeometry" id=link29 onMouseOver="ShowTip(event, 'tt29', 'link29')" onMouseOut="HideTip('tt29')">eraseGeometry</a></td><td class=SDescription>Erase a geometry from the renderer. </td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.nodeFactory" id=link30 onMouseOver="ShowTip(event, 'tt30', 'link30')" onMouseOut="HideTip('tt30')">nodeFactory</a></td><td class=SDescription>Create new node of the specified type, with the (optional) specified id.</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.nodeTypeCompare" id=link31 onMouseOver="ShowTip(event, 'tt31', 'link31')" onMouseOut="HideTip('tt31')">nodeTypeCompare</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.createNode" id=link32 onMouseOver="ShowTip(event, 'tt32', 'link32')" onMouseOut="HideTip('tt32')">createNode</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.moveRoot" id=link33 onMouseOver="ShowTip(event, 'tt33', 'link33')" onMouseOut="HideTip('tt33')">moveRoot</a></td><td class=SDescription>moves this renderer’s root to a different renderer.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.getRenderLayerId" id=link34 onMouseOver="ShowTip(event, 'tt34', 'link34')" onMouseOut="HideTip('tt34')">getRenderLayerId</a></td><td class=SDescription>Gets the layer that this renderer’s output appears on. </td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.isComplexSymbol" id=link35 onMouseOver="ShowTip(event, 'tt35', 'link35')" onMouseOut="HideTip('tt35')">isComplexSymbol</a></td><td class=SDescription>Determines if a symbol cannot be rendered using drawCircle</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.Properties"></a>Properties</h3></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.maxZIndex"></a>maxZIndex</h3><div class=CBody><p>{Integer} This is the largest-most z-index value for a node contained within the indexer.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.order"></a>order</h3><div class=CBody><p>{Array<String>} This is an array of node id’s stored in the order that they should show up on screen. Id’s higher up in the array (higher array index) represent nodes with higher z-indeces.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.indices"></a>indices</h3><div class=CBody><p>{Object} This is a hash that maps node ids to their z-index value stored in the indexer. This is done to make finding a nodes z-index value O(1).</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.compare"></a>compare</h3><div class=CBody><p>{Function} This is the function used to determine placement of of a new node within the indexer. If null, this defaults to to the Z_ORDER_DRAWING_ORDER comparison method.</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.initialize"></a>initialize</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>initialize: function(</td><td class="PParameter prettyprint " nowrap>yOrdering</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Create a new indexer with</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>yOrdering</td><td class=CDLDescription>{Boolean} Whether to use y-ordering.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.insert"></a>insert</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>insert: function(</td><td class="PParameter prettyprint " nowrap>newNode</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Insert a new node into the indexer. In order to find the correct positioning for the node to be inserted, this method uses a binary search. This makes inserting O(log(n)).</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>newNode</td><td class=CDLDescription>{DOMElement} The new node to be inserted.</td></tr></table><p>Returns {DOMElement} the node before which we should insert our newNode, or null if newNode can just be appended.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.remove"></a>remove</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>remove: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement} The node to be removed.</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.clear"></a>clear</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">clear: function()</td></tr></table></blockquote></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.exists"></a>exists</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>exists: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement} The node to test for existence.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} Whether or not the node exists in the indexer?</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.getZIndex"></a>getZIndex</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>getZIndex: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Get the z-index value for the current node from the node data itself.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement} The node whose z-index to get.</td></tr></table><h4 class=CHeading>Returns</h4><p>{Integer} The z-index value for the specified node (from the node data itself).</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.determineZIndex"></a>determineZIndex</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>determineZIndex: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Determine the z-index for the current node if there isn’t one, and set the maximum value if we’ve found a new maximum.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.getNextElement"></a>getNextElement</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>getNextElement: function(</td><td class="PParameter prettyprint " nowrap>index</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Get the next element in the order stack.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>index</td><td class=CDLDescription>{Integer} The index of the current node in this.order.</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} the node following the index passed in, or null.</p></div></div></div>
