Trapezprofil - parametrische Definition | |
Trapezium Profile Def | |
Définition de section d'un profil trapézoïdal |
Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
---|---|---|---|---|
IfcTrapeziumProfileDef | ||||
Position | MODIFIED | Instantiation changed to OPTIONAL. |
IfcTrapeziumProfileDef defines a trapezium as the profile definition used by the swept surface geometry or the swept area solid. It is given by its Top X and Bottom X extent and its Y extent as well as by the offset of the Top X extend, and placed within the 2D position coordinate system, established by the Position attribute. It is placed centric within the position coordinate system, that is, in the center of the bounding box.
HISTORY New entity in IFC1.5. The use definition has changed in IFC2x.
Figure 399 illustrates parameters of the trapezium profile definition.
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Figure 399 — Trapezium profile |
# | Attribute | Type | Cardinality | Description | C |
---|---|---|---|---|---|
4 | BottomXDim | IfcPositiveLengthMeasure | [1:1] | The extent of the bottom line measured along the implicit x-axis. | X |
5 | TopXDim | IfcPositiveLengthMeasure | [1:1] | The extent of the top line measured along the implicit x-axis. | X |
6 | YDim | IfcPositiveLengthMeasure | [1:1] | The extent of the distance between the parallel bottom and top lines measured along the implicit y-axis. | X |
7 | TopXOffset | IfcLengthMeasure | [1:1] | Offset from the beginning of the top line to the bottom line, measured along the implicit x-axis. | X |
# | Attribute | Type | Cardinality | Description | C |
---|---|---|---|---|---|
IfcProfileDef | |||||
1 | ProfileType | IfcProfileTypeEnum | [1:1] | Defines the type of geometry into which this profile definition shall be resolved, either a curve or a surface area. In case of curve the profile should be referenced by a swept surface, in case of area the profile should be referenced by a swept area solid. | X |
2 | ProfileName | IfcLabel | [0:1] | Human-readable name of the profile, for example according to a standard profile table. As noted above, machine-readable standardized profile designations should be provided in IfcExternalReference.ItemReference. | X |
HasExternalReference | IfcExternalReferenceRelationship @RelatedResourceObjects | S[0:?] | Reference to external information, e.g. library, classification, or document information, which is associated with the profile. | X | |
HasProperties | IfcProfileProperties @ProfileDefinition | S[0:?] | Additional properties of the profile, for example mechanical properties. | X | |
IfcParameterizedProfileDef | |||||
3 | Position | IfcAxis2Placement2D | [0:1] | Position coordinate system of the parameterized profile definition. If unspecified, no translation and no rotation is applied. | X |
IfcTrapeziumProfileDef | |||||
4 | BottomXDim | IfcPositiveLengthMeasure | [1:1] | The extent of the bottom line measured along the implicit x-axis. | X |
5 | TopXDim | IfcPositiveLengthMeasure | [1:1] | The extent of the top line measured along the implicit x-axis. | X |
6 | YDim | IfcPositiveLengthMeasure | [1:1] | The extent of the distance between the parallel bottom and top lines measured along the implicit y-axis. | X |
7 | TopXOffset | IfcLengthMeasure | [1:1] | Offset from the beginning of the top line to the bottom line, measured along the implicit x-axis. | X |
# | Concept | Model View |
---|---|---|
IfcProfileDef | ||
Property Sets for Objects | Common Use Definitions |
<xs:element name="IfcTrapeziumProfileDef" type="ifc:IfcTrapeziumProfileDef" substitutionGroup="ifc:IfcParameterizedProfileDef" nillable="true"/>
<xs:complexType name="IfcTrapeziumProfileDef">
<xs:complexContent>
<xs:extension base="ifc:IfcParameterizedProfileDef">
<xs:attribute name="BottomXDim" type="ifc:IfcPositiveLengthMeasure" use="optional"/>
<xs:attribute name="TopXDim" type="ifc:IfcPositiveLengthMeasure" use="optional"/>
<xs:attribute name="YDim" type="ifc:IfcPositiveLengthMeasure" use="optional"/>
<xs:attribute name="TopXOffset" type="ifc:IfcLengthMeasure" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcTrapeziumProfileDef
SUBTYPE OF (IfcParameterizedProfileDef);
BottomXDim : IfcPositiveLengthMeasure;
TopXDim : IfcPositiveLengthMeasure;
YDim : IfcPositiveLengthMeasure;
TopXOffset : IfcLengthMeasure;
END_ENTITY;