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ACIS is written in
C++ and consists of a set of
C++ functions and classes (including data and member functions, or
methods). A developer uses these functions and classes to create an end user 3D modeling application. This chapter describes how
ACIS uses features of
C++.
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ACIS is a solid modeler, but wireframe and surface models may also be represented in
ACIS.
ACIS integrates wireframe, surface, and solid modeling by allowing these alternative model representations to coexist naturally in a unified data structure, which is implemented as a hierarchy of
C++ classes.
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ACIS utilizes key features of
C++, such as encapsulation, overloading, etc. to create a modular and maintainable interface. The API function interface remains stable from release to release, while the class interface may change.
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The key aspects of
C++ that
ACIS takes advantage of are:
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Data encapsulation
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Overloading class constructors
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Copying objects
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Overloading class methods and operators
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Overloading functions
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