- Homepage: https://analysissitus.org
- Follow our blog: https://quaoar.su/blog/
Analysis Situs is an open-source, extendable software that aids in the development of CAD geometric algorithms using Boundary Representation (B-Rep) data structures. The software is integrated with the OpenCascade library, an open-source geometric modeling kernel that provides a diverse set of modeling operators enabling the creation of multipurpose CAD systems and utilities. Analysis Situs provides a foundation for developing geometric modeling algorithms. Furthermore, Analysis Situs offers advanced features for inspecting the geometric and topological structures of existing CAD parts (hence the name "Analysis Situs") that can be imported from any major CAD system.
- Feature recognition and shape interrogation algorithms (drilled holes, fillets, base faces, isolated features and more).
- Attributed Adjacency Graph (https://analysissitus.org/features/features_aag.html).
- Assembly API (https://analysissitus.org/features.html#core-assemblies).
- Advanced modeling algorithms.
- Shape healing.
- Important stability fixes over OpenCascade geometric modeling kernel.
Continue reading at https://analysissitus.org, which is the main volume of documentation for Analysis Situs app and SDK.
Analysis Situs is a cross-platform software that has been tested on Windows and Linux (Ubuntu, Arch, Debian). There is no MacOS support yet. To build from sources, use the following guides:
- Windows: https://analysissitus.org/features/features_build-windows.html
- Linux: https://analysissitus.org/features/features_build-linux.html
The libpacks for Windows builds are located here: https://analysissitus.org/files/libpacks/
Analysis Situs was the previous name for Topology. Henri Poincare published an original work on the subject in 1895, introducing the core notions of this new discipline of mathematics. The topological language has shown to be very helpful in computer-aided design. Many of the academic articles published on the subject used topological formalism to create mathematical models of shapes.
We think Analysis Situs is a hilarious name for software that delves into the complexity of geometric modeling. You load a model to find out what is inside. It can be studied face after face in a CAD-neutral environment. You can think of your model as a collection of surface patches trimmed by contours. You can also modify the software with your own tools because the architecture is quite general (the primary developer uses Analysis Situs on a daily basis).
In the early days of CAD, there existed a system called PADL that helped to transmit digital design technologies from academics to industry. Pioneer scholars such as A. Requicha, who participated in the PADL project, introduced several new seminal concepts to the area (for which Requicha and Voelcker received the Pierre Bezier Award). Analysis Situs has nothing to do with PADL or these excellent researchers. However, there is still a desire for a quick prototyping tool that is freely available to anyone. The ultimate goal is to create an open-source CAD platform that can be customized to solve a wide range of geometric design issues. So there we go.