<div class="CClass"><div class=CTopic><h2 class=CTitle><a name="OpenLayers.ElementsIndexer.IndexingMethods"></a>OpenLayers.<wbr>ElementsIndexer.<wbr>IndexingMethods</h2><div class=CBody><p>These are the compare methods for figuring out where a new node should be placed within the indexer. These methods are very similar to general sorting methods in that they return -1, 0, and 1 to specify the direction in which new nodes fall in the ordering.</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="SGroup"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER" id=link36 onMouseOver="ShowTip(event, 'tt9', 'link36')" onMouseOut="HideTip('tt9')">Z_ORDER</a></td><td class=SDescription>This compare method is used by other comparison methods. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER_DRAWING_ORDER" id=link37 onMouseOver="ShowTip(event, 'tt10', 'link37')" onMouseOut="HideTip('tt10')">Z_ORDER_DRAWING_ORDER</a></td><td class=SDescription>This method orders nodes by their z-index, but does so in a way that, if there are other nodes with the same z-index, the newest drawn will be the front most within that z-index. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER_Y_ORDER" id=link38 onMouseOver="ShowTip(event, 'tt11', 'link38')" onMouseOut="HideTip('tt11')">Z_ORDER_Y_ORDER</a></td><td class=SDescription>This one should really be called Z_ORDER_Y_ORDER_DRAWING_ORDER, as it best describes which ordering methods have precedence (though, the name would be too long). </td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.IndexingMethods.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER"></a>Z_ORDER</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>Z_ORDER: function(</td><td class="PParameter prettyprint " nowrap>indexer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>newNode,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>nextNode</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>This compare method is used by other comparison methods. It can be used individually for ordering, but is not recommended, because it doesn’t subscribe to drawing order.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>indexer</td><td class=CDLDescription>{<a href="#OpenLayers.ElementsIndexer" class=LClass id=link39 onMouseOver="ShowTip(event, 'tt36', 'link39')" onMouseOut="HideTip('tt36')">OpenLayers.ElementsIndexer</a>}</td></tr><tr><td class=CDLEntry>newNode</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>nextNode</td><td class=CDLDescription>{DOMElement}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Integer}</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER_DRAWING_ORDER"></a>Z_ORDER_DRAWING_ORDER</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>Z_ORDER_DRAWING_ORDER: function(</td><td class="PParameter prettyprint " nowrap>indexer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>newNode,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>nextNode</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>This method orders nodes by their z-index, but does so in a way that, if there are other nodes with the same z-index, the newest drawn will be the front most within that z-index. This is the default indexing method.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>indexer</td><td class=CDLDescription>{<a href="#OpenLayers.ElementsIndexer" class=LClass id=link40 onMouseOver="ShowTip(event, 'tt36', 'link40')" onMouseOut="HideTip('tt36')">OpenLayers.ElementsIndexer</a>}</td></tr><tr><td class=CDLEntry>newNode</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>nextNode</td><td class=CDLDescription>{DOMElement}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Integer}</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.ElementsIndexer.IndexingMethods.Z_ORDER_Y_ORDER"></a>Z_ORDER_Y_ORDER</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>Z_ORDER_Y_ORDER: function(</td><td class="PParameter prettyprint " nowrap>indexer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>newNode,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>nextNode</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>This one should really be called Z_ORDER_Y_ORDER_DRAWING_ORDER, as it best describes which ordering methods have precedence (though, the name would be too long). This method orders nodes by their z-index, but does so in a way that, if there are other nodes with the same z-index, the nodes with the lower y position will be “closer” than those with a higher y position. If two nodes have the exact same y position, however, then this method will revert to using drawing order to decide placement.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>indexer</td><td class=CDLDescription>{<a href="#OpenLayers.ElementsIndexer" class=LClass id=link41 onMouseOver="ShowTip(event, 'tt36', 'link41')" onMouseOut="HideTip('tt36')">OpenLayers.ElementsIndexer</a>}</td></tr><tr><td class=CDLEntry>newNode</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>nextNode</td><td class=CDLDescription>{DOMElement}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Integer}</p></div></div></div>
<div class="CClass"><div class=CTopic><h2 class=CTitle><a name="OpenLayers.Renderer.Elements"></a>OpenLayers.<wbr>Renderer.<wbr>Elements</h2><div class=CBody><p>This is another virtual class in that it should never be instantiated by itself as a Renderer. It exists because there is <b>tons</b> of shared functionality between different vector libraries which use nodes/elements as a base for rendering vectors.</p><p>The highlevel bits of code that are implemented here are the adding and removing of geometries, which is essentially the same for any element-based renderer. The details of creating each node and drawing the paths are of course different, but the machinery is the same.