src/cpml/cpml-primitive.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_PRIMITIVE_H__
  27 #define __CPML_PRIMITIVE_H__
  28
  29 #ifndef CAIRO_PATH_ARC_TO
  30 #define CAIRO_PATH_ARC_TO 100
  31 #endif
  32
  33
  34 CAIRO_BEGIN_DECLS
  35
  36 typedef struct _CpmlPrimitive CpmlPrimitive;
  37
  38 typedef enum {
  39     CPML_MOVE   = CAIRO_PATH_MOVE_TO,
  40     CPML_LINE   = CAIRO_PATH_LINE_TO,
  41     CPML_CURVE  = CAIRO_PATH_CURVE_TO,
  42     CPML_CLOSE  = CAIRO_PATH_CLOSE_PATH,
  43     CPML_ARC    = CAIRO_PATH_ARC_TO
  44 } CpmlPrimitiveType;
  45
  46 struct _CpmlPrimitive {
  47     CpmlSegment       *segment;
  48     cairo_path_data_t *org;
  49     cairo_path_data_t *data;
  50 };
  51
  52 size_t          cpml_primitive_type_get_n_points
  53                                            (CpmlPrimitiveType    type);
  54 void            cpml_primitive_from_segment(CpmlPrimitive       *primitive,
  55                                             CpmlSegment         *segment);
  56 void            cpml_primitive_copy        (CpmlPrimitive       *primitive,
  57                                             const CpmlPrimitive *src);
  58 void            cpml_primitive_reset       (CpmlPrimitive       *primitive);
  59 cairo_bool_t    cpml_primitive_next        (CpmlPrimitive       *primitive);
  60 size_t          cpml_primitive_get_n_points(const CpmlPrimitive *primitive);
  61 cairo_path_data_t *
  62                 cpml_primitive_get_point   (const CpmlPrimitive *primitive,
  63                                             int                  n_point);
  64 double          cpml_primitive_get_length  (const CpmlPrimitive *primitive);
  65 void            cpml_primitive_put_extents (const CpmlPrimitive *primitive,
  66                                             CpmlExtents         *extents);
  67 void            cpml_primitive_put_pair_at (const CpmlPrimitive *primitive,
  68                                             double               pos,
  69                                             CpmlPair            *pair);
  70 void            cpml_primitive_put_vector_at
  71                                            (const CpmlPrimitive *primitive,
  72                                             double               pos,
  73                                             CpmlVector          *vector);
  74 double          cpml_primitive_get_closest_pos
  75                                            (const CpmlPrimitive *primitive,
  76                                             const CpmlPair      *pair);
  77 size_t          cpml_primitive_put_intersections
  78                                            (const CpmlPrimitive *primitive,
  79                                             const CpmlPrimitive *primitive2,
  80                                             size_t               n_dest,
  81                                             CpmlPair            *dest);
  82 size_t          cpml_primitive_put_intersections_with_segment
  83                                            (const CpmlPrimitive *primitive,
  84                                             const CpmlSegment   *segment,
  85                                             size_t               n_dest,
  86                                             CpmlPair            *dest);
  87 void            cpml_primitive_offset      (CpmlPrimitive       *primitive,
  88                                             double               offset);
  89 cairo_bool_t    cpml_primitive_join        (CpmlPrimitive       *primitive,
  90                                             CpmlPrimitive       *primitive2);
  91 void            cpml_primitive_to_cairo    (const CpmlPrimitive *primitive,
  92                                             cairo_t             *cr);
  93 void            cpml_primitive_dump        (const CpmlPrimitive *primitive,
  94                                             cairo_bool_t         org_also);
  95
  96 CAIRO_END_DECLS
  97
  98
  99 #endif /* __CPML_PRIMITIVE_H__ */