include/gfx/GP_LineAA.h

   1 /*****************************************************************************
   2  * This file is part of gfxprim library.                                     *
   3  *                                                                           *
   4  * Gfxprim 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 2.1 of the License, or (at your option) any later version.        *
   8  *                                                                           *
   9  * Gfxprim 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 gfxprim; if not, write to the Free Software            *
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                        *
  17  * Boston, MA  02110-1301  USA                                               *
  18  *                                                                           *
  19  * Copyright (C) 2012 Cyril Hrubis <metan@ucw.cz>                            *
  20  *                                                                           *
  21  *****************************************************************************/
  22
  23 /*
  24
  25    Anti Aliased line.
  26
  27    The coordinates are in XX.8 fixed point format, see core/GP_FixedPoint.h
  28    for helper macros.
  29
  30    For RGB pixmaps gamma correction tables are used to generate correct
  31    intensity for pixels.
  32
  33  */
  34
  35 #ifndef GFX_GP_LINE_AA_H
  36 #define GFX_GP_LINE_AA_H
  37
  38 #include "core/GP_Pixmap.h"
  39
  40 /*
  41  * Anti Aliased Line respecting pixmap rotation flags and with clipping.
  42  */
  43 void GP_LineAA(GP_Pixmap *pixmap, GP_Coord x0, GP_Coord y0,
  44                GP_Coord x1, GP_Coord y1, GP_Pixel pixel);
  45
  46 /*
  47  * Line without contect rotation flags.
  48  */
  49 void GP_LineAA_Raw(GP_Pixmap *pixmap, GP_Coord x0, GP_Coord y0,
  50                    GP_Coord x1, GP_Coord y1, GP_Pixel pixel);
  51
  52 #endif /* GFX_GP_LINE_AA_H */