libs/gfx/GP_Triangle.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_Transform.h"
  27
  28 #include "gfx/GP_Line.h"
  29 #include "gfx/GP_Polygon.h"
  30 #include "gfx/GP_Triangle.h"
  31
  32 void GP_Triangle_Raw(GP_Pixmap *pixmap, GP_Coord x0, GP_Coord y0,
  33                      GP_Coord x1, GP_Coord y1,
  34                      GP_Coord x2, GP_Coord y2, GP_Pixel pixel)
  35 {
  36         GP_Line_Raw(pixmap, x0, y0, x1, y1, pixel);
  37         GP_Line_Raw(pixmap, x0, y0, x2, y2, pixel);
  38         GP_Line_Raw(pixmap, x1, y1, x2, y2, pixel);
  39 }
  40
  41 void GP_Triangle(GP_Pixmap *pixmap, GP_Coord x0, GP_Coord y0,
  42                  GP_Coord x1, GP_Coord y1,
  43                  GP_Coord x2, GP_Coord y2, GP_Pixel pixel)
  44 {
  45         GP_CHECK_PIXMAP(pixmap);
  46
  47         GP_TRANSFORM_POINT(pixmap, x0, y0);
  48         GP_TRANSFORM_POINT(pixmap, x1, y1);
  49         GP_TRANSFORM_POINT(pixmap, x2, y2);
  50
  51         GP_Triangle_Raw(pixmap, x0, y0, x1, y1, x2, y2, pixel);
  52 }
  53
  54 void GP_FillTriangle_Raw(GP_Pixmap *pixmap, GP_Coord x0, GP_Coord y0,
  55                          GP_Coord x1, GP_Coord y1,
  56                          GP_Coord x2, GP_Coord y2, GP_Pixel pixel)
  57 {
  58         const GP_Coord coords[6] = {x0, y0, x1, y1, x2, y2};
  59
  60         GP_FillPolygon_Raw(pixmap, 3, coords, pixel);
  61 }
  62
  63 void GP_FillTriangle(GP_Pixmap* pixmap, GP_Coord x0, GP_Coord y0,
  64                      GP_Coord x1, GP_Coord y1,
  65                      GP_Coord x2, GP_Coord y2, GP_Pixel pixel)
  66 {
  67         GP_CHECK_PIXMAP(pixmap);
  68
  69         GP_TRANSFORM_POINT(pixmap, x0, y0);
  70         GP_TRANSFORM_POINT(pixmap, x1, y1);
  71         GP_TRANSFORM_POINT(pixmap, x2, y2);
  72
  73         GP_FillTriangle_Raw(pixmap, x0, y0, x1, y1, x2, y2, pixel);
  74 }