Grcov report - degenerate-rel-curve-to.c

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/*

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 * Copyright © 2005 Red Hat, Inc.

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 * Copyright © 2009 Chris Wilson

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 * Permission to use, copy, modify, distribute, and sell this software

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 * and its documentation for any purpose is hereby granted without

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 * fee, provided that the above copyright notice appear in all copies

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 * and that both that copyright notice and this permission notice

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 * appear in supporting documentation, and that the name of

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 * Red Hat, Inc. not be used in advertising or publicity pertaining to

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 * distribution of the software without specific, written prior

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 * permission. Red Hat, Inc. makes no representations about the

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 * suitability of this software for any purpose.  It is provided "as

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 * is" without express or implied warranty.

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 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS

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 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND

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 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,

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 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER

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 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION

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 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR

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 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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 * Author: Carl D. Worth <cworth@cworth.org>

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 *         Chris Wilson <chris@chris-wilson.co.uk>

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*/

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#include "cairo-test.h"

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#define SIZE 30

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/* Another attempt at avoiding unnecessary splines was made, where

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 * a curve-to that ended on the same point as it began were discarded.

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 * The same bug was made to rel-curve-to as well, hence this test.

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*/

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static cairo_test_status_t

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3

draw (cairo_t *cr, int width, int height)

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3

    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */

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3

    cairo_paint (cr);

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3

    cairo_set_line_width (cr, 1.0);

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3

    cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);

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3

    cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);

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3

    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */

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    /* entirely degenerate */

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3

    cairo_move_to (cr, 2.5, 2.5);

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3

    cairo_rel_curve_to (cr,

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			0., 0.,

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			0., 0.,

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			0., 0.);

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3

    cairo_stroke (cr);

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    /* horizontal */

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3

    cairo_move_to (cr, 5.5, 2.5);

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3

    cairo_rel_curve_to (cr,

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		         10., 0.,

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			-10., 0.,

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			 0., 0.);

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3

    cairo_stroke (cr);

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    /* vertical */

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3

    cairo_move_to (cr, 5.5, 2.5);

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3

    cairo_rel_curve_to (cr,

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		        0.,  10.,

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			0., -10.,

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			0.,   0.);

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3

    cairo_stroke (cr);

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3

    cairo_translate (cr, 15, 0);

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    /* horizontal/vertical */

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3

    cairo_move_to (cr, 5.5, 0.5);

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3

    cairo_rel_curve_to (cr,

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		        -6.,  0.,

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			 0., 10.,

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			 0.,  0.);

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3

    cairo_translate (cr, 10, 0);

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    /* vertical/horizontal */

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3

    cairo_move_to (cr, 5.5, 0.0);

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3

    cairo_rel_curve_to (cr,

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		        0., 11.,

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			5.,  0.,

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			0.,  0.);

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3

    cairo_stroke (cr);

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3

    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (degenerate_rel_curve_to,

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	    "Test optimization treating degenerate rel-curve-to as line-to",

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	    "path", /* keywords */

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	    NULL, /* requirements */

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40,

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5,

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	    NULL, draw)