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e90073f7dd
Avoid calling libtool to link every single test case, by building just one binary from all the sources. This binary is then given the task of choosing tests to run (based on user selection and individual test requirement), forking each test into its own process and accumulating the results.
105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
/*
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* Copyright © 2007 Red Hat, Inc.
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*
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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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*
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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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*
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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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*
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* Author: Carl D. Worth <cworth@cworth.org>
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*/
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#include "cairo-test.h"
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#define SIZE 20
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#define PAD 5
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#define WIDTH (PAD + 3 * (PAD + SIZE) + PAD)
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#define HEIGHT (PAD + SIZE + PAD)
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/* We're demonstrating here a bug originally reported by Benjamin Otte
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* on the cairo mailing list here, (after he ran into this problem
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* with various flash animations):
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*
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* [cairo] Assertion `i < pen->num_vertices' failed in 1.4.10
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* http://lists.cairographics.org/archives/cairo/2007-August/011282.html
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*
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* The problem shows up with an extreme transformation matrix that
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* collapses the pen to a single line, (which means that
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* _cairo_slope_compare cannot handle adjacent vertices in the pen
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* since they have parallel slope).
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*
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* This test case tests degenerate pens in several directions and uses
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* round caps to force the stroking code to attempt to walk around the
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* pen doing slope comparisons.
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*/
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height)
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{
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cairo_set_source_rgb (cr, 1, 1, 1);
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cairo_paint (cr);
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cairo_set_source_rgb (cr, 0, 0, 0);
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cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
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cairo_translate (cr, PAD, PAD);
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/* First compress the pen to a vertical line. */
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cairo_rectangle (cr, 0, 0, SIZE, SIZE);
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cairo_curve_to (cr, SIZE / 2, 0, SIZE, SIZE / 2, SIZE, SIZE);
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cairo_save (cr);
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{
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cairo_scale (cr, 0.000001, 1.0);
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cairo_stroke (cr);
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}
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cairo_restore (cr);
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cairo_translate (cr, PAD + SIZE, 0);
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/* Then compress the pen to a horizontal line. */
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cairo_rectangle (cr, 0, 0, SIZE, SIZE);
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cairo_curve_to (cr, SIZE / 2, 0, SIZE, SIZE / 2, SIZE, SIZE);
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cairo_save (cr);
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{
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cairo_scale (cr, 1.0, 0.000001);
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cairo_stroke (cr);
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}
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cairo_restore (cr);
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cairo_translate (cr, PAD + SIZE, 0);
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/* Finally a line at an angle. */
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cairo_rectangle (cr, 0, 0, SIZE, SIZE);
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cairo_curve_to (cr, SIZE / 2, 0, SIZE, SIZE / 2, SIZE, SIZE);
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cairo_save (cr);
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{
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cairo_rotate (cr, M_PI / 4.0);
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cairo_scale (cr, 0.000001, 1.0);
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cairo_stroke (cr);
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}
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cairo_restore (cr);
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return CAIRO_TEST_SUCCESS;
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}
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CAIRO_TEST (degenerate_pen,
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"Test round joins with a pen that's transformed to a line",
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"degenerate", /* keywords */
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NULL, /* requirements */
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WIDTH, HEIGHT,
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NULL, draw)
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