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<?xml version="1.0" encoding="UTF-8"?>
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<!-- CityGML Version No. 0.3.0, May 31th, 2006-->
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<!-- CityGML - GML3 application schema for the 3D city model of the Special Interest Group 3D (SIG 3D) of GDI NRW-->
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<!-- Editors: Dr. Gerhard Groeger & Dr. Thomas H. Kolbe, Institute for Cartography and Geoinformation, University of Bonn -->
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<!-- For further information see: www.citygml.org -->
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<!-- For the history of changes and additions to this CityGML schema see file history.txt -->
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<xs:schema targetNamespace="http://www.citygml.org/citygml/1/0/0" xmlns="http://www.citygml.org/citygml/1/0/0" xmlns:xAL="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:gml="http://www.opengis.net/gml" xmlns:xlink="http://www.w3.org/1999/xlink" elementFormDefault="qualified" attributeFormDefault="unqualified">
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    <!--
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	<xs:import namespace="http://www.opengis.net/gml" schemaLocation="3.1.1/base/gml.xsd"/>
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	<xs:import namespace="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0" schemaLocation="xAL/xAL.xsd"/>
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	-->
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	<!-- ========================================================================================= -->
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	<!-- ======================Root Element: CityModel================================================ -->
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	<!-- ========================================================================================= -->
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	<xs:complexType name="CityModelType">
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		<xs:annotation>
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			<xs:documentation>Type describing the "root" element of any city model file. It is a
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				collection whose members are restricted to be features of a city model. All features
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				are included as cityObjectMember.
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			</xs:documentation>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="gml:AbstractFeatureCollectionType">
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				<xs:sequence/>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================= -->
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	<xs:element name="CityModel" type="CityModelType" substitutionGroup="gml:_FeatureCollection"/>
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	<!-- ========================================================================================= -->
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	<!-- =======================================CityModel Members  ================================== -->
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	<!-- ========================================================================================= -->
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	<xs:element name="cityObjectMember" type="gml:FeaturePropertyType" substitutionGroup="gml:featureMember"/>
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	<!-- ========================================================================================= -->
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	<!-- ==================================CityObject: Base Class of all Features========================== -->
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	<!-- ========================================================================================= -->
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	<xs:complexType name="_CityObjectType" abstract="true">
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		<xs:annotation>
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			<xs:documentation>Type describing the abstract superclass of most CityGML features.
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				Its purpose is to provide a creation and a termination date as well as a reference
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				to corresponding objects in other information systems and gerneric attributes.
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				A generalization relation may be used to relate features, which represent the
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				same real-world object in different Levels-of-Detail, i.e. a feature and its generalized
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				counterpart(s). The direction of this relation is from the feature to the corresponding
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				generalized feature.
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			</xs:documentation>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="gml:AbstractFeatureType">
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				<xs:sequence>
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					<xs:element name="creationDate" type="xs:date" minOccurs="0"/>
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					<xs:element name="terminationDate" type="xs:date" minOccurs="0"/>
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					<xs:element name="externalReference" type="ExternalReferenceType" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element ref="_genericAttribute" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="generalizesTo" type="GeneralizationRelationType" minOccurs="0" maxOccurs="unbounded"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================= -->
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	<xs:element name="_CityObject" type="_CityObjectType" abstract="true" substitutionGroup="gml:_Feature"/>
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	<!-- ========================================================================================= -->
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	<xs:complexType name="GeneralizationRelationType">
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		<xs:annotation>
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			<xs:documentation>Denotes the relation of an CityObject to its corresponding CityObject
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				in higher LoD, i.e. to the CityObjects representing the same real world object in
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				higher LoD. </xs:documentation>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:restriction base="gml:AssociationType">
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				<xs:sequence minOccurs="0">
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					<xs:element ref="_CityObject"/>
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				</xs:sequence>
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				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
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			</xs:restriction>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<!-- ========================================================================================== -->
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	<!-- ===========================EXTERNAL REFERENCES (all LoD)=================================== -->
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	<!-- ========================================================================================== -->
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	<xs:complexType name="ExternalReferenceType">
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		<xs:annotation>
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			<xs:documentation>Type describing the reference to an corresponding object in an other
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				information system, for example in the german cadastre ALKIS, the german topographic
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				information system or ATKIS, ot the british OS mastermap. The reference consists of
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				the name of the external information system, represented by an URI, and the
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				reference of the external object, given either by a string or by an URI.
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				If the informationSystem element is missing in the ExternalReference,
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				the ExternalObjectReference must be an URI, which contains an indication
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				of the informationSystem.
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			</xs:documentation>
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		</xs:annotation>
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		<xs:sequence>
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			<xs:element name="informationSystem" type="xs:anyURI" minOccurs="0"/>
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			<xs:element name="externalObject" type="ExternalObjectReferenceType"/>
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		</xs:sequence>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="ExternalObjectReferenceType">
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		<xs:choice>
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			<xs:element name="name" type="xs:string"/>
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			<xs:element name="uri" type="xs:anyURI"/>
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		</xs:choice>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<!-- ========================================================================================= -->
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	<!-- ==================================Generic CityObjects and Attributes=============================-->
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	<!-- ========================================================================================== -->
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	<!-- ========================================================================================== -->
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	<xs:complexType name="_GenericAttributeType" abstract="true">
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		<xs:annotation>
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			<xs:documentation> Generic (user defined) attributes may be used to represent attributes
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				 which are not covered explicitly by the CityGML schema. Generic attributes should be
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				used with care; 	they should only be used if there is no appropiate attribute available in the schema.
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				Oherwise, problems concerning semantic interoperability may arise.
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				 A generic attribute has a name and a value, which has further
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				subclasses (IntAttrribute, StringAttribute, ...).
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			</xs:documentation>
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		</xs:annotation>
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		<xs:sequence/>
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		<xs:attribute name="name" type="xs:string" use="required"/>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="_genericAttribute" type="_GenericAttributeType" abstract="true"/>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="StringAttributeType">
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		<xs:annotation>
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			<xs:documentation/>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_GenericAttributeType">
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				<xs:sequence>
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					<xs:element name="value" type="xs:string"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="stringAttribute" type="StringAttributeType" substitutionGroup="_genericAttribute"/>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="IntAttributeType">
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		<xs:annotation>
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			<xs:documentation/>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_GenericAttributeType">
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				<xs:sequence>
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					<xs:element name="value" type="xs:integer"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="intAttribute" type="IntAttributeType" substitutionGroup="_genericAttribute"/>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="DoubleAttributeType">
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		<xs:annotation>
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			<xs:documentation/>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_GenericAttributeType">
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				<xs:sequence>
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					<xs:element name="value" type="xs:double"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="doubleAttribute" type="DoubleAttributeType" substitutionGroup="_genericAttribute"/>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="DateAttributeType">
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		<xs:annotation>
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			<xs:documentation/>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_GenericAttributeType">
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				<xs:sequence>
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					<xs:element name="value" type="xs:date"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="dateAttribute" type="DateAttributeType" substitutionGroup="_genericAttribute"/>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="UriAttributeType">
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		<xs:annotation>
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			<xs:documentation/>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_GenericAttributeType">
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				<xs:sequence>
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					<xs:element name="value" type="xs:anyURI"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="uriAttribute" type="UriAttributeType" substitutionGroup="_genericAttribute"/>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="GenericCityObjectType">
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		<xs:annotation>
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			<xs:documentation/>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_CityObjectType">
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				<xs:sequence>
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					<xs:element name="class" type="xs:string" minOccurs="0"/>
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					<xs:element name="function" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="usage" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="lod0Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
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					<xs:element name="lod1Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
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					<xs:element name="lod2Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
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					<xs:element name="lod3Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
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					<xs:element name="lod4Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
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					<xs:element name="lod0TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod1TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod2TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod3TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod4TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod0ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
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					<xs:element name="lod1ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
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					<xs:element name="lod2ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
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					<xs:element name="lod3ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
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					<xs:element name="lod4ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="GenericCityObject" type="GenericCityObjectType" substitutionGroup="_CityObject"/>
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	<!-- ========================================================================================== -->
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	<!-- ========================================================================================== -->
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	<!-- =======================================GROUPS============================================ -->
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	<!-- ========================================================================================== -->
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	<!-- ========================================================================================== -->
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	<!-- ========================================================================================== -->
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	<xs:complexType name="CityObjectGroupType">
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		<xs:annotation>
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			<xs:documentation> A group may be used to aggregate arbitrary CityObjects
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				according to some user-defined criteria. Examples for groups are the buildings in a
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				specific region, the result of a query, or objects put together for visualization
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				purposes. Each group has a name (inherited from AbstractGMLType), functions (e.g.,
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				building group), a class and zero or more usages. A geometry may optionally be attached to a group, if
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				the geometry of the whole group differs from the geometry of the parts. Each member
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				of a group may be qualified by a role name, reflecting the role each cityObject
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				plays in the context of the group.
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				As subclass of _CityObject, a CityObjectGroup inherits all attributes and relations, in particular
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				an id, names, external references, generic attributes and generalization relations.
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				As CityObjectGroup itself is a CityObject, it may also contain groups.
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			</xs:documentation>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_CityObjectType">
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				<xs:sequence>
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					<xs:element name="class" type="xs:string" minOccurs="0"/>
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					<xs:element name="function" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="usage" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="groupMember" type="CityObjectGroupMemberType" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="CityObjectGroup" type="CityObjectGroupType" substitutionGroup="_CityObject"/>
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	<!-- ========================================================================================== -->
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	<!-- ========================================================================================== -->
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	<!-- ======================Type for Aggregation of Group Members===================================== -->
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	<!-- ========================================================================================== -->
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	<xs:complexType name="CityObjectGroupMemberType">
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		<xs:annotation>
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			<xs:documentation>Denotes the relation of a group to its members, which are
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				CityObjects. Since an association attribute group for enabling the use of references
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				is provided, the relation may either be given by a reference to a city object defined alsewhere, or by
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				inlining of  the complete city object. </xs:documentation>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="gml:AssociationType">
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				<xs:attribute name="role" type="xs:string"/>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<!-- ======================================== Sites ============================================= -->
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	<!-- ========================================================================================== -->
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	<xs:complexType name="_SiteType" abstract="true">
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		<xs:annotation>
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			<xs:documentation>Type describing the abstract superclass for buildings, facilities,
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				etc. Future extensions of CityGML like bridges and tunnels would be modelled as
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				subclasses of _Site. The german translation of site is 'Anlage'.
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				As subclass of _CityObject, a _Site inherits all attributes and relations, in particular
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				an id, names, external references, generic attributes and generalization relations.
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			</xs:documentation>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_CityObjectType"/>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="_Site" type="_SiteType" abstract="true" substitutionGroup="_CityObject"/>
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	<!-- ========================================================================================== -->
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	<!-- ===================================BUILDINGS (all LoD)======================================= -->
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	<!-- ========================================================================================== -->
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	<xs:complexType name="_AbstractBuildingType" abstract="true">
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		<xs:annotation>
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			<xs:documentation>Type describing the thematic and geometric attributes and the
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				associations of buildings. It is an abstract type, only its subclasses Building and
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				BuildingPart can be instantiated. An _AbstractBuilding may consist of BuildingParts,
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				which are again _AbstractBuildings by inheritance. Thus an aggregation hierarchy
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				between _AbstractBuildings of arbitrary depth may be specified. In such an
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				hierarchy, top elements are Buildings, while all other elements are BuildingParts.
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				Each element of such a hierarchy may have all attributes and geometries of
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				_AbstractBuildings. It must, however, be assured than no inconsistencies occur (for
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				example, if the geometry of a Building does not correspond to the geometries of its
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				parts, of if the roof type of a Building is saddle roof, while its parts have an hip
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				roof). </xs:documentation>
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		</xs:annotation>
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		<xs:complexContent>
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			<xs:extension base="_SiteType">
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				<xs:sequence>
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					<xs:annotation>
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						<xs:documentation> The name will be represented by gml:name (inherited from
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							_GML) . list order for storeyHeightsAboveground: first floor, second
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							floor,... list order for storeyHeightsBelowground: first floor below
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							ground, second floor below ground,... The lodXMultiSurface must
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							be used, if the geometry of a building is just a collection of
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							surfaces bounding a solid, but not a topologically clean solid boundary
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							necessary for GML3 solid boundaries.
