ABSTRACT
A feature in computer aided design (CAD) software can be defined as a region of a part with some impressive geometric or topological forms. Among several types of features, the most common type of feature is the form feature, which contains both shape information and parametric information. Geometric modeling represents a collection of methods that help the scientists or engineers in the synthesis, representation, and analysis of shape and other geometric information. Geometric modeling is often achieved using advanced software programs such as AutoCAD, Pro/ENGINEER, CATIA, and so on, since these interactive graphics allow users to easily enter, manipulate, modify, and optimize data for the construction of geometric models. Solid modeling provides topological information in addition to the geometrical information, which helps to represent the solid unambiguously. A Boundary representation (B-rep) solid is represented as a volume enclosed by a set of faces along with the topological information that defines the relationships between the faces.
