 | Zeichnungselement / Erläuterung im Modell |
 | Annotation |
 | Annotation |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 4.0.0.0 |
|---|---|---|---|---|
| IfcAnnotation | ||||
| OwnerHistory | MODIFIED | Instantiation changed to OPTIONAL. | IFC4x2 Candidate 4.2.0.0 | |
| IfcAnnotation | ||||
| PositionedRelativeTo | ADDED | IFC4x2 to IFC4x3_RC1 | ||
| IfcAnnotation | ||||
| PredefinedType | ADDED | |||
| ReferencedInStructures | ADDED |
An annotation is an information element within the geometric (and spatial) context of a project, that adds a note or meaning to the objects which constitutes the project model. Annotations include additional points, curves, text, dimensioning, hatching and other forms of graphical notes. It also includes virtual or symbolic representations of additional model components, not representing products or spatial structures, such as event elements, survey points, contour lines or similar.
NOTE Additional presentation information (often 2D) such as tag number or hatching, that is directly related to a particular product representation is included within the IfcProductDefinitionShape having various IfcShapeRepresentation's of the IfcElement (and its subtypes). Only those presentation information, that cannot be directly related to a single product, have to be wrapped within the IfcAnnotation.
If available, the annotation should be related to the spatial context of the project, by containing the annotation within the appropriate level of the building structure (site, facility, facility part or building, storey, or space). This is handled by the IfcRelContainedInSpatialStructure relationship.
The IfcAnnotation can provide specific 0D, 1D, and 2D geometric items as representation of the annotation, offering annotation point, curves, and surfaces. In addition to the predefined type values in IfcAnnotationTypeEnum, the following values can be used for the ObjectType (with PredefinedType attribute value USERDEFINED).
'Annotation point' is an annotation provided by a point that has additional semantic. The inherited attribute ObjectType should be used to capture the type of point annotation, some suggested values are:
'Annotation curve' is an annotation provided by a curve that has additional semantic. The inherited attribute ObjectType should be used to capture the type of curve annotation, some suggested values are:
'Annotation surface': is an annotation provided by a surface that has additional semantic. The inherited attribute ObjectType should be used to capture the type of surface annotation, some suggested values are:
HISTORY New entity in IFC2x2.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| 8 | PredefinedType | IfcAnnotationTypeEnum | ? | X | |
| ContainedInStructure | IfcRelContainedInSpatialStructure @RelatedElements | S[0:1] | Relationship to a spatial structure element, to which the associate is primarily associated. | X |
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | Assignment of a globally unique identifier within the entire software world. | X | |
| 2 | OwnerHistory | IfcOwnerHistory | ? |
Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE only the last modification in stored - either as addition, deletion or modification. IFC4 CHANGE The attribute has been changed to be OPTIONAL. | X |
| 3 | Name | IfcLabel | ? | Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. | X |
| 4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. | X |
| IfcObjectDefinition | |||||
| HasAssignments | IfcRelAssigns @RelatedObjects | S[0:?] | Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups. | X | |
| Nests | IfcRelNests @RelatedObjects | S[0:1] | References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition. | X | |
| IsNestedBy | IfcRelNests @RelatingObject | S[0:?] | References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types).
IFC4 CHANGE The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition. | X | |
| HasContext | IfcRelDeclares @RelatedDefinitions | S[0:1] | References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.
IFC4 CHANGE The inverse attribute datatype has been added. | X | |
| IsDecomposedBy | IfcRelAggregates @RelatingObject | S[0:?] | References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts).
IFC4 CHANGE The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates. | X | |
| Decomposes | IfcRelAggregates @RelatedObjects | S[0:1] | References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates. | X | |
| HasAssociations | IfcRelAssociates @RelatedObjects | S[0:?] | Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification. | X | |
| IfcObject | |||||
| 5 | ObjectType | IfcLabel | ? | The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED. | X |
| IsDeclaredBy | IfcRelDefinesByObject @RelatedObjects | S[0:1] | Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE New inverse relationship, change made with upward compatibility for file based exchange. | X | |
| Declares | IfcRelDefinesByObject @RelatingObject | S[0:?] | Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE New inverse relationship, change made with upward compatibility for file based exchange. | X | |
| IsTypedBy | IfcRelDefinesByType @RelatedObjects | S[0:1] | Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type.
IFC4 CHANGE New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange. | X | |
| IsDefinedBy | IfcRelDefinesByProperties @RelatedObjects | S[0:?] | Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object.
