blob: a573f56a5be28de499f5fc3ece28c63eb55bff31 [file] [log] [blame]
/*
* Copyright © 2006 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of the
* copyright holders not be used in advertising or publicity
* pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Author: Carl D. Worth <cworth@cworth.org>
*/
/* Test case for bug #8379:
*
* infinite loop when stroking
* https://bugs.freedesktop.org/show_bug.cgi?id=8379
*/
#include "cairo-test.h"
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
/* Paint white, then draw in black. */
cairo_set_source_rgb (cr, 1, 1, 1); /* white */
cairo_paint (cr);
cairo_set_source_rgb (cr, 0, 0, 0); /* black */
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
/* scaling 2 times causes a slight rounding error in the ctm.
* Without that, the bug doesn't happen. */
cairo_scale (cr, 20 / 100., 20 / 100.);
cairo_scale (cr, 1. / 20, 1. / 20);
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
cairo_set_line_width (cr, 20);
cairo_translate (cr, -18300, -13200);
cairo_new_path (cr);
cairo_move_to (cr, 18928, 13843);
cairo_line_to (cr, 18500, 13843);
cairo_line_to (cr, 18500, 13400);
cairo_line_to (cr, 18928, 13400);
cairo_line_to (cr, 18928, 13843);
cairo_stroke (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (infinite_join,
"Test case for infinite loop when stroking with round joins",
"stroke", /* keywords */
NULL,
8, 8,
NULL, draw)