src/adg/adg-matrix.h

   1 /* ADG - Automatic Drawing Generation
   2  * Copyright (C) 2007,2008,2009,2010,2011  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(__ADG_H__)
  22 #error "Only <adg.h> can be included directly."
  23 #endif
  24
  25
  26 #ifndef __ADG_MATRIX_H__
  27 #define __ADG_MATRIX_H__
  28
  29
  30 G_BEGIN_DECLS
  31
  32 #define ADG_TYPE_MATRIX  (adg_matrix_get_type())
  33
  34
  35 typedef cairo_matrix_t AdgMatrix;
  36
  37
  38 GType            adg_matrix_get_type            (void) G_GNUC_CONST;
  39 const AdgMatrix *adg_matrix_identity            (void) G_GNUC_CONST;
  40 const AdgMatrix *adg_matrix_null                (void) G_GNUC_CONST;
  41
  42 AdgMatrix *      adg_matrix_copy                (AdgMatrix       *matrix,
  43                                                  const AdgMatrix *src);
  44 AdgMatrix *      adg_matrix_dup                 (const AdgMatrix *matrix);
  45 gboolean         adg_matrix_equal               (const AdgMatrix *matrix1,
  46                                                  const AdgMatrix *matrix2);
  47 gboolean         adg_matrix_normalize           (AdgMatrix       *matrix);
  48 void             adg_matrix_transform           (AdgMatrix       *matrix,
  49                                                  const AdgMatrix *transformation,
  50                                                  AdgTransformMode mode);
  51 void             adg_matrix_dump                (const AdgMatrix *matrix);
  52
  53 G_END_DECLS
  54
  55
  56 #endif /* __ADG_MATRIX_H__ */