cairo/test/in-fill-trapezoid.c

   1 /*
   2  * Copyright © 2008 Chris Wilson
   3  *
   4  * Permission is hereby granted, free of charge, to any person
   5  * obtaining a copy of this software and associated documentation
   6  * files (the "Software"), to deal in the Software without
   7  * restriction, including without limitation the rights to use, copy,
   8  * modify, merge, publish, distribute, sublicense, and/or sell copies
   9  * of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  * Author: Chris Wilson <chris@chris-wilson.co.uk>
  25  */
  26
  27 #include "cairo-test.h"
  28
  29 static cairo_test_draw_function_t draw;
  30
  31 static const cairo_test_t test = {
  32     "in-fill-trapezoid",
  33     "Test _cairo_trap_contains via cairo_in_fill",
  34     0, 0,
  35     draw
  36 };
  37
  38 static cairo_test_status_t
  39 draw (cairo_t *cr, int width, int height)
  40 {
  41     const cairo_test_context_t *ctx = cairo_test_get_context (cr);
  42     cairo_test_status_t ret = CAIRO_TEST_SUCCESS;
  43
  44     cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
  45
  46     /* simple rectangle */
  47     cairo_new_path (cr);
  48     cairo_rectangle (cr, -10, -10, 20, 20);
  49     if (! cairo_in_fill (cr, 0, 0)) {
  50         cairo_test_log (ctx, "Error: Failed to find point inside rectangle\n");
  51         ret = CAIRO_TEST_FAILURE;
  52     }
  53
  54     /* simple circle */
  55     cairo_new_path (cr);
  56     cairo_arc (cr, 0, 0, 10, 0, 2 * M_PI);
  57     if (! cairo_in_fill (cr, 0, 0)) {
  58         cairo_test_log (ctx, "Error: Failed to find point inside circle\n");
  59         ret = CAIRO_TEST_FAILURE;
  60     }
  61
  62     /* holey rectangle */
  63     cairo_new_path (cr);
  64     cairo_rectangle (cr, -10, -10, 20, 20);
  65     cairo_rectangle (cr, -5, -5, 10, 10);
  66     if (cairo_in_fill (cr, 0, 0)) {
  67         cairo_test_log (ctx, "Error: Found an unexpected point inside rectangular hole\n");
  68         ret = CAIRO_TEST_FAILURE;
  69     }
  70
  71     /* holey circle */
  72     cairo_new_path (cr);
  73     cairo_arc (cr, 0, 0, 10, 0, 2 * M_PI);
  74     cairo_arc (cr, 0, 0, 5, 0, 2 * M_PI);
  75     if (cairo_in_fill (cr, 0, 0)) {
  76         cairo_test_log (ctx, "Error: Found an unexpected point inside circular hole\n");
  77         ret = CAIRO_TEST_FAILURE;
  78     }
  79
  80     return ret;
  81 }
  82
  83 int
  84 main (void)
  85 {
  86     return cairo_test (&test);
  87 }