IFC4 CHANGE The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange. | X | |
| IfcProduct | |||||
| 6 | ObjectPlacement | IfcObjectPlacement | ? | Placement of the product in space, the placement can either be absolute (relative to the world coordinate system), relative (relative to the object placement of another product), or constraint (e.g. relative to grid axes). It is determined by the various subtypes of IfcObjectPlacement, which includes the axis placement information to determine the transformation for the object coordinate system. | X |
| 7 | Representation | IfcProductRepresentation | ? | Reference to the representations of the product, being either a representation (IfcProductRepresentation) or as a special case a shape representations (IfcProductDefinitionShape). The product definition shape provides for multiple geometric representations of the shape property of the object within the same object coordinate system, defined by the object placement. | X |
| ReferencedBy | IfcRelAssignsToProduct @RelatingProduct | S[0:?] | Reference to the IfcRelAssignsToProduct relationship, by which other products, processes, controls, resources or actors (as subtypes of IfcObjectDefinition) can be related to this product. | X | |
| PositionedRelativeTo | IfcRelPositions @RelatedProducts | S[0:?] | X | ||
| ReferencedInStructures | IfcRelReferencedInSpatialStructure @RelatedElements | S[0:?] | X | ||
| IfcAnnotation | |||||
| 8 | PredefinedType | IfcAnnotationTypeEnum | ? | X | |
| ContainedInStructure | IfcRelContainedInSpatialStructure @RelatedElements | S[0:1] | Relationship to a spatial structure element, to which the associate is primarily associated. | X | |
Property Sets for Objects
The Property Sets for Objects concept template applies to this entity as shown in Table 46.
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Table 46 — IfcAnnotation Property Sets for Objects |
Annotation 2D Geometry
The Annotation 2D Geometry concept template applies to this entity as shown in Table 47.
| ||||||||||||||||
Table 47 — IfcAnnotation Annotation 2D Geometry |
Annotation 3D Geometry
The Annotation 3D Geometry concept template applies to this entity as shown in Table 48.
| ||||||||
Table 48 — IfcAnnotation Annotation 3D Geometry |
Single Survey Point
The Single Survey Point concept template applies to this entity as shown in Table 49.
| ||
Table 49 — IfcAnnotation Single Survey Point |
Single Survey Point Linearly Placed
The Single Survey Point Linearly Placed concept template applies to this entity as shown in Table 50.
| ||
Table 50 — IfcAnnotation Single Survey Point Linearly Placed |
Set Of Survey Points
The Set Of Survey Points concept template applies to this entity as shown in Table 51.
| ||
Table 51 — IfcAnnotation Set Of Survey Points |
Single Survey Line
The Single Survey Line concept template applies to this entity as shown in Table 52.
| ||
Table 52 — IfcAnnotation Single Survey Line |
Survey Elements Grouping
The Survey Elements Grouping concept template applies to this entity as shown in Table 53.
| ||
Table 53 — IfcAnnotation Survey Elements Grouping |
Survey Elements Nesting
The Survey Elements Nesting concept template applies to this entity as shown in Table 54.
Table 54 — IfcAnnotation Survey Elements Nesting |
Property Sets for Objects
The Property Sets for Objects concept template applies to this entity as shown in Table 55.
