src/cpml/tests/test-arc.c

   1 /* ADG - Automatic Drawing Generation
   2  * Copyright (C) 2007-2017  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 #include <math.h>
  24
  25
  26 static cairo_path_data_t arc_data[] = {
  27     { .header = { CPML_MOVE, 2 }},
  28     { .point = { 0, 3 }},
  29
  30     { .header = { CPML_ARC, 3 }},
  31     { .point = { 3, 0 }},
  32     { .point = { 0, -3 }}
  33 };
  34
  35 CpmlPrimitive arc = {
  36     NULL,
  37     &arc_data[1],
  38     &arc_data[2]
  39 };
  40
  41
  42 static void
  43 _cpml_sanity_info(gint i)
  44 {
  45     switch (i) {
  46     case 1:
  47         cpml_arc_info(NULL, NULL, NULL, NULL, NULL);
  48         break;
  49     default:
  50         g_test_trap_assert_failed();
  51         break;
  52     }
  53 }
  54
  55 static void
  56 _cpml_sanity_to_cairo(gint i)
  57 {
  58     cairo_t *cr;
  59
  60     cr = adg_test_cairo_context();
  61
  62     switch (i) {
  63     case 1:
  64         cpml_arc_to_cairo(NULL, cr);
  65         break;
  66     case 2:
  67         cpml_arc_to_cairo(&arc, NULL);
  68         break;
  69     default:
  70         g_test_trap_assert_failed();
  71         break;
  72     }
  73
  74     cairo_destroy(cr);
  75 }
  76
  77 static void
  78 _cpml_sanity_to_curves(int i)
  79 {
  80     CpmlSegment segment;
  81
  82     switch (i) {
  83     case 1:
  84         cpml_arc_to_curves(NULL, &segment, 1);
  85         break;
  86     case 2:
  87         cpml_arc_to_curves(&arc, NULL, 1);
  88         break;
  89     case 3:
  90         cpml_arc_to_curves(&arc, &segment, 0);
  91         break;
  92     default:
  93         g_test_trap_assert_failed();
  94         break;
  95     }
  96 }
  97
  98 static void
  99 _cpml_method_info(void)
 100 {
 101     CpmlPair center;
 102     double r, start, end;
 103
 104     /* Passing NULL to the output arguments is valid */
 105     g_assert_true(cpml_arc_info(&arc, NULL, NULL, NULL, NULL));
 106
 107     g_assert_true(cpml_arc_info(&arc, &center, &r, &start, &end));
 108
 109     adg_assert_isapprox(center.x, 0);
 110     adg_assert_isapprox(center.y, 0);
 111     adg_assert_isapprox(r, 3);
 112     adg_assert_isapprox(start, M_PI_2);
 113     adg_assert_isapprox(end, -M_PI_2);
 114 }
 115
 116
 117
 118 int
 119 main(int argc, char *argv[])
 120 {
 121     adg_test_init(&argc, &argv);
 122
 123     adg_test_add_traps("/cpml/arc/sanity/info", _cpml_sanity_info, 1);
 124     adg_test_add_traps("/cpml/arc/sanity/to-cairo", _cpml_sanity_to_cairo, 2);
 125     adg_test_add_traps("/cpml/arc/sanity/to-curves", _cpml_sanity_to_curves, 3);
 126
 127     g_test_add_func("/cpml/arc/method/info", _cpml_method_info);
 128
 129     return g_test_run();
 130 }