Geometric modeling is central to all CAD/CAM/CAE applications.

"Different applications require different representations: some applications use only simple geometric entities such as lines and arcs; others require sculptured curves and surfaces; manifold solids are often used for mechanical design; solids composed of different materials for 3D modeling and finite element analysis, non-closed objects or objects with internal structures for crash analysis...

Basic geometric objects

Topological models

Topological models are made of a composition of geometric primitives in order to build 3D models from real or abstract objects.

Geometric algorithms

Geometric algorithms are used for creation and modification of geometric objects and solving geometric problems.

Topological algorithms

Open CASCADE Technology provides a wide set of topological algorithms which allow to create and modify topological objects using different construction techniques: low-level algorithms for direct building any topological objects from objects of lower ranking (e.g. a wire from edges...);

• construction of primitives (boxes, prisms, revolutions, extrusions...);
• swept constructions along complex profiles;
• Boolean operations;
• local Boolean operations (such as gluing solids along common faces);
• modification of an initial object by functional features: blending, filleting, different kinds of protrusions and depressions.

-- RobertoBernetti - 10 Mar 2019