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[CIM/Infor-Base] Understanding the Point library


What does the Point Library model?



Structures whose shape does not change according to alignment changes, such as abutments and piers, are modeled in Point Library Mode and placed in the upper mode.


CIM's modeling is based on the Library. This is the basic method of configuring Point Library, which is one of the library components.


1. Base > Library > Point > Enter the setting screen during Create operation.
2. In the basic setting of Point Library, only the ID of the Library and the name of the
   Library are given.
3. The reference point of the object can be set by the user by Constraint Entity > Point.
    In addition, the library can be assigned according to the constraint in the parent mode only
    when the linkage between the object and Constraint Point is set by
    Expression Entity > Single Point (or Multi-Points).


Figure. 1 Point Library Setting Dialog

Figure. 2 Create of Constraint Point

The Point Library space contains a single group of modeling elements that reference a Reference Point.

It is a basic unit modeling space for allocating to the Curve Library and the Assembly Unit or Base Mode model of higher concepts.

Figure. 3 Constraint of Point Library

Abutments, piers, bridge bearings, street lights, signs, etc. are affected by arrangement or arrangement according to alignment changes, but if the shape is unique, it is modeled in the Point Library .

Each object created in Point Library Mode is grouped into one group based on the Reference Point
(0, 0, 0) to form the Point Library.

At this time, each object has its own constraint to belong to a group, and the types of constraint are as follows.


Point Library Constraint Type
Single Point Constraint
: A constraint that refers to one constraint point and the position changes according to the
  geometry of the point, and the shape change is possible only by modifying the section
  (Ex: street lamp without shape change)
Multi-Points Constraint
: A constraint that changes shape and position according to the geometry of each point by
  referencing one Default Constraint Point and several constraint points to the geometry of the
  (Ex: Change of column length of T-shaped pier and elevation of foundation accordingly change)

A detailed explanation for understanding Constraint Point can be found in the corresponding technical document.
(Understanding the Constraint Entity(Point))


The following example is an example of allocation from the Point Library space to the Base Mode model space.

Figure. 4 Point Library (pier model)

Point library modeling in which the coping part of the pier is (0, 0, 0) and the constraint of each part is defined

Figure. 5 Assembly Unit (Pier Span Construction Model)

Configure the Substructure Group by assigning the Point Library model to the Array Point of the Assembly Unit

Figure. 6 Base Mode (pier model assigned to curved layout)

Modeling composed of Assembly Unit model with Base Mode Layout

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