Matlab/Scipy
http://www.aria.uklinux.net/nurbs.php3
Numpy
http://runten.tripod.com/NURBS/
Functions
The functions currently available in the toolbox are:
Main functions
- 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 multiplicity 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 - Evaluation of NURBS curve or surface.
- nrbextrude - Extrude a NURBS curve along a vector.
- nrbrevolve - Construct surface by revolving a profile.
- nrbruled - Ruled surface between two NURBS curves.
- nrbcoons - Construct Coons bilinearly blended surface patch.
- nrbplot - Plot NURBS curve or surface.
Low level functions - c routines
- 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.
Vector and Transformation Utilities
- vecnorm - Normalisation of Vectors.
- vecmag - Magnitude of 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.
Misc Utilities
- deg2rad - Convert degrees to radians.
- rad2deg - Convert radians to degrees.
