Grcov report - shape-general-convex.c

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/*

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 * Copyright © 2011 Intel Corporation

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 * Permission is hereby granted, free of charge, to any person

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 * obtaining a copy of this software and associated documentation

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 * files (the "Software"), to deal in the Software without

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 * restriction, including without limitation the rights to use, copy,

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 * modify, merge, publish, distribute, sublicense, and/or sell copies

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 * of the Software, and to permit persons to whom the Software is

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 * furnished to do so, subject to the following conditions:

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 * The above copyright notice and this permission notice shall be

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 * included in all copies or substantial portions of the Software.

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

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 * SOFTWARE.

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

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*/

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/* A general convex shape with a twist. */

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#include "cairo-test.h"

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#define SIZE		(100)

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#define PAD 4

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static void

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limacon (cairo_t *cr, double a, double b, double radius)

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    int i;

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    cairo_save (cr);

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    cairo_translate (cr, PAD, 0);

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2166

    for (i = 0; i < 360; i++) {

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2160

	double theta = i * M_PI / 180;

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2160

	double r = b + a * cos (theta);

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2160

	double x = radius * r * cos (theta);

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2160

	double y = radius * r * sin (theta);

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2160

	cairo_line_to (cr, x, y);

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    cairo_close_path (cr);

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    cairo_restore (cr);

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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, 1, 1);

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    cairo_paint (cr);

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    cairo_save (cr);

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3

    cairo_translate (cr, 2*PAD, PAD);

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3

    cairo_translate (cr, SIZE/2, SIZE/2);

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    limacon (cr, 1, .5, SIZE/3); /* trivia, this is a trisectrix */

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    cairo_set_source_rgb (cr, 1, 0, 0);

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    cairo_fill_preserve (cr);

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3

    cairo_set_source_rgb (cr, 0, 0, 0);

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3

    cairo_stroke (cr);

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3

    cairo_scale (cr, -1, 1);

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    limacon (cr, 1, .5, SIZE/3); /* trivia, this is a trisectrix */

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    cairo_set_source_rgb (cr, 0, 0, 1);

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    cairo_fill_preserve (cr);

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    cairo_set_source_rgb (cr, 0, 0, 0);

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    cairo_stroke (cr);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (shape_general_convex,

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	    "A general shape that is not as convex as it first appears",

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	    "fill,stroke", /* keywords */

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	    NULL, /* requirements */

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	    SIZE+4*PAD, SIZE+4*PAD,

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	    NULL, draw)