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/*
* Copyright © 2023 Behdad Esfahbod
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#ifndef HB_OUTLINE_HH
#define HB_OUTLINE_HH
#include "hb.hh"
#include "hb-draw.hh"
struct hb_outline_point_t
{
enum class type_t
{
MOVE_TO,
LINE_TO,
QUADRATIC_TO,
CUBIC_TO,
};
hb_outline_point_t (float x, float y, type_t type) :
x (x), y (y), type (type) {}
float x, y;
type_t type;
};
struct hb_outline_vector_t
{
float normalize_len ()
{
float len = hypotf (x, y);
if (len)
{
x /= len;
y /= len;
}
return len;
}
float x, y;
};
struct hb_outline_t
{
void reset () { points.shrink (0, false); contours.resize (0); }
HB_INTERNAL void replay (hb_draw_funcs_t *pen, void *pen_data) const;
HB_INTERNAL float control_area () const;
HB_INTERNAL void embolden (float x_strength, float y_strength,
float x_shift, float y_shift);
hb_vector_t<hb_outline_point_t> points;
hb_vector_t<unsigned> contours;
};
HB_INTERNAL hb_draw_funcs_t *
hb_outline_recording_pen_get_funcs ();
#endif /* HB_OUTLINE_HH */