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/*
libspiro - conversion between spiro control points and bezier's
Copyright (C) 2007 Raph Levien
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
/* Interface routines to Raph's spiro package. */
#include "spiroentrypoints.h"
void
SpiroCPsToBezier(spiro_cp *spiros,int n,int isclosed,bezctx *bc)
{
spiro_seg *s;
if ( n<1 )
return;
if ( !isclosed ) {
char oldty_start = spiros[0].ty;
char oldty_end = spiros[n-1].ty;
spiros[0].ty = '{';
spiros[n-1].ty = '}';
s = run_spiro(spiros,n);
spiros[n-1].ty = oldty_end;
spiros[0].ty = oldty_start;
} else
s = run_spiro(spiros,n);
spiro_to_bpath(s,n,bc);
free_spiro(s);
}
void
TaggedSpiroCPsToBezier(spiro_cp *spiros,bezctx *bc)
{
spiro_seg *s;
int n;
for ( n=0; spiros[n].ty!='z' && spiros[n].ty!='}'; ++n );
if ( spiros[n].ty == '}' ) ++n;
if ( n<1 )
return;
s = run_spiro(spiros,n);
spiro_to_bpath(s,n,bc);
free_spiro(s);
}
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