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/*
* Copyright © 2011 Intel Corporation
*
* 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: Chris Wilson <chris@chris-wilson.co.uk>
*/
/*
* A variation on
*
* https://bugzilla.mozilla.org/show_bug.cgi?id=668921
*
* The issue is that we failed to tighten the initial approximated bounds
* after tessellating the path.
*/
#include "cairo-test.h"
#define SIZE 60
static void
triangle (cairo_t *cr, double x, double y, double h)
{
cairo_move_to (cr, x, y);
cairo_line_to (cr, x+h/2, y+h);
cairo_line_to (cr, x+h, y);
cairo_close_path (cr);
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_set_source_rgb (cr, 1, 0, 1);
cairo_paint (cr);
/* Set an unbounded operator so that we can see how accurate the bounded
* extents were.
*/
cairo_set_operator (cr, CAIRO_OPERATOR_IN);
cairo_set_source_rgb (cr, 1, 1, 1);
/* Wind several triangles together that reduce to nothing */
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
triangle (cr, 0, 0, SIZE);
triangle (cr, 0, 0, SIZE);
cairo_fill (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (big_empty_triangle,
"Tests that we tighten the bounds after tessellation.",
"fill", /* keywords */
NULL, /* requirements */
SIZE, SIZE,
NULL, draw)
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