git.itanic.dy.fi Git - maemo-mapper/blob - src/gdk-pixbuf-rotate.h

   1 /* GdkPixbuf library - image transformation using 2x2 arbitrary matrix
   2  *
   3  * Copyright (C) 1999 The Free Software Foundation
   4  *
   5  * Authors: Oleg Klimov <quif@land.ru>, John Costigan
   6  *
   7  * This file is part of Maemo Mapper.
   8  *
   9  * Maemo Mapper is free software: you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation, either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * Maemo Mapper is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with Maemo Mapper.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #ifndef GDK_PIXBUF_ROTATE_H
  24 #define GDK_PIXBUF_ROTATE_H
  25
  26 #include "gdk-pixbuf/gdk-pixbuf.h"
  27
  28 G_BEGIN_DECLS
  29
  30
  31 gfloat* gdk_pixbuf_rotate_matrix_new            (void);
  32 void gdk_pixbuf_rotate_matrix_fill_for_rotation (gfloat*       matrix,
  33                                                  gfloat        angle);
  34 void gdk_pixbuf_rotate_matrix_mult_number       (gfloat*       matrix,
  35                                                  gfloat        mult);
  36 void gdk_pixbuf_rotate_matrix_mult_matrix       (gfloat*       dst_matrix,
  37                                                  const gfloat* src1,
  38                                                  const gfloat* src2);
  39 gboolean gdk_pixbuf_rotate_matrix_reverse       (gfloat*       dest,
  40                                                  const gfloat* src);
  41 void gdk_pixbuf_rotate_matrix_transpose         (gfloat*       dest,
  42                                                  const gfloat* src);
  43 gfloat gdk_pixbuf_rotate_matrix_determinant     (const gfloat* matrix);
  44
  45
  46 void gdk_pixbuf_rotate          (GdkPixbuf*    dst,
  47                                  gfloat        dst_x,
  48                                  gfloat        dst_y,
  49                                  gfloat*       matrix,
  50                                  GdkPixbuf*    src,
  51                                  gfloat        src_center_x,
  52                                  gfloat        src_center_y,
  53                                  gfloat        src_width,
  54                                  gfloat        src_height,
  55                                  gint* result_rect_x,
  56                                  gint* result_rect_y,
  57                                  gint* result_rect_width,
  58                                  gint* result_rect_height);
  59 void gdk_pixbuf_rotate_vector   (gfloat*        dst_x,
  60                                  gfloat*        dst_y,
  61                                  const gfloat*  matrix,
  62                                  gfloat         src_vector_x,
  63                                  gfloat         src_vector_y);
  64
  65 G_END_DECLS
  66
  67 #endif /* GDK_PIXBUF_ROTATE_H */
  68