cpml/cpml-curve.h

   1 /* CPML - Cairo Path Manipulation Library
   2  * Copyright (C) 2008, 2009  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
  30 CAIRO_BEGIN_DECLS
  31
  32 void    cpml_curve_put_pair_at_time     (const CpmlPrimitive    *curve,
  33                                          double                  t,
  34                                          CpmlPair               *pair);
  35 void    cpml_curve_put_pair_at          (const CpmlPrimitive    *curve,
  36                                          double                  pos,
  37                                          CpmlPair               *pair);
  38 void    cpml_curve_put_vector_at_time   (const CpmlPrimitive    *curve,
  39                                          double                  t,
  40                                          CpmlVector             *vector);
  41 void    cpml_curve_put_vector_at        (const CpmlPrimitive    *curve,
  42                                          double                  pos,
  43                                          CpmlVector             *vector);
  44 double  cpml_curve_get_closest_pos      (const CpmlPrimitive    *curve,
  45                                          const CpmlPair         *pair);
  46 int     cpml_curve_put_intersections    (const CpmlPrimitive    *curve,
  47                                          const CpmlPrimitive    *curve2,
  48                                          int                     max,
  49                                          CpmlPair               *dest);
  50 int     cpml_curve_put_intersections_with_arc
  51                                         (const CpmlPrimitive    *curve,
  52                                          const CpmlPrimitive    *arc,
  53                                          int                     max,
  54                                          CpmlPair               *dest);
  55 int     cpml_curve_put_intersections_with_line
  56                                         (const CpmlPrimitive    *curve,
  57                                          const CpmlPrimitive    *line,
  58                                          int                     max,
  59                                          CpmlPair               *dest);
  60 void    cpml_curve_offset               (CpmlPrimitive          *curve,
  61                                          double                  offset);
  62
  63 CAIRO_END_DECLS
  64
  65
  66 #endif /* __CPML_CURVE_H__ */