IfcMirroredProfileDef

Natural language names
gespiegeltes Profil
Mirrored Profile Def
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4 4.0.0.0
    IfcMirroredProfileDefADDED
IFC2x3 to IFC4 4.0.0.0
    IfcMirroredProfileDefADDED
Semantic definitions at the entity
Entity definition

The IfcMirroredProfileDef defines the profile by mirroring the parent profile about the y axis of the parent profile coordinate system. That is, left and right of the parent profile are swapped.

Notes:

IfcMirroredProfileDef is primarily useful together with IfcCShapeProfileDef, IfcLShapeProfileDef, IfcUShapeProfileDef, or IfcZShapeProfileDef as parent profile but can be used with other parent profile types as well.

Mirroring of an IfcParameterizedProfileDef is performed after translation and rotation according to its Position attribute. For example, if the parent profile's Position offsets it by half of its width to the right, then the mirrored profile will be offset by half of its width to the left.

Mirroring about the x axis, i.e. swapping top and bottom, can be achieved by mirroring about the y axis coupled with 180 degree rotation about the z axis. In general, rotation happens in a containing object such as IfcSweptAreaSolid, i.e. after mirroring by IfcMirroredProfileDef was performed. If the parent profile is an IfcParameterizedProfileDef, rotation can alternatively happen already in the parent profile by means of its Position attribute, i.e. before mirroring by IfcMirroredProfileDef was performed.

HISTORY  New entity in IFC4.

Attribute definitions
#AttributeTypeCardinalityDescription G
Operator
:= IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcCartesianTransformationOperator( -- Axis1 IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcDirection([-1., 0.]), -- Axis2 IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcDirection([ 0., 1.]), -- LocalOrigin IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcPoint() || IfcCartesianPoint([0., 0.]), -- Scale 1.) || IfcCartesianTransformationOperator2D()
IfcCartesianTransformationOperator2D X
Inherited definitions from supertypes
Entity inheritance IfcDerivedProfileDef IfcProfileDef
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcProfileDef
1ProfileTypeIfcProfileTypeEnum 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
2ProfileNameIfcLabel? 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
HasExternalReferenceIfcExternalReferenceRelationship
@RelatedResourceObjects
S[0:?]Reference to external information, e.g. library, classification, or document information, which is associated with the profile.
IFC4 CHANGE New inverse attribute
X
HasPropertiesIfcProfileProperties
@ProfileDefinition
S[0:?]Additional properties of the profile, for example mechanical properties.
IFC4 CHANGE New inverse attribute
X
IfcDerivedProfileDef
3ParentProfileIfcProfileDef The parent profile provides the origin of the transformation. X
5LabelIfcLabel? The name by which the transformation may be referred to. The actual meaning of the name has to be defined in the context of applications. X
IfcMirroredProfileDef
Operator
:= IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcCartesianTransformationOperator( -- Axis1 IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcDirection([-1., 0.]), -- Axis2 IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcDirection([ 0., 1.]), -- LocalOrigin IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcPoint() || IfcCartesianPoint([0., 0.]), -- Scale 1.) || IfcCartesianTransformationOperator2D()
IfcCartesianTransformationOperator2D X
Definitions applying to General Usage

Concept inheritance

#ConceptTemplateModel View
IfcProfileDef
Property Sets for ObjectsProperty Sets for ObjectsGeneral Usage
Formal representations
XML Specification
 <xs:complexType name="IfcMirroredProfileDef-temp" abstract="true">
  <xs:complexContent>
   <xs:restriction base="ifc:IfcDerivedProfileDef">
    <xs:sequence>
     <xs:element name="ParentProfile" type="ifc:IfcProfileDef" nillable="true"/>
    </xs:sequence>
   </xs:restriction>
  </xs:complexContent>
 </xs:complexType>
 <xs:element name="IfcMirroredProfileDef" type="ifc:IfcMirroredProfileDef" substitutionGroup="ifc:IfcDerivedProfileDef" nillable="true"/>
 <xs:complexType name="IfcMirroredProfileDef">
  <xs:complexContent>
   <xs:extension base="ifc:IfcMirroredProfileDef-temp"/>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcMirroredProfileDef
 SUBTYPE OF (IfcDerivedProfileDef);
 DERIVE
  SELF\IfcDerivedProfileDef.Operator : IfcCartesianTransformationOperator2D := IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcCartesianTransformationOperator( -- Axis1 IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcDirection([-1., 0.]), -- Axis2 IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcDirection([ 0., 1.]), -- LocalOrigin IfcRepresentationItem() || IfcGeometricRepresentationItem() || IfcPoint() || IfcCartesianPoint([0., 0.]), -- Scale 1.) || IfcCartesianTransformationOperator2D();
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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