tests/gfx/Line.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 <string.h>
  24 #include <errno.h>
  25 #include <sys/stat.h>
  26
  27 #include <core/GP_Pixmap.h>
  28 #include <gfx/GP_Line.h>
  29
  30 #include "tst_test.h"
  31
  32 #include "common.h"
  33
  34 struct testcase {
  35         /* line description */
  36         GP_Coord x0;
  37         GP_Coord y0;
  38         GP_Coord x1;
  39         GP_Coord y1;
  40
  41         /* expected result */
  42         GP_Size w, h;
  43         const char pixmap[];
  44 };
  45
  46 static int test_line(const struct testcase *t)
  47 {
  48         GP_Pixmap *c;
  49         int err;
  50
  51         c = GP_PixmapAlloc(t->w, t->h, GP_PIXEL_G8);
  52
  53         if (c == NULL) {
  54                 tst_err("Failed to allocate pixmap");
  55                 return TST_UNTESTED;
  56         }
  57
  58         /* zero the pixels buffer */
  59         memset(c->pixels, 0, c->w * c->h);
  60
  61         GP_Line(c, t->x0, t->y0, t->x1, t->y1, 1);
  62
  63         err = compare_buffers(t->pixmap, c);
  64
  65         if (err)
  66                 return TST_FAILED;
  67
  68         return TST_SUCCESS;
  69 }
  70
  71 static struct testcase testcase_line_1px = {
  72         .x0 = 1,
  73         .y0 = 1,
  74         .x1 = 1,
  75         .y1 = 1,
  76
  77         .w = 3,
  78         .h = 3,
  79
  80         .pixmap = {
  81                 0, 0, 0,
  82                 0, 1, 0,
  83                 0, 0, 0,
  84         }
  85 };
  86
  87 static struct testcase testcase_line_horiz = {
  88         .x0 = 2,
  89         .y0 = 2,
  90         .x1 = 8,
  91         .y1 = 2,
  92
  93         .w = 11,
  94         .h = 5,
  95
  96         .pixmap = {
  97                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  98                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  99                 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0,
 100                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 101                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 102         }
 103 };
 104
 105 static struct testcase testcase_line_vert = {
 106         .x0 = 2,
 107         .y0 = 2,
 108         .x1 = 2,
 109         .y1 = 8,
 110
 111         .w = 5,
 112         .h = 11,
 113
 114         .pixmap = {
 115                 0, 0, 0, 0, 0,
 116                 0, 0, 0, 0, 0,
 117                 0, 0, 1, 0, 0,
 118                 0, 0, 1, 0, 0,
 119                 0, 0, 1, 0, 0,
 120                 0, 0, 1, 0, 0,
 121                 0, 0, 1, 0, 0,
 122                 0, 0, 1, 0, 0,
 123                 0, 0, 1, 0, 0,
 124                 0, 0, 0, 0, 0,
 125                 0, 0, 0, 0, 0,
 126         }
 127 };
 128
 129 static struct testcase testcase_line_45 = {
 130         .x0 = 0,
 131         .y0 = 0,
 132         .x1 = 10,
 133         .y1 = 10,
 134
 135         .w = 11,
 136         .h = 11,
 137
 138         .pixmap = {
 139                 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 140                 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 141                 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0,
 142                 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
 143                 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
 144                 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,
 145                 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
 146                 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
 147                 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0,
 148                 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,
 149                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
 150         }
 151 };
 152
 153 static struct testcase testcase_line_15 = {
 154         .x0 = 0,
 155         .y0 = 1,
 156         .x1 = 11,
 157         .y1 = 6,
 158
 159         .w = 11,
 160         .h = 8,
 161
 162         .pixmap = {
 163                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 164                 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 165                 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
 166                 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0,
 167                 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0,
 168                 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
 169                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 170                 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 171         }
 172 };
 173
 174 static struct testcase testcase_line_clip = {
 175         .x0 = -1000,
 176         .y0 = -1000,
 177         .x1 = 1000,
 178         .y1 = 1000,
 179
 180         .w = 4,
 181         .h = 4,
 182
 183         .pixmap = {
 184                 1, 0, 0, 0,
 185                 0, 1, 0, 0,
 186                 0, 0, 1, 0,
 187                 0, 0, 0, 1,
 188         }
 189 };
 190
 191 static struct testcase testcase_line_large_xy = {
 192         .x0 = -1000000000,
 193         .y0 = -1000000000,
 194         .x1 = 1000000000,
 195         .y1 = 1000000000,
 196
 197         .w = 4,
 198         .h = 4,
 199
 200         .pixmap = {
 201                 1, 0, 0, 0,
 202                 0, 1, 0, 0,
 203                 0, 0, 1, 0,
 204                 0, 0, 0, 1,
 205         }
 206 };
 207
 208 const struct tst_suite tst_suite = {
 209         .suite_name = "Line Testsuite",
 210         .tests = {
 211                 {.name = "Line 1px",
 212                  .tst_fn = test_line,
 213                  .data = &testcase_line_1px},
 214
 215                 {.name = "Line Horizontal",
 216                  .tst_fn = test_line,
 217                  .data = &testcase_line_horiz},
 218
 219                 {.name = "Line Vertical",
 220                  .tst_fn = test_line,
 221                  .data = &testcase_line_vert},
 222
 223                 {.name = "Line 45 degrees",
 224                  .tst_fn = test_line,
 225                  .data = &testcase_line_45},
 226
 227                 {.name = "Line 15 degrees",
 228                  .tst_fn = test_line,
 229                  .data = &testcase_line_15},
 230
 231                 {.name = "Line clipping",
 232                  .tst_fn = test_line,
 233                  .data = &testcase_line_clip},
 234
 235                 {.name = "Line large coordinates",
 236                  .tst_fn = test_line,
 237                  .data = &testcase_line_large_xy,
 238                  .timeout = 1},
 239
 240                 {.name = NULL}
 241         }
 242 };