src/cpml/cpml-curve.h

   1 /* CPML - Cairo Path Manipulation Library
   2  * Copyright (C) 2007-2021  Nicola Fontana <ntd at entidi.it>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301, USA.
  18  */
  19
  20
  21 #if !defined(__CPML_H__)
  22 #error "Only <cpml/cpml.h> can be included directly."
  23 #endif
  24
  25
  26 #ifndef __CPML_CURVE_H__
  27 #define __CPML_CURVE_H__
  28
  29 typedef enum {
  30     CPML_CURVE_OFFSET_ALGORITHM_NONE,
  31     CPML_CURVE_OFFSET_ALGORITHM_DEFAULT,
  32     CPML_CURVE_OFFSET_ALGORITHM_GEOMETRICAL,
  33     CPML_CURVE_OFFSET_ALGORITHM_HANDCRAFT,
  34     CPML_CURVE_OFFSET_ALGORITHM_BAIOCA,
  35 } CpmlCurveOffsetAlgorithm;
  36
  37 CAIRO_BEGIN_DECLS
  38
  39 CpmlCurveOffsetAlgorithm
  40         cpml_curve_offset_algorithm     (CpmlCurveOffsetAlgorithm new_algorithm);
  41 void    cpml_curve_put_pair_at_time     (const CpmlPrimitive     *curve,
  42                                          double                   t,
  43                                          CpmlPair                *pair);
  44 void    cpml_curve_put_vector_at_time   (const CpmlPrimitive     *curve,
  45                                          double                   t,
  46                                          CpmlVector              *vector);
  47 void    cpml_curve_put_offset_at_time   (const CpmlPrimitive     *curve,
  48                                          double                   t,
  49                                          double                   offset,
  50                                          CpmlPair                *pair);
  51
  52 CAIRO_END_DECLS
  53
  54
  55 #endif /* __CPML_CURVE_H__ */