</p><h4 class=CHeading>Inherits</h4><ul><li><a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link66 onMouseOver="ShowTip(event, 'tt37', 'link66')" onMouseOut="HideTip('tt37')">OpenLayers.Renderer</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="SGroup"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.rendererRoot" >rendererRoot</a></td><td class=SDescription>{DOMElement}</td></tr><tr class="SProperty SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.root" >root</a></td><td class=SDescription>{DOMElement}</td></tr><tr class="SProperty SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.vectorRoot" >vectorRoot</a></td><td class=SDescription>{DOMElement}</td></tr><tr class="SProperty SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.textRoot" >textRoot</a></td><td class=SDescription>{DOMElement}</td></tr><tr class="SProperty SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.xmlns" >xmlns</a></td><td class=SDescription>{String}</td></tr><tr class="SProperty SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.xOffset" >xOffset</a></td><td class=SDescription>{Number} Offset to apply to the renderer viewport translation in x direction. </td></tr><tr class="SProperty SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.rightOfDateLine" >rightOfDateLine</a></td><td class=SDescription>{Boolean} Keeps track of the location of the map extent relative to the date line. </td></tr><tr class="SProperty SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Indexer" >Indexer</a></td><td class=SDescription>{<OpenLayers.ElementIndexer>} An instance of OpenLayers.ElementsIndexer created upon initialization if the zIndexing or yOrdering options passed to this renderer’s constructor are set to true.</td></tr><tr class="SGroup"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Constants" >Constants</a></td><td class=SDescription></td></tr><tr class="SConstant SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.BACKGROUND_ID_SUFFIX" >BACKGROUND_ID_SUFFIX</a></td><td class=SDescription>{String}</td></tr><tr class="SConstant SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.LABEL_ID_SUFFIX" >LABEL_ID_SUFFIX</a></td><td class=SDescription>{String}</td></tr><tr class="SConstant SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.LABEL_OUTLINE_SUFFIX" >LABEL_OUTLINE_SUFFIX</a></td><td class=SDescription>{String}</td></tr><tr class="SGroup"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.OpenLayers.Renderer.Elements" >OpenLayers.<wbr>Renderer.<wbr>Elements</a></td><td class=SDescription></td></tr><tr class="SGroup"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.destroy" id=link42 onMouseOver="ShowTip(event, 'tt12', 'link42')" onMouseOut="HideTip('tt12')">destroy</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.clear" id=link43 onMouseOver="ShowTip(event, 'tt13', 'link43')" onMouseOut="HideTip('tt13')">clear</a></td><td class=SDescription>Remove all the elements from the root</td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.setExtent" id=link44 onMouseOver="ShowTip(event, 'tt14', 'link44')" onMouseOut="HideTip('tt14')">setExtent</a></td><td class=SDescription>Set the visible part of the layer.</td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.getNodeType" id=link45 onMouseOver="ShowTip(event, 'tt15', 'link45')" onMouseOut="HideTip('tt15')">getNodeType</a></td><td class=SDescription>This function is in charge of asking the specific renderer which type of node to create for the given geometry and style. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawGeometry" id=link46 onMouseOver="ShowTip(event, 'tt16', 'link46')" onMouseOut="HideTip('tt16')">drawGeometry</a></td><td class=SDescription>Draw the geometry, creating new nodes, setting paths, setting style, setting featureId on the node. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.redrawNode" id=link47 onMouseOver="ShowTip(event, 'tt17', 'link47')" onMouseOut="HideTip('tt17')">redrawNode</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.redrawBackgroundNode" id=link48 onMouseOver="ShowTip(event, 'tt18', 'link48')" onMouseOut="HideTip('tt18')">redrawBackgroundNode</a></td><td class=SDescription>Redraws the node using special ‘background’ style properties. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawGeometryNode" id=link49 onMouseOver="ShowTip(event, 'tt19', 'link49')" onMouseOut="HideTip('tt19')">drawGeometryNode</a></td><td class=SDescription>Given a node, draw a geometry on the specified layer. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.postDraw" id=link50 onMouseOver="ShowTip(event, 'tt20', 'link50')" onMouseOut="HideTip('tt20')">postDraw</a></td><td class=SDescription>Things that have do be done after the geometry node is appended to its parent node. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawPoint" id=link51 onMouseOver="ShowTip(event, 'tt21', 'link51')" onMouseOut="HideTip('tt21')">drawPoint</a></td><td class=SDescription>Virtual function for drawing Point Geometry. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawLineString" id=link52 onMouseOver="ShowTip(event, 'tt22', 'link52')" onMouseOut="HideTip('tt22')">drawLineString</a></td><td class=SDescription>Virtual function for drawing LineString Geometry. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawLinearRing" id=link53 onMouseOver="ShowTip(event, 'tt23', 'link53')" onMouseOut="HideTip('tt23')">drawLinearRing</a></td><td class=SDescription>Virtual function for drawing LinearRing Geometry. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawPolygon" id=link54 onMouseOver="ShowTip(event, 'tt24', 'link54')" onMouseOut="HideTip('tt24')">drawPolygon</a></td><td class=SDescription>Virtual function for drawing Polygon Geometry. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawRectangle" id=link55 onMouseOver="ShowTip(event, 'tt25', 'link55')" onMouseOut="HideTip('tt25')">drawRectangle</a></td><td class=SDescription>Virtual function for drawing Rectangle Geometry. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.drawCircle" id=link56 onMouseOver="ShowTip(event, 'tt26', 'link56')" onMouseOut="HideTip('tt26')">drawCircle</a></td><td class=SDescription>Virtual function for drawing Circle Geometry. