IFC 4.3.2.20251031 (IFC4X3_ADD2) under development

4.1.4.4.5 Survey Elements Nesting

测量注释(如点、线、曲线)的有序排列。

对于不相关项目顺序的测量元素集(例如点云或测量线串集合),可以使用“测量元素分组”模板。

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。

G <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAnnotation.htm'>IfcAnnotation</a> IfcAnnotation 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:?] 8. PredefinedType [0:1]      ContainedInStructure [0:1] IfcRelNests_0 IfcRelNests 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1] 5. RelatingObject [1:1] 6. RelatedObjects [1:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAnnotation.htm'>IfcAnnotation</a>:IsNestedBy1->IfcRelNests_0:RelatingObject0 IfcAnnotationTypeEnum_1 IfcAnnotationTypeEnum <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcAnnotation.htm'>IfcAnnotation</a>:PredefinedType1->IfcAnnotationTypeEnum_1:IfcAnnotationTypeEnum0 IfcAnnotation_1 IfcAnnotation 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:?] 8. PredefinedType [0:1]      ContainedInStructure [0:1] IfcRelNests_0:RelatedObjects1->IfcAnnotation_1:IfcAnnotation0 IfcAnnotationTypeEnum_2 IfcAnnotationTypeEnum IfcAnnotation_1:PredefinedType1->IfcAnnotationTypeEnum_2:IfcAnnotationTypeEnum0 constraint_0 =SURVEY IfcAnnotationTypeEnum_1->constraint_0 constraint_1 =SURVEY IfcAnnotationTypeEnum_2->constraint_1
Figure 4.1.4.4.5.A

General Usage

ApplicableEntity
IfcAnnotation
表 4.1.4.4.5.B