src/cpml/tests/test-extents.c

   1 /* ADG - Automatic Drawing Generation
   2  * Copyright (C) 2007-2021  Nicola Fontana <ntd at entidi.it>
   3  *
   4  * This library 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 of the License, or (at your option) any later version.
   8  *
   9  * This library 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 this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301, USA.
  18  */
  19
  20
  21 #include <adg-test.h>
  22 #include <cpml.h>
  23
  24
  25 static void
  26 _cmpl_behavior_misc(void)
  27 {
  28     CpmlExtents extents = { 0 };
  29     CpmlExtents extents2 = { 0 };
  30     cairo_bool_t equals;
  31
  32     extents.is_defined = 0;
  33     extents2.is_defined = 0;
  34
  35     g_test_message("By convention, undefined extents are not equal to invalid extents");
  36     equals = cpml_extents_equal(&extents, &extents2);
  37     g_assert_true(equals);
  38     equals = cpml_extents_equal(&extents, NULL);
  39     g_assert_false(equals);
  40     equals = cpml_extents_equal(NULL, &extents);
  41     g_assert_false(equals);
  42     equals = cpml_extents_equal(NULL, NULL);
  43     g_assert_true(equals);
  44
  45     extents.is_defined = 1;
  46     equals = cpml_extents_equal(&extents, &extents2);
  47     g_assert_false(equals);
  48
  49     cpml_extents_copy(&extents2, &extents);
  50     equals = cpml_extents_equal(&extents, &extents2);
  51     g_assert_true(equals);
  52 }
  53
  54 static void
  55 _cpml_method_add(void)
  56 {
  57     CpmlPair org = { 0, 0 };
  58     CpmlPair pair1 = { 1, 2 };
  59     CpmlPair pair2 = { 3, 4 };
  60     CpmlExtents extents = { 0 };
  61     CpmlExtents extents2 = { 0 };
  62     cairo_bool_t equals, is_inside;
  63
  64     extents.is_defined = 0;
  65     extents2.is_defined = 0;
  66
  67     g_test_message("By convention, nothing is inside undefined extents...");
  68     is_inside = cpml_extents_is_inside(&extents, &extents2);
  69     g_assert_false(is_inside);
  70     is_inside = cpml_extents_pair_is_inside(&extents, &org);
  71     g_assert_false(is_inside);
  72
  73     cpml_extents_pair_add(&extents, &pair1);
  74     equals = cpml_extents_equal(&extents, &extents2);
  75     g_assert_false(equals);
  76
  77     g_test_message("...but undefined extents are always inside defined extents");
  78     is_inside = cpml_extents_is_inside(&extents, &extents2);
  79     g_assert_true(is_inside);
  80
  81     is_inside = cpml_extents_pair_is_inside(&extents, &pair1);
  82     g_assert_true(is_inside);
  83     is_inside = cpml_extents_pair_is_inside(&extents, &pair2);
  84     g_assert_false(is_inside);
  85
  86     cpml_extents_pair_add(&extents2, &pair1);
  87     equals = cpml_extents_equal(&extents, &extents2);
  88     g_assert_true(equals);
  89     is_inside = cpml_extents_is_inside(&extents, &extents2);
  90     g_assert_true(is_inside);
  91
  92     cpml_extents_pair_add(&extents, &pair2);
  93     is_inside = cpml_extents_is_inside(&extents, &extents2);
  94     g_assert_true(is_inside);
  95     is_inside = cpml_extents_pair_is_inside(&extents, &pair1);
  96     g_assert_true(is_inside);
  97     is_inside = cpml_extents_pair_is_inside(&extents, &pair2);
  98     g_assert_true(is_inside);
  99
 100     cpml_extents_pair_add(&extents2, &pair2);
 101     is_inside = cpml_extents_is_inside(&extents, &extents2);
 102     g_assert_true(is_inside);
 103
 104     is_inside = cpml_extents_is_inside(&extents2, &extents);
 105     g_assert_true(is_inside);
 106
 107     cpml_extents_pair_add(&extents2, &org);
 108     is_inside = cpml_extents_is_inside(&extents, &extents2);
 109     g_assert_false(is_inside);
 110
 111     is_inside = cpml_extents_is_inside(&extents2, &extents);
 112     g_assert_true(is_inside);
 113 }
 114
 115 static void
 116 _cpml_method_transform(void)
 117 {
 118     CpmlExtents extents;
 119     cairo_matrix_t matrix;
 120     CpmlPair nord = { 1, 0 };
 121     cairo_bool_t is_inside;
 122
 123     extents.is_defined = 1;
 124     extents.org.x = 2;
 125     extents.org.y = 3;
 126     extents.size.x = 4;
 127     extents.size.y = 5;
 128
 129     is_inside = cpml_extents_pair_is_inside(&extents, &nord);
 130     g_assert_false(is_inside);
 131
 132     cairo_matrix_init_translate(&matrix, -extents.org.x - 1, -extents.org.y - 1);
 133     cpml_extents_transform(&extents, &matrix);
 134
 135     is_inside = cpml_extents_pair_is_inside(&extents, &nord);
 136     g_assert_true(is_inside);
 137
 138     cairo_matrix_init_scale(&matrix, 0.01, 0.01);
 139     cpml_extents_transform(&extents, &matrix);
 140
 141     is_inside = cpml_extents_pair_is_inside(&extents, &nord);
 142     g_assert_false(is_inside);
 143 }
 144
 145
 146 int
 147 main(int argc, char *argv[])
 148 {
 149     adg_test_init(&argc, &argv);
 150
 151     g_test_add_func("/cpml/extents/behavior/misc", _cmpl_behavior_misc);
 152
 153     g_test_add_func("/cpml/extents/method/add", _cpml_method_add);
 154     g_test_add_func("/cpml/extents/method/transform", _cpml_method_transform);
 155
 156     return g_test_run();
 157 }