NURBS Toolbox by D.M. Spink

NURBS Toolbox by D.M. Spink re-uploaded. The previous link has broken.

NURBS Toolbox official site is
http://www.aria.uklinux.net/nurbs.php3

% NURBS Toolbox.
% Version 1.0
%
% demos - NURBS demonstrations
%
% nrbmak - Construct a NURBS from control points and knots.
% nrbtform - Applying scaling, translation or rotation operators.
% nrbkntins - Knot insertion/refinement.
% nrbdegelev - Degree elevation.
% nrbderiv - NURBS representation of the derivative.
% nrbdeval - Evaluation of the NURBS derivative.
% nrbkntmult - Find the multiplilicity of a knot vector.
% nrbreverse - Reverse evaluation direction of the NURBS.
% nrbtransp - Swap U and V for NURBS surface.
% nrbline - Construct a straight line.
% nrbcirc - Construct a circular arc.
% nrbrect - Construct a rectangle.
% nrb4surf - Surface defined by 4 corner points.
% nrbeval - Evalution of NURBS curve or surface.
% nrbextrude - Extrude a NURBS curve along a vector.
% nrbrevolve - Construct surface by revolving a profile.
% nrbruled - Ruled surface between twp NURBS curves.
% nrbcoons - Construct Coons bilinearly blended surface patch.
% nrbplot - Plot NURBS curve or surface.
%
% bspeval - Evaluate a univariate B-Spline.
% bspderiv - B-Spline representation of the derivative
% bspkntins - Insert a knot or knots into a univariate B-Spline.
% bspdegelev - Degree elevation of a univariate B-Spline.
%
% vecnorm - Normalise the vectors.
% vecmag - Magnitaude of the vectors.
% vecmag2 - Squared Magnitude of the vectors.
% vecangle - Alternative to atan2 (0 <= angle <= 2*pi)
% vecdot - Dot product of two vectors.
% veccross - Cross product of two vectors.
% vecrotx - Rotation matrix around the x-axis.
% vecroty - Rotation matrix around the y-axis.
% vecrotz - Rotation matrix around the z-axis.
% vecscale - Scaling matrix.
% vectrans - Translation matrix.
%
% deg2rad - Convert degrees to radians.
% rad2deg - Convert radians to degrees.