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Diffstat (limited to 'test/degenerate-pen.c')
| -rw-r--r-- | test/degenerate-pen.c | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/test/degenerate-pen.c b/test/degenerate-pen.c deleted file mode 100644 index ec8bd198a..000000000 --- a/test/degenerate-pen.c +++ /dev/null @@ -1,105 +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 D. Worth <cworth@cworth.org> - */ - -#include "cairo-test.h" - -#define SIZE 20 -#define PAD 5 -#define WIDTH (PAD + 3 * (PAD + SIZE) + PAD) -#define HEIGHT (PAD + SIZE + PAD) - -/* We're demonstrating here a bug originally reported by Benjamin Otte - * on the cairo mailing list here, (after he ran into this problem - * with various flash animations): - * - * [cairo] Assertion `i < pen->num_vertices' failed in 1.4.10 - * http://lists.cairographics.org/archives/cairo/2007-August/011282.html - * - * The problem shows up with an extreme transformation matrix that - * collapses the pen to a single line, (which means that - * _cairo_slope_compare cannot handle adjacent vertices in the pen - * since they have parallel slope). - * - * This test case tests degenerate pens in several directions and uses - * round caps to force the stroking code to attempt to walk around the - * pen doing slope comparisons. - */ - -static cairo_test_status_t -draw (cairo_t *cr, int width, int height) -{ - cairo_set_source_rgb (cr, 1, 1, 1); - cairo_paint (cr); - - cairo_set_source_rgb (cr, 0, 0, 0); - cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND); - - cairo_translate (cr, PAD, PAD); - - /* First compress the pen to a vertical line. */ - cairo_rectangle (cr, 0, 0, SIZE, SIZE); - cairo_curve_to (cr, SIZE / 2, 0, SIZE, SIZE / 2, SIZE, SIZE); - cairo_save (cr); - { - cairo_scale (cr, 0.000001, 1.0); - cairo_stroke (cr); - } - cairo_restore (cr); - - cairo_translate (cr, PAD + SIZE, 0); - - /* Then compress the pen to a horizontal line. */ - cairo_rectangle (cr, 0, 0, SIZE, SIZE); - cairo_curve_to (cr, SIZE / 2, 0, SIZE, SIZE / 2, SIZE, SIZE); - cairo_save (cr); - { - cairo_scale (cr, 1.0, 0.000001); - cairo_stroke (cr); - } - cairo_restore (cr); - - cairo_translate (cr, PAD + SIZE, 0); - - /* Finally a line at an angle. */ - cairo_rectangle (cr, 0, 0, SIZE, SIZE); - cairo_curve_to (cr, SIZE / 2, 0, SIZE, SIZE / 2, SIZE, SIZE); - cairo_save (cr); - { - cairo_rotate (cr, M_PI / 4.0); - cairo_scale (cr, 0.000001, 1.0); - cairo_stroke (cr); - } - cairo_restore (cr); - - return CAIRO_TEST_SUCCESS; -} - -CAIRO_TEST (degenerate_pen, - "Test round joins with a pen that's transformed to a line", - "degenerate", /* keywords */ - NULL, /* requirements */ - WIDTH, HEIGHT, - NULL, draw) |