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.removeText" id=link57 onMouseOver="ShowTip(event, 'tt27', 'link57')" onMouseOut="HideTip('tt27')">removeText</a></td><td class=SDescription>Removes a label</td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.getFeatureIdFromEvent" id=link58 onMouseOver="ShowTip(event, 'tt28', 'link58')" onMouseOut="HideTip('tt28')">getFeatureIdFromEvent</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.eraseGeometry" id=link59 onMouseOver="ShowTip(event, 'tt29', 'link59')" onMouseOut="HideTip('tt29')">eraseGeometry</a></td><td class=SDescription>Erase a geometry from the renderer. </td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.nodeFactory" id=link60 onMouseOver="ShowTip(event, 'tt30', 'link60')" onMouseOut="HideTip('tt30')">nodeFactory</a></td><td class=SDescription>Create new node of the specified type, with the (optional) specified id.</td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.nodeTypeCompare" id=link61 onMouseOver="ShowTip(event, 'tt31', 'link61')" onMouseOut="HideTip('tt31')">nodeTypeCompare</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.createNode" id=link62 onMouseOver="ShowTip(event, 'tt32', 'link62')" onMouseOut="HideTip('tt32')">createNode</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.moveRoot" id=link63 onMouseOver="ShowTip(event, 'tt33', 'link63')" onMouseOut="HideTip('tt33')">moveRoot</a></td><td class=SDescription>moves this renderer’s root to a different renderer.</td></tr><tr class="SFunction SIndent1 SMarked"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.getRenderLayerId" id=link64 onMouseOver="ShowTip(event, 'tt34', 'link64')" onMouseOut="HideTip('tt34')">getRenderLayerId</a></td><td class=SDescription>Gets the layer that this renderer’s output appears on. </td></tr><tr class="SFunction SIndent1"><td class=SEntry><a href="#OpenLayers.Renderer.Elements.isComplexSymbol" id=link65 onMouseOver="ShowTip(event, 'tt35', 'link65')" onMouseOut="HideTip('tt35')">isComplexSymbol</a></td><td class=SDescription>Determines if a symbol cannot be rendered using drawCircle</td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.Properties"></a>Properties</h3></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.rendererRoot"></a>rendererRoot</h3><div class=CBody><p>{DOMElement}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.root"></a>root</h3><div class=CBody><p>{DOMElement}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.vectorRoot"></a>vectorRoot</h3><div class=CBody><p>{DOMElement}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.textRoot"></a>textRoot</h3><div class=CBody><p>{DOMElement}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.xmlns"></a>xmlns</h3><div class=CBody><p>{String}</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.xOffset"></a>xOffset</h3><div class=CBody><p>{Number} Offset to apply to the renderer viewport translation in x direction. If the renderer extent’s center is on the right of the dateline (i.e. exceeds the world bounds), we shift the viewport to the left by one world width. This avoids that features disappear from the map viewport. Because our dateline handling logic in other places ensures that extents crossing the dateline always have a center exceeding the world bounds on the left, we need this offset to make sure that the same is true for the renderer extent in pixel space as well.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.rightOfDateLine"></a>rightOfDateLine</h3><div class=CBody><p>{Boolean} Keeps track of the location of the map extent relative to the date line. The <a href="#OpenLayers.Renderer.Elements.setExtent" class=LFunction id=link67 onMouseOver="ShowTip(event, 'tt14', 'link67')" onMouseOut="HideTip('tt14')">setExtent</a> method compares this value (which is the one from the previous <a href="#OpenLayers.Renderer.Elements.setExtent" class=LFunction id=link68 onMouseOver="ShowTip(event, 'tt14', 'link68')" onMouseOut="HideTip('tt14')">setExtent</a> call) with the current position of the map extent relative to the date line and updates the xOffset when the extent has moved from one side of the date line to the other.</p></div></div></div>
<div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.Indexer"></a>Indexer</h3><div class=CBody><p>{<OpenLayers.ElementIndexer>} An instance of OpenLayers.ElementsIndexer created upon initialization if the zIndexing or yOrdering options passed to this renderer’s constructor are set to true.</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.Constants"></a>Constants</h3></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.BACKGROUND_ID_SUFFIX"></a>BACKGROUND_ID_SUFFIX</h3><div class=CBody><p>{String}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.LABEL_ID_SUFFIX"></a>LABEL_ID_SUFFIX</h3><div class=CBody><p>{String}</p></div></div></div>
<div class="CConstant"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.LABEL_OUTLINE_SUFFIX"></a>LABEL_OUTLINE_SUFFIX</h3><div class=CBody><p>{String}</p></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.Constructor"></a>Constructor</h3></div></div>
<div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.OpenLayers.Renderer.Elements"></a>OpenLayers.<wbr>Renderer.<wbr>Elements</h3><div class=CBody><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>containerID</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} options for this renderer.</td></tr></table><h4 class=CHeading>Supported options are</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>yOrdering</td><td class=CDLDescription>{Boolean} Whether to use y-ordering</td></tr><tr><td class=CDLEntry>zIndexing</td><td class=CDLDescription>{Boolean} Whether to use z-indexing. Will be ignored if yOrdering is set to true.</td></tr></table></div></div></div>
