--- a/src/xs_curve.h	Wed Feb 21 15:23:02 2007 +0000
+++ b/src/xs_curve.h	Fri Feb 23 05:10:00 2007 +0000
@@ -8,7 +8,8 @@
 extern "C" {
 #endif
 
-
+/* Macros for type-classing this GtkWidget/object
+ */
 #define XS_TYPE_CURVE			(xs_curve_get_type())
 #define XS_CURVE(obj)			(GTK_CHECK_CAST ((obj), XS_TYPE_CURVE, XSCurve))
 #define XS_CURVE_CLASS(luokka)		(GTK_CHECK_CLASS_CAST ((luokka), XS_TYPE_CURVE, XSCurveClass))
@@ -16,6 +17,8 @@
 #define XS_IS_CURVE_CLASS(luokka)	(GTK_CHECK_CLASS_TYPE ((luokka), XS_TYPE_CURVE))
 
 
+/* Structures
+ */
 typedef struct _XSCurve	XSCurve;
 typedef struct _XSCurveClass	XSCurveClass;
 
@@ -23,6 +26,9 @@
 	gfloat x,y;
 } t_xs_point;
 
+typedef struct {
+	gint x, y;
+} t_xs_int_point;
 
 struct _XSCurve {
 	GtkDrawingArea graph;
@@ -38,7 +44,7 @@
 	gint last;
 
 	/* control points */
-	gint num_ctlpoints;	/* number of control points */
+	gint nctlpoints;	/* number of control points */
 	t_xs_point *ctlpoints;	/* array of control points */
 };
 
@@ -51,8 +57,12 @@
 GtkWidget*	xs_curve_new		(void);
 void		xs_curve_reset		(XSCurve *curve);
 void		xs_curve_set_range	(XSCurve *curve,
-					 gfloat min_x, gfloat max_x,
-					 gfloat min_y, gfloat max_y);
+					 gfloat min_x, gfloat min_y,
+					 gfloat max_x, gfloat max_y);
+gboolean	xs_curve_realloc_data	(XSCurve *curve, gint npoints);
+void		xs_curve_get_data	(XSCurve *curve, t_xs_point ***points, gint **npoints);
+gboolean	xs_curve_set_points	(XSCurve *curve, t_xs_int_point *points, gint npoints);
+gboolean	xs_curve_get_points	(XSCurve *curve, t_xs_int_point **points, gint *npoints);
 
 #ifdef __cplusplus
 }