diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/degenerate-rel-curve-to.c')
-rw-r--r-- | libs/cairo-1.16.0/test/degenerate-rel-curve-to.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/degenerate-rel-curve-to.c b/libs/cairo-1.16.0/test/degenerate-rel-curve-to.c new file mode 100644 index 0000000..d7c0523 --- /dev/null +++ b/libs/cairo-1.16.0/test/degenerate-rel-curve-to.c @@ -0,0 +1,99 @@ +/* + * Copyright © 2005 Red Hat, Inc. + * Copyright © 2009 Chris Wilson + * + * 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 + * Red Hat, Inc. not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Red Hat, Inc. makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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> + * Chris Wilson <chris@chris-wilson.co.uk> + */ + +#include "cairo-test.h" + +#define SIZE 30 + +/* Another attempt at avoiding unnecessary splines was made, where + * a curve-to that ended on the same point as it began were discarded. + * The same bug was made to rel-curve-to as well, hence this test. + */ +static cairo_test_status_t +draw (cairo_t *cr, int width, int height) +{ + cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */ + cairo_paint (cr); + + cairo_set_line_width (cr, 1.0); + cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT); + cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL); + cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */ + + /* entirely degenerate */ + cairo_move_to (cr, 2.5, 2.5); + cairo_rel_curve_to (cr, + 0., 0., + 0., 0., + 0., 0.); + cairo_stroke (cr); + + /* horizontal */ + cairo_move_to (cr, 5.5, 2.5); + cairo_rel_curve_to (cr, + 10., 0., + -10., 0., + 0., 0.); + cairo_stroke (cr); + + /* vertical */ + cairo_move_to (cr, 5.5, 2.5); + cairo_rel_curve_to (cr, + 0., 10., + 0., -10., + 0., 0.); + cairo_stroke (cr); + + cairo_translate (cr, 15, 0); + + /* horizontal/vertical */ + cairo_move_to (cr, 5.5, 0.5); + cairo_rel_curve_to (cr, + -6., 0., + 0., 10., + 0., 0.); + + cairo_translate (cr, 10, 0); + + /* vertical/horizontal */ + cairo_move_to (cr, 5.5, 0.0); + cairo_rel_curve_to (cr, + 0., 11., + 5., 0., + 0., 0.); + cairo_stroke (cr); + + return CAIRO_TEST_SUCCESS; +} + +CAIRO_TEST (degenerate_rel_curve_to, + "Test optimization treating degenerate rel-curve-to as line-to", + "path", /* keywords */ + NULL, /* requirements */ + 40, + 5, + NULL, draw) |