src/adg/tests/test-trail.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 <adg.h>
  23
  24
  25 static cairo_path_t *
  26 _adg_path_callback(AdgTrail *trail, gpointer user_data)
  27 {
  28     static cairo_path_data_t data[] = {
  29         { .header = { CPML_MOVE, 2 }},
  30         { .point = { 0, 1 }},
  31         { .header = { CPML_LINE, 2 }},
  32         { .point = { 2, 3 }},
  33         { .header = { CPML_LINE, 2 }},
  34         { .point = { 4, 5 }}
  35     };
  36     static cairo_path_t path = {
  37         CAIRO_STATUS_SUCCESS,
  38         data,
  39         G_N_ELEMENTS(data)
  40     };
  41
  42     return &path;
  43 }
  44
  45
  46 static void
  47 _adg_property_max_angle(void)
  48 {
  49     AdgTrail *trail;
  50     gdouble valid_value, invalid_value;
  51     gdouble max_angle;
  52
  53     trail = adg_trail_new(_adg_path_callback, NULL);
  54     valid_value = G_PI / 10;
  55     invalid_value = G_PI + 1;
  56
  57     /* Using the public APIs */
  58     adg_trail_set_max_angle(trail, valid_value);
  59     max_angle = adg_trail_get_max_angle(trail);
  60     adg_assert_isapprox(max_angle, valid_value);
  61
  62     adg_trail_set_max_angle(trail, invalid_value);
  63     max_angle = adg_trail_get_max_angle(trail);
  64     g_assert_cmpfloat(max_angle, !=, invalid_value);
  65
  66     /* Using GObject property methods */
  67     g_object_set(trail, "max-angle", valid_value, NULL);
  68     g_object_get(trail, "max-angle", &max_angle, NULL);
  69     adg_assert_isapprox(max_angle, valid_value);
  70
  71     g_object_set(trail, "max-angle", invalid_value, NULL);
  72     g_object_get(trail, "max-angle", &max_angle, NULL);
  73     g_assert_cmpfloat(max_angle, !=, invalid_value);
  74
  75     g_object_unref(trail);
  76 }
  77
  78 static void
  79 _adg_method_n_segments(void)
  80 {
  81     AdgPath *path;
  82
  83     path = adg_path_new();
  84
  85     /* Sanity checks */
  86     g_assert_cmpuint(adg_trail_n_segments(NULL), ==, 0);
  87
  88     /* Check empty path */
  89     g_assert_cmpuint(adg_trail_n_segments(ADG_TRAIL(path)), ==, 0);
  90
  91     /* Check single segment */
  92     adg_path_move_to_explicit(path, 0, 1);
  93     adg_path_line_to_explicit(path, 2, 3);
  94     g_assert_cmpuint(adg_trail_n_segments(ADG_TRAIL(path)), ==, 1);
  95
  96     adg_path_append_cairo_path(path, adg_test_path());
  97
  98     /* Count segments on a more complex path */
  99     g_assert_cmpuint(adg_trail_n_segments(ADG_TRAIL(path)), ==, 5+1);
 100
 101     g_object_unref(path);
 102 }
 103
 104 static void
 105 _adg_method_put_segment(void)
 106 {
 107     AdgTrail *trail;
 108     AdgPath *path;
 109     CpmlSegment segment;
 110
 111     path = adg_path_new();
 112
 113     /* First segment: a simple CPML_LINE */
 114     adg_path_move_to_explicit(path, 1, 2);
 115     adg_path_line_to_explicit(path, 3, 4);
 116
 117     /* Second segment: a closed curve with a bogus CPML_MOVE prepended */
 118     adg_path_move_to_explicit(path, 5, 6);
 119     adg_path_move_to_explicit(path, 7, 8);
 120     adg_path_curve_to_explicit(path, 9, 10, 11, 12, 13, 14);
 121     adg_path_close(path);
 122
 123     /* Junk */
 124     adg_path_close(path);
 125     adg_path_arc_to_explicit(path, 15, 16, 17, 18);
 126
 127     /* Third segment: a closed CPML_ARC */
 128     adg_path_move_to_explicit(path, 19, 20);
 129     adg_path_arc_to_explicit(path, 21, 22, 23, 24);
 130     adg_path_close(path);
 131
 132     /* Other junk */
 133     adg_path_line_to_explicit(path, 25, 26);
 134
 135     trail = ADG_TRAIL(path);
 136
 137     /* Sanity checks */
 138     g_assert_false(adg_trail_put_segment(NULL, 1, &segment));
 139     g_assert_false(adg_trail_put_segment(trail, 0, &segment));
 140     g_assert_true(adg_trail_put_segment(trail, 1, NULL));
 141
 142     /* Check segment browsing */
 143     g_assert_true(adg_trail_put_segment(trail, 1, &segment));
 144     g_assert_cmpint(segment.num_data, ==, 4);
 145     g_assert_cmpint(segment.data[0].header.type, ==, CPML_MOVE);
 146     g_assert_cmpint(segment.data[2].header.type, ==, CPML_LINE);
 147
 148     g_assert_true(adg_trail_put_segment(trail, 2, &segment));
 149     g_assert_cmpint(segment.num_data, ==, 7);
 150     g_assert_cmpint(segment.data[0].header.type, ==, CPML_MOVE);
 151     g_assert_cmpint(segment.data[2].header.type, ==, CPML_CURVE);
 152     g_assert_cmpint(segment.data[6].header.type, ==, CPML_CLOSE);
 153
 154     g_assert_true(adg_trail_put_segment(trail, 3, &segment));
 155     g_assert_cmpint(segment.num_data, ==, 6);
 156     g_assert_cmpint(segment.data[0].header.type, ==, CPML_MOVE);
 157     g_assert_cmpint(segment.data[2].header.type, ==, CPML_ARC);
 158     g_assert_cmpint(segment.data[5].header.type, ==, CPML_CLOSE);
 159
 160     g_assert_false(adg_trail_put_segment(trail, 4, &segment));
 161
 162     g_object_unref(path);
 163 }
 164
 165
 166 int
 167 main(int argc, char *argv[])
 168 {
 169     adg_test_init(&argc, &argv);
 170
 171     adg_test_add_object_checks("/adg/trail/type/object", ADG_TYPE_TRAIL);
 172     adg_test_add_model_checks("/adg/trail/type/model", ADG_TYPE_TRAIL);
 173
 174     g_test_add_func("/adg/trail/property/max-angle", _adg_property_max_angle);
 175
 176     g_test_add_func("/adg/trail/method/n-segments", _adg_method_n_segments);
 177     g_test_add_func("/adg/trail/method/put-segment", _adg_method_put_segment);
 178
 179     return g_test_run();
 180 }