cairo/test/rectilinear-miter-limit.c
Chris Wilson e90073f7dd [test] Build test suite into single binary.
Avoid calling libtool to link every single test case, by building just one
binary from all the sources.

This binary is then given the task of choosing tests to run (based on user
selection and individual test requirement), forking each test into its own
process and accumulating the results.
2008-10-31 12:30:11 +00:00

72 lines
2.7 KiB
C

/*
* Copyright © 2008 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Author: Carl D. Worth <cworth@cworth.org>
*/
#include "cairo-test.h"
#define LINE_WIDTH 10
#define PAD 2
#define WIDTH (PAD + LINE_WIDTH + PAD)
#define HEIGHT (WIDTH)
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_translate (cr, PAD, PAD);
/* Paint background white, then draw in black. */
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
cairo_paint (cr);
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
cairo_set_line_width (cr, LINE_WIDTH);
/* The default miter limit value of 10.0 guarantees that
* right-angle turns, (in fact, any angle greater than 11
* degrees), gets a miter rather than a bevel join. The
* rectilinear stroke optimization was originally written in a
* buggy way that did not respect the miter limit, (that is,
* inappropriately drawing miter joins when the miter limit would
* turn them into bevels). So we draw here with a miter limit of
* 1.0 to force all miter joins into bevels. */
cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
cairo_set_miter_limit (cr, 1.0);
cairo_move_to (cr, LINE_WIDTH / 2.0, LINE_WIDTH);
cairo_rel_line_to (cr, 0, - LINE_WIDTH / 2.0);
cairo_rel_line_to (cr, LINE_WIDTH / 2.0, 0);
cairo_stroke (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (rectilinear_miter_limit,
"Test that the rectilinear stroke optimization doesn't break cairo_set_miter_limit",
"miter, stroke, stress", /* keywords */
NULL, /* requirements */
WIDTH, HEIGHT,
NULL, draw)