ASSEMBLY SCOPE ENTITY

ENTITY ASSEMBLY SCOPE ENTITY = CLASS( INTEGER, REAL,... 

SURFACE SCOPE ENTITY, DIRECTION(DIM), PLACEMENT(DIM), SOLID MODEL, COMPONENT, ROUTINE, ASSEMBLY, MACRO,... 

Any pickable element on the screen belongs to an entity of the actual environment. Example If an edge of a boundary representation (B REP) is picked inside the scope of the B REP then the edge has been identified as an entity. If, however, the same edge is picked from outside the B REP then the B REP entity is identified. If the B REP is part of an assembly which was displayed and not entered then picking the edge would identify the assembly rather than the B REP or the edge alone. 

For an assembly with a scope the transformation is applied to all geometric entities in the scope of the assembly... 

An assembly (see Figure 3 on page 49) is an entity that has a scope. The scope of an assembly is the same as the scope of a world. Hence, a whole world may be transferred to become an assembly in the receiving system. In this... 

In addition to providing a scope for other data, an assembly has a result called result . The result is a list of instances of components or, recursively, assemblies. Whenever an operation such as display, evaluate volxime, or other is applied to an assembly, it is meant to apply to all the entities of "result . 

Each entity when written onto the neutral file is assigned a unique positive integer as name. Uniqueness must be guaranteed in any given environment. However, names may be used (but it is not recommanded to use this technique) repeatedly in scopes which do not overlap. E.g., the same name may be used for entities inside any two assemblies contained in the scope of the world. 

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