diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/miter-precision.c')
| -rw-r--r-- | libs/cairo-1.16.0/test/miter-precision.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/miter-precision.c b/libs/cairo-1.16.0/test/miter-precision.c new file mode 100644 index 0000000..3bcdde0 --- /dev/null +++ b/libs/cairo-1.16.0/test/miter-precision.c @@ -0,0 +1,72 @@ +/* + * Copyright © 2007 Keith Packard + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + * + * The Original Code is the cairo graphics library. + * + * The Initial Developer of the Original Code is Keith Packard + * + * Contributor(s): + * Keith Packard <keithp@keithp.com> + */ +#include "cairo-test.h" + +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + double xscale, yscale; + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + + cairo_set_source_rgb (cr, 0, 0, 0); + cairo_set_miter_limit (cr, 100000); + for (xscale = 1; xscale <= 1000; xscale += 999) + for (yscale = 1; yscale <= 1000; yscale += 999) + { + double max_scale = xscale > yscale ? xscale : yscale; + cairo_save (cr); + if (xscale > 1) + cairo_translate (cr, 50, 0); + if (yscale > 1) + cairo_translate (cr, 0, 50); + cairo_scale (cr, xscale, yscale); + cairo_set_line_width (cr, 10.0 / max_scale); + cairo_move_to (cr, 10.0 / xscale, 10.0 / yscale); + cairo_line_to (cr, 40.0 / xscale, 10.0 / yscale); + cairo_line_to (cr, 10.0 / xscale, 30.0 / yscale); + cairo_stroke (cr); + cairo_restore (cr); + } + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (miter_precision, + "test how cairo deals with small miters" + "\ncurrent code draws inappropriate bevels at times", + "stoke, stress", /* keywords */ + NULL, /* requirements */ + 120, 100, + NULL, draw) |