在GeoServer中应用SLD表现伪3D建筑

在GeoServer中使用SLD表现伪3D建筑
原文链接：pseudo-3D buildings in Geoserver
Pseudo-3D or 2.5D or 3/4 perspective can be done in Geoserver using isometric function.

<FeatureTypeStyle>  <Rule>    <PolygonSymbolizer>      <Geometry>        <ogc:Function name="isometric">          <ogc:PropertyName>geom</ogc:PropertyName>          <ogc:Literal>7</ogc:Literal>        </ogc:Function>      </Geometry>      <Fill>        <CssParameter name="fill">#dddddd</CssParameter>      </Fill>      <Stroke>        <CssParameter name="stroke">#999999</CssParameter>      </Stroke>    </PolygonSymbolizer>  </Rule></FeatureTypeStyle>

<FeatureTypeStyle>  <Rule>    <PolygonSymbolizer>      <Geometry>         <ogc:Function name="offset">            <ogc:PropertyName>geom</ogc:PropertyName>            <ogc:Literal>0</ogc:Literal>            <ogc:Literal>7</ogc:Literal>         </ogc:Function>      </Geometry>      <Fill>        <CssParameter name="fill">#FFDCC7</CssParameter>      </Fill>      <Stroke>        <CssParameter name="stroke">#999999</CssParameter>      </Stroke>    </PolygonSymbolizer>  </Rule></FeatureTypeStyle>

<?xml version="1.0" encoding="ISO-8859-1"?><StyledLayerDescriptor version="1.0.0"     xsi:schemaLocation="http://www.opengis.net/sld StyledLayerDescriptor.xsd"     xmlns="http://www.opengis.net/sld"     xmlns:ogc="http://www.opengis.net/ogc"     xmlns:xlink="http://www.w3.org/1999/xlink"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">    <!-- a Named Layer is the basic building block of an SLD document -->    <NamedLayer>        <Name>default_polygon</Name>        <UserStyle>            <!-- Styles can have names, titles and abstracts -->            <Title>Default Polygon</Title>            <Abstract>A sample style that draws a polygon</Abstract>            <!-- FeatureTypeStyles describe how to render different features -->            <!-- A FeatureTypeStyle for rendering polygons -->            <FeatureTypeStyle>                <Rule>                    <PolygonSymbolizer>                        <Geometry>                            <ogc:Function name="isometric">                                <ogc:PropertyName>the_geom</ogc:PropertyName>                                <ogc:Literal>5</ogc:Literal>                            </ogc:Function>                        </Geometry>                        <Fill>                            <CssParameter name="fill">#dddddd</CssParameter>                        </Fill>                        <Stroke>                            <CssParameter name="stroke">#999999</CssParameter>                            <CssParameter name="stroke-width">0.1</CssParameter>                        </Stroke>                    </PolygonSymbolizer>                </Rule>            </FeatureTypeStyle>            <FeatureTypeStyle>                <Rule>                    <PolygonSymbolizer>                        <Geometry>                            <ogc:Function name="offset">                                <ogc:PropertyName>the_geom</ogc:PropertyName>                                <ogc:Literal>0</ogc:Literal>                                <ogc:Literal>5</ogc:Literal>                            </ogc:Function>                        </Geometry>                        <Fill>                            <CssParameter name="fill">#cccccc</CssParameter>                        </Fill>                        <Stroke>                            <CssParameter name="stroke">#999999</CssParameter>                            <CssParameter name="stroke-width">0.1</CssParameter>                        </Stroke>                    </PolygonSymbolizer>                </Rule>            </FeatureTypeStyle>        </UserStyle>    </NamedLayer></StyledLayerDescriptor>