cairo/test/leaky-dashed-stroke.c

   1 /*
   2  * Copyright © 2008 Chris Wilson
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software
   5  * and its documentation for any purpose is hereby granted without
   6  * fee, provided that the above copyright notice appear in all copies
   7  * and that both that copyright notice and this permission notice
   8  * appear in supporting documentation, and that the name of
   9  * Chris Wilson not be used in advertising or publicity pertaining to
  10  * distribution of the software without specific, written prior
  11  * permission. Chris Wilson makes no representations about the
  12  * suitability of this software for any purpose.  It is provided "as
  13  * is" without express or implied warranty.
  14  *
  15  * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
  18  * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  20  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  21  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  *
  23  * Author: Chris Wilson <chris@chris-wilson.co.uk>
  24  */
  25
  26 /* Extracted from a test case reported by Jeff Muizelaar found whilst running
  27  * firefox http://people.mozilla.com/~jmuizelaar/BerlinDistricts-check.svg
  28  */
  29
  30 #include "cairo-test.h"
  31
  32 #define WIDTH 205
  33 #define HEIGHT 260
  34
  35 static cairo_test_draw_function_t draw;
  36
  37 static const cairo_test_t test = {
  38     "leaky-dashed-stroke",
  39     "Exercises bug in which a dashed stroke leaks in from outside the surface",
  40     WIDTH, HEIGHT,
  41     draw
  42 };
  43
  44 static cairo_test_status_t
  45 draw (cairo_t *cr, int width, int height)
  46 {
  47     const double dash[2] = {.5, .5};
  48
  49     cairo_set_source_rgb (cr, 1, 1, 1);
  50     cairo_paint (cr);
  51
  52     cairo_set_source_rgb (cr, 1., 0., 0);
  53
  54     /* By adjusting the miter limit, we can see variations on the artifact.
  55      * cairo_set_miter_limit (cr, 4.);
  56      */
  57
  58     cairo_translate (cr, -720, -484);
  59     cairo_scale (cr, 2.5, 2.5);
  60
  61     cairo_set_dash (cr, dash, 2, 0);
  62
  63     cairo_move_to (cr, 293.622, 330);
  64     cairo_line_to (cr, 293.703, 337.028);
  65     cairo_line_to (cr, 297.45, 336.851);
  66     cairo_line_to (cr, 308.88, 342.609);
  67     cairo_line_to (cr, 309.736, 346.107);
  68     cairo_line_to (cr, 312.972, 348.128);
  69     cairo_line_to (cr, 312.977, 353.478);
  70     cairo_line_to (cr, 322.486, 359.355);
  71     cairo_line_to (cr, 320.831, 363.642);
  72     cairo_line_to (cr, 315.175, 367.171);
  73     cairo_line_to (cr, 308.987, 365.715);
  74     cairo_line_to (cr, 301.3, 365.964);
  75     cairo_line_to (cr, 304.712, 368.852);
  76     cairo_line_to (cr, 305.349, 373.022);
  77     cairo_line_to (cr, 303.211, 376.551);
  78     cairo_line_to (cr, 304.915, 382.855);
  79     cairo_line_to (cr, 323.715, 400.475);
  80     cairo_line_to (cr, 355.323, 424.072);
  81     cairo_line_to (cr, 443.078, 426.534);
  82     cairo_line_to (cr, 455.26, 400.603);
  83     cairo_line_to (cr, 471.924, 392.604);
  84     cairo_line_to (cr, 478.556, 390.797);
  85     cairo_line_to (cr, 477.715, 386);
  86     cairo_line_to (cr, 456.807, 376.507);
  87     cairo_line_to (cr, 449.134, 368.722);
  88     cairo_line_to (cr, 449.147, 365.847);
  89     cairo_line_to (cr, 439.981, 361.692);
  90     cairo_line_to (cr, 439.994, 358.603);
  91     cairo_line_to (cr, 454.645, 336.128);
  92     cairo_line_to (cr, 434.995, 324.005);
