NAME

Math::JSpline - Native perl extension for multi-dimensional J-Spline curves (open and closed)

SYNOPSIS

use Math::JSpline;
blah blah blah

DESCRIPTION

J-Splines are awesome: they're a class of spline curves that take a shape parameter, s. Setting s=1 yields uniform cubic B-spline curves, s=0 gives four-point subdivision curves, s=0.5 are uniform quintic B-splines - and more. "s" basically governs the "snappiness" of the curve.

Math::JSpline, lets you choose any combination of J-Spline parameters for any number of input arrays, with a range of different starting and ending schemes (eg: open or closed loops). Use it for 2D drawing, 3D graphics, or any other kind of interpolation you might need.

EXPORT

JSpline

EXAMPLE

#!perl -w
use Math::JSpline;
my ($x)=&JSpline(1,0.5,0.5,3,[1,2,3,4]);
print join(" ",@{$x});

returns

1.25 1.375 2 2.5 3 3.625 3.75 2.5 1.25

2D Demo

The example source included in this distro produces the following output (see also: the js.pdf below)

SEE ALSO

http://faculty.cs.tamu.edu/schaefer/research/js.pdf

AUTHOR

Chris Drake, <cdrake@cpan.org>

COPYRIGHT AND LICENSE

Copyright (C) 2013 by Chris Drake

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.10.1 or, at your option, any later version of Perl 5 you may have available.