libs/gfx/GP_VLine.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) 2009-2011 Jiri "BlueBear" Dluhos                            *
  20  *                         <jiri.bluebear.dluhos@gmail.com>                  *
  21  *                                                                           *
  22  * Copyright (C) 2009-2012 Cyril Hrubis <metan@ucw.cz>                       *
  23  *                                                                           *
  24  *****************************************************************************/
  25
  26 #include "core/GP_GetPutPixel.h"
  27 #include "core/GP_FnPerBpp.h"
  28
  29 #include "gfx/GP_VLine.h"
  30 #include "gfx/GP_HLine.h"
  31
  32 #include "algo/VLine.algo.h"
  33
  34 /* Generate drawing functions for various bit depths. */
  35 GP_DEF_DRAW_FN_PER_BPP(GP_VLine, DEF_VLINE_FN)
  36
  37 void GP_VLineXYY_Raw(GP_Context *context, GP_Coord x, GP_Coord y0,
  38                      GP_Coord y1, GP_Pixel pixel)
  39 {
  40         GP_CHECK_CONTEXT(context);
  41
  42         GP_FN_PER_BPP_CONTEXT(GP_VLine, context, context, x, y0, y1, pixel);
  43 }
  44
  45 void GP_VLineXYH_Raw(GP_Context *context, GP_Coord x, GP_Coord y, GP_Size h,
  46                      GP_Pixel pixel)
  47 {
  48         if (h == 0)
  49                 return;
  50
  51         GP_VLineXYY(context, x, y, y + h - 1, pixel);
  52 }
  53
  54 void GP_VLineXYY(GP_Context *context, GP_Coord x, GP_Coord y0,
  55                   GP_Coord y1, GP_Pixel pixel)
  56 {
  57         GP_CHECK_CONTEXT(context);
  58
  59         if (context->axes_swap) {
  60                 GP_TRANSFORM_Y(context, x);
  61                 GP_TRANSFORM_X(context, y0);
  62                 GP_TRANSFORM_X(context, y1);
  63                 GP_HLine_Raw(context, y0, y1, x, pixel);
  64         } else {
  65                 GP_TRANSFORM_X(context, x);
  66                 GP_TRANSFORM_Y(context, y0);
  67                 GP_TRANSFORM_Y(context, y1);
  68                 GP_VLine_Raw(context, x, y0, y1, pixel);
  69         }
  70 }
  71
  72 void GP_VLineXYH(GP_Context *context, GP_Coord x, GP_Coord y, GP_Size h,
  73                  GP_Pixel pixel)
  74 {
  75         if (h == 0)
  76                 return;
  77
  78         GP_VLineXYY(context, x, y, y + h - 1, pixel);
  79 }