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// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* C implementation of third-order polynomial spirals.
*//*
* Authors: see git history
* Raph Levien
* Johan Engelen
*
* Copyright (C) 2018 Authors
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef INKSCAPE_SPIRO_H
#define INKSCAPE_SPIRO_H
#include "live_effects/spiro-converters.h"
#include <2geom/forward.h>
class SPCurve;
namespace Spiro {
struct spiro_cp {
double x;
double y;
char ty;
};
void spiro_run(const spiro_cp *src, int src_len, SPCurve &curve);
void spiro_run(const spiro_cp *src, int src_len, Geom::Path &path);
/* the following methods are only for expert use: */
typedef struct spiro_seg_s spiro_seg;
spiro_seg * run_spiro(const spiro_cp *src, int n);
void free_spiro(spiro_seg *s);
void spiro_to_otherpath(const spiro_seg *s, int n, ConverterBase &bc);
double get_knot_th(const spiro_seg *s, int i);
} // namespace Spiro
#endif // INKSCAPE_SPIRO_H
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