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/* libgnomecanvas/gnome-canvas-curve.h: GnomeCanvas item for constrained spline curves
*
* Copyright (C) 2003 Paul Davis <pbd@op.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#ifndef __GNOME_CANVAS_CURVE_H__
#define __GNOME_CANVAS_CURVE_H__
#include <libgnomecanvas/libgnomecanvas.h>
G_BEGIN_DECLS
/* Wave viewer item for canvas.
*/
#define GNOME_CANVAS_TYPE_CANVAS_CURVE (gnome_canvas_curve_get_type ())
#define GNOME_CANVAS_CURVE(obj) (GTK_CHECK_CAST ((obj), GNOME_CANVAS_TYPE_CANVAS_CURVE, GnomeCanvasCurve))
#define GNOME_CANVAS_CURVE_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GNOME_CANVAS_TYPE_CANVAS_CURVE, GnomeCanvasCurveClass))
#define GNOME_CANVAS_IS_CANVAS_CURVE(obj) (GTK_CHECK_TYPE ((obj), GNOME_CANVAS_TYPE_CANVAS_CURVE))
#define GNOME_CANVAS_IS_CANVAS_CURVE_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GNOME_CANVAS_TYPE_CANVAS_CURVE))
typedef struct _GnomeCanvasCurve GnomeCanvasCurve;
typedef struct _GnomeCanvasCurveClass GnomeCanvasCurveClass;
struct _GnomeCanvasCurve
{
GnomeCanvasItem item;
double x1, y1, x2, y2;
void* curve_arg;
float* vector;
size_t veclen;
uint32_t color;
/* cached values set during update/used during render */
unsigned char r, b, g, a;
guint32 bbox_ulx, bbox_uly;
guint32 bbox_lrx, bbox_lry;
};
struct _GnomeCanvasCurveClass {
GnomeCanvasItemClass parent_class;
};
GtkType gnome_canvas_curve_get_type (void);
G_END_DECLS
#endif /* __GNOME_CANVAS_CURVE_H__ */
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