#ifndef _SPIROENTRYPOINTS_H

# define _SPIROENTRYPOINTS_H

# include "bezctx_intf.h"

# include "spiro.h"

    /* Possible values of the "ty" field. */

#define SPIRO_CORNER		'v'

#define SPIRO_G4		'o'

#define SPIRO_G2		'c'

#define SPIRO_LEFT		'['

#define SPIRO_RIGHT		']'

    /* For a closed contour add an extra cp with a ty set to */

#define SPIRO_END		'z'

    /* For an open contour the first cp must have a ty set to*/

#define SPIRO_OPEN_CONTOUR	'{'

    /* For an open contour the last cp must have a ty set to */

#define SPIRO_END_OPEN_CONTOUR	'}'

/* These 2 functions are kept for backwards compatibility for older */

/* programs. Please use the functions listed afterwards that return */

/* success/failure replies when done.				    */

extern void TaggedSpiroCPsToBezier(spiro_cp *spiros,bezctx *bc);

extern void SpiroCPsToBezier(spiro_cp *spiros,int n,int isclosed,bezctx *bc);

/* These functions are available in libspiro-0.2.20130930 or higher */

/* The two functions below return 1 upon success and 0 upon failure */

/* The spiros array should indicate it's own end... So              */

/* Open contours must have the ty field of the first cp set to '{'  */

/*               and have the ty field of the last cp set to '}'    */

/* Closed contours must have an extra cp at the end whose ty is 'z' */

/*               the x&y values of this extra cp are ignored        */

extern int TaggedSpiroCPsToBezier0(spiro_cp *spiros,bezctx *bc);

/* The first argument is an array of spiro control points.          */

/* Open contours do not need to start with '{', nor to end with '}' */

/* Close contours do not need to end with 'z'                       */

extern int SpiroCPsToBezier0(spiro_cp *spiros,int n,int isclosed,bezctx *bc);

/* These functions are available in libspiro-0.3.20150131 or higher */

/* If you can't use TaggedSpiroCPsToBezier0(), SpiroCPsToBezier0(), */

/* these functions are enhanced versions of the original functions, */

/* where spiro success/failure replies are passd back through *done */

extern void TaggedSpiroCPsToBezier1(spiro_cp *spiros,bezctx *bc,int *done);

extern void SpiroCPsToBezier1(spiro_cp *spiros,int n,int isclosed,bezctx *bc,int *done);

#endif