NAME

       libspiro - A clothoid to bezier spline converter

SYNOPSIS

       #include <spiroentrypoints.h> and then compile and link with -lspiro

DESCRIPTION

       Spiro library for curve design which simplifies drawing of beautiful curves.

       libspiro  takes  an array of spiro control points which can be easier for an artist to create and modify,
       and then converts these into a series of bezier splines which can then be used in the myriad of ways  the
       world has come to use beziers.

       spiroentrypoints.h  has technical information on how to connect with libspiro and further information and
       example code can be found at http://github.com/fontforge/libspiro

REPORTING PROBLEMS

       Before reporting a problem, please check the libspiro web site to verify that you have the latest version
       of libspiro

       Great care was taken to maintain  backwards  compatibility  so  it  is  recommended  to  upgrade  if  you
       experience problems with earlier libspiro versions.

LIBSPIRO LICENSE

       libspiro  originated  from spiro code (in 2007) found in ppedit which is a pattern plate editor for Spiro
       splines.  ppedit was/is Copyright (C) 2007 Raph Levien. GNU GPL version 2 or higher.   ppedit  was  later
       relicensed  also  as  Apache-2  MIT  code  in May of 2019.  This relicensing is fine since all ppedit was
       written by Raph Levien in 2007. Copyright allows for this.  Unfortunately, this  re-licensing  of  ppedit
       has  caused  some confusion in assuming that this relicensing also applies to libspiro which is not valid
       and does not apply.

       libspiro was based on ppedit spiro code from 2007 (which was GNU GPL2 version 2 or higher) and built into
       a usable library at http://libspiro.sourceforge.net/ Copyright (C) 2007 George Williams. GNU GPL  version
       2 or higher.  This license also applies to the included Java files which have been forked into javascript
       and typeset files seen elsewhere.

       libspiro  was  later  picked  up  in  2013  and  continued  with  further development and improvements at
       http://github.com/fontforge/libspiro

       libspiro is now Copyright (C) 2013... as GNU GPL version 3 or higher.

AUTHORS

       Please see AUTHORS file for everyone involved in creating and improving this libspiro

       Further details (on why and what) can also be seen in git history as well as  the  Changelog  and  README
       files.

                                                   2022-Jul-22                                          SPIRO(3)