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20252453-T-424 项目

4.1.7.1.10 映射几何体(Mapped Geometry)

元素可以具有“映射几何体”表示形式,该表示形式在相应的对象类型处重用了“对象类型定义”概念中的“对象类型形状”概念。

映射几何体表示形式的表示标识符是任何其他有效的几何表示形式标识符,例如“Body”、“FootPrint”或“Axis”。

下图展示了应用此概念时使用的通用类和关系。 此外,概念可能对常见或标准化的行业实践和场景具有特殊意义。对于这些特定的使用场景,下表展示了用户可采用的推荐通用使用模式列表。

<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcProduct.htm'>IfcProduct</a> IfcProduct 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcProductDefinitionShape.htm'>IfcProductDefinitionShape</a> IfcProductDefinitionShape 1. Name [0:1] 2. Description [0:1] 3. Representations [1:?]      ShapeOfProduct [1:?]      HasShapeAspects [0:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcProduct.htm'>IfcProduct</a>:Representation1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcProductDefinitionShape.htm'>IfcProductDefinitionShape</a>:IfcProductDefinitionShape0 IfcShapeRepresentation_0 IfcShapeRepresentation 1. ContextOfItems [1:1] Identifier 2. RepresentationIdentifier [0:1] Type 3. RepresentationType [0:1] 4. Items [1:?]      RepresentationMap [0:1]      LayerAssignments [0:?]      OfProductRepresentation [0:?]      OfShapeAspect [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcProductDefinitionShape.htm'>IfcProductDefinitionShape</a>:Representations1->IfcShapeRepresentation_0:IfcShapeRepresentation0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGeometricRepresentationContext.htm'>IfcGeometricRepresentationContext</a> IfcGeometricRepresentationContext 1. ContextIdentifier [0:1] 2. ContextType [0:1]      RepresentationsInContext [0:?] 3. CoordinateSpaceDimension [1:1] 4. Precision [0:1] 5. WorldCoordinateSystem [1:1] 6. TrueNorth [0:1]      HasSubContexts [0:?]      HasCoordinateOperation [0:1] IfcShapeRepresentation_0:ContextOfItems1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGeometricRepresentationContext.htm'>IfcGeometricRepresentationContext</a>:IfcGeometricRepresentationContext0 IfcLabel_0 IfcLabel IfcShapeRepresentation_0:RepresentationIdentifier1->IfcLabel_0:IfcLabel0 IfcLabel_1 IfcLabel IfcShapeRepresentation_0:RepresentationType1->IfcLabel_1:IfcLabel0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcMappedItem.htm'>IfcMappedItem</a> IfcMappedItem      LayerAssignment [0:1]      StyledByItem [0:1] 1. MappingSource [1:1] 2. MappingTarget [1:1] IfcShapeRepresentation_0:Items1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcMappedItem.htm'>IfcMappedItem</a>:IfcMappedItem0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a> IfcRepresentationMap 1. MappingOrigin [1:1] 2. MappedRepresentation [1:1]      HasShapeAspects [0:?]      MapUsage [0:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcMappedItem.htm'>IfcMappedItem</a>:MappingSource1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a>:IfcRepresentationMap0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianTransformationOperator3D.htm'>IfcCartesianTransformationOperator3D</a> IfcCartesianTransformationOperator3D      LayerAssignment [0:1]      StyledByItem [0:1] 1. Axis1 [0:1] 2. Axis2 [0:1] 3. LocalOrigin [1:1] 4. Scale [0:1] 5. Axis3 [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcMappedItem.htm'>IfcMappedItem</a>:MappingTarget1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianTransformationOperator3D.htm'>IfcCartesianTransformationOperator3D</a>:IfcCartesianTransformationOperator3D0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianTransformationOperator3DnonUniform.htm'>IfcCartesianTransformationOperator3DnonUniform</a> IfcCartesianTransformationOperator3DnonUniform      LayerAssignment [0:1]      StyledByItem [0:1] 1. Axis1 [0:1] 2. Axis2 [0:1] 3. LocalOrigin [1:1] 4. Scale [0:1] 5. Axis3 [0:1] 6. Scale2 [0:1] 7. Scale3 [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcMappedItem.htm'>IfcMappedItem</a>:MappingTarget1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianTransformationOperator3DnonUniform.htm'>IfcCartesianTransformationOperator3DnonUniform</a>:IfcCartesianTransformationOperator3DnonUniform0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement3D.htm'>IfcAxis2Placement3D</a> IfcAxis2Placement3D      LayerAssignment [0:1]      StyledByItem [0:1] 1. Location [1:1] 2. Axis [0:1] 3. RefDirection [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a>:MappingOrigin1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement3D.htm'>IfcAxis2Placement3D</a>:IfcAxis2Placement3D0 IfcShapeRepresentation_1 IfcShapeRepresentation 1. ContextOfItems [1:1] 2. RepresentationIdentifier [0:1] 3. RepresentationType [0:1] 4. Items [1:?]      RepresentationMap [0:1]      LayerAssignments [0:?]      OfProductRepresentation [0:?]      OfShapeAspect [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRepresentationMap.htm'>IfcRepresentationMap</a>:MappedRepresentation1->IfcShapeRepresentation_1:IfcShapeRepresentation0 IfcDirection_2 IfcDirection      LayerAssignment [0:1]      StyledByItem [0:1] 1. DirectionRatios [2:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianTransformationOperator3D.htm'>IfcCartesianTransformationOperator3D</a>:Axis11->IfcDirection_2:IfcDirection0 IfcDirection_3 IfcDirection      LayerAssignment [0:1]      StyledByItem [0:1] 1. DirectionRatios [2:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianTransformationOperator3D.htm'>IfcCartesianTransformationOperator3D</a>:Axis21->IfcDirection_3:IfcDirection0 IfcCartesianPoint_1 IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianTransformationOperator3D.htm'>IfcCartesianTransformationOperator3D</a>:LocalOrigin1->IfcCartesianPoint_1:IfcCartesianPoint0 IfcDirection_4 IfcDirection      LayerAssignment [0:1]      StyledByItem [0:1] 1. DirectionRatios [2:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianTransformationOperator3D.htm'>IfcCartesianTransformationOperator3D</a>:Axis31->IfcDirection_4:IfcDirection0 IfcCartesianPoint_0 IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement3D.htm'>IfcAxis2Placement3D</a>:Location1->IfcCartesianPoint_0:IfcCartesianPoint0 IfcDirection_0 IfcDirection      LayerAssignment [0:1]      StyledByItem [0:1] 1. DirectionRatios [2:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement3D.htm'>IfcAxis2Placement3D</a>:Axis1->IfcDirection_0:IfcDirection0 IfcDirection_1 IfcDirection      LayerAssignment [0:1]      StyledByItem [0:1] 1. DirectionRatios [2:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAxis2Placement3D.htm'>IfcAxis2Placement3D</a>:RefDirection1->IfcDirection_1:IfcDirection0
Figure 4.1.7.1.10.A

General Usage

ApplicableEntity
IfcProduct
表 4.1.7.1.10.B