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SMLib™

TSNLib™

GSNLib™

NLib™

VSLib™

SDLib™

PolyMLib™

Data Translators

NEWSLETTERS:

Solid Modeling Solutions is pleased to announce TSNLib to complete the suite of geometry kernels. TSNLib consists of all of the trimmed surface capabilities now in SMLib, plus the GSNLib features previously announced. The diagram below illustrates the nested relationship of the four products: SMLib, TSNLib, GSNLib, and NLib.

NLib™ - an advanced geometric modeling kernel based on NURBS curves and surfaces.

GSNLib™ - an advanced geometric solver kernel based on NLib with curve/curve and surface/surface intersection capabilities.

TSNLib™ - an object-oriented software toolkit which provides a set of objects and corresponding methods to create, edit, query, and analyze NURBS based trimmed surface representations.

SMLib™ - an advanced geometric modeling kernel based on NURBS curves and surfaces combined with a fully functional nonmanifold topological structure and solid modeling functionality.

Data translators - NURBS-based geometry translator libraries, with interfaces for the NLib, GSNLib, TSNLib, and SMLib family of products, including IGES, STEP, VDAFS, SAT, and OpenNURBS capabilities.

TSNLib is a new offering from SMS representing a proper subset of existing SMLib capabilities at a reduced price; designed for applications that do not require the Boolean operation that is basic to solid modeling. More details can be found on the SMS website at www.smlib.com/tsnlib.html, by contacting Robert Blomgren, VP of R&D, Solid Modeling Solutions, at (206) 463-1417, or by sending an email to sales@smlib.com.

Solid Modeling Solutions is pleased to announce the availability of SMLib 5.0 and NLib 8.0. Some of the new SMLib features include:

• Improvements to the treatment of analytic curves and surfaces.
• Improved access from IwBSplineCurve and IwBSpline surface into Nlib routines which extends the functionality of these classes, without having to manually build the interface each time a user wants to access an Nlib function whichs not a method of the 'Iw' class
• An extensive list of new geometry routines
• Trimmed surfaces are now a mature and very stable piece of software as evidenced by the fact that we have been able to build very advanced complex functionality such as Booleans, Filleting, and Shelling
• Extensive modifications to our Fillet routines including improved handling of large radius cases, and a more robust roll-over case with several new corner cases
• An extensive list of bug-fixes and new routines with Trimmed Surfaces Functionality
• Substantially improved documentation in a fully linked HTML format, allowing the programmer to more-easily understand the source code, and write new programs using SMLib

Some of the new NLib features include:

• New routines which support research and implementation in the area of fitting untrimmed surface networks. That is, given point and possibly tangent data, and a segmentation into 4-sided regions, a boundary curve network is fit, and then patch surfaces are fit into the boundaries, mostly using Coons techniques. These techniques are applicable to many problems including solving problems arising from reverse engineering, a complex manufacturing design problem, and a shape optimization problem.
• Approximation of specific surface types with non-rational B-splines, e.g.: surface of revolution, sphere, torus, cone, and cylinder
• New fitting routines and new shaping tools for curves and surfaces
• Substantially improved documentation in a fully linked HTML format, allowing the programmer to more-easily understand the source code, and write new programs using NLib

The new SMS website is now up and running. With a more professional look and feel, it provides up-to-date information on SMS and our products and services. Visit the SMS website at www.smlib.com.

From the staff of Solid Modeling Solutions