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 #ifndef __CPML_ARC_H__
  21 #define __CPML_ARC_H__
  22
  23 #include <cpml/cpml-primitive.h>
  24 #include <cpml/cpml-util.h>
  25
  26
  27 CAIRO_BEGIN_DECLS
  28
  29 int     cpml_arc_type_get_npoints       (void) CPML_GNUC_CONST;
  30 cairo_bool_t
  31         cpml_arc_info                   (const CpmlPrimitive    *arc,
  32                                          CpmlPair               *center,
  33                                          double                 *r,
  34                                          double                 *start,
  35                                          double                 *end);
  36 double  cpml_arc_length                 (const CpmlPrimitive    *arc);
  37 void    cpml_arc_pair_at                (const CpmlPrimitive    *arc,
  38                                          CpmlPair               *pair,
  39                                          double                  pos);
  40 void    cpml_arc_vector_at              (const CpmlPrimitive    *arc,
  41                                          CpmlVector             *vector,
  42                                          double                  pos);
  43 double  cpml_arc_near_pos               (const CpmlPrimitive    *arc,
  44                                          const CpmlPair         *pair);
  45 int     cpml_arc_intersection           (const CpmlPrimitive    *arc,
  46                                          const CpmlPrimitive    *arc2,
  47                                          CpmlPair               *dest,
  48                                          int                     max);
  49 int     cpml_arc_intersection_with_line (const CpmlPrimitive    *arc,
  50                                          const CpmlPrimitive    *line,
  51                                          CpmlPair               *dest,
  52                                          int                     max);
  53 void    cpml_arc_offset                 (CpmlPrimitive          *arc,
  54                                          double                  offset);
  55 void    cpml_arc_to_cairo               (const CpmlPrimitive    *arc,
  56                                          cairo_t                *cr);
  57 void    cpml_arc_to_curves              (const CpmlPrimitive    *arc,
  58                                          CpmlSegment            *segment,
  59                                          int                     n_curves);
  60
  61 CAIRO_END_DECLS
  62
  63
  64 #endif /* __CPML_ARC_H__ */