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A 3D model displayed in a CAD application may look like a single object, but two very different software systems can be responsible for it. One system defines the engineering geometry and performs mod
A CAD kernel is easier to understand when viewed as a set of cooperating subsystems rather than a single library that “creates 3D models.” The architecture typically separates mathematical geometry, t
Adding 3D modeling to an engineering application involves much more than placing a viewport beside existing business logic. The software needs a representation of curves, surfaces and solids, operatio
Many of the commands that define everyday 3D CAD workflows are built from a relatively small set of modeling operations. Extrusion turns a planar profile into a body, revolution creates rotational geo
Boundary representation, usually shortened to B-Rep, is one of the core concepts developers encounter when working with 3D CAD systems. A solid that appears visually simple may consist internally of m
A CAD command may look simple from the outside. The user selects a closed sketch, clicks Extrude, enters a distance, and receives a solid body. Inside the software, however, that action triggers sever
