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 #ifndef __CPML_CURVE_H__
  21 #define __CPML_CURVE_H__
  22
  23 #include <cpml/cpml-primitive.h>
  24 #include <cpml/cpml-macros.h>
  25
  26
  27 CAIRO_BEGIN_DECLS
  28
  29 int     cpml_curve_type_get_npoints     (void) CPML_GNUC_CONST;
  30 double  cpml_curve_length               (const CpmlPrimitive    *curve);
  31 void    cpml_curve_pair_at_time         (const CpmlPrimitive    *curve,
  32                                          CpmlPair               *pair,
  33                                          double                  time);
  34 void    cpml_curve_pair_at              (const CpmlPrimitive    *curve,
  35                                          CpmlPair               *pair,
  36                                          double                  pos);
  37 void    cpml_curve_vector_at_time       (const CpmlPrimitive    *curve,
  38                                          CpmlVector             *vector,
  39                                          double                  t);
  40 void    cpml_curve_vector_at            (const CpmlPrimitive    *curve,
  41                                          CpmlVector             *vector,
  42                                          double                  pos);
  43 int     cpml_curve_intersection         (const CpmlPrimitive    *curve,
  44                                          const CpmlPrimitive    *curve2,
  45                                          CpmlPair               *dest);
  46 int     cpml_curve_intersection_with_arc(const CpmlPrimitive    *curve,
  47                                          const CpmlPrimitive    *arc,
  48                                          CpmlPair               *dest);
  49 int     cpml_curve_intersection_with_line
  50                                         (const CpmlPrimitive    *curve,
  51                                          const CpmlPrimitive    *line,
  52                                          CpmlPair               *dest);
  53 void    cpml_curve_offset               (CpmlPrimitive          *curve,
  54                                          double                  offset);
  55
  56 CAIRO_END_DECLS
  57
  58
  59 #endif /* __CPML_CURVE_H__ */