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						</xs:documentation>
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					</xs:annotation>
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					<xs:element name="class" type="BuildingClassType" minOccurs="0"/>
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					<xs:element name="function" type="BuildingFunctionType" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="usage" type="BuildingUsageType" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="yearOfConstruction" type="xs:gYear" minOccurs="0"/>
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					<xs:element name="roofType" type="RoofTypeType" minOccurs="0"/>
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					<xs:element name="measuredHeight" type="gml:LengthType" minOccurs="0"/>
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					<xs:element name="storeysAboveGround" type="xs:nonNegativeInteger" minOccurs="0"/>
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					<xs:element name="storeysBelowGround" type="xs:nonNegativeInteger" minOccurs="0"/>
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					<xs:element name="storeyHeightsAboveGround" type="gml:MeasureOrNullListType" minOccurs="0"/>
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					<xs:element name="storeyHeightsBelowGround" type="gml:MeasureOrNullListType" minOccurs="0"/>
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					<xs:element name="lod1Solid" type="gml:SolidPropertyType" minOccurs="0"/>
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					<xs:element name="lod1MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
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					<xs:element name="lod1TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod2Solid" type="gml:SolidPropertyType" minOccurs="0"/>
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					<xs:element name="lod2MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
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					<xs:element name="lod2MultiCurve" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod2TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="outerBuildingInstallation" type="BuildingInstallationPropertyType" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="boundedBy" type="BoundarySurfacePropertyType" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="lod3Solid" type="gml:SolidPropertyType" minOccurs="0"/>
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					<xs:element name="lod3MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
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					<xs:element name="lod3MultiCurve" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod3TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod4Solid" type="gml:SolidPropertyType" minOccurs="0"/>
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					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
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					<xs:element name="lod4MultiCurve" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="lod4TerrainIntersection" type="gml:MultiCurvePropertyType" minOccurs="0"/>
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					<xs:element name="interiorRoom" type="InteriorRoomPropertyType" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="consistsOfBuildingPart" type="BuildingPartPropertyType" minOccurs="0" maxOccurs="unbounded"/>
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					<xs:element name="address" type="AddressPropertyType" minOccurs="0" maxOccurs="unbounded"/>
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				</xs:sequence>
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			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="_AbstractBuilding" type="_AbstractBuildingType" abstract="true" substitutionGroup="_Site"/>
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	<!-- ========================================================================================== -->
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	<xs:simpleType name="BuildingClassType">
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		<xs:annotation>
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			<xs:documentation> Class of a building. The values of this type are defined in a the XML
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				file "CityGML_ExternalCodeLists.xml", according to the dictionary concept of GML3.
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			</xs:documentation>
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		</xs:annotation>
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		<xs:restriction base="xs:string"/>
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	</xs:simpleType>
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	<!-- ========================================================================================== -->
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	<xs:simpleType name="BuildingFunctionType">
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		<xs:annotation>
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			<xs:documentation> Intended function of a building. The values of this type are defined in the XML
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				file "CityGML_ExternalCodeLists.xml", according to the dictionary concept of GML3.
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				The values may be adopted from ALKIS, the german standard for cadastre modelling.
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				If the cadastre models from other countries differ in the building functions,
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				these values may be compiled in another codelist to be used with CityGML.
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			</xs:documentation>
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		</xs:annotation>
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		<xs:restriction base="xs:string"/>
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	</xs:simpleType>
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	<!-- ========================================================================================== -->
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	<xs:simpleType name="BuildingUsageType">
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		<xs:annotation>
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			<xs:documentation> Actual usage of a building. The values of this type are defined in a the XML
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				file "CityGML_ExternalCodeLists.xml", according to the dictionary concept of GML3..
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			</xs:documentation>
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		</xs:annotation>
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		<xs:restriction base="xs:string"/>
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	</xs:simpleType>
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	<!-- ========================================================================================== -->
400 
	<xs:simpleType name="RoofTypeType">
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		<xs:annotation>
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			<xs:documentation>Roof Types. The values of this type are defined in a XML file,
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				according to the dictionary concept of GML3.</xs:documentation>
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		</xs:annotation>
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		<xs:restriction base="xs:string"/>
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	</xs:simpleType>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="BuildingPartType">
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		<xs:complexContent>
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			<xs:extension base="_AbstractBuildingType"/>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="BuildingPart" type="BuildingPartType" substitutionGroup="_AbstractBuilding"/>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="BuildingType">
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		<xs:complexContent>
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			<xs:extension base="_AbstractBuildingType">
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				<xs:sequence/>
420 
			</xs:extension>
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		</xs:complexContent>
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	</xs:complexType>
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	<!-- ========================================================================================== -->
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	<xs:element name="Building" type="BuildingType" substitutionGroup="_AbstractBuilding"/>
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	<!-- ========================================================================================== -->
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	<xs:complexType name="BuildingPartPropertyType">
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		<xs:annotation>
428 
			<xs:documentation>Denotes the relation of an _AbstractBuilding to its building parts. The
429 
				gml:AssociationType attribute group for enabling the
430 
				use of refs is not repeated in the restriction and thus omitted. The building part
431 
				has to be given inline, i.e. explicitely in this property. The reason for this inline definition is
432 
				that no BuildingPart is used by more than one building, thus the use or references to building
433 
				parts defined elsewhere is prohibited.
434 
			</xs:documentation>
435 
		</xs:annotation>
436 
		<xs:complexContent>
437 
			<xs:restriction base="gml:AssociationType">
438 
				<xs:sequence>
439 
					<xs:element ref="BuildingPart"/>
440 
				</xs:sequence>
441 
			</xs:restriction>
442 
		</xs:complexContent>
443 
	</xs:complexType>
444 
	<!-- ========================================================================================== -->
445 
	<xs:complexType name="BuildingInstallationType">
446 
		<xs:annotation>
447 
			<xs:documentation>A BuildingInstallation (German translation is 'Gebäudecharakteristik')
448 
				is a part of a Building which has not the significance of a BuildingPart. Examples
449 
				are stairs, antennas, balconies or small roofs.
450 
				As subclass of _CityObject, a BuildingInstallation inherits all attributes and relations, in particular
451 
				an id, names, external references, generic attributes and generalization relations.
452 
			</xs:documentation>
453 
		</xs:annotation>
454 
		<xs:complexContent>
455 
			<xs:extension base="_CityObjectType">
456 
				<xs:sequence>
457 
					<xs:element name="class" type="BuildingInstallationClassType" minOccurs="0"/>
458 
					<xs:element name="function" type="BuildingInstallationFunctionType" minOccurs="0" maxOccurs="unbounded"/>
459 
					<xs:element name="usage" type="BuildingInstallationUsageType" minOccurs="0" maxOccurs="unbounded"/>
460 
					<xs:element name="lod2Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
461 
					<xs:element name="lod3Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
462 
					<xs:element name="lod4Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
463 
				</xs:sequence>
464 
			</xs:extension>
465 
		</xs:complexContent>
466 
	</xs:complexType>
467 
	<!-- ========================================================================================== -->
468 
	<xs:element name="BuildingInstallation" type="BuildingInstallationType" substitutionGroup="_CityObject"/>
469 
	<!-- ========================================================================================== -->
470 
	<xs:simpleType name="BuildingInstallationClassType">
471 
		<xs:annotation>
472 
			<xs:documentation>Class of a building installation. The values of this type are defined
473 
				in the XML file CityGML_ExternalCodeLists.xml, according to the dictionary concept
474 
				of GML3. </xs:documentation>
475 
		</xs:annotation>
476 
		<xs:restriction base="xs:string"/>
477 
	</xs:simpleType>
478 
	<!-- ========================================================================================== -->
479 
	<xs:simpleType name="BuildingInstallationFunctionType">
480 
		<xs:annotation>
481 
			<xs:documentation>Function of a building installation. The values of this type are
482 
				defined in the XML file CityGML_ExternalCodeLists.xml, according to the dictionary
483 
				concept of GML3. </xs:documentation>
484 
		</xs:annotation>
485 
		<xs:restriction base="xs:string"/>
486 
	</xs:simpleType>
487 
	<!-- ========================================================================================== -->
488 
	<xs:simpleType name="BuildingInstallationUsageType">
489 
		<xs:annotation>
490 
			<xs:documentation>Actual Usage of a building installation. The values of this type are
491 
				defined in the XML file CityGML_ExternalCodeLists.xml, according to the dictionary
492 
				concept of GML3. </xs:documentation>
493 
		</xs:annotation>
494 
		<xs:restriction base="xs:string"/>
495 
	</xs:simpleType>
496 
	<!-- ========================================================================================== -->
497 
	<xs:complexType name="BuildingInstallationPropertyType">
498 
		<xs:annotation>
499 
			<xs:documentation>Denotes the relation of an AbstractBuilding to its building
500 
				installations.  The gml:AssociationType attribute group for enabling the
501 
				use of refs is not repeated in the restriction and thus omitted. The building installation
502 
				has to be given inline, i.e. explicitely in this property. The reason for this inline definition is
503 
				that no installation of a building is used by more than one building, thus the use or references to building
504 
				installations defined elsewhere is prohibited.
505 
			</xs:documentation>
506 
		</xs:annotation>
507 
		<xs:complexContent>
508 
			<xs:restriction base="gml:AssociationType">
509 
				<xs:sequence>
510 
					<xs:element ref="BuildingInstallation"/>
511 
				</xs:sequence>
512 
			</xs:restriction>
513 
		</xs:complexContent>
514 
	</xs:complexType>
515 
	<!-- ========================================================================================== -->
516 
	<!-- ========================SURFACES OF BUILDINGS AND ROOMS( LoD2 to LOD4)=====================-->
517 
	<!-- ========================================================================================== -->
518 
	<xs:complexType name="_BoundarySurfaceType" abstract="true">
519 
		<xs:annotation>
520 
			<xs:documentation>A BoundarySurface (German translation is 'Begrenzungsfläche') is a
521 
				thematic object which classifies surfaces bounding a building or a room. The
522 
				geometry of a BoundarySurface is given by MultiSurfaces.
523 
				As it is a subclass of _CityObject, it inherits all atributes and relations, in particular
524 
				the external references, the generic attributes, and the generalization relations.
525 
			</xs:documentation>
526 
		</xs:annotation>
527 
		<xs:complexContent>
528 
			<xs:extension base="_CityObjectType">
529 
				<xs:sequence>
530 
					<xs:element name="lod2MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
531 
					<xs:element name="lod3MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
532 
					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
533 
					<xs:element name="opening" type="OpeningPropertyType" minOccurs="0" maxOccurs="unbounded"/>
534 
				</xs:sequence>
535 
			</xs:extension>
536 
		</xs:complexContent>
537 
	</xs:complexType>
538 
	<!-- ========================================================================================== -->
539 
	<xs:element name="_BoundarySurface" type="_BoundarySurfaceType" abstract="true" substitutionGroup="_CityObject"/>
540 
	<!-- ========================================================================================== -->
541 
	<xs:complexType name="RoofSurfaceType">
542 
		<xs:complexContent>
543 
			<xs:extension base="_BoundarySurfaceType"/>
544 
		</xs:complexContent>
545 
	</xs:complexType>
546 
	<!-- ========================================================================================== -->
547 
	<xs:element name="RoofSurface" type="RoofSurfaceType" substitutionGroup="_BoundarySurface"/>
548 
	<!-- ========================================================================================== -->
549 
	<xs:complexType name="WallSurfaceType">
550 
		<xs:complexContent>
551 
			<xs:extension base="_BoundarySurfaceType">
552 
				<xs:sequence/>
553 
			</xs:extension>
554 
		</xs:complexContent>
555 
	</xs:complexType>
556 
	<!-- ========================================================================================== -->
557 
	<xs:element name="WallSurface" type="WallSurfaceType" substitutionGroup="_BoundarySurface"/>
558 
	<!-- ========================================================================================== -->
559 
	<xs:complexType name="GroundSurfaceType">
560 
		<xs:complexContent>
561 
			<xs:extension base="_BoundarySurfaceType"/>
562 
		</xs:complexContent>
563 
	</xs:complexType>
564 
	<!-- ========================================================================================== -->
565 
	<xs:element name="GroundSurface" type="GroundSurfaceType" substitutionGroup="_BoundarySurface"/>
566 
	<!-- ========================================================================================== -->
567 
	<xs:complexType name="ClosureSurfaceType">
568 
		<xs:complexContent>
569 
			<xs:extension base="_BoundarySurfaceType"/>
570 
		</xs:complexContent>
571 
	</xs:complexType>
572 
	<!-- ========================================================================================== -->
573 
	<xs:element name="ClosureSurface" type="ClosureSurfaceType" substitutionGroup="_BoundarySurface"/>
574 
	<!-- ========================================================================================== -->
575 
	<!-- ===================================LoD4 only Surfaces=========================================== -->
576 
	<!-- ========================================================================================== -->
577 
	<xs:complexType name="FloorSurfaceType">
578 
		<xs:complexContent>
579 
			<xs:extension base="_BoundarySurfaceType"/>
580 
		</xs:complexContent>
581 
	</xs:complexType>
582 
	<!-- ========================================================================================== -->
583 
	<xs:element name="FloorSurface" type="FloorSurfaceType" substitutionGroup="_BoundarySurface"/>
584 
	<!-- ========================================================================================== -->
585 
	<xs:complexType name="InteriorWallSurfaceType">
586 
		<xs:complexContent>
587 
			<xs:extension base="_BoundarySurfaceType"/>
588 
		</xs:complexContent>
589 
	</xs:complexType>
590 
	<!-- ========================================================================================== -->
591 
	<xs:element name="InteriorWallSurface" type="InteriorWallSurfaceType" substitutionGroup="_BoundarySurface"/>
592 
	<!-- ========================================================================================== -->
593 
	<xs:complexType name="CeilingSurfaceType">
594 
		<xs:complexContent>
595 
			<xs:extension base="_BoundarySurfaceType"/>
596 
		</xs:complexContent>
597 
	</xs:complexType>
598 
	<!-- ========================================================================================== -->
599 
	<xs:element name="CeilingSurface" type="CeilingSurfaceType" substitutionGroup="_BoundarySurface"/>
600 
	<!-- ========================================================================================== -->
601 
	<!-- ========================================================================================== -->
602 
	<!-- =============================Relation of Buildings/Rooms to its bounding Surfaces=================== -->
603 
	<!-- ========================================================================================== -->
604 
	<xs:complexType name="BoundarySurfacePropertyType">
605 
		<xs:annotation>
606 
			<xs:documentation>Denotes the relation of an Building or Room to its bounding thematic
607 
				surfaces (walls, roofs, ..). There is no differentiation between interior surfaces
608 
				bounding rooms and outer ones bounding buildings (one reason is, that
609 
				ClosureSurfaces belong to both types). It has to be made sure by additional
610 
				integrity constraints that, e.g. a building is not related to CeilingSurfaces or a
611 
				room not to RoofSurfaces.