<div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.Functions"></a>Functions</h3></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.destroy"></a>destroy</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function()</td></tr></table></blockquote></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.clear"></a>clear</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">clear: function()</td></tr></table></blockquote><p>Remove all the elements from the root</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.setExtent"></a>setExtent</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>setExtent: function(</td><td class="PParameter prettyprint " nowrap>extent,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>resolutionChanged</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Set the visible part of the layer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>extent</td><td class=CDLDescription>{<a href="../BaseTypes/Bounds-js.html#OpenLayers.Bounds" class=LClass id=link69 onMouseOver="ShowTip(event, 'tt38', 'link69')" onMouseOut="HideTip('tt38')">OpenLayers.Bounds</a>}</td></tr><tr><td class=CDLEntry>resolutionChanged</td><td class=CDLDescription>{Boolean}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} true to notify the layer that the new extent does not exceed the coordinate range, and the features will not need to be redrawn. False otherwise.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.getNodeType"></a>getNodeType</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>getNodeType: function(</td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>This function is in charge of asking the specific renderer which type of node to create for the given geometry and style. All geometries in an Elements-based renderer consist of one node and some attributes. We have the nodeFactory() function which creates a node for us, but it takes a ‘type’ as input, and that is precisely what this function tells us.</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=link70 onMouseOver="ShowTip(event, 'tt39', 'link70')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr><tr><td class=CDLEntry>style</td><td class=CDLDescription>{Object}</td></tr></table><h4 class=CHeading>Returns</h4><p>{String} The corresponding node type for the specified geometry</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.drawGeometry"></a>drawGeometry</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>drawGeometry: function(</td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Draw the geometry, creating new nodes, setting paths, setting style, setting featureId on the node. This method should only be called by the renderer itself.</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=link71 onMouseOver="ShowTip(event, 'tt39', 'link71')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr><tr><td class=CDLEntry>style</td><td class=CDLDescription>{Object}</td></tr><tr><td class=CDLEntry>featureId</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} true if the geometry has been drawn completely; null if incomplete; false otherwise</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.redrawNode"></a>redrawNode</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>redrawNode: function(</td><td class="PParameter prettyprint " nowrap>id,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link72 onMouseOver="ShowTip(event, 'tt39', 'link72')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr><tr><td class=CDLEntry>style</td><td class=CDLDescription>{Object}</td></tr><tr><td class=CDLEntry>featureId</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} true if the complete geometry could be drawn, null if parts of the geometry could not be drawn, false otherwise</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.redrawBackgroundNode"></a>redrawBackgroundNode</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>redrawBackgroundNode: function(</td><td class="PParameter prettyprint " nowrap>id,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Redraws the node using special ‘background’ style properties. Basically just calls redrawNode(), but instead of directly using the ‘externalGraphic’, ‘graphicXOffset’, ‘graphicYOffset’, and ‘graphicZIndex’ properties directly from the specified ‘style’ parameter, we create a new style object and set those properties from the corresponding ‘background’-prefixed properties from specified ‘style’ parameter.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link73 onMouseOver="ShowTip(event, 'tt39', 'link73')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr><tr><td class=CDLEntry>style</td><td class=CDLDescription>{Object}</td></tr><tr><td class=CDLEntry>featureId</td><td class=CDLDescription>{String}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} true if the complete geometry could be drawn, null if parts of the geometry could not be drawn, false otherwise</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.drawGeometryNode"></a>drawGeometryNode</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>drawGeometryNode: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Given a node, draw a geometry on the specified layer. node and geometry are required arguments, style is optional. This method is only called by the render itself.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link74 onMouseOver="ShowTip(event, 'tt39', 'link74')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr><tr><td class=CDLEntry>style</td><td class=CDLDescription>{Object}</td></tr></table><h4 class=CHeading>Returns</h4><p>{Object} a hash with properties “node” (the drawn node) and “complete” (null if parts of the geometry could not be drawn, false if nothing could be drawn)</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.postDraw"></a>postDraw</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>postDraw: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Things that have do be done after the geometry node is appended to its parent node. To be overridden by subclasses.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.drawPoint"></a>drawPoint</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>drawPoint: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Virtual function for drawing Point Geometry. Should be implemented by subclasses. This method is only called by the renderer itself.