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Table 55 — IfcAnnotation Property Sets for Objects |
Instance diagram
<?xml version="1.0" encoding="utf-8"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" uuid="d9ea2999-bca0-4ee5-b750-23e6856eddad" name="IfcAnnotation" applicableRootEntity="IfcAnnotation">
<Applicability>
<Template ref="882370a7-5191-4ed3-b85d-a4034b38659a" />
<TemplateRules operator="and">
</TemplateRules>
</Applicability>
<Concepts>
<Concept uuid="ecd64d15-c9d8-402b-82e7-caeaa7d2a26d" name="Property Sets for Objects">
<Template ref="f74255a6-0c0e-4f31-84ad-24981db62461" />
<TemplateRules operator="and">
<TemplateRule Parameters="PredefinedType[Value]='ContourLine' AND PsetName[Value]='Pset_AnnotationContourLine'" />
<TemplateRule Parameters="PredefinedType[Value]='LineOfSight' AND PsetName[Value]='Pset_AnnotationLineOfSight'" />
<TemplateRule Parameters="PredefinedType[Value]='SurveyArea' AND PsetName[Value]='Pset_AnnotationSurveyArea'" />
<TemplateRule Parameters="PredefinedType[Value]='Sound' AND PsetName[Value]='Pset_SoundAttenuation'" />
</TemplateRules>
</Concept>
<Concept uuid="b17d6670-1ba5-41f2-a71f-c2df1b699aa9" name="Annotation 2D Geometry">
<Template ref="014166a7-ef2b-4818-bfcb-1128a691cf9f" />
<TemplateRules operator="and">
<TemplateRule Description="Any point or curve" Parameters="Identifier[Value]='Annotation' AND Type[Value]='Annotation2D' AND Items[Type]='IfcGeometricCurveSet'" />
<TemplateRule Description="Area for hatching" Parameters="Identifier[Value]='Annotation' AND Type[Value]='Annotation2D' AND Items[Type]='IfcAnnotationFillArea'" />
<TemplateRule Description="Text literal for applying text" Parameters="Identifier[Value]='Annotation' AND Type[Value]='Annotation2D' AND Items[Type]='IfcTextLiteral'" />
</TemplateRules>
</Concept>
<Concept uuid="9bb86507-e646-4b69-ab5e-c2d0bd15b771" name="Annotation 3D Geometry">
<Template ref="0f213846-fe15-4607-a66a-b33e98cb5887" />
<TemplateRules operator="and">
<TemplateRule Description="Any point, curve or surface representing the annotation." Parameters="Identifier[Value]='Annotation' AND Type[Value]='GeometricSet' AND Items[Type]='IfcGeometricSet'" />
</TemplateRules>
</Concept>
<Concept uuid="147e71bc-5c28-4694-840f-6ea5be189fef" name="Single Survey Point">
<Template ref="f93a9736-c813-58e1-b005-98de267abcee" />
<TemplateRules operator="and">
<TemplateRule />
</TemplateRules>
</Concept>
<Concept uuid="4eb4812d-2a27-45ee-8d25-29f44361e09d" name="Single Survey Point Linearly Placed">
<Template ref="d88a62b0-af18-5b5d-933f-76edc48e8a07" />
<TemplateRules operator="and">
<TemplateRule />
</TemplateRules>
</Concept>
<Concept uuid="57c2c0a3-55cd-40f5-ac00-ffcb60f0e610" name="Set Of Survey Points">
<Template ref="175de56c-b149-587f-a3b8-500a0bff615a" />
<TemplateRules operator="and">
<TemplateRule />
</TemplateRules>
</Concept>
<Concept uuid="17f7e020-5dfe-461c-b249-c63adb23ec08" name="Single Survey Line">
<Template ref="e4b71e85-e5f3-53bb-bac9-65ef6c08bb6e" />
<TemplateRules operator="and">
<TemplateRule />
</TemplateRules>
</Concept>
<Concept uuid="1631942b-145d-43e2-be12-49d8f971bb39" name="Survey Elements Grouping">
<Template ref="91dff210-fc85-5d8d-bdd8-75165c47e1fd" />
<TemplateRules operator="and">
<TemplateRule />
</TemplateRules>
</Concept>
<Concept uuid="18b6f381-3800-42f2-b64f-0bba62da4617" name="Survey Elements Nesting">
<Template ref="d56d815c-26a9-5877-992f-be25876deb54" />
<TemplateRules operator="and">
<TemplateRule />
</TemplateRules>
</Concept>
<Concept uuid="096f40b4-d08a-48b5-a9de-d45575c256d6" name="Property Sets for Objects">
<Template ref="f74255a6-0c0e-4f31-84ad-24981db62461" />
<TemplateRules operator="and">
<TemplateRule Parameters="PsetName[Value]='Pset_AnnotationLineOfSight'" />
<TemplateRule Parameters="PsetName[Value]='Pset_SoundAttenuation'" />
<TemplateRule Parameters="PredefinedType[Value]='CONTOURLINE' AND PsetName[Value]='Pset_AnnotationContourLine'" />
<TemplateRule Parameters="PredefinedType[Value]='SURVEY' AND PsetName[Value]='Pset_AnnotationSurveyArea'" />
</TemplateRules>
</Concept>
</Concepts>
</ConceptRoot>
<xs:element name="IfcAnnotation" type="ifc:IfcAnnotation" substitutionGroup="ifc:IfcProduct" nillable="true"/>
<xs:complexType name="IfcAnnotation">
<xs:complexContent>
<xs:extension base="ifc:IfcProduct">
<xs:attribute name="PredefinedType" type="ifc:IfcAnnotationTypeEnum" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcAnnotation
SUBTYPE OF (IfcProduct);
PredefinedType : OPTIONAL IfcAnnotationTypeEnum;
INVERSE
ContainedInStructure : SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;
END_ENTITY;
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