612 
			</xs:documentation>
613 
		</xs:annotation>
614 
		<xs:complexContent>
615 
			<xs:restriction base="gml:AssociationType">
616 
				<xs:sequence minOccurs="0">
617 
					<xs:element ref="_BoundarySurface"/>
618 
				</xs:sequence>
619 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
620 
			</xs:restriction>
621 
		</xs:complexContent>
622 
	</xs:complexType>
623 
	<!-- ========================================================================================== -->
624 
	<!-- ================================Openings (LoD3 and LoD4 only)================================= -->
625 
	<!-- ========================================================================================== -->
626 
	<xs:complexType name="OpeningPropertyType">
627 
		<xs:annotation>
628 
			<xs:documentation>Denotes the relation of an BondarySurface to its openings (doors,
629 
				windows). </xs:documentation>
630 
		</xs:annotation>
631 
		<xs:complexContent>
632 
			<xs:restriction base="gml:AssociationType">
633 
				<xs:sequence minOccurs="0">
634 
					<xs:element ref="_Opening"/>
635 
				</xs:sequence>
636 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
637 
			</xs:restriction>
638 
		</xs:complexContent>
639 
	</xs:complexType>
640 
	<!-- ========================================================================================== -->
641 
	<xs:complexType name="_OpeningType" abstract="true">
642 
		<xs:annotation>
643 
			<xs:documentation> Type for openings (doors, windows) in walls. Used in LoD3 and LoD4
644 
				only. As subclass of _CityObject, an _Opening inherits all attributes and relations, in particular
645 
				an id, names, external references, generic attributes and generalization relations.
646 
			</xs:documentation>
647 
		</xs:annotation>
648 
		<xs:complexContent>
649 
			<xs:extension base="_CityObjectType">
650 
				<xs:sequence>
651 
					<xs:element name="lod3MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
652 
					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
653 
				</xs:sequence>
654 
			</xs:extension>
655 
		</xs:complexContent>
656 
	</xs:complexType>
657 
	<!-- ========================================================================================== -->
658 
	<xs:element name="_Opening" type="_OpeningType" abstract="true" substitutionGroup="_CityObject"/>
659 
	<!-- ========================================================================================== -->
660 
	<xs:complexType name="WindowType">
661 
		<xs:annotation>
662 
			<xs:documentation> Type for windows in walls. Used in LoD3 and LoD4 only .
663 
				As subclass of _CityObject, a window inherits all attributes and relations, in particular
664 
				an id, names, external references, generic attributes and generalization relations.
665 
			</xs:documentation>
666 
		</xs:annotation>
667 
		<xs:complexContent>
668 
			<xs:extension base="_OpeningType">
669 
				<xs:sequence/>
670 
			</xs:extension>
671 
		</xs:complexContent>
672 
	</xs:complexType>
673 
	<!-- ========================================================================================== -->
674 
	<xs:element name="Window" type="WindowType" substitutionGroup="_Opening"/>
675 
	<!-- ========================================================================================== -->
676 
	<xs:complexType name="DoorType">
677 
		<xs:annotation>
678 
			<xs:documentation> Type for doors in walls. Used in LoD3 and LoD4 only .
679 
				As subclass of _CityObject, a Door inherits all attributes and relations, in particular
680 
				an id, names, external references, generic attributes and generalization relations.
681 
			</xs:documentation>
682 
		</xs:annotation>
683 
		<xs:complexContent>
684 
			<xs:extension base="_OpeningType">
685 
				<xs:sequence>
686 
					<xs:element name="address" type="AddressPropertyType" minOccurs="0" maxOccurs="unbounded"/>
687 
				</xs:sequence>
688 
			</xs:extension>
689 
		</xs:complexContent>
690 
	</xs:complexType>
691 
	<!-- ========================================================================================== -->
692 
	<xs:element name="Door" type="DoorType" substitutionGroup="_Opening"/>
693 
	<!-- ========================================================================================== -->
694 
	<!-- ====================================ROOMS (LoD4 only)====================================== -->
695 
	<!-- ========================================================================================== -->
696 
	<xs:complexType name="RoomType">
697 
		<xs:annotation>
698 
			<xs:documentation>A Room is a thematic object for modelling the closed parts inside a
699 
				building. It has to be closed, if necessary by using closure surfaces. The geometry
700 
				may be either a solid, or a MultiSurface if the boundary is not topologically clean.
701 
				The room connectivity may be derived by detecting shared  thematic openings
702 
				or closure surfaces: two rooms are connected if both use the same opening object or the same
703 
				closure surface.  The thematic surfaces bounding a room are referenced by
704 
				the boundedBy property.
705 
				As subclass of _CityObject, a Room inherits all attributes and relations, in particular
706 
				an id, names, external references, generic attributes and generalization relations.
707 
			</xs:documentation>
708 
		</xs:annotation>
709 
		<xs:complexContent>
710 
			<xs:extension base="_CityObjectType">
711 
				<xs:sequence>
712 
					<xs:element name="class" type="RoomClassType" minOccurs="0"/>
713 
					<xs:element name="function" type="RoomFunctionType" minOccurs="0" maxOccurs="unbounded"/>
714 
					<xs:element name="usage" type="RoomUsageType" minOccurs="0" maxOccurs="unbounded"/>
715 
					<xs:element name="lod4Solid" type="gml:SolidPropertyType" minOccurs="0"/>
716 
					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
717 
					<xs:element name="boundedBy" type="BoundarySurfacePropertyType" minOccurs="0" maxOccurs="unbounded"/>
718 
					<xs:element name="interiorFurniture" type="InteriorFurniturePropertyType" minOccurs="0" maxOccurs="unbounded"/>
719 
					<xs:element name="interiorBuildingInstallation" type="BuildingInstallationPropertyType" minOccurs="0" maxOccurs="unbounded"/>
720 
				</xs:sequence>
721 
			</xs:extension>
722 
		</xs:complexContent>
723 
	</xs:complexType>
724 
	<!-- ========================================================================================== -->
725 
	<xs:element name="Room" type="RoomType" substitutionGroup="_CityObject"/>
726 
	<!-- ========================================================================================== -->
727 
	<xs:simpleType name="RoomClassType">
728 
		<xs:annotation>
729 
			<xs:documentation>Class of a room . The values of this type are defined in the XML file
730 
				CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
731 
			</xs:documentation>
732 
		</xs:annotation>
733 
		<xs:restriction base="xs:string"/>
734 
	</xs:simpleType>
735 
	<!-- ========================================================================================== -->
736 
	<xs:simpleType name="RoomFunctionType">
737 
		<xs:annotation>
738 
			<xs:documentation>Function of a room. The values of this type are defined in the XML
739 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
740 
			</xs:documentation>
741 
		</xs:annotation>
742 
		<xs:restriction base="xs:string"/>
743 
	</xs:simpleType>
744 
	<!-- ========================================================================================== -->
745 
	<xs:simpleType name="RoomUsageType">
746 
		<xs:annotation>
747 
			<xs:documentation>Actual Usage of a room. The values of this type are defined in the XML
748 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
749 
			</xs:documentation>
750 
		</xs:annotation>
751 
		<xs:restriction base="xs:string"/>
752 
	</xs:simpleType>
753 
	<!-- ========================================================================================== -->
754 
	<xs:complexType name="BuildingFurnitureType">
755 
		<xs:annotation>
756 
			<xs:documentation>Type for building furnitures. As subclass of _CityObject, a BuildingFurniture inherits all
757 
				attributes and relations, in particular an id, names, external references, generic attributes
758 
				and generalization relations.
759 
			</xs:documentation>
760 
		</xs:annotation>
761 
		<xs:complexContent>
762 
			<xs:extension base="_CityObjectType">
763 
				<xs:sequence>
764 
					<xs:element name="class" type="BuildingFurnitureClassType" minOccurs="0"/>
765 
					<xs:element name="function" type="BuildingFurnitureFunctionType" minOccurs="0" maxOccurs="unbounded"/>
766 
					<xs:element name="usage" type="BuildingFurnitureUsageType" minOccurs="0" maxOccurs="unbounded"/>
767 
					<xs:element name="lod4Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
768 
					<xs:element name="lod4ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
769 
				</xs:sequence>
770 
			</xs:extension>
771 
		</xs:complexContent>
772 
	</xs:complexType>
773 
	<!-- ========================================================================================== -->
774 
	<xs:element name="BuildingFurniture" type="BuildingFurnitureType" substitutionGroup="_CityObject"/>
775 
	<!-- ========================================================================================== -->
776 
	<xs:simpleType name="BuildingFurnitureClassType">
777 
		<xs:annotation>
778 
			<xs:documentation> Class of a building furniture. The values of this type are defined
779 
				in a XML file, according to the dictionary concept of GML3. </xs:documentation>
780 
		</xs:annotation>
781 
		<xs:restriction base="xs:string"/>
782 
	</xs:simpleType>
783 
	<!-- ========================================================================================== -->
784 
	<xs:simpleType name="BuildingFurnitureFunctionType">
785 
		<xs:annotation>
786 
			<xs:documentation> Function of a building furniture. The values of this type are defined
787 
				in a XML file, according to the dictionary concept of GML3. </xs:documentation>
788 
		</xs:annotation>
789 
		<xs:restriction base="xs:string"/>
790 
	</xs:simpleType>
791 
	<!-- ========================================================================================== -->
792 
	<xs:simpleType name="BuildingFurnitureUsageType">
793 
		<xs:annotation>
794 
			<xs:documentation> Actual Usage of a building Furniture. The values of this type are
795 
				defined in a XML file, according to the dictionary concept of GML3.