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link75 onMouseOver="ShowTip(event, 'tt39', 'link75')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} or false if the renderer could not draw the point</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.drawLineString"></a>drawLineString</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>drawLineString: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Virtual function for drawing LineString Geometry. Should be implemented by subclasses. This method is only called by the renderer itself.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link76 onMouseOver="ShowTip(event, 'tt39', 'link76')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} or null if the renderer could not draw all components of the linestring, or false if nothing could be drawn</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.drawLinearRing"></a>drawLinearRing</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>drawLinearRing: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Virtual function for drawing LinearRing Geometry. Should be implemented by subclasses. This method is only called by the renderer itself.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link77 onMouseOver="ShowTip(event, 'tt39', 'link77')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} or null if the renderer could not draw all components of the linear ring, or false if nothing could be drawn</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.drawPolygon"></a>drawPolygon</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>drawPolygon: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Virtual function for drawing Polygon Geometry. Should be implemented by subclasses. This method is only called by the renderer itself.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link78 onMouseOver="ShowTip(event, 'tt39', 'link78')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} or null if the renderer could not draw all components of the polygon, or false if nothing could be drawn</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.drawRectangle"></a>drawRectangle</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>drawRectangle: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Virtual function for drawing Rectangle Geometry. Should be implemented by subclasses. This method is only called by the renderer itself.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link79 onMouseOver="ShowTip(event, 'tt39', 'link79')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} or false if the renderer could not draw the rectangle</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.drawCircle"></a>drawCircle</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>drawCircle: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Virtual function for drawing Circle Geometry. Should be implemented by subclasses. This method is only called by the renderer itself.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>geometry</td><td class=CDLDescription>{<a href="../Geometry-js.html#OpenLayers.Geometry" class=LClass id=link80 onMouseOver="ShowTip(event, 'tt39', 'link80')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} or false if the renderer could not draw the circle</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.removeText"></a>removeText</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>removeText: function(</td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Removes a label</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>featureId</td><td class=CDLDescription>{String}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.getFeatureIdFromEvent"></a>getFeatureIdFromEvent</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>getFeatureIdFromEvent: function(</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Object} An <a href="../Events-js.html#OpenLayers.Event" class=LClass id=link81 onMouseOver="ShowTip(event, 'tt40', 'link81')" onMouseOut="HideTip('tt40')">OpenLayers.Event</a> object</td></tr></table><h4 class=CHeading>Returns</h4><p>{String} A feature id or undefined.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.eraseGeometry"></a>eraseGeometry</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>eraseGeometry: function(</td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Erase a geometry from the renderer. In the case of a multi-geometry, we cycle through and recurse on ourselves. Otherwise, we look for a node with the geometry.id, destroy its geometry, and remove it from the DOM.</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=link82 onMouseOver="ShowTip(event, 'tt39', 'link82')" onMouseOut="HideTip('tt39')">OpenLayers.Geometry</a>}</td></tr><tr><td class=CDLEntry>featureId</td><td class=CDLDescription>{String}</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.nodeFactory"></a>nodeFactory</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>nodeFactory: function(</td><td class="PParameter prettyprint " nowrap>id,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Create new node of the specified type, with the (optional) specified id.</p><p>If node already exists with same ID and a different type, we remove it and then call ourselves again to recreate it.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String}</td></tr><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} type Kind of node to draw.</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} A new node of the given type and id.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.nodeTypeCompare"></a>nodeTypeCompare</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>nodeTypeCompare: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>node</td><td class=CDLDescription>{DOMElement}</td></tr><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} Kind of node</td></tr></table><h4 class=CHeading>Returns</h4><p>{Boolean} Whether or not the specified node is of the specified type This function must be overridden by subclasses.