cpml/cpml-segment.h

   1 /* CPML - Cairo Path Manipulation Library
   2  * Copyright (C) 2008,2009,2010  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_SEGMENT_H__
  27 #define __CPML_SEGMENT_H__
  28
  29
  30 CAIRO_BEGIN_DECLS
  31
  32 typedef cairo_path_t CpmlPath;
  33 typedef struct _CpmlSegment CpmlSegment;
  34
  35 struct _CpmlSegment {
  36         CpmlPath          *path;
  37         cairo_path_data_t *data;
  38         int                num_data;
  39 };
  40
  41
  42 cairo_bool_t
  43         cpml_segment_from_cairo         (CpmlSegment            *segment,
  44                                          CpmlPath               *path);
  45 void    cpml_segment_copy               (CpmlSegment            *segment,
  46                                          const CpmlSegment      *src);
  47 #define cpml_path_is_empty(cpml_path) \
  48     ((cpml_path) == NULL || (cpml_path)->data == NULL || \
  49      (cpml_path)->num_data <= 0)
  50 void    cpml_segment_reset              (CpmlSegment            *segment);
  51 cairo_bool_t
  52         cpml_segment_next               (CpmlSegment            *segment);
  53 double  cpml_segment_get_length         (const CpmlSegment      *segment);
  54 void    cpml_segment_put_extents        (const CpmlSegment      *segment,
  55                                          CpmlExtents            *extents);
  56 void    cpml_segment_put_pair_at        (const CpmlSegment      *segment,
  57                                          double                  pos,
  58                                          CpmlPair               *pair);
  59 void    cpml_segment_put_vector_at      (const CpmlSegment      *segment,
  60                                          double                  pos,
  61                                          CpmlVector             *vector);
  62 size_t  cpml_segment_put_intersections  (const CpmlSegment      *segment,
  63                                          const CpmlSegment      *segment2,
  64                                          size_t                  n_dest,
  65                                          CpmlPair               *dest);
  66 void    cpml_segment_offset             (CpmlSegment            *segment,
  67                                          double                  offset);
  68 void    cpml_segment_transform          (CpmlSegment            *segment,
  69                                          const cairo_matrix_t   *matrix);
  70 void    cpml_segment_reverse            (CpmlSegment            *segment);
  71 void    cpml_segment_to_cairo           (const CpmlSegment      *segment,
  72                                          cairo_t                *cr);
  73 void    cpml_segment_dump               (const CpmlSegment      *segment);
  74
  75 CAIRO_END_DECLS
  76
  77
  78 #endif /* __CPML_SEGMENT_H__ */