/* * Copyright © 2007 Keith Packard * * This library is free software; you can redistribute it and/or * modify it either under the terms of the GNU Lesser General Public * License version 2.1 as published by the Free Software Foundation * (the "LGPL") or, at your option, under the terms of the Mozilla * Public License Version 1.1 (the "MPL"). If you do not alter this * notice, a recipient may use your version of this file under either * the MPL or the LGPL. * * You should have received a copy of the LGPL along with this library * in the file COPYING-LGPL-2.1; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * You should have received a copy of the MPL along with this library * in the file COPYING-MPL-1.1 * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY * OF ANY KIND, either express or implied. See the LGPL or the MPL for * the specific language governing rights and limitations. * * The Original Code is the cairo graphics library. * * The Initial Developer of the Original Code is Keith Packard * * Contributor(s): * Keith Packard */ #include "cairo-test.h" static cairo_test_draw_function_t draw; static const cairo_test_t test = { "miter-precision", "test how cairo deals with small miters" "\ncurrent code draws inappropriate bevels at times", 120, 100, draw }; static cairo_test_status_t draw (cairo_t *cr, int width, int height) { double xscale, yscale; cairo_set_source_rgb (cr, 1, 1, 1); cairo_paint (cr); cairo_set_source_rgb (cr, 0, 0, 0); cairo_set_miter_limit (cr, 100000); for (xscale = 1; xscale <= 1000; xscale += 999) for (yscale = 1; yscale <= 1000; yscale += 999) { double max_scale = xscale > yscale ? xscale : yscale; cairo_save (cr); if (xscale > 1) cairo_translate (cr, 50, 0); if (yscale > 1) cairo_translate (cr, 0, 50); cairo_scale (cr, xscale, yscale); cairo_set_line_width (cr, 10.0 / max_scale); cairo_move_to (cr, 10.0 / xscale, 10.0 / yscale); cairo_line_to (cr, 40.0 / xscale, 10.0 / yscale); cairo_line_to (cr, 10.0 / xscale, 30.0 / yscale); cairo_stroke (cr); cairo_restore (cr); } return CAIRO_TEST_SUCCESS; } int main (void) { return cairo_test (&test); }