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.createNode"></a>createNode</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>createNode: function(</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>id</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>type</td><td class=CDLDescription>{String} Kind of node to draw.</td></tr><tr><td class=CDLEntry>id</td><td class=CDLDescription>{String} Id for node.</td></tr></table><h4 class=CHeading>Returns</h4><p>{DOMElement} A new node of the given type and id. This function must be overridden by subclasses.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.moveRoot"></a>moveRoot</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>moveRoot: function(</td><td class="PParameter prettyprint " nowrap>renderer</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>moves this renderer’s root to a different renderer.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>renderer</td><td class=CDLDescription>{<a href="../Renderer-js.html#OpenLayers.Renderer" class=LClass id=link83 onMouseOver="ShowTip(event, 'tt37', 'link83')" onMouseOut="HideTip('tt37')">OpenLayers.Renderer</a>} target renderer for the moved root</td></tr></table></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.getRenderLayerId"></a>getRenderLayerId</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getRenderLayerId: function()</td></tr></table></blockquote><p>Gets the layer that this renderer’s output appears on. If moveRoot was used, this will be different from the id of the layer containing the features rendered by this renderer.</p><h4 class=CHeading>Returns</h4><p>{String} the id of the output layer.</p></div></div></div>
<div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Renderer.Elements.isComplexSymbol"></a>isComplexSymbol</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>isComplexSymbol: function(</td><td class="PParameter prettyprint " nowrap>graphicName</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote><p>Determines if a symbol cannot be rendered using drawCircle</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>graphicName</td><td class=CDLDescription>{String}</td></tr></table><p>Returns {Boolean} true if the symbol is complex, false if not</p></div></div></div>
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<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>initialize: function(</td><td class="PParameter prettyprint " nowrap>yOrdering</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Create a new indexer with</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>insert: function(</td><td class="PParameter prettyprint " nowrap>newNode</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Insert a new node into the indexer. </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>remove: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt4"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">clear: function()</td></tr></table></blockquote></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>exists: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></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>getZIndex: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Get the z-index value for the current node from the node data itself.</div></div><div class=CToolTip id="tt7"><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>determineZIndex: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Determine the z-index for the current node if there isn’t one, and set the maximum value if we’ve found a new maximum.</div></div><div class=CToolTip id="tt8"><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>getNextElement: function(</td><td class="PParameter prettyprint " nowrap>index</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Get the next element in the order stack.</div></div><div class=CToolTip id="tt9"><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>Z_ORDER: function(</td><td class="PParameter prettyprint " nowrap>indexer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>newNode,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>nextNode</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>This compare method is used by other comparison methods. </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>Z_ORDER_DRAWING_ORDER: function(</td><td class="PParameter prettyprint " nowrap>indexer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>newNode,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>nextNode</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>This method orders nodes by their z-index, but does so in a way that, if there are other nodes with the same z-index, the newest drawn will be the front most within that z-index. </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>Z_ORDER_Y_ORDER: function(</td><td class="PParameter prettyprint " nowrap>indexer,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>newNode,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>nextNode</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>This one should really be called Z_ORDER_Y_ORDER_DRAWING_ORDER, as it best describes which ordering methods have precedence (though, the name would be too long). </div></div><div class=CToolTip id="tt12"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">destroy: function()</td></tr></table></blockquote></div></div><div class=CToolTip id="tt13"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">clear: function()</td></tr></table></blockquote>Remove all the elements from the root</div></div><div class=CToolTip id="tt14"><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>setExtent: function(</td><td class="PParameter prettyprint " nowrap>extent,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>resolutionChanged</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Set the visible part of the layer.