CATIA命令中这两个的区别

大萝卜11

各位高手有谁能解释下CATIA中这两个的命令的区别哈1、Geometrical set ... ;2、ordered Geometrical set ...

engineer_lyc

初学者，等待高人解答...。

carxzhu

1/Geometrical sets enable to gather various features in a same set or sub-set and organize the specification tree when it becomes too complex or too long. You can put any element you wish in the geometrical set, it does not have to be structured in a logical way. The order of these elements is not meaningful as their access as well as their visualization is managed independently and without any rule.
2/Geometrical sets enable to gather various features in a same set or sub-set. The order of these features is not meaningful as their access as well as their visualization is managed independently and without any rule. However flexible, this structure does not fit the design process.
That is why ordered geometrical sets introduced notions of succession of steps that define the design, and absorption.
Creation features create a new object and modification features create a new state in an existing object as well as absorb the preceding state(s). Absorbed features are neither visible nor accessible, as if ''masked'' by their absorbing feature.
In an ordered geometrical set, the order of apparition of features in the specification tree is consistent with the steps of creation of the design.
Unlike features within a geometrical set, features in an ordered geometrical set can be set as current: a given step of the design creation is chosen and what is located after it is neither accessible nor visible.