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SPAlaw Class unary_data_law

SPAbase.ACIS_OBJECT
  |
  +---SPAlaw.law
    |
    +---unary_data_law
 

Usage: you can derive this class.

public class unary_data_law

Provides methods and data for laws that have one law data member.

Role: This law has one law data argument, such as a curve_law, wire_law, or surface_law. It is parsed with one law tag. [For example, "CUR(EDGE1)" is followed by an edge, which is the law data.] It permits an application to pass an ACIS entity or other class in the form of a law_data class into laws.

Applications should call the virtual remove method instead of the tilde (~) destructor to get rid of a law. This method decrements the use_count, and calls the law destructor if use_count falls to zero. The destructors of laws containing sublaws should call remove on the latter for correct memory management.

See also:

law_data

Constructor and Destructor Index

o unary_data_law(law_data*)

Constructs a unary_data_law.

o ~unary_data_law()

Method Index

o fsub()

This returns the sublaw that is passed into this law.

o id()

Returns a unique ID that may be used to identify a law's class type.

o make_one(law_data*)

Returns a pointer to a law of this type.

Data Member Index

o data

This is a pointer to the data structure used as input to the unary data law.

Constructor and Destructor

Constructs a unary_data_law.

Role: This has a pointer to a sublaw data class passed in as one of its arguments.

Parameters:

in_sub_law

pointer to law data.

Methods

This returns the sublaw that is passed into this law.

Role: Only applications that create new laws that have parts of old laws should use this method. An example of this is the simplifier; the law "abs(x^2)" simplifies to "x^2", where "x^2" is the part of the old law used in the new law. If the sublaw is to be used elsewhere, the add method should called.

Returns a unique ID that may be used to identify a law's class type.

Role: This method should not be called directly by the application. All derived law classes must have this method. The isa, id, and type methods are used to identify a law's class type.

Returns a pointer to a law of this type.

Role: Used by parsing to create an instance of this law. All laws derived from unary_law have a make_one method. This is used by the parser and simplifier and should not be called by the application directly.

Parameters:

in_data

pointer to law data.

Data Members

  protected law_data* data