  93     cairo_line_to (cr, 423.884, 319.354);
  94     cairo_line_to (cr, 421.098, 312.569);
  95     cairo_line_to (cr, 424.291, 305.997);
  96     cairo_line_to (cr, 431.308, 305.069);
  97     cairo_line_to (cr, 437.257, 296.882);
  98     cairo_line_to (cr, 448.544, 296.808);
  99     cairo_line_to (cr, 452.113, 290.651);
 100     cairo_line_to (cr, 448.469, 285.483);
 101     cairo_line_to (cr, 442.903, 282.877);
 102     cairo_line_to (cr, 447.798, 281.124);
 103     cairo_line_to (cr, 454.622, 274.911);
 104     cairo_line_to (cr, 449.491, 269.978);
 105     cairo_line_to (cr, 443.666, 253.148);
 106     cairo_line_to (cr, 445.741, 250.834);
 107     cairo_line_to (cr, 441.87, 247.131);
 108     cairo_line_to (cr, 436.932, 246.203);
 109     cairo_line_to (cr, 430.5, 251.252);
 110     cairo_line_to (cr, 427.483, 250.751);
 111     cairo_line_to (cr, 427.26, 253.572);
 112     cairo_line_to (cr, 423.621, 255.539);
 113     cairo_line_to (cr, 423.824, 257.933);
 114     cairo_line_to (cr, 425.239, 259.582);
 115     cairo_line_to (cr, 422.385, 261.443);
 116     cairo_line_to (cr, 421.665, 260.53);
 117     cairo_line_to (cr, 419.238, 262.819);
 118     cairo_line_to (cr, 418.731, 257.849);
 119     cairo_line_to (cr, 419.72, 255.227);
 120     cairo_line_to (cr, 418.786, 250.258);
 121     cairo_line_to (cr, 405.685, 235.254);
 122     cairo_line_to (cr, 427.167, 215.127);
 123     cairo_line_to (cr, 413.852, 196.281);
 124     cairo_line_to (cr, 420.177, 192.379);
 125     cairo_line_to (cr, 419.885, 185.701);
 126     cairo_line_to (cr, 413.401, 185.428);
 127     cairo_line_to (cr, 407.985, 186.863);
 128     cairo_line_to (cr, 397.11, 189.112);
 129     cairo_line_to (cr, 390.505, 186.664);
 130     cairo_line_to (cr, 388.527, 183.694);
 131     cairo_line_to (cr, 336.503, 221.048);
 132     cairo_line_to (cr, 367.028, 241.656);
 133     cairo_line_to (cr, 365.103, 244.117);
 134     cairo_line_to (cr, 364.886, 246.792);
 135     cairo_line_to (cr, 361.467, 247.119);
 136     cairo_line_to (cr, 360.396, 245.525);
 137     cairo_line_to (cr, 356.336, 245.638);
 138     cairo_line_to (cr, 353.344, 242.122);
 139     cairo_line_to (cr, 347.149, 242.876);
 140     cairo_line_to (cr, 341.809, 256.652);
 141     cairo_line_to (cr, 342.232, 268.72);
 142     cairo_line_to (cr, 329.579, 269.095);
 143     cairo_line_to (cr, 327.001, 271.009);
 144     cairo_line_to (cr, 325.579, 275.598);
 145     cairo_line_to (cr, 318.941, 277.313);
 146     cairo_line_to (cr, 306.048, 277.231);
 147     cairo_line_to (cr, 304.071, 276.27);
 148     cairo_line_to (cr, 301.153, 277.175);
 149     cairo_line_to (cr, 293.52, 277.529);
 150     cairo_line_to (cr, 290.682, 281.947);
 151     cairo_line_to (cr, 293.911, 286.63);
 152     cairo_line_to (cr, 302.417, 290.547);
 153     cairo_line_to (cr, 303.521, 294.73);
 154     cairo_line_to (cr, 307.787, 298.088);
 155     cairo_line_to (cr, 311.718, 299.126);
 156     cairo_line_to (cr, 313.255, 302.146);
 157     cairo_line_to (cr, 314.6, 306.206);
 158     cairo_line_to (cr, 322.603, 308.96);
 159     cairo_line_to (cr, 321.718, 314.477);
 160     cairo_line_to (cr, 319.596, 320.341);
 161     cairo_line_to (cr, 300.689, 323.69);
 162     cairo_line_to (cr, 301.232, 326.789);
 163     cairo_line_to (cr, 293.622, 330);
 164     cairo_close_path (cr);
 165
 166     cairo_stroke (cr);
 167     return CAIRO_TEST_SUCCESS;
 168 }
 169
 170 int
 171 main (void)
 172 {
 173     return cairo_test (&test);
 174 }