796 
			</xs:documentation>
797 
		</xs:annotation>
798 
		<xs:restriction base="xs:string"/>
799 
	</xs:simpleType>
800 
	<!-- ========================================================================================== -->
801 
	<!-- ========================================================================================== -->
802 
	<!-- ============================Relation of Building to Rooms (LoD4 only)============================= -->
803 
	<!-- ========================================================================================== -->
804 
	<!-- ========================================================================================== -->
805 
	<xs:complexType name="InteriorRoomPropertyType">
806 
		<xs:annotation>
807 
			<xs:documentation>Denotes the relation of an AbstractBuilding to its rooms. The
808 
				gml:AssociationType attribute group for enabling the use of refs is not repeated in
809 
				the restriction and thus omitted. The room has to be given inline within this
810 
				property, not by reference. </xs:documentation>
811 
		</xs:annotation>
812 
		<xs:complexContent>
813 
			<xs:restriction base="gml:AssociationType">
814 
				<xs:sequence>
815 
					<xs:element ref="Room"/>
816 
				</xs:sequence>
817 
			</xs:restriction>
818 
		</xs:complexContent>
819 
	</xs:complexType>
820 
	<!-- ========================================================================================== -->
821 
	<xs:complexType name="InteriorFurniturePropertyType">
822 
		<xs:annotation>
823 
			<xs:documentation>Denotes the relation of a room to its interior furnitures (movable).
824 
				The gml:AssociationType attribute group for enabling the use of refs is not repeated
825 
				in the restriction and thus omitted. The BuildingFurniture has to be given
826 
				inline within this property, not by reference. </xs:documentation>
827 
		</xs:annotation>
828 
		<xs:complexContent>
829 
			<xs:restriction base="gml:AssociationType">
830 
				<xs:sequence>
831 
					<xs:element ref="BuildingFurniture"/>
832 
				</xs:sequence>
833 
			</xs:restriction>
834 
		</xs:complexContent>
835 
	</xs:complexType>
836 
	<!-- ========================================================================================== -->
837 
	<!--==================== ================== Address (all LoD) ====================================== -->
838 
	<!-- ======================================uses xAL Standard====================================== -->
839 
	<!-- ========================================================================================== -->
840 
	<xs:complexType name="AddressPropertyType">
841 
		<xs:annotation>
842 
			<xs:documentation>Denotes the relation of an AbstractBuilding or a Door to its Addresses.
843 
			</xs:documentation>
844 
		</xs:annotation>
845 
		<xs:complexContent>
846 
			<xs:restriction base="gml:AssociationType">
847 
				<xs:sequence minOccurs="0">
848 
					<xs:element ref="Address"/>
849 
				</xs:sequence>
850 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
851 
			</xs:restriction>
852 
		</xs:complexContent>
853 
	</xs:complexType>
854 
	<!-- ========================================================================================== -->
855 
	<xs:complexType name="AddressType">
856 
		<xs:annotation>
857 
			<xs:documentation>Type for addresses. It  references the xAL address standard issued by the
858 
				OASIS consortium.
859 
				Please note, that addresses are modelled as GML features. Every address can be assigned zero or more
860 
				2D or 3D point geometries (one gml:MultiPoint geometry) locating the entrance(s).
861 
			</xs:documentation>
862 
		</xs:annotation>
863 
		<xs:complexContent>
864 
			<xs:extension base="gml:AbstractFeatureType">
865 
				<xs:sequence>
866 
					<xs:element name="xalAddress" type="xalAddressPropertyType"/>
867 
					<xs:element name="multiPoint" type="gml:MultiPointPropertyType" minOccurs="0"/>
868 
				</xs:sequence>
869 
			</xs:extension>
870 
		</xs:complexContent>
871 
	</xs:complexType>
872 
	<!-- ========================================================================================== -->
873 
	<xs:element name="Address" type="AddressType" substitutionGroup="gml:_Feature"/>
874 
	<!-- ========================================================================================== -->
875 
	<xs:complexType name="xalAddressPropertyType">
876 
		<xs:annotation>
877 
			<xs:documentation>Denotes the relation of an Address feature to the xAL address element.</xs:documentation>
878 
		</xs:annotation>
879 
		<xs:sequence>
880 
			<xs:element ref="xAL:AddressDetails"/>
881 
		</xs:sequence>
882 
	</xs:complexType>
883 
	<!-- ========================================================================================== -->
884 
	<!-- ======================================MATERIAL/TEXTURES================================== -->
885 
	<!-- ========================================================================================== -->
886 
	<xs:complexType name="TexturedSurfaceType">
887 
		<xs:annotation>
888 
			<xs:documentation>
889 
				The concept of positioning textures on surfaces complies with the standard X3D.
890 
				Because there has been no appropriate texturing concept in GML3, CityGML adds the class
891 
				TexturedSurface to the geometry model of GML 3. A texture is specified as a raster image referenced by an
892 
				URI, and can be an arbitrary resource, even in the internet. Textures are positioned by employing the concept of
893 
				texture coordinates, i.e. each texture coordinate matches with exactly one 3D coordinate of the TexturedSurface.
894 
				The use of texture coordinates allows an exact positioning and trimming of the texture on the surface geometry.
895 
				Each surface may be assigned one or more appearances, each refering to one side of the surface.
896 
			</xs:documentation>
897 
		</xs:annotation>
898 
		<xs:complexContent>
899 
			<xs:extension base="gml:OrientableSurfaceType">
900 
				<xs:sequence>
901 
					<xs:element ref="appearance" maxOccurs="unbounded"/>
902 
				</xs:sequence>
903 
			</xs:extension>
904 
		</xs:complexContent>
905 
	</xs:complexType>
906 
	<!-- ========================================================================================== -->
907 
	<xs:element name="TexturedSurface" type="TexturedSurfaceType" substitutionGroup="gml:OrientableSurface"/>
908 
	<!-- ========================================================================================== -->
909 
	<xs:element name="appearance" type="_AppearancePropertyType"/>
910 
	<!-- ========================================================================================== -->
911 
	<xs:complexType name="_AppearancePropertyType">
912 
		<xs:annotation>
913 
			<xs:documentation> A property that has an _Appearance as its value domain, which can
914 
				either be a Material (Color,...) or a Texture. The _Appearance Element can either
915 
				be encapsulated in an element of this type or an XLink reference to a remote
916 
				_Appearance element (where remote includes geometry elements located elsewhere in
917 
				the same document). Either the reference or the contained element must be given, but
918 
				neither both nor none.
919 
				The side of the surface the _Appearance refers to is given by the orientation attribute,
920 
				which refers to the corresponding sign attribute of the orientable surface:
921 
				+ means the side with positive orientation, and - the side with negative orientation.
922 
			</xs:documentation>
923 
		</xs:annotation>
924 
		<xs:sequence>
925 
			<xs:element ref="_Appearance" minOccurs="0"/>
926 
		</xs:sequence>
927 
		<xs:attribute name="orientation" type="gml:SignType" default="+"/>
928 
		<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
929 
	</xs:complexType>
930 
	<!-- ========================================================================================== -->
931 
	<xs:complexType name="_AppearanceType" abstract="true">
932 
		<xs:annotation>
933 
			<xs:documentation> This abstract type is the parent type of MaterialType and
934 
				SimpleTextureType. It is derived from gml:AbstractGMLType, thus
935 
				it inherits the attribute gml:id and may be referenced by an appearanceProperty,
936 
				although it is defined elsewhere in another appearanceProperty.
937 
			 </xs:documentation>
938 
		</xs:annotation>
939 
		<xs:complexContent>
940 
			<xs:extension base="gml:AbstractGMLType"/>
941 
		</xs:complexContent>
942 
	</xs:complexType>
943 
	<!-- ========================================================================================== -->
944 
	<xs:element name="_Appearance" type="_AppearanceType" abstract="true" substitutionGroup="gml:_GML"/>
945 
	<!-- ========================================================================================== -->
946 
	<xs:complexType name="MaterialType">
947 
		<xs:annotation>
948 
			<xs:documentation> Adopted from X3D standard (http://www.web3d.org/x3d/)
949 
			</xs:documentation>
950 
		</xs:annotation>
951 
		<xs:complexContent>
952 
			<xs:extension base="_AppearanceType">
953 
				<xs:sequence>
954 
					<xs:element name="shininess" type="doubleBetween0and1" minOccurs="0"/>
955 
					<xs:element name="transparency" type="doubleBetween0and1" minOccurs="0"/>
956 
					<xs:element name="ambientIntensity" type="doubleBetween0and1" minOccurs="0"/>
957 
					<xs:element name="specularColor" type="Color" minOccurs="0"/>
958 
					<xs:element name="diffuseColor" type="Color" minOccurs="0"/>
959 
					<xs:element name="emissiveColor" type="Color" minOccurs="0"/>
960 
				</xs:sequence>
961 
			</xs:extension>
962 
		</xs:complexContent>
963 
	</xs:complexType>
964 
	<!-- ========================================================================================== -->
965 
	<xs:element name="Material" type="MaterialType" substitutionGroup="_Appearance"/>
966 
	<!-- ========================================================================================== -->
967 
	<xs:complexType name="SimpleTextureType">
968 
		<xs:annotation>
969 
			<xs:documentation> Adopted from X3D standard (http://www.web3d.org/x3d/).
970 
				ToDo: repeat
971 
			</xs:documentation>
972 
		</xs:annotation>
973 
		<xs:complexContent>
974 
			<xs:extension base="_AppearanceType">
975 
				<xs:sequence>
976 
					<xs:element name="textureMap" type="xs:anyURI"/>
977 
					<xs:element name="textureCoordinates" type="gml:doubleList"/>
978 
					<xs:element name="textureType" type="TextureTypeType" minOccurs="0"/>
979 
					<xs:element name="repeat" type="xs:boolean" minOccurs="0"/>
980 
				</xs:sequence>
981 
			</xs:extension>
982 
		</xs:complexContent>
983 
	</xs:complexType>
984 
	<!-- ========================================================================================== -->
985 
	<xs:element name="SimpleTexture" type="SimpleTextureType" substitutionGroup="_Appearance"/>
986 
	<!-- ========================================================================================== -->
987 
	<xs:simpleType name="Color">
988 
		<xs:annotation>
989 
			<xs:documentation> List of three values (red, green, blue), separated by spaces. The
990 
				values must be in the range between zero and one. </xs:documentation>
991 
		</xs:annotation>
992 
		<xs:restriction base="doubleBetween0and1List">
993 
			<xs:minLength value="3"/>
994 
			<xs:maxLength value="3"/>
995 
		</xs:restriction>
996 
	</xs:simpleType>
997 
	<!-- ========================================================================================== -->
998 
	<xs:simpleType name="TextureTypeType">
999 
		<xs:annotation>
1000 
			<xs:documentation>
1001 
				Textures can be qualified by the attribute textureType.
1002 
				The textureType differentiates between textures, which are specific for a certain object and
1003 
				are only used for that object (specific), and prototypic textures being typical for that kind of
1004 
				object and are used many times for all objects of that kind (typical). A typical texture may
1005 
				be replaced by a specific, if available. Textures may also be classified as unknown.
1006 
			</xs:documentation>
1007 
		</xs:annotation>
1008 
		<xs:restriction base="xs:string">
1009 
			<xs:enumeration value="specific"/>
1010 
			<xs:enumeration value="typical"/>
1011 
			<xs:enumeration value="unknown"/>
1012 
		</xs:restriction>
1013 
	</xs:simpleType>
1014 
	<!-- ========================================================================================== -->
1015 
	<!-- ========================================================================================== -->
1016 
	<!--======================================Transportation Model ==================================== -->
1017 
	<!-- ========================================================================================== -->
1018 
	<!-- ========================================================================================== -->
1019 
	<xs:complexType name="_TransportationObjectType" abstract="true">
1020 
		<xs:annotation>
1021 
			<xs:documentation>Type describing the abstract superclass for transportation objects.
1022 
			</xs:documentation>
1023 
		</xs:annotation>
1024 
		<xs:complexContent>
1025 
			<xs:extension base="_CityObjectType"/>
1026 
		</xs:complexContent>
1027 
	</xs:complexType>
1028 
	<!-- ========================================================================================== -->
1029 
	<xs:element name="_TransportationObject" type="_CityObjectType" substitutionGroup="_CityObject"/>
1030 
	<!-- ========================================================================================== -->
1031 
	<xs:complexType name="TransportationComplexType">
1032 
		<xs:annotation>
1033 
			<xs:documentation>Type describing transportation complexes, which are aggregated
1034 
				features, e.g. roads, which consist of parts (traffic areas, e.g. pedestrian path,
1035 
				and auxiliary traffic areas).
1036 
				As subclass of _CityObject, a TransportationComplex inherits all attributes and relations, in particular
1037 
				an id, names, external references, generic attributes and generalization relations.
