Bricsys Announces Version 8 of Bricsys LGS 2D & 3D Component Technology

Constraint Solvers Allow Developers of CAD/CAM/CAE Applications to Efficiently SolveGeometric and Dimensional Constraints

Gent, Belgium, and Merrimack, NH, USA - July 9, 2013 – Bricsys, a global provider of dwgengineering design software brought to market under the BricsCAD® brand, today released V8 ofthe Bricsys LGS component technology, a set of computational software libraries used bydevelopers of CAD, CAM, CAE applications for implementation of geometric and dimensionalconstraint support.

Originally acquired from LEDAS, continuous improvement of the LGS 2D & 3D componenttechnology is now led by the Bricsys development team in Novosibirsk, Russia. The technology isavailable for integration by CAD/CAM/CAE software developers worldwide, and has been embeddedin the BricsCADsoftware itself since V12. As such it is used by thousands of BricsCAD users forparametric drawing, variational direct modeling, assembly design, and kinematic simulation.

To simplify development and support, Bricsys has unified the release cycles of LGS 2D and 3D, andnow uses the same version number for both components. The latest release, version 8.0,incorporates significant improvements in performance, solvability and naturalness of solutions.

In particular, LGS 2D V8.0 provides:
• better diagnostics for geometric objects and constraints
• a more natural solution for where a line is tangent to a spline at its endpoint
• improved auto-constraining functionality for segments (available as part of the LGS Profilesextension module)
• bug fixes in the equation simplification method

LGS 3D V8.0 delivers several improvements in the pattern-based problem decomposition methods,which are essential for natural behavior of the solver. In particular, cases with tangency constraintsbetween cylinders, spheres, and planes are now solved more naturally. V8 also solves severalproblems submitted as support requests by application development customers

“Constraints became a de facto standard for CAD applications a long time ago,” said DmitryUshakov, CEO Bricsys Technologies Russia. “While we guarantee the high quality of our LGS solversfor traditional applications, including parametric drawing/sketching in 2D and assemblydesign/kinematic simulation in 3D, our main focus is now on a new and promising application ofconstraints – direct modeling. With variational direct modeling users can benefit from the best of two worlds: the power of parametric history-based modeling and the freedom of direct modeling.LGS solvers can efficiently work in combination with any solid modeling kernel available on thecomponent market.”

About Bricsys LGS Component Technology
Bricsys LGS 2D and 3D Constraint Solvers are state-of-the-art computational engines to helpdevelopers of engineering software implement advanced parametric functions in their applications.Users of these applications can rely on geometric and dimensional constraints, which are solvedsimultaneously forcing the change of geometry according to design intent.

Bricsys LGS 2D and 3D Solvers are available as binary libraries for the Windows (32- and 64-bit), MacOS X, and Linux platforms. The C Application Programming Interface allows easy integration of LGS2D/3D into applications written in C/C++/C#/Java and many other programming languages. For moreinformation on the Bricsys LGS 2D/3D component technology, visit

About Bricsys
Bricsys® is a global provider of dwg engineering design software brought to market under theBricsCAD® brand. With relentless commitment to the success of the BricsCAD community, Bricsys isfocused on providing an industrial strength CAD software platform and industry leading support at acompelling price to customers in the AEC, GIS, civil engineering, process and power, and mechanicalCAD markets. Founded in 2002, Bricsys is a founding member of the Open Design Alliance. Foradditional information about Bricsys, visit


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