Current version is LGS 2D 2.1

The main goal of the current release is to improve of solver quality, i.e. such characteristics as success rate, performance and naturality of obtained solutions, rather than add a new functionality. Internal solver architecture is significantly improved to achieve this objective. New powerful decomposition techniques were presented, which improves performance up to 2.5 times over the previous version. A natural behavior technology is implemented using those techniques. Refer to the naturality improvement clip for the details.

LGS 2.1 introduces a new feature linking help parameters of curve constraints to variables in the same way as the parameter of dimensional constraints. Those parameters can now be used in engineering equations defined by the user. As an example, several objects can be tangent to a curve at the same point (that is not guaranteed when using coincident constraints). A short clip demonstrates this feature.

Important news is that 2.1 version LGS solver is available in both 32-bit and 64-bit versions for Windows and Linux platforms. With the new LGS version CAD/CAM/CAE software developers and their customers can exploit all benefits of 64-bit technology.

Several API changes introduced to make LGS interface more consistent. Several minor bugs, reported by customers are fixed.

For the full list of changes see Release Status page.

About LGS 2D

The LGS 2D geometric solver is a computational module engineered to support two-dimensional parametric design in CAD and computer graphics systems, as well as many other applications that require parametric connections or constraints to be set between geometrical objects. LGS 2D incorporates the latest technologies in programming, computational mathematics and computer algebra, and is based on a highly efficient kernel. This stability and performance in turn allows additional powerful functions related to geometrical objects constraints to be built upon the kernel and supported in a wide range of systems.

Following the merger of the CAD giant UGS PLM Solutions and the English company D-Cubed, a well known producer of DCM solvers, and, LEDAS remains the only independent supplier of competitive parametric design solvers worldwide.

Parametric design is present in many modern CAD systems. High-end CAD systems have for years incorporated parametric design in drawing modules, while recently small and medium class CAD programs have also recognized its value. Additionally, the fundamental precepts of parametric design open up a wide range of possibilities for the CAD user to impose constraints on geometric objects and incorporate them into a wide range of applications. Consider graphic editing programs. From the simplest vector editors to highly sophisticated two dimensional modeling packets, implementing an array of constrained variables in place of rigidly connected image elements can greatly simplify the designer's work. This is equally true during both the creation and editing periods.

Further, accounting for geometric constraints has demonstrated utility in certain visualization systems where data exchange between vector applications takes place. Possible examples include the interactive systems in automobiles or in the real-estate trade market.