libs/gfx/GP_HLineAA.c

   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) 2009-2012 Cyril Hrubis <metan@ucw.cz>                       *
  20  *                                                                           *
  21  *****************************************************************************/
  22
  23 #include "core/GP_FnPerBpp.h"
  24 #include "core/GP_Transform.h"
  25
  26 #include "gfx/GP_HLineAA.h"
  27 #include "gfx/GP_VLineAA.h"
  28
  29 /*
  30 void GP_HLineXXYAA_Raw(GP_Pixmap *pixmap, GP_Coord x0, GP_Coord x1,
  31                        GP_Coord y, GP_Pixel pixel)
  32 {
  33         GP_CHECK_PIXMAP(pixmap);
  34
  35         GP_FN_PER_BPP_PIXMAP(GP_HLine_Raw, pixmap, pixmap, x0, x1, y,
  36                               pixel);
  37 }
  38 */
  39
  40 void GP_HLineAA(GP_Pixmap *pixmap, GP_Coord x0, GP_Coord x1,
  41                 GP_Coord y, GP_Pixel pixel)
  42 {
  43         GP_CHECK_PIXMAP(pixmap);
  44
  45         if (pixmap->axes_swap) {
  46                 GP_TRANSFORM_Y_FP(pixmap, x0);
  47                 GP_TRANSFORM_Y_FP(pixmap, x1);
  48                 GP_TRANSFORM_X_FP(pixmap, y);
  49                 GP_VLineAA_Raw(pixmap, y, x0, x1, pixel);
  50         } else {
  51                 GP_TRANSFORM_X_FP(pixmap, x0);
  52                 GP_TRANSFORM_X_FP(pixmap, x1);
  53                 GP_TRANSFORM_Y_FP(pixmap, y);
  54                 GP_HLineAA_Raw(pixmap, x0, x1, y, pixel);
  55         }
  56 }