1038 
			</xs:documentation>
1039 
		</xs:annotation>
1040 
		<xs:complexContent>
1041 
			<xs:extension base="_TransportationObjectType">
1042 
				<xs:sequence>
1043 
					<xs:element name="function" type="TransportationComplexFunctionType" minOccurs="0" maxOccurs="unbounded"/>
1044 
					<xs:element name="usage" type="TransportationComplexUsageType" minOccurs="0" maxOccurs="unbounded"/>
1045 
					<xs:element name="trafficArea" type="TrafficAreaPropertyType" minOccurs="0" maxOccurs="unbounded"/>
1046 
					<xs:element name="auxiliaryTrafficArea" type="AuxiliaryTrafficAreaPropertyType" minOccurs="0" maxOccurs="unbounded"/>
1047 
					<xs:element name="lod0Network" type="gml:GeometricComplexPropertyType" minOccurs="0" maxOccurs="unbounded"/>
1048 
					<xs:element name="lod1MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1049 
					<xs:element name="lod2MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1050 
					<xs:element name="lod3MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1051 
					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1052 
				</xs:sequence>
1053 
			</xs:extension>
1054 
		</xs:complexContent>
1055 
	</xs:complexType>
1056 
	<!-- ========================================================================================== -->
1057 
	<xs:element name="TransportationComplex" type="TransportationComplexType" substitutionGroup="_TransportationObject"/>
1058 
	<!-- ========================================================================================== -->
1059 
	<xs:complexType name="TrafficAreaType">
1060 
		<xs:annotation>
1061 
			<xs:documentation>Type describing the class for traffic Areas.
1062 
				Traffic areas are the surfaces where traffic actually takes place.
1063 
				As subclass of _CityObject, a TrafficArea inherits all attributes and relations, in particular
1064 
				an id, names, external references, generic attributes and generalization relations.
1065 
			</xs:documentation>
1066 
		</xs:annotation>
1067 
		<xs:complexContent>
1068 
			<xs:extension base="_TransportationObjectType">
1069 
				<xs:sequence>
1070 
					<xs:element name="usage" type="TrafficAreaUsageType" minOccurs="0" maxOccurs="unbounded"/>
1071 
					<xs:element name="function" type="TrafficAreaFunctionType" minOccurs="0" maxOccurs="unbounded"/>
1072 
					<xs:element name="surfaceMaterial" type="TrafficSurfaceMaterialType" minOccurs="0"/>
1073 
					<xs:element name="lod2MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1074 
					<xs:element name="lod3MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1075 
					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1076 
				</xs:sequence>
1077 
			</xs:extension>
1078 
		</xs:complexContent>
1079 
	</xs:complexType>
1080 
	<!-- ========================================================================================== -->
1081 
	<xs:element name="TrafficArea" type="TrafficAreaType" substitutionGroup="_TransportationObject"/>
1082 
	<!-- ========================================================================================== -->
1083 
	<xs:complexType name="AuxiliaryTrafficAreaType">
1084 
		<xs:annotation>
1085 
			<xs:documentation>Type describing the class for auxiliary traffic Areas.
1086 
				These are the surfaces where no traffic actually takes place, but which
1087 
				belong to a transportation object. Examples are kerbstones, road markings and grass stripes.
1088 
				As subclass of _CityObject, an AuxiliaryTrafficArea inherits all attributes and relations, in particular
1089 
				an id, names, external references, generic attributes and generalization relations.
1090 
			</xs:documentation>
1091 
		</xs:annotation>
1092 
		<xs:complexContent>
1093 
			<xs:extension base="_TransportationObjectType">
1094 
				<xs:sequence>
1095 
					<xs:element name="function" type="AuxiliaryTrafficAreaFunctionType" minOccurs="0" maxOccurs="unbounded"/>
1096 
					<xs:element name="surfaceMaterial" type="TrafficSurfaceMaterialType" minOccurs="0"/>
1097 
					<xs:element name="lod2MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1098 
					<xs:element name="lod3MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1099 
					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1100 
				</xs:sequence>
1101 
			</xs:extension>
1102 
		</xs:complexContent>
1103 
	</xs:complexType>
1104 
	<!-- ========================================================================================== -->
1105 
	<xs:element name="AuxiliaryTrafficArea" type="AuxiliaryTrafficAreaType" substitutionGroup="_TransportationObject"/>
1106 
	<!-- ========================================================================================== -->
1107 
	<xs:complexType name="TrafficAreaPropertyType">
1108 
		<xs:annotation>
1109 
			<xs:documentation>Denotes the relation of a transportation complex to its parts, which
1110 
				are traffic areas in this case. Since an attribute group for enabling the use of
1111 
				references is provided, the relation may be given by a reference to an an element
1112 
				defined elsewhere or by the complete TrafficArea inline.
1113 
			</xs:documentation>
1114 
		</xs:annotation>
1115 
		<xs:complexContent>
1116 
			<xs:restriction base="gml:AssociationType">
1117 
				<xs:sequence minOccurs="0">
1118 
					<xs:element ref="TrafficArea"/>
1119 
				</xs:sequence>
1120 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
1121 
			</xs:restriction>
1122 
		</xs:complexContent>
1123 
	</xs:complexType>
1124 
	<!-- ========================================================================================== -->
1125 
	<xs:complexType name="AuxiliaryTrafficAreaPropertyType">
1126 
		<xs:annotation>
1127 
			<xs:documentation>Denotes the relation of an Transportation Complex to its parts, which
1128 
				are AuxiliaryTrafficAreas in this case . Since an attribute group for enabling the
1129 
				use of references is provided, the relation may be given by a reference to a AuxiliaryTrafficArea
1130 
				defined elsewhere or by the inline definition of an AuxiliaryTrafficArea.
1131 
			</xs:documentation>
1132 
		</xs:annotation>
1133 
		<xs:complexContent>
1134 
			<xs:restriction base="gml:AssociationType">
1135 
				<xs:sequence minOccurs="0">
1136 
					<xs:element ref="AuxiliaryTrafficArea"/>
1137 
				</xs:sequence>
1138 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
1139 
			</xs:restriction>
1140 
		</xs:complexContent>
1141 
	</xs:complexType>
1142 
	<!-- ============================Subtypes of Transportation Complex=============================== -->
1143 
	<xs:complexType name="TrackType">
1144 
		<xs:annotation>
1145 
			<xs:documentation>Type describing the class for tracks. A track is a small path
1146 
				mainly used by pedestrians.
1147 
				As subclass of _CityObject, a Track inherits all attributes and relations, in particular
1148 
				an id, names, external references, generic attributes and generalization relations.
1149 
			</xs:documentation>
1150 
		</xs:annotation>
1151 
		<xs:complexContent>
1152 
			<xs:extension base="TransportationComplexType">
1153 
				<xs:sequence/>
1154 
			</xs:extension>
1155 
		</xs:complexContent>
1156 
	</xs:complexType>
1157 
	<!-- ========================================================================================== -->
1158 
	<xs:element name="Track" type="TrackType" substitutionGroup="TransportationComplex"/>
1159 
	<!-- ========================================================================================== -->
1160 
	<xs:complexType name="RoadType">
1161 
		<xs:annotation>
1162 
			<xs:documentation>Type describing the class for roads. As subclass of _CityObject, a Road inherits
1163 
				all attributes and relations, in particular an id, names, external references, generic attributes and
1164 
				generalization relations.
1165 
			</xs:documentation>
1166 
		</xs:annotation>
1167 
		<xs:complexContent>
1168 
			<xs:extension base="TransportationComplexType">
1169 
				<xs:sequence/>
1170 
			</xs:extension>
1171 
		</xs:complexContent>
1172 
	</xs:complexType>
1173 
	<!-- ========================================================================================== -->
1174 
	<xs:element name="Road" type="RoadType" substitutionGroup="TransportationComplex"/>
1175 
	<!-- ========================================================================================== -->
1176 
	<xs:complexType name="RailwayType">
1177 
		<xs:annotation>
1178 
			<xs:documentation>Type describing the class for railways. As subclass of _CityObject, a Railway inherits all attributes
1179 
				and relations, in particular an id, names, external references, generic attributes and generalization relations.
1180 
			</xs:documentation>
1181 
		</xs:annotation>
1182 
		<xs:complexContent>
1183 
			<xs:extension base="TransportationComplexType">
1184 
				<xs:sequence/>
1185 
			</xs:extension>
1186 
		</xs:complexContent>
1187 
	</xs:complexType>
1188 
	<!-- ========================================================================================== -->
1189 
	<xs:element name="Railway" type="RailwayType" substitutionGroup="TransportationComplex"/>
1190 
	<!-- ========================================================================================== -->
1191 
	<xs:complexType name="SquareType">
1192 
		<xs:annotation>
1193 
			<xs:documentation>Type describing the class for squares. A square is an open area commonly found in
1194 
				cities (like a plaza). As subclass of _CityObject, a Square inherits all attributes and relations, in particular
1195 
				an id, names, external references, generic attributes and generalization relations.
1196 
			</xs:documentation>
1197 
		</xs:annotation>
1198 
		<xs:complexContent>
1199 
			<xs:extension base="TransportationComplexType">
1200 
				<xs:sequence/>
1201 
			</xs:extension>
1202 
		</xs:complexContent>
1203 
	</xs:complexType>
1204 
	<!-- ========================================================================================== -->
1205 
	<xs:element name="Square" type="SquareType" substitutionGroup="TransportationComplex"/>
1206 
	<!-- ========================================================================================== -->
1207 
	<xs:simpleType name="TransportationComplexFunctionType">
1208 
		<xs:annotation>
1209 
			<xs:documentation>Function of a transportation complex. The values of this type are
1210 
				defined in the XML file CityGML_ExternalCodeLists.xml, according to the dictionary
1211 
				concept of GML3. </xs:documentation>
1212 
		</xs:annotation>
1213 
		<xs:restriction base="xs:string"/>
1214 
	</xs:simpleType>
1215 
	<!-- ========================================================================================== -->
1216 
	<xs:simpleType name="TransportationComplexUsageType">
1217 
		<xs:annotation>
1218 
			<xs:documentation>Actual Usage of a transportation complex. The values of this type are
1219 
				defined in the XML file CityGML_ExternalCodeLists.xml, according to the dictionary
1220 
				concept of GML3. </xs:documentation>
1221 
		</xs:annotation>
1222 
		<xs:restriction base="xs:string"/>
1223 
	</xs:simpleType>
1224 
	<!-- ========================================================================================== -->
1225 
	<xs:simpleType name="TrafficAreaFunctionType">
1226 
		<xs:annotation>
1227 
			<xs:documentation>Function of a traffic area. The values of this type are defined in the
1228 
				XML file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1229 
			</xs:documentation>
1230 
		</xs:annotation>
1231 
		<xs:restriction base="xs:string"/>
1232 
	</xs:simpleType>
1233 
	<!-- ========================================================================================== -->
1234 
	<xs:simpleType name="AuxiliaryTrafficAreaFunctionType">
1235 
		<xs:annotation>
1236 
			<xs:documentation>Function of an auxiliary traffic area. The values of this type are
1237 
				defined in the XML file CityGML_ExternalCodeLists.xml, according to the dictionary
1238 
				concept of GML3. </xs:documentation>
1239 
		</xs:annotation>
1240 
		<xs:restriction base="xs:string"/>
1241 
	</xs:simpleType>
1242 
	<!-- ========================================================================================== -->
1243 
	<xs:simpleType name="TrafficAreaUsageType">
1244 
		<xs:annotation>
1245 
			<xs:documentation>Usage of a traffic area. The values of this type are defined in the
1246 
				XML file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1247 
			</xs:documentation>
1248 
		</xs:annotation>
1249 
		<xs:restriction base="xs:string"/>
1250 
	</xs:simpleType>
1251 
	<!-- ========================================================================================== -->
1252 
	<xs:simpleType name="TrafficSurfaceMaterialType">
1253 
		<xs:annotation>
1254 
			<xs:documentation>Type for surface materials of transportation objects. The values of
1255 
				this type are defined in the XML file CityGML_ExternalCodeLists.xml, according to
1256 
				the dictionary concept of GML3. </xs:documentation>
1257 
		</xs:annotation>
1258 
		<xs:restriction base="xs:string"/>
1259 
	</xs:simpleType>
1260 
	<!-- ========================================================================================== -->
1261 
	<!-- ========================================================================================== -->
1262 
	<!-- ==========================================Vegetation Model=================================== -->
1263 
	<!-- ========================================================================================== -->
1264 
	<!-- ========================================================================================== -->
1265 
	<!-- ========================================================================================== -->
1266 
	<xs:complexType name="_VegetationObjectType" abstract="true">
1267 
		<xs:annotation>
1268 
			<xs:documentation>Type describing the abstract superclass for vegetation objects. A
1269 
				subclass is either a SolitaryVegetationObject or a PlantCover.
