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 *
  40         cpml_primitive_copy             (CpmlPrimitive          *primitive,
  41                                          const CpmlPrimitive    *src);
  42 CpmlPrimitive *
  43         cpml_primitive_from_segment     (CpmlPrimitive          *primitive,
  44                                          CpmlSegment            *segment);
  45 void    cpml_primitive_reset            (CpmlPrimitive          *primitive);
  46 cairo_bool_t
  47         cpml_primitive_next             (CpmlPrimitive          *primitive);
  48
  49 int     cpml_primitive_get_npoints      (const CpmlPrimitive    *primitive);
  50 cairo_path_data_t *
  51         cpml_primitive_get_point        (const CpmlPrimitive    *primitive,
  52                                          int                     npoint);
  53 void    cpml_primitive_to_cairo         (const CpmlPrimitive    *primitive,
  54                                          cairo_t                *cr);
  55 void    cpml_primitive_dump             (const CpmlPrimitive    *primitive,
  56                                          cairo_bool_t            org_also);
  57 int     cpml_primitive_intersection_with_segment
  58                                         (const CpmlPrimitive    *primitive,
  59                                          const CpmlSegment      *segment,
  60                                          CpmlPair               *dest,
  61                                          int                     max);
  62
  63 /* To be implemented by the primitives */
  64 int     cpml_primitive_type_get_npoints (CpmlPrimitiveType       type);
  65 double  cpml_primitive_length           (const CpmlPrimitive    *primitive);
  66 void    cpml_primitive_pair_at          (const CpmlPrimitive    *primitive,
  67                                          CpmlPair               *pair,
  68                                          double                  pos);
  69 void    cpml_primitive_vector_at        (const CpmlPrimitive    *primitive,
  70                                          CpmlVector             *vector,
  71                                          double                  pos);
  72 double  cpml_primitive_near_pos         (const CpmlPrimitive    *primitive,
  73                                          const CpmlPair         *pair);
  74 cairo_bool_t
  75         cpml_primitive_join             (CpmlPrimitive          *primitive,
  76                                          CpmlPrimitive          *primitive2);
  77 int     cpml_primitive_intersection     (const CpmlPrimitive    *primitive,
  78                                          const CpmlPrimitive    *primitive2,
  79                                          CpmlPair               *dest,
  80                                          int                     max);
  81 void    cpml_primitive_offset           (CpmlPrimitive          *primitive,
  82                                          double                  offset);
  83
  84 CAIRO_END_DECLS
  85
  86
  87 #endif /* __CPML_PRIMITIVE_H__ */