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Non-uniform rational basis spline (NURBS) is a mathematical model using basis splines (B-splines) that is commonly used in computer graphics for representing curves and surfaces. It offers great flexibility and precision for handling both analytic (defined by common mathematical formulae ) and modeled shapes .
NURBS curve – polynomial curve defined in homogeneous coordinates (blue) and its projection on plane – rational curve (red) In computer aided design, computer aided manufacturing, and computer graphics, a powerful extension of B-splines is non-uniform rational B-splines (NURBS). NURBS are essentially B-splines in homogeneous coordinates ...
The development of non-uniform rational B-spline (NURBS) originated with seminal work at Boeing and Structural Dynamics Research Corporation in the 1980s and 1990s, a company that led in mechanical computer-aided engineering (CAE) in those years. [1]
Computer-aided design systems often use an extended concept of a spline known as a Nonuniform rational B-spline (NURBS). If sampled data from a function or a physical object is available, spline interpolation is an approach to creating a spline that approximates that data.
In the mathematical subfield of numerical analysis, de Boor's algorithm [1] is a polynomial-time and numerically stable algorithm for evaluating spline curves in B-spline form. It is a generalization of de Casteljau's algorithm for Bézier curves.
While developed for Inkscape it is a library that can be used from any application. It provides support for basic geometric algebra, paths, distortions, Boolean operations, plotting implicit functions, non-uniform rational B-spline (NURBS) and more. 2Geom is free software released under LGPL 2.1 or MPL 1.1. [22] [23]
EDSAC—Electronic Delay Storage Automatic Calculator; ... NUMA—Non-Uniform Memory Access; NURBS—Non-Uniform Rational ... PCRE—Perl Compatible Regular Expressions;
Isogeometric analysis is a computational approach that offers the possibility of integrating finite element analysis (FEA) into conventional NURBS-based CAD design tools. . Currently, it is necessary to convert data between CAD and FEA packages to analyse new designs during development, a difficult task since the two computational geometric approaches are diffe