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60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
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/*
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* Authored By Tomas Frydrych <tf@openedhand.com>
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*
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* Copyright (C) 2006, 2007 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <glib.h>
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G_BEGIN_DECLS
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/* This is used in meta_bezier_advance to represent the full
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length of the bezier curve. Anything less than that represents a
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fraction of the length */
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#define META_BEZIER_MAX_LENGTH (1 << 18)
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typedef struct _MetaBezier MetaBezier;
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typedef struct _MetaBezierKnot MetaBezierKnot;
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struct _MetaBezierKnot
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{
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gint x;
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gint y;
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};
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MetaBezier *meta_bezier_new (void);
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void meta_bezier_free (MetaBezier *b);
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void meta_bezier_advance (const MetaBezier *b,
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gint L,
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MetaBezierKnot *knot);
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void meta_bezier_init (MetaBezier *b,
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gint x_0, gint y_0,
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gint x_1, gint y_1,
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gint x_2, gint y_2,
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gint x_3, gint y_3);
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guint meta_bezier_get_length (const MetaBezier *b);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC (MetaBezier, meta_bezier_free);
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G_END_DECLS
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