</div></div><div class=CToolTip id="tt15"><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>getNodeType: function(</td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>This function is in charge of asking the specific renderer which type of node to create for the given geometry and style. </div></div><div class=CToolTip id="tt16"><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>drawGeometry: function(</td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Draw the geometry, creating new nodes, setting paths, setting style, setting featureId on the node. </div></div><div class=CToolTip id="tt17"><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>redrawNode: function(</td><td class="PParameter prettyprint " nowrap>id,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt18"><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>redrawBackgroundNode: function(</td><td class="PParameter prettyprint " nowrap>id,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Redraws the node using special ‘background’ style properties. </div></div><div class=CToolTip id="tt19"><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>drawGeometryNode: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>style</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Given a node, draw a geometry on the specified layer. </div></div><div class=CToolTip id="tt20"><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>postDraw: function(</td><td class="PParameter prettyprint " nowrap>node</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Things that have do be done after the geometry node is appended to its parent node. </div></div><div class=CToolTip id="tt21"><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>drawPoint: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Virtual function for drawing Point Geometry. </div></div><div class=CToolTip id="tt22"><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>drawLineString: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Virtual function for drawing LineString Geometry. </div></div><div class=CToolTip id="tt23"><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>drawLinearRing: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Virtual function for drawing LinearRing Geometry. </div></div><div class=CToolTip id="tt24"><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>drawPolygon: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Virtual function for drawing Polygon Geometry. </div></div><div class=CToolTip id="tt25"><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>drawRectangle: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Virtual function for drawing Rectangle Geometry. </div></div><div class=CToolTip id="tt26"><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>drawCircle: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>geometry</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Virtual function for drawing Circle Geometry. </div></div><div class=CToolTip id="tt27"><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>removeText: function(</td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Removes a label</div></div><div class=CToolTip id="tt28"><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>getFeatureIdFromEvent: function(</td><td class="PParameter prettyprint " nowrap>evt</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt29"><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>eraseGeometry: function(</td><td class="PParameter prettyprint " nowrap>geometry,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>featureId</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Erase a geometry from the renderer. </div></div><div class=CToolTip id="tt30"><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>nodeFactory: function(</td><td class="PParameter prettyprint " nowrap>id,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Create new node of the specified type, with the (optional) specified id.</div></div><div class=CToolTip id="tt31"><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>nodeTypeCompare: function(</td><td class="PParameter prettyprint " nowrap>node,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>type</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt32"><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>createNode: function(</td><td class="PParameter prettyprint " nowrap>type,</td></tr><tr><td></td><td class="PParameter prettyprint " nowrap>id</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote></div></div><div class=CToolTip id="tt33"><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>moveRoot: function(</td><td class="PParameter prettyprint " nowrap>renderer</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>moves this renderer’s root to a different renderer.</div></div><div class=CToolTip id="tt34"><div class=CFunction><blockquote><table border=0 cellspacing=0 cellpadding=0 class="Prototype"><tr><td class="prettyprint">getRenderLayerId: function()</td></tr></table></blockquote>Gets the layer that this renderer’s output appears on. </div></div><div class=CToolTip id="tt35"><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>isComplexSymbol: function(</td><td class="PParameter prettyprint " nowrap>graphicName</td><td class="PAfterParameters prettyprint "nowrap>)</td></tr></table></td></tr></table></blockquote>Determines if a symbol cannot be rendered using drawCircle</div></div><div class=CToolTip id="tt36"><div class=CClass>This class takes care of figuring out which order elements should be placed in the DOM based on given indexing methods.</div></div><div class=CToolTip id="tt37"><div class=CClass>This is the base class for all renderers.</div></div><div class=CToolTip id="tt38"><div class=CClass>Instances of this class represent bounding boxes. </div></div><div class=CToolTip id="tt39"><div class=CClass>A Geometry is a description of a geographic object. </div></div><div class=CToolTip id="tt40"><div class=CClass>Utility functions for event handling.</div></div><!--END_ND_TOOLTIPS-->
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