1270 
			</xs:documentation>
1271 
		</xs:annotation>
1272 
		<xs:complexContent>
1273 
			<xs:extension base="_CityObjectType"/>
1274 
		</xs:complexContent>
1275 
	</xs:complexType>
1276 
	<!-- ========================================================================================== -->
1277 
	<xs:element name="_VegetationObject" type="_VegetationObjectType" substitutionGroup="_CityObject"/>
1278 
	<!-- ========================================================================================== -->
1279 
	<xs:complexType name="PlantCoverType">
1280 
		<xs:annotation>
1281 
			<xs:documentation>Type describing Plant Covers resp. Biotopes (German translation: Vegetation).
1282 
				As subclass of _CityObject, a VegetationObject inherits all attributes and relations, in particular
1283 
				an id, names, external references, generic attributes and generalization relations.
1284 
			</xs:documentation>
1285 
		</xs:annotation>
1286 
		<xs:complexContent>
1287 
			<xs:extension base="_VegetationObjectType">
1288 
				<xs:sequence>
1289 
					<xs:element name="class" type="PlantCoverClassType" minOccurs="0"/>
1290 
					<xs:element name="function" type="PlantCoverFunctionType" minOccurs="0" maxOccurs="unbounded"/>
1291 
					<xs:element name="averageHeight" type="gml:LengthType" minOccurs="0"/>
1292 
					<xs:element name="lod1MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1293 
					<xs:element name="lod2MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1294 
					<xs:element name="lod3MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1295 
					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1296 
					<xs:element name="lod1MultiSolid" type="gml:MultiSolidPropertyType" minOccurs="0"/>
1297 
					<xs:element name="lod2MultiSolid" type="gml:MultiSolidPropertyType" minOccurs="0"/>
1298 
					<xs:element name="lod3MultiSolid" type="gml:MultiSolidPropertyType" minOccurs="0"/>
1299 
				</xs:sequence>
1300 
			</xs:extension>
1301 
		</xs:complexContent>
1302 
	</xs:complexType>
1303 
	<!-- ========================================================================================== -->
1304 
	<xs:element name="PlantCover" type="PlantCoverType" substitutionGroup="_VegetationObject"/>
1305 
	<!-- ========================================================================================== -->
1306 
	<xs:simpleType name="PlantCoverClassType">
1307 
		<xs:annotation>
1308 
			<xs:documentation>Class of a PlantCover. The values of this type are defined in the XML
1309 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1310 
			</xs:documentation>
1311 
		</xs:annotation>
1312 
		<xs:restriction base="xs:string"/>
1313 
	</xs:simpleType>
1314 
	<!-- ========================================================================================== -->
1315 
	<xs:simpleType name="PlantCoverFunctionType">
1316 
		<xs:annotation>
1317 
			<xs:documentation>Function of a PlantCover. The values of this type are defined in the
1318 
				XML file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1319 
			</xs:documentation>
1320 
		</xs:annotation>
1321 
		<xs:restriction base="xs:string"/>
1322 
	</xs:simpleType>
1323 
	<!-- ========================================================================================== -->
1324 
	<xs:complexType name="SolitaryVegetationObjectType">
1325 
		<xs:annotation>
1326 
			<xs:documentation>Type describing solitary vegetation objects, e.g., trees. Its geometry
1327 
				is either defined explicitly by a GML 3 geometry with absolute coordinates, or in the case
1328 
				of multiple occurences of the same vegetation object,  implicitly by a reference to a
1329 
				shape definition and a transformation. The shape definition may be given in an external file.
1330 
				As subclass of _CityObject, a SolitaryVegetationObject inherits all attributes and relations, in particular
1331 
				an id, names, external references, generic attributes and generalization relations.
1332 
			</xs:documentation>
1333 
		</xs:annotation>
1334 
		<xs:complexContent>
1335 
			<xs:extension base="_VegetationObjectType">
1336 
				<xs:sequence>
1337 
					<xs:element name="class" type="PlantClassType" minOccurs="0"/>
1338 
					<xs:element name="function" type="PlantFunctionType" minOccurs="0" maxOccurs="unbounded"/>
1339 
					<xs:element name="species" type="SpeciesType" minOccurs="0"/>
1340 
					<xs:element name="height" type="gml:LengthType" minOccurs="0"/>
1341 
					<xs:element name="trunkDiameter" type="gml:LengthType" minOccurs="0"/>
1342 
					<xs:element name="crownDiameter" type="gml:LengthType" minOccurs="0"/>
1343 
					<xs:element name="lod1Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1344 
					<xs:element name="lod2Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1345 
					<xs:element name="lod3Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1346 
					<xs:element name="lod4Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1347 
					<xs:element name="lod1ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
1348 
					<xs:element name="lod2ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
1349 
					<xs:element name="lod3ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
1350 
					<xs:element name="lod4ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
1351 
				</xs:sequence>
1352 
			</xs:extension>
1353 
		</xs:complexContent>
1354 
	</xs:complexType>
1355 
	<!-- ========================================================================================== -->
1356 
	<xs:element name="SolitaryVegetationObject" type="SolitaryVegetationObjectType" substitutionGroup="_VegetationObject"/>
1357 
	<!-- ========================================================================================== -->
1358 
	<xs:simpleType name="PlantClassType">
1359 
		<xs:annotation>
1360 
			<xs:documentation>Class of a PlantType. The values of this type are defined in the XML
1361 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1362 
			</xs:documentation>
1363 
		</xs:annotation>
1364 
		<xs:restriction base="xs:string"/>
1365 
	</xs:simpleType>
1366 
	<!-- ========================================================================================== -->
1367 
	<xs:simpleType name="PlantFunctionType">
1368 
		<xs:annotation>
1369 
			<xs:documentation>Function of a PlantType. The values of this type are defined in the
1370 
				XML file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1371 
			</xs:documentation>
1372 
		</xs:annotation>
1373 
		<xs:restriction base="xs:string"/>
1374 
	</xs:simpleType>
1375 
	<!-- ========================================================================================== -->
1376 
	<xs:simpleType name="SpeciesType">
1377 
		<xs:annotation>
1378 
			<xs:documentation>Type of a Species. The values of this type are defined in the XML file
1379 
				CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1380 
			</xs:documentation>
1381 
		</xs:annotation>
1382 
		<xs:restriction base="xs:string"/>
1383 
	</xs:simpleType>
1384 
	<!-- ========================================================================================== -->
1385 
	<xs:complexType name="ImplicitRepresentationPropertyType">
1386 
		<xs:annotation>
1387 
			<xs:documentation> A property that has a Implicit Representation as its value domain,
1388 
				which is a representation of a geometry by referencing a prototype and transforming
1389 
				it to its real position in space. </xs:documentation>
1390 
		</xs:annotation>
1391 
		<xs:complexContent>
1392 
			<xs:restriction base="gml:AssociationType">
1393 
				<xs:sequence minOccurs="0">
1394 
					<xs:element ref="ImplicitGeometry"/>
1395 
				</xs:sequence>
1396 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
1397 
			</xs:restriction>
1398 
		</xs:complexContent>
1399 
	</xs:complexType>
1400 
	<!-- ========================================================================================== -->
1401 
	<xs:complexType name="ImplicitGeometryType">
1402 
		<xs:annotation>
1403 
			<xs:documentation> Type for the implicit representation of a geometry.
1404 
				An implicit geometry is a geometric object, where the shape is stored only once as a prototypical geometry,
1405 
				e.g. a tree or other vegetation object, a traffic light or a traffic sign.
1406 
				This prototypic geometry object is re-used or referenced many times, wherever the corresponding feature
1407 
				occurs in the 3D city model. Each occurrence is represented by a link to the prototypic shape geometry
1408 
				(in a local cartesian coordinate system), by a transforma-tion matrix that is multiplied with each 3D
1409 
				coordinate tuple of the prototype, and by an anchor point denoting the base point of the object in the
1410 
				world coordinate reference system. In order to determine the absolute coordinates of an implicit geometry,
1411 
				the anchor point coordinates have to be added to the matrix multiplication results. The transformation
1412 
				matrix accounts for the intended rotation, scaling, and local translation of the prototype.
1413 
				It is a 4x4 matrix that is multiplied with the prototype coordinates using homogeneous coordinates, i.e. (x,y,z,1).
1414 
				This way even a projection might be modeled by the transformation matrix.
1415 
				The concept of implicit geometries is an enhancement of the geometry model of GML3.
1416 
			</xs:documentation>
1417 
		</xs:annotation>
1418 
		<xs:complexContent>
1419 
			<xs:extension base="gml:AbstractGMLType">
1420 
				<xs:sequence>
1421 
					<xs:element name="mimeType" type="MimeTypeType" minOccurs="0"/>
1422 
					<xs:element name="transformationMatrix" type="TransformationMatrixType" minOccurs="0"/>
1423 
					<xs:element name="libraryObject" type="xs:anyURI" minOccurs="0"/>
1424 
					<xs:element name="relativeGMLGeometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1425 
					<xs:element name="referencePoint" type="gml:PointPropertyType"/>
1426 
				</xs:sequence>
1427 
			</xs:extension>
1428 
		</xs:complexContent>
1429 
	</xs:complexType>
1430 
	<!-- ========================================================================================== -->
1431 
	<xs:element name="ImplicitGeometry" type="ImplicitGeometryType" substitutionGroup="gml:_GML"/>
1432 
	<!-- ========================================================================================== -->
1433 
	<xs:simpleType name="MimeTypeType">
1434 
		<xs:annotation>
1435 
			<xs:documentation>MIME type of a geometry in an external library file. MIME types are defined by the
1436 
				IETF (Internet Engineering Task Force). The values of this type
1437 
				are defined in the XML file CityGML_ExternalCodeLists.xml, according to the
1438 
				dictionary concept of GML3. </xs:documentation>
1439 
		</xs:annotation>
1440 
		<xs:restriction base="xs:string"/>
1441 
	</xs:simpleType>
1442 
	<!-- ========================================================================================== -->
1443 
	<!-- ========================================================================================== -->
1444 
	<!-- ========================================================================================== -->
1445 
	<!-- ==========================================Water Bodies Model================================ -->
1446 
	<!-- ========================================================================================== -->
1447 
	<!-- ========================================================================================== -->
1448 
	<!-- ========================================================================================== -->
1449 
	<xs:complexType name="_WaterObjectType" abstract="true">
1450 
		<xs:annotation>
1451 
			<xs:documentation>Type describing the abstract superclass for water objects.
1452 
				As subclass of _CityObject, a _WaterObject inherits all attributes and relations, in particular
1453 
				an id, names, external references, generic attributes and generalization relations.
1454 
			</xs:documentation>
1455 
		</xs:annotation>
1456 
		<xs:complexContent>
1457 
			<xs:extension base="_CityObjectType"/>
1458 
		</xs:complexContent>
1459 
	</xs:complexType>
1460 
	<!-- ========================================================================================== -->
1461 
	<xs:element name="_WaterObject" type="_WaterObjectType" substitutionGroup="_CityObject"/>
1462 
	<!-- ========================================================================================== -->
1463 
	<xs:complexType name="WaterBodyType">
1464 
		<xs:annotation>
1465 
			<xs:documentation>Type describing Water Bodies, e.g., lakes, rivers.
1466 
				As subclass of _CityObject, a WaterBody inherits all attributes and relations, in particular
1467 
				an id, names, external references, generic attributes and generalization relations.
