douglas_peucker.h
/**********************************************************
*
* mp3splt-gtk -- utility based on mp3splt,
* for mp3/ogg splitting without decoding
*
* Copyright (c) 2005-2012 Alexandru Munteanu - m@ioalex.net
*
* http://mp3splt.sourceforge.net/
*
*********************************************************/
/**********************************************************
*
* 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.
*
*********************************************************/
#ifndef DOUGLAS_PEUCKER_H
#define DOUGLAS_PEUCKER_H
#include "external_includes.h"
#include "ui_types.h"
typedef struct {
gdouble distance;
gint index;
} distance_and_index;
typedef struct {
GdkPoint point;
gint index;
} douglas_point;
GPtrArray *splt_douglas_peucker(GArray *gdk_points, void (*callback)(ui_state *ui),
ui_state *ui, gdouble threshold_to_discard_points, ...);
void splt_douglas_peucker_free(GPtrArray *douglas_peucker_ptr_array);
//for unit tests
gdouble splt_find_distance(GdkPoint first, GdkPoint second);
gdouble splt_find_perpendicular_distance(GdkPoint point,
GdkPoint segment_begin_point, GdkPoint segment_end_point);
distance_and_index *splt_find_point_with_maximum_distance(GArray *douglas_points,
GdkPoint first_point, GdkPoint last_point);
#endif