cpml/cpml-primitive.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_PRIMITIVE_H__
  21 #define __CPML_PRIMITIVE_H__
  22
  23 #include <cpml/cpml-segment.h>
  24 #include <cpml/cpml-pair.h>
  25
  26
  27 CAIRO_BEGIN_DECLS
  28
  29 typedef struct _CpmlPrimitive CpmlPrimitive;
  30 typedef cairo_path_data_type_t CpmlPrimitiveType;
  31
  32 struct _CpmlPrimitive {
  33     CpmlSegment       *segment;
  34     cairo_path_data_t *org;
  35     cairo_path_data_t *data;
  36 };
  37
  38
  39 CpmlPrimitive * cpml_primitive_copy        (CpmlPrimitive       *primitive,
  40                                             const CpmlPrimitive *src);
  41 CpmlPrimitive * cpml_primitive_from_segment(CpmlPrimitive       *primitive,
  42                                             CpmlSegment         *segment);
  43 void            cpml_primitive_reset       (CpmlPrimitive       *primitive);
  44 cairo_bool_t    cpml_primitive_next        (CpmlPrimitive       *primitive);
  45
  46 int             cpml_primitive_get_npoints (const CpmlPrimitive *primitive);
  47 cairo_path_data_t *
  48                 cpml_primitive_get_point   (const CpmlPrimitive *primitive,
  49                                             int                  npoint);
  50 void            cpml_primitive_to_cairo    (const CpmlPrimitive *primitive,
  51                                             cairo_t             *cr);
  52 void            cpml_primitive_dump        (const CpmlPrimitive *primitive,
  53                                             cairo_bool_t         org_also);
  54 int             cpml_primitive_put_intersections_with_segment
  55                                            (const CpmlPrimitive *primitive,
  56                                             const CpmlSegment   *segment,
  57                                             CpmlPair            *dest,
  58                                             int                  max);
  59
  60 /* To be implemented by the primitives */
  61 int             cpml_primitive_type_get_npoints
  62                                            (CpmlPrimitiveType    type);
  63 double          cpml_primitive_get_length  (const CpmlPrimitive *primitive);
  64 void            cpml_primitive_put_extents (const CpmlPrimitive *primitive,
  65                                             CpmlExtents         *extents);
  66 void            cpml_primitive_put_pair_at (const CpmlPrimitive *primitive,
  67                                             double               pos,
  68                                             CpmlPair            *pair);
  69 void            cpml_primitive_put_vector_at
  70                                            (const CpmlPrimitive *primitive,
  71                                             double               pos,
  72                                             CpmlVector          *vector);
  73 double          cpml_primitive_get_closest_pos
  74                                            (const CpmlPrimitive *primitive,
  75                                             const CpmlPair      *pair);
  76 cairo_bool_t    cpml_primitive_join        (CpmlPrimitive       *primitive,
  77                                             CpmlPrimitive       *primitive2);
  78 int             cpml_primitive_put_intersections
  79                                            (const CpmlPrimitive *primitive,
  80                                             const CpmlPrimitive *primitive2,
  81                                             int                  max,
  82                                             CpmlPair            *dest);
  83 void            cpml_primitive_offset      (CpmlPrimitive       *primitive,
  84                                             double               offset);
  85
  86 CAIRO_END_DECLS
  87
  88
  89 #endif /* __CPML_PRIMITIVE_H__ */