Basic Topological Notions and their Relation to BIM
Basic Topological Notions and their Relation to BIM
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基本拓扑概念及其与 BIM 的关系
DOI：
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发表时间：
2010
期刊：
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通讯作者：
N. Paul
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文献类型：
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作者：
N. Paul
即使没有一个共同的概念来处理“局部”和“全局”拓扑不被认为是一个问题，在BIM中的拓扑属性的ad-hoc建模没有足够的拓扑知识可能最终会有缺陷。这样的知识也有助于区分空间语义和非空间语义，避免了模型的复杂化。这种复杂性的一个很好的例子是“IfcRelConnects”类层次结构：类“IfcRelConnectsElements”定义了两个属性“Related”和“Relating”，引用了两个以某种方式连接的元素。然而，“IfcRelConnects”的另一个子类具有完全不同的签名和含义：即，类“IfcRelSpaceBoundary”将房间元素“关联”到一组边界元素，而类似的类“IfcRelCoversSpaces”将房间元素“关联”到一组边界表面。因此，我们有一个元素-元素，一个元素-集合，和一个集合-元素签名，甚至是“relating”和“related”的含义的换位。这个小例子表明，空间数据的存储概念有很多种。国际金融公司的一些巨大复杂性，
Even if the absence of a common concept for handling both “local” and “global” topologies is not considered a problem, ad-hoc-modelling of topological properties in BIM without adequate topological knowledge may end up with flaws. Such knowledge also helps distinguish spatial semantics from non-spatial semantics, and it avoids complicating the model. A good example for such complexity is the ‘IfcRelConnects’ class hierarchy: The class ‘IfcRelConnectsElements’ defines two attributes ‘Related’ and ‘Relating’ referencing two elements which are somehow connected. Another subclasses of ‘IfcRelConnects’, however, have a completely different signature and meaning: Namely, the class ‘IfcRelSpaceBoundary’ “relates” a room element to a set of boundary elements and a similar class ‘IfcRelCoversSpaces’ where a room element “is related” to a set of boundary surfaces. So we have an element-element, an element-set, and a set-element signature, and even a transposition of the meaning of “relating” and “related”. This small example shows that there exists a zoo of storage concepts for spatial data. Some of the enormous complexity of IFC, COMBINE ABSTRACT