cpml/cpml-arc.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_ARC_H__
  27 #define __CPML_ARC_H__
  28
  29
  30 CAIRO_BEGIN_DECLS
  31
  32 cairo_bool_t
  33         cpml_arc_info                   (const CpmlPrimitive    *arc,
  34                                          CpmlPair               *center,
  35                                          double                 *r,
  36                                          double                 *start,
  37                                          double                 *end);
  38 void    cpml_arc_put_pair_at            (const CpmlPrimitive    *arc,
  39                                          double                  pos,
  40                                          CpmlPair               *pair);
  41 void    cpml_arc_put_vector_at          (const CpmlPrimitive    *arc,
  42                                          double                  pos,
  43                                          CpmlVector             *vector);
  44 double  cpml_arc_get_closest_pos        (const CpmlPrimitive    *arc,
  45                                          const CpmlPair         *pair);
  46 int     cpml_arc_put_intersections      (const CpmlPrimitive    *arc,
  47                                          const CpmlPrimitive    *arc2,
  48                                          int                     max,
  49                                          CpmlPair               *dest);
  50 int     cpml_arc_put_intersections_with_line
  51                                         (const CpmlPrimitive    *arc,
  52                                          const CpmlPrimitive    *line,
  53                                          int                     max,
  54                                          CpmlPair               *dest);
  55 void    cpml_arc_offset                 (CpmlPrimitive          *arc,
  56                                          double                  offset);
  57 void    cpml_arc_to_cairo               (const CpmlPrimitive    *arc,
  58                                          cairo_t                *cr);
  59 void    cpml_arc_to_curves              (const CpmlPrimitive    *arc,
  60                                          CpmlSegment            *segment,
  61                                          int                     n_curves);
  62
  63 CAIRO_END_DECLS
  64
  65
  66 #endif /* __CPML_ARC_H__ */