Chapter 6 B

代码说明：

Chapter 6 B-spline Surfaces basis.c tbasis.c Calculates the B-spline basis functions. bsplsurf.c tbsurf.c Calculates a B-spline surface. bspsurfu.c tbsurfu.c Calculates a periodic B-spline surface. dbasis.c tdbasis.c Calculates the B-spline basis functions and derivatives. dbsurf.c tdbsurf.c Calculates a B-spline surface and derivatives. knot.c tknot.c Calculates an open knot vector. knotu.c tknotu.c Calculates a periodic knot vector. rdpnp.c Support routine - inputs PNP (polygon net point) file. chap6all.zip ZIP file for all of Chapter 6. chap6all.tar.gz UNIX tar file for all of Chapter 6. -Chapter 6 B-spline Surfaces basis.c tbasis.c Calculates the B-spline basis functions. bsplsurf.c tbsurf.c Calculates a B-spline surface. bspsurfu.c tbsurfu.c Calculates a periodic B-spline surface. dbasis.c tdbasis.c Calculates the B-spline basis functions and derivatives. dbsurf.c tdbsurf.c Calculates a B-spline surface and derivatives. kn