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<?xml version="1.0" encoding="UTF-8"?>
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<schema targetNamespace="http://www.opengis.net/gml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml" xmlns="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" version="3.2.0">
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	<annotation>
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		<appinfo source="urn:ogc:specification:gml:schema-xsd:geometryComplexes:3.2.0">geometryComplexes.xsd</appinfo>
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		<documentation>See ISO/DIS 19136 12.2.
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Geometric complexes (i.e. instances of gml:GeometricComplexType) are closed collections of geometric primitives, i.e. they will contain their boundaries.
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A geometric complex (gml:GeometricComplex) is defined by ISO 19107:2003, 6.6.1 as “a set of primitive geometric objects (in a common coordinate system) whose interiors are disjoint. Further, if a primitive is in a geometric complex, then there exists a set of primitives in that complex whose point-wise union is the boundary of this first primitive.”
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A geometric composite (gml:CompositeCurve, gml:CompositeSurface and gml:CompositeSolid) represents a geometric complex with an underlying core geometry that is isomorphic to a primitive, i.e. it can be viewed as a primitive and as a complex. See ISO 19107:2003, 6.1 and 6.6.3 for more details on the nature of composite geometries.
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Geometric complexes and composites are intended to be used in application schemas where the sharing of geometry is important.</documentation>
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	</annotation>
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	<include schemaLocation="geometryAggregates.xsd"/>
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	<complexType name="GeometricComplexType">
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		<complexContent>
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			<extension base="gml:AbstractGeometryType">
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				<sequence>
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					<element name="element" type="gml:GeometricPrimitivePropertyType" maxOccurs="unbounded"/>
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				</sequence>
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				<attributeGroup ref="gml:AggregationAttributeGroup"/>
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			</extension>
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		</complexContent>
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	</complexType>
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	<element name="GeometricComplex" type="gml:GeometricComplexType" substitutionGroup="gml:AbstractGeometry"/>
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	<complexType name="GeometricComplexPropertyType">
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		<annotation>
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			<documentation>A property that has a geometric complex as its value domain may either be an appropriate geometry element encapsulated in an element of this type or an XLink reference to a remote geometry element (where remote includes geometry elements located elsewhere in the same document). Either the reference or the contained element shall be given, but neither both nor none.</documentation>
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		</annotation>
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		<sequence minOccurs="0">
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			<choice>
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				<element ref="gml:GeometricComplex"/>
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				<element ref="gml:CompositeCurve"/>
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				<element ref="gml:CompositeSurface"/>
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				<element ref="gml:CompositeSolid"/>
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			</choice>
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		</sequence>
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		<attributeGroup ref="gml:OwnershipAttributeGroup"/>
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		<attributeGroup ref="gml:AssociationAttributeGroup"/>
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	</complexType>
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	<complexType name="CompositeCurveType">
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		<complexContent>
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			<extension base="gml:AbstractCurveType">
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				<sequence>
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					<element ref="gml:curveMember" maxOccurs="unbounded"/>
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				</sequence>
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				<attributeGroup ref="gml:AggregationAttributeGroup"/>
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			</extension>
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		</complexContent>
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	</complexType>
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	<element name="CompositeCurve" type="gml:CompositeCurveType" substitutionGroup="gml:AbstractCurve">
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		<annotation>
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			<documentation>A gml:CompositeCurve is represented by a sequence of (orientable) curves such that each curve in the sequence terminates at the start point of the subsequent curve in the list.
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curveMember references or contains inline one curve in the composite curve.
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The curves are contiguous, the collection of curves is ordered. Therefore, if provided, the aggregationType attribute shall have the value “sequence”.</documentation>
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		</annotation>
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	</element>
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	<complexType name="CompositeSurfaceType">
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		<complexContent>
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			<extension base="gml:AbstractSurfaceType">
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				<sequence>
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					<element ref="gml:surfaceMember" maxOccurs="unbounded"/>
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				</sequence>
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				<attributeGroup ref="gml:AggregationAttributeGroup"/>
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			</extension>
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		</complexContent>
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	</complexType>
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	<element name="CompositeSurface" type="gml:CompositeSurfaceType" substitutionGroup="gml:AbstractSurface">
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		<annotation>
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			<documentation>A gml:CompositeSurface is represented by a set of orientable surfaces. It is geometry type with all the geometric properties of a (primitive) surface. Essentially, a composite surface is a collection of surfaces that join in pairs on common boundary curves and which, when considered as a whole, form a single surface.
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surfaceMember references or contains inline one surface in the composite surface.
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The surfaces are contiguous.</documentation>
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		</annotation>
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	</element>
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	<complexType name="CompositeSolidType">
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		<complexContent>
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			<extension base="gml:AbstractSolidType">
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				<sequence>
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					<element ref="gml:solidMember" maxOccurs="unbounded"/>
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				</sequence>
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				<attributeGroup ref="gml:AggregationAttributeGroup"/>
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			</extension>
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		</complexContent>
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	</complexType>
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	<element name="CompositeSolid" type="gml:CompositeSolidType" substitutionGroup="gml:AbstractSolid">
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		<annotation>
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			<documentation>gml:CompositeSolid implements ISO 19107 GM_CompositeSolid (see ISO 19107:2003, 6.6.7) as specified in D.2.3.6.
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A gml:CompositeSolid is represented by a set of orientable surfaces. It is a geometry type with all the geometric properties of a (primitive) solid. Essentially, a composite solid is a collection of solids that join in pairs on common boundary surfaces and which, when considered as a whole, form a single solid.
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solidMember references or contains one solid in the composite solid. The solids are contiguous.</documentation>
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		</annotation>
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	</element>
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</schema>