src/adg/adg-matrix.h

   1 /* ADG - Automatic Drawing Generation
   2  * Copyright (C) 2007-2021  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 const cairo_matrix_t *
  33                 adg_matrix_identity     (void);
  34 const cairo_matrix_t *
  35                 adg_matrix_null         (void);
  36 void            adg_matrix_copy         (cairo_matrix_t         *matrix,
  37                                          const cairo_matrix_t   *src);
  38 cairo_matrix_t *adg_matrix_dup          (const cairo_matrix_t   *matrix);
  39 gboolean        adg_matrix_equal        (const cairo_matrix_t   *matrix1,
  40                                          const cairo_matrix_t   *matrix2);
  41 gboolean        adg_matrix_normalize    (cairo_matrix_t         *matrix);
  42 void            adg_matrix_transform    (cairo_matrix_t         *matrix,
  43                                          const cairo_matrix_t   *transformation,
  44                                          AdgTransformMode        mode);
  45 void            adg_matrix_dump         (const cairo_matrix_t   *matrix);
  46
  47 G_END_DECLS
  48
  49
  50 #endif /* __ADG_MATRIX_H__ */