1 files changed, 60 insertions, 0 deletions
diff --git a/app/cornu/spiroentrypoints.c b/app/cornu/spiroentrypoints.c
new file mode 100644
index 0000000..0128115
--- /dev/null
+++ b/app/cornu/spiroentrypoints.c
@@ -0,0 +1,60 @@
+/*
+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);
+}