#ifndef SP_CURVE_H
#define SP_CURVE_H

/*
 * This is mostly like GnomeCanvasBpathDef, but with added functionality
 * and shorter name
 *
 */

#include <glib.h>
#include <libart_lgpl/art_bpath.h>

typedef struct _SPCurve SPCurve;

struct _SPCurve {
	gint refcount;
	ArtBpath * bpath;
	gint end;		/* ART_END position */
	gint length;		/* Num allocated Bpaths */
	gint substart;		/* subpath start */
	gdouble x, y;		/* previous moveto position */
	guint sbpath : 1;	/* Bpath is static */
	guint hascpt : 1;	/* Currentpoint is defined */
	guint posset : 1;	/* Previous was moveto */
	guint moving : 1;	/* Bpath end is moving */
	guint closed : 1;	/* All subpaths are closed */
};

/* Constructors */

SPCurve * sp_curve_new (void);
SPCurve * sp_curve_new_sized (gint length);
SPCurve * sp_curve_new_from_bpath (ArtBpath * bpath);
SPCurve * sp_curve_new_from_static_bpath (ArtBpath * bpath);
SPCurve * sp_curve_new_from_foreign_bpath (ArtBpath * bpath);

SPCurve *sp_curve_ref (SPCurve *curve);
SPCurve *sp_curve_unref (SPCurve *curve);

void sp_curve_finish (SPCurve * curve);
void sp_curve_ensure_space (SPCurve * curve, gint space);
SPCurve * sp_curve_copy (SPCurve * curve);
SPCurve * sp_curve_concat (const GSList * list);
GSList * sp_curve_split (SPCurve * curve);

/* Methods */

void sp_curve_reset (SPCurve * curve);

void sp_curve_moveto (SPCurve * curve, gdouble x, gdouble y);
void sp_curve_lineto (SPCurve * curve, gdouble x, gdouble y);
void sp_curve_lineto_moving (SPCurve * curve, gdouble x, gdouble y);
void sp_curve_curveto (SPCurve * curve, gdouble x0, gdouble y0, gdouble x1, gdouble y1, gdouble x2, gdouble y2);
void sp_curve_closepath (SPCurve * curve);
void sp_curve_closepath_current (SPCurve * curve);

gboolean sp_curve_empty (SPCurve * curve);
ArtBpath * sp_curve_last_bpath (SPCurve * curve);
ArtBpath * sp_curve_first_bpath (SPCurve * curve);

void sp_curve_append (SPCurve *curve, SPCurve *curve2, gboolean use_lineto);
SPCurve *sp_curve_reverse (SPCurve *curve);


#endif