1468 
			</xs:documentation>
1469 
		</xs:annotation>
1470 
		<xs:complexContent>
1471 
			<xs:extension base="_WaterObjectType">
1472 
				<xs:sequence>
1473 
					<xs:element name="class" type="WaterBodyClassType" minOccurs="0"/>
1474 
					<xs:element name="function" type="WaterBodyFunctionType" minOccurs="0" maxOccurs="unbounded"/>
1475 
					<xs:element name="usage" type="WaterBodyUsageType" minOccurs="0" maxOccurs="unbounded"/>
1476 
					<xs:element name="lod0MultiCurve" type="gml:MultiCurvePropertyType" minOccurs="0"/>
1477 
					<xs:element name="lod0MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1478 
					<xs:element name="lod1MultiCurve" type="gml:MultiCurvePropertyType" minOccurs="0"/>
1479 
					<xs:element name="lod1MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1480 
					<xs:element name="lod1Solid" type="gml:SolidPropertyType" minOccurs="0"/>
1481 
					<xs:element name="lod2Solid" type="gml:SolidPropertyType" minOccurs="0"/>
1482 
					<xs:element name="lod3Solid" type="gml:SolidPropertyType" minOccurs="0"/>
1483 
					<xs:element name="lod4Solid" type="gml:SolidPropertyType" minOccurs="0"/>
1484 
					<xs:element name="boundedBy" type="BoundedByWaterSurfacePropertyType" minOccurs="0" maxOccurs="unbounded"/>
1485 
				</xs:sequence>
1486 
			</xs:extension>
1487 
		</xs:complexContent>
1488 
	</xs:complexType>
1489 
	<!-- ========================================================================================== -->
1490 
	<xs:element name="WaterBody" type="WaterBodyType" substitutionGroup="_WaterObject"/>
1491 
	<!-- ========================================================================================== -->
1492 
	<xs:simpleType name="WaterBodyClassType">
1493 
		<xs:annotation>
1494 
			<xs:documentation>Class of a Water Body. The values of this type are defined in the XML
1495 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1496 
			</xs:documentation>
1497 
		</xs:annotation>
1498 
		<xs:restriction base="xs:string"/>
1499 
	</xs:simpleType>
1500 
	<!-- ========================================================================================== -->
1501 
	<xs:simpleType name="WaterBodyFunctionType">
1502 
		<xs:annotation>
1503 
			<xs:documentation>Function of a Water Body. The values of this type are defined in the
1504 
				XML file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1505 
			</xs:documentation>
1506 
		</xs:annotation>
1507 
		<xs:restriction base="xs:string"/>
1508 
	</xs:simpleType>
1509 
	<!-- ========================================================================================== -->
1510 
	<xs:simpleType name="WaterBodyUsageType">
1511 
		<xs:annotation>
1512 
			<xs:documentation>Actual usage of a water body. The values of this type are defined in
1513 
				the XML file CityGML_ExternalCodeLists.xml, according to the dictionary concept of
1514 
				GML3. </xs:documentation>
1515 
		</xs:annotation>
1516 
		<xs:restriction base="xs:string"/>
1517 
	</xs:simpleType>
1518 
	<!-- ========================================================================================== -->
1519 
	<xs:complexType name="BoundedByWaterSurfacePropertyType">
1520 
		<xs:annotation>
1521 
			<xs:documentation> A type for a property of a Water Body denoting its boundary, which is 	a water surface.
1522 
				Since an attribute group for enabling the use of references is provided, the relation may be given
1523 
				by a reference to a WaterBoundarySurface
1524 
				defined elsewhere or by the inline definition of a WaterBoundarySurface.
1525 
			</xs:documentation>
1526 
		</xs:annotation>
1527 
		<xs:complexContent>
1528 
			<xs:restriction base="gml:AssociationType">
1529 
				<xs:sequence minOccurs="0">
1530 
					<xs:element ref="_WaterBoundarySurface"/>
1531 
				</xs:sequence>
1532 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
1533 
			</xs:restriction>
1534 
		</xs:complexContent>
1535 
	</xs:complexType>
1536 
	<!-- ========================================================================================== -->
1537 
	<xs:complexType name="_WaterBoundarySurfaceType" abstract="true">
1538 
		<xs:annotation>
1539 
			<xs:documentation>A WaterBoundarySurface is a thematic object which classifies surfaces
1540 
				bounding a water body. </xs:documentation>
1541 
		</xs:annotation>
1542 
		<xs:complexContent>
1543 
			<xs:extension base="_CityObjectType">
1544 
				<xs:sequence>
1545 
					<xs:element name="lod2Surface" type="gml:SurfacePropertyType" minOccurs="0"/>
1546 
					<xs:element name="lod3Surface" type="gml:SurfacePropertyType" minOccurs="0"/>
1547 
					<xs:element name="lod4Surface" type="gml:SurfacePropertyType" minOccurs="0"/>
1548 
				</xs:sequence>
1549 
			</xs:extension>
1550 
		</xs:complexContent>
1551 
	</xs:complexType>
1552 
	<!-- ========================================================================================== -->
1553 
	<xs:element name="_WaterBoundarySurface" type="_WaterBoundarySurfaceType" abstract="true" substitutionGroup="_CityObject"/>
1554 
	<!-- ========================================================================================== -->
1555 
	<xs:simpleType name="WaterLevelType">
1556 
		<xs:annotation>
1557 
			<xs:documentation>Type for the specification of the level of a water surface.
1558 
				The optional attribute waterLevel of a WaterSurface can be used to describe the water level,
1559 
				for which the given 3D surface geometry was acquired. This is especially important, when the
1560 
				water body is influenced by the tide. The values of this type are defined in the XML
1561 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1562 
			</xs:documentation>
1563 
		</xs:annotation>
1564 
		<xs:restriction base="xs:string"/>
1565 
	</xs:simpleType>
1566 
	<!-- ========================================================================================== -->
1567 
	<xs:complexType name="WaterSurfaceType">
1568 
		<xs:annotation>
1569 
			<xs:documentation>Type describing the surface of a water body, which separates
1570 
				the water from the air. 	As subclass of _CityObject, a WaterSurface inherits all attributes and relations, in particular
1571 
				an id, names, external references, generic attributes and generalization relations.
1572 
			</xs:documentation>
1573 
		</xs:annotation>
1574 
		<xs:complexContent>
1575 
			<xs:extension base="_WaterBoundarySurfaceType">
1576 
				<xs:sequence>
1577 
					<xs:element name="waterLevel" type="WaterLevelType" minOccurs="0"/>
1578 
				</xs:sequence>
1579 
			</xs:extension>
1580 
		</xs:complexContent>
1581 
	</xs:complexType>
1582 
	<!-- ========================================================================================== -->
1583 
	<xs:element name="WaterSurface" type="WaterSurfaceType" substitutionGroup="_WaterBoundarySurface"/>
1584 
	<!-- ========================================================================================== -->
1585 
	<xs:complexType name="WaterGroundSurfaceType">
1586 
		<xs:annotation>
1587 
			<xs:documentation>Type describing the ground surface of a water body, i.e. the boundary
1588 
				to the digital terrain model. As subclass of _CityObject, a WaterGroundSurface
1589 
				inherits all attributes and relations, in particular
1590 
				an id, names, external references, generic attributes and generalization relations.
1591 
			</xs:documentation>
1592 
		</xs:annotation>
1593 
		<xs:complexContent>
1594 
			<xs:extension base="_WaterBoundarySurfaceType">
1595 
				<xs:sequence/>
1596 
			</xs:extension>
1597 
		</xs:complexContent>
1598 
	</xs:complexType>
1599 
	<!-- ========================================================================================== -->
1600 
	<xs:element name="WaterGroundSurface" type="WaterGroundSurfaceType" substitutionGroup="_WaterBoundarySurface"/>
1601 
	<!-- ========================================================================================== -->
1602 
	<xs:complexType name="WaterClosureSurfaceType">
1603 
		<xs:annotation>
1604 
			<xs:documentation>Type describing the closure surface between water bodys.
1605 
				As subclass of _CityObject, a WaterClosureSurface inherits all attributes and relations, in particular
1606 
				an id, names, external references, generic attributes and generalization relations.
1607 
			</xs:documentation>
1608 
		</xs:annotation>
1609 
		<xs:complexContent>
1610 
			<xs:extension base="_WaterBoundarySurfaceType">
1611 
				<xs:sequence/>
1612 
			</xs:extension>
1613 
		</xs:complexContent>
1614 
	</xs:complexType>
1615 
	<!-- ========================================================================================== -->
1616 
	<xs:element name="WaterClosureSurface" type="WaterClosureSurfaceType" substitutionGroup="_WaterBoundarySurface"/>
1617 
	<!-- ========================================================================================== -->
1618 
	<!-- ========================================================================================== -->
1619 
	<!-- ========================================================================================== -->
1620 
	<!-- ==========================================Land Use ======================================== -->
1621 
	<!-- ========================================================================================== -->
1622 
	<!-- ========================================================================================== -->
1623 
	<xs:complexType name="LandUseType">
1624 
		<xs:annotation>
1625 
			<xs:documentation>Type describing the class for Land Use in all LoD. LandUse objects describe areas
1626 
				of the earth’s surface dedicated to a specific land use.  The geometry must consist of  3-D surfaces.
1627 
				As subclass of _CityObject, a LandUse inherits all attributes and relations, in particular
1628 
				an id, names, external references, generic attributes and generalization relations.
1629 
			</xs:documentation>
1630 
		</xs:annotation>
1631 
		<xs:complexContent>
1632 
			<xs:extension base="_CityObjectType">
1633 
				<xs:sequence>
1634 
					<xs:element name="class" type="LandUseClassType" minOccurs="0"/>
1635 
					<xs:element name="function" type="LandUseFunctionType" minOccurs="0" maxOccurs="unbounded"/>
1636 
					<xs:element name="usage" type="LandUseUsageType" minOccurs="0" maxOccurs="unbounded"/>
1637 
					<xs:element name="lod0MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1638 
					<xs:element name="lod1MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1639 
					<xs:element name="lod2MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1640 
					<xs:element name="lod3MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1641 
					<xs:element name="lod4MultiSurface" type="gml:MultiSurfacePropertyType" minOccurs="0"/>
1642 
				</xs:sequence>
1643 
			</xs:extension>
1644 
		</xs:complexContent>
1645 
	</xs:complexType>
1646 
	<!-- ========================================================================================== -->
1647 
	<xs:element name="LandUse" type="LandUseType" substitutionGroup="_CityObject"/>
1648 
	<!-- ========================================================================================== -->
1649 
	<xs:simpleType name="LandUseClassType">
1650 
		<xs:annotation>
1651 
			<xs:documentation>Class of a Landuse. The values of this type are defined in the XML
1652 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1653 
			</xs:documentation>
1654 
		</xs:annotation>
1655 
		<xs:restriction base="xs:string"/>
1656 
	</xs:simpleType>
1657 
	<!-- ========================================================================================== -->
1658 
	<xs:simpleType name="LandUseFunctionType">
1659 
		<xs:annotation>
1660 
			<xs:documentation>Function of a Landuse. The values of this type are defined in the XML
1661 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1662 
			</xs:documentation>
1663 
		</xs:annotation>
1664 
		<xs:restriction base="xs:string"/>
1665 
	</xs:simpleType>
1666 
	<!-- ========================================================================================== -->
1667 
	<xs:simpleType name="LandUseUsageType">
1668 
		<xs:annotation>
1669 
			<xs:documentation>Usage of a Landuse. The values of this type are defined in the XML
1670 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1671 
			</xs:documentation>
1672 
		</xs:annotation>
1673 
		<xs:restriction base="xs:string"/>
1674 
	</xs:simpleType>
1675 
	<!-- ========================================================================================== -->
1676 
	<!-- =========================================City Model Furnitures================================= -->
1677 
	<!-- ========================================================================================== -->
1678 
	<xs:complexType name="CityFurnitureType">
1679 
		<xs:annotation>
1680 
			<xs:documentation>Type describing city furnitures, like traffic lights, benches, ...
1681 
				As subclass of _CityObject, a CityFurniture inherits all attributes and relations, in particular
1682 
				an id, names, external references, generic attributes and generalization relations.
1683 
			</xs:documentation>
1684 
		</xs:annotation>
1685 
		<xs:complexContent>
1686 
			<xs:extension base="_CityObjectType">
1687 
				<xs:sequence>
1688 
					<xs:element name="class" type="CityFurnitureClassType" minOccurs="0"/>
1689 
					<xs:element name="function" type="CityFurnitureFunctionType" minOccurs="0" maxOccurs="unbounded"/>
1690 
					<xs:element name="lod1Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1691 
					<xs:element name="lod2Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1692 
					<xs:element name="lod3Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1693 
					<xs:element name="lod4Geometry" type="gml:GeometryPropertyType" minOccurs="0"/>
1694 
					<xs:element name="lod1ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
1695 
					<xs:element name="lod2ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
1696 
					<xs:element name="lod3ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
1697 
					<xs:element name="lod4ImplicitRepresentation" type="ImplicitRepresentationPropertyType" minOccurs="0"/>
1698 
				</xs:sequence>
1699 
			</xs:extension>
1700 
		</xs:complexContent>
1701 
	</xs:complexType>
1702 
	<!-- ========================================================================================== -->
1703 
	<xs:element name="CityFurniture" type="CityFurnitureType" substitutionGroup="_CityObject"/>
1704 
	<!-- ========================================================================================== -->
1705 
	<xs:simpleType name="CityFurnitureFunctionType">
1706 
		<xs:annotation>
1707 
			<xs:documentation>Function of a Furniture. The values of this type are defined in the
1708 
				XML file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1709 
			</xs:documentation>
1710 
		</xs:annotation>
1711 
		<xs:restriction base="xs:string"/>
1712 
	</xs:simpleType>
1713 
	<!-- ========================================================================================== -->
1714 
	<xs:simpleType name="CityFurnitureClassType">
1715 
		<xs:annotation>
1716 
			<xs:documentation>Class of a Furniture. The values of this type are defined in the XML
1717 
				file CityGML_ExternalCodeLists.xml, according to the dictionary concept of GML3.
