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Diffstat (limited to 'test/skew-extreme.c')
| -rw-r--r-- | test/skew-extreme.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/test/skew-extreme.c b/test/skew-extreme.c deleted file mode 100644 index 69299a86c..000000000 --- a/test/skew-extreme.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Copyright © 2007 Red Hat, Inc. - * - * 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: Carl Worth <cworth@cworth.org> - */ - -#include "cairo-test.h" - -/* This test case is designed to exercise the following bug: - * - * Skew transforms were broken by the cairo update in December - * https://bugzilla.mozilla.org/show_bug.cgi?id=373632 - * - * What's happening is that the rectangle is being skewed into the - * following shape: - * - * a__b - * \ \ - * \ \ - * \ \ - * \ \ - * \ \ - * d\_\c - * - * and the bug is that _cairo_traps_tessellate_convex_quad is - * comparing b.x as less then d.x and therfore determining that the bc - * edge is left of the ad edge. The fix is simply to compare c.x to - * d.x instead of b.x to d.x . - */ - -#define PAD 2 -#define LINE_WIDTH 10 -#define LINE_LENGTH (2 * LINE_WIDTH) -#define SKEW_FACTOR 5.0 -#define WIDTH (PAD + (LINE_LENGTH * SKEW_FACTOR) + LINE_WIDTH + PAD) -#define HEIGHT (PAD + LINE_WIDTH + (LINE_LENGTH * SKEW_FACTOR) + LINE_WIDTH + PAD) - -static cairo_test_status_t -draw (cairo_t *cr, int width, int height) -{ - /* We draw in the default black, so paint white first. */ - cairo_save (cr); - cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */ - cairo_paint (cr); - cairo_restore (cr); - - cairo_translate (cr, PAD, PAD); - - cairo_set_line_width (cr, LINE_WIDTH); - cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT); - - cairo_save (cr); - { - cairo_matrix_t skew_x = { - 1.0, 0.0, - SKEW_FACTOR, 1.0, - 0.0, 0.0 - }; - - cairo_translate (cr, LINE_WIDTH / 2.0, 0.0); - - cairo_transform (cr, &skew_x); - - cairo_move_to (cr, 0.0, 0.0); - cairo_line_to (cr, 0.0, LINE_LENGTH); - cairo_stroke (cr); - } - cairo_restore (cr); - - cairo_translate (cr, 0.0, LINE_WIDTH); - - cairo_save (cr); - { - cairo_matrix_t skew_y = { - 1.0, SKEW_FACTOR, - 0.0, 1.0, - 0.0, 0.0 - }; - - cairo_translate (cr, 0.0, LINE_WIDTH / 2.0); - - cairo_transform (cr, &skew_y); - - cairo_move_to (cr, 0.0, 0.0); - cairo_line_to (cr, LINE_LENGTH, 0.0); - cairo_stroke (cr); - } - cairo_restore (cr); - - return CAIRO_TEST_SUCCESS; -} - -CAIRO_TEST (skew_extreme, - "Test cases of extreme skew.", - "transform, stroke", /* keywords */ - NULL, /* requirements */ - WIDTH, HEIGHT, - NULL, draw) |