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/*
* This file is part of din.
*
* din is copyright (c) 2006 - 2012 S Jagannathan <jag@dinisnoise.org>
* For more information, please visit http://dinisnoise.org
*
* din 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.
*
* din 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 din. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef _MULTICURVE
#define _MULTICURVE
#include <string>
#include <fstream>
#include <vector>
#include "point.h"
#include "curve.h"
typedef std::vector< point<float> > points_array;
struct multi_curve {
// multiple bezier curves
//
std::string name; // name
float r, g, b; // color
// curve info
points_array vertices;
points_array left_tangents;
points_array right_tangents;
std::vector<curve> curv; // bezier curves of this multi_curve.
std::vector<int> eval; // eval status of each bezier curve
float resolution; // resolution of all bezier curves
multi_curve ();
multi_curve (const std::string& filename);
multi_curve (const multi_curve& src);
multi_curve& operator= (const multi_curve& src);
void copy (const multi_curve& src);
void clear (int all = 1);
int num_vertices ();
void add_vertex (float x, float y);
void add_left_tangent (float x, float y);
void add_right_tangent (float x, float y);
bool set_vertex (int i, float x, float y, int carry_tangents = 0);
bool set_left_tangent (int i, float x, float y);
bool set_right_tangent (int i, float x, float y);
void get_vertex (int i, float& x, float& y);
void get_left_tangent (int i, float& x, float& y);
void get_right_tangent (int i, float& x, float& y);
bool insert (float x, float y, float tx, float ty);
bool remove (int i);
void set_resolution (float d);
float get_resolution ();
void set_color (); // random color
void set_color (float rr, float gg, float bb);
void get_color (float& rr, float& gg, float& bb) { rr = r; gg = g; bb = b;}
void force_eval ();
void evaluate ();
void load (const std::string& filename);
void load (std::ifstream& file);
void save (const std::string& filename);
void save (std::ofstream& file);
};
void create_polyline (multi_curve& crv, const points_array& pts);
void convert2_catmull_rom (multi_curve& crv, float tangent_size);
void convert2_polyline (multi_curve& crv);
multi_curve* check_list (multi_curve** lst, int n, const std::string& name);
multi_curve* get_curve (const std::string& name);
#endif
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