1718 
			</xs:documentation>
1719 
		</xs:annotation>
1720 
		<xs:restriction base="xs:string"/>
1721 
	</xs:simpleType>
1722 
	<!-- ========================================================================================== -->
1723 
	<!-- ========================================================================================== -->
1724 
	<!-- =========================================Digital Terrain Model================================= -->
1725 
	<!-- ========================================================================================== -->
1726 
	<!-- ========================================================================================== -->
1727 
	<xs:complexType name="ReliefFeatureType">
1728 
		<xs:annotation>
1729 
			<xs:documentation>Type describing the features of the Digital Terrain Model.
1730 
				As subclass of _CityObject, a ReliefFeature inherits all attributes and relations, in particular
1731 
				an id, names, external references, generic attributes and generalization relations.
1732 
			</xs:documentation>
1733 
		</xs:annotation>
1734 
		<xs:complexContent>
1735 
			<xs:extension base="_CityObjectType">
1736 
				<xs:sequence>
1737 
					<xs:element name="lod" type="integerBetween0and4"/>
1738 
					<xs:element name="reliefComponent" type="ReliefComponentPropertyType" maxOccurs="unbounded"/>
1739 
				</xs:sequence>
1740 
			</xs:extension>
1741 
		</xs:complexContent>
1742 
	</xs:complexType>
1743 
	<!-- ========================================================================================== -->
1744 
	<xs:element name="ReliefFeature" type="ReliefFeatureType" substitutionGroup="_CityObject"/>
1745 
	<!-- ========================================================================================== -->
1746 
	<xs:complexType name="_ReliefComponentType" abstract="true">
1747 
		<xs:annotation>
1748 
			<xs:documentation>Type describing the vomponents of a relief feature - either a TIN, a
1749 
				Grid, mass points or break lines.
1750 
				As subclass of _CityObject, a ReliefComponent inherits all attributes and relations, in particular
1751 
				an id, names, external references, generic attributes and generalization relations.
1752 
			</xs:documentation>
1753 
		</xs:annotation>
1754 
		<xs:complexContent>
1755 
			<xs:extension base="_CityObjectType">
1756 
				<xs:sequence>
1757 
					<xs:element name="lod" type="integerBetween0and4"/>
1758 
					<xs:element name="extent" type="gml:PolygonPropertyType" minOccurs="0"/>
1759 
				</xs:sequence>
1760 
			</xs:extension>
1761 
		</xs:complexContent>
1762 
	</xs:complexType>
1763 
	<!-- ========================================================================================== -->
1764 
	<xs:element name="_ReliefComponent" type="_ReliefComponentType" abstract="true" substitutionGroup="_CityObject"/>
1765 
	<!-- ========================================================================================== -->
1766 
	<xs:complexType name="ReliefComponentPropertyType">
1767 
		<xs:annotation>
1768 
			<xs:documentation>Denotes the relation of a relief feature to its components. The
1769 
				relation may be given by a reference to a component definede elsewhere or by the complete inline
1770 
				definition of a component.
1771 
			</xs:documentation>
1772 
		</xs:annotation>
1773 
		<xs:complexContent>
1774 
			<xs:restriction base="gml:AssociationType">
1775 
				<xs:sequence minOccurs="0">
1776 
					<xs:element ref="_ReliefComponent"/>
1777 
				</xs:sequence>
1778 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
1779 
			</xs:restriction>
1780 
		</xs:complexContent>
1781 
	</xs:complexType>
1782 
	<!-- ========================================================================================== -->
1783 
	<xs:complexType name="TINReliefType">
1784 
		<xs:annotation>
1785 
			<xs:documentation>Type describing the TIN component of a relief feature.
1786 
				As subclass of _CityObject, a TINRelief inherits all attributes and relations, in particular
1787 
				an id, names, external references, generic attributes and generalization relations.
1788 
			</xs:documentation>
1789 
		</xs:annotation>
1790 
		<xs:complexContent>
1791 
			<xs:extension base="_ReliefComponentType">
1792 
				<xs:sequence>
1793 
					<xs:element name="tin" type="tinPropertyType"/>
1794 
				</xs:sequence>
1795 
			</xs:extension>
1796 
		</xs:complexContent>
1797 
	</xs:complexType>
1798 
	<!-- ========================================================================================== -->
1799 
	<xs:element name="TINRelief" type="TINReliefType" substitutionGroup="_ReliefComponent"/>
1800 
	<!-- ========================================================================================== -->
1801 
	<xs:complexType name="RasterReliefType">
1802 
		<xs:annotation>
1803 
			<xs:documentation>Type describing the raster component of a relief feature.
1804 
				As subclass of _CityObject, a RasterRelief inherits all attributes and relations, in particular
1805 
				an id, names, external references, generic attributes and generalization relations.
1806 
			</xs:documentation>
1807 
		</xs:annotation>
1808 
		<xs:complexContent>
1809 
			<xs:extension base="_ReliefComponentType">
1810 
				<xs:sequence>
1811 
					<xs:element name="grid" type="gridPropertyType"/>
1812 
				</xs:sequence>
1813 
			</xs:extension>
1814 
		</xs:complexContent>
1815 
	</xs:complexType>
1816 
	<!-- ========================================================================================== -->
1817 
	<xs:element name="RasterRelief" type="RasterReliefType" substitutionGroup="_ReliefComponent"/>
1818 
	<!-- ========================================================================================== -->
1819 
	<xs:complexType name="MassPointReliefType">
1820 
		<xs:annotation>
1821 
			<xs:documentation>Type describing the mass point component of a relief feature.
1822 
				As subclass of _CityObject, a MassPoint Relief inherits all attributes and relations, in particular
1823 
				an id, names, external references, generic attributes and generalization relations.
1824 
			</xs:documentation>
1825 
		</xs:annotation>
1826 
		<xs:complexContent>
1827 
			<xs:extension base="_ReliefComponentType">
1828 
				<xs:sequence>
1829 
					<xs:element name="reliefPoints" type="gml:MultiPointPropertyType"/>
1830 
				</xs:sequence>
1831 
			</xs:extension>
1832 
		</xs:complexContent>
1833 
	</xs:complexType>
1834 
	<!-- ========================================================================================== -->
1835 
	<xs:element name="MassPointRelief" type="MassPointReliefType" substitutionGroup="_ReliefComponent"/>
1836 
	<!-- ========================================================================================== -->
1837 
	<xs:complexType name="BreaklineReliefType">
1838 
		<xs:annotation>
1839 
			<xs:documentation>Type describing the break line Component of a relief feature. A break
1840 
				line relief consists of break lines or ridgeOrValleyLines (German Translation:
1841 
				Geripplinie)
1842 
				As subclass of _CityObject, a BreaklineRelief inherits all attributes and relations, in particular
1843 
				an id, names, external references, generic attributes and generalization relations.
1844 
			</xs:documentation>
1845 
		</xs:annotation>
1846 
		<xs:complexContent>
1847 
			<xs:extension base="_ReliefComponentType">
1848 
				<xs:sequence>
1849 
					<xs:choice>
1850 
						<xs:element name="ridgeOrValleyLines" type="gml:MultiCurvePropertyType" minOccurs="0"/>
1851 
						<xs:element name="breaklines" type="gml:MultiCurvePropertyType" minOccurs="0"/>
1852 
					</xs:choice>
1853 
				</xs:sequence>
1854 
			</xs:extension>
1855 
		</xs:complexContent>
1856 
	</xs:complexType>
1857 
	<!-- ========================================================================================== -->
1858 
	<xs:element name="BreaklineRelief" type="BreaklineReliefType" substitutionGroup="_ReliefComponent"/>
1859 
	<!-- ========================================================================================== -->
1860 
	<xs:complexType name="tinPropertyType">
1861 
		<xs:complexContent>
1862 
			<xs:restriction base="gml:AssociationType">
1863 
				<xs:sequence minOccurs="0">
1864 
					<xs:element ref="gml:TriangulatedSurface"/>
1865 
				</xs:sequence>
1866 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
1867 
			</xs:restriction>
1868 
		</xs:complexContent>
1869 
	</xs:complexType>
1870 
	<!-- ========================================================================================== -->
1871 
	<xs:complexType name="gridPropertyType">
1872 
		<xs:complexContent>
1873 
			<xs:restriction base="gml:AssociationType">
1874 
				<xs:sequence minOccurs="0">
1875 
					<xs:element ref="gml:RectifiedGridCoverage"/>
1876 
				</xs:sequence>
1877 
				<xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
1878 
			</xs:restriction>
1879 
		</xs:complexContent>
1880 
	</xs:complexType>
1881 
	<!-- ========================================================================================== -->
1882 
	<!-- ============= The height values of the grid are represented by Elevation elements, which have a height  ======= -->
1883 
	<!-- ============= value and a unit of measurement, e.g. meter.                                                                                 ======= -->
1884 
	<!-- ========================================================================================== -->
1885 
	<xs:element name="Elevation" type="gml:LengthType" substitutionGroup="gml:_Object"/>
1886 
	<!-- ========================================================================================== -->
1887 
	<!-- ========================================================================================== -->
1888 
	<!-- ==========================================Miscellaneous===================================== -->
1889 
	<!-- ========================================================================================== -->
1890 
	<!-- ========================================================================================== -->
1891 
	<xs:simpleType name="doubleBetween0and1">
1892 
		<xs:annotation>
1893 
			<xs:documentation>Type for values, which are greater or equal than 0 and less or equal
1894 
				than 1. Used for color encoding, for example. </xs:documentation>
1895 
		</xs:annotation>
1896 
		<xs:restriction base="xs:double">
1897 
			<xs:minInclusive value="0"/>
1898 
			<xs:maxInclusive value="1"/>
1899 
		</xs:restriction>
1900 
	</xs:simpleType>
1901 
	<!-- ========================================================================================== -->
1902 
	<xs:simpleType name="doubleBetween0and1List">
1903 
		<xs:annotation>
1904 
			<xs:documentation>List for double values, which are greater or equal than 0 and less or
1905 
				equal than 1. Used for color encoding, for example. </xs:documentation>
1906 
		</xs:annotation>
1907 
		<xs:list itemType="doubleBetween0and1"/>
1908 
	</xs:simpleType>
1909 
	<!-- ========================================================================================== -->
1910 
	<xs:simpleType name="TransformationMatrixType">
1911 
		<xs:annotation>
1912 
			<xs:documentation>Used for implicit geometries. The Transformation matrix is a 4 by 4
1913 
				matrix, thus it must be a list with 16 items. The order the matrix element are
1914 
				represented is row-major, i. e. the first 4 elements represent the first row, the
1915 
				fifth to the eight element the second row,...
1916 
			</xs:documentation>
1917 
		</xs:annotation>
1918 
		<xs:restriction base="gml:doubleList">
1919 
			<xs:minLength value="16"/>
1920 
			<xs:maxLength value="16"/>
1921 
		</xs:restriction>
1922 
	</xs:simpleType>
1923 
	<!-- ========================================================================================== -->
1924 
	<xs:simpleType name="integerBetween0and4">
1925 
		<xs:annotation>
1926 
			<xs:documentation>Type for integer values, which are greater or equal than 0 and less or
1927 
				equal than 4. Used for encoding of the LoD number. </xs:documentation>
1928 
		</xs:annotation>
1929 
		<xs:restriction base="xs:integer">
1930 
			<xs:minInclusive value="0"/>
1931 
			<xs:maxInclusive value="4"/>
1932 
		</xs:restriction>
1933 
	</xs:simpleType>
1934 
	<!-- ========================================================================================== -->
1935 
</xs:schema>