From 37d586d7016512f7b4aa3da076cadbddfc9ca428 Mon Sep 17 00:00:00 2001 From: artemp Date: Tue, 12 Jan 2016 15:08:02 +0000 Subject: [PATCH] Unit tests - add SVG path parsing tests --- test/unit/svg/svg_path_parser_test.cpp | 176 +++++++++++++++++++++++++ 1 file changed, 176 insertions(+) create mode 100644 test/unit/svg/svg_path_parser_test.cpp diff --git a/test/unit/svg/svg_path_parser_test.cpp b/test/unit/svg/svg_path_parser_test.cpp new file mode 100644 index 000000000..8873399a0 --- /dev/null +++ b/test/unit/svg/svg_path_parser_test.cpp @@ -0,0 +1,176 @@ +/***************************************************************************** + * + * This file is part of Mapnik (c++ mapping toolkit) + * + * Copyright (C) 2015 Artem Pavlenko + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + *****************************************************************************/ + +#include "catch.hpp" + +#include +#include +#include +#include +#include + +namespace { + +template +struct vertex_equal +{ + template + bool operator() (T const& lhs, T const& rhs) const + { + static const double eps = 1.0 / std::pow(10,N); + return (std::fabs(std::get<0>(lhs) - std::get<0>(rhs)) < eps) + && (std::fabs(std::get<1>(lhs) - std::get<1>(rhs)) < eps) + && std::get<2>(lhs) == std::get<2>(rhs); + } +}; + +template +void test_path_parser(std::string const& str, Expected const& expected) +{ + using namespace mapnik::svg; + mapnik::svg_path_ptr marker_path(std::make_shared()); + vertex_stl_adapter stl_storage(marker_path->source()); + svg_path_adapter svg_path(stl_storage); + svg_converter_type svg(svg_path, marker_path->attributes()); + + CHECK(mapnik::svg::parse_path(str.c_str(), svg)); + double x,y; + unsigned cmd; + auto & p = svg.storage(); + std::vector> vec; + while ((cmd = p.vertex(&x,&y)) != mapnik::SEG_END) + { + vec.emplace_back(x, y, cmd); + //std::cerr << "std::make_tuple(" << x << ", " << y << ", " << cmd << ")," << std::endl; + } + REQUIRE(std::equal(expected.begin(),expected.end(), vec.begin(), vertex_equal<3>())); +} +} // anonymous ns + +TEST_CASE("SVG path parser") { + + SECTION("MoveTo/LineTo") + { + std::string str = "M 100 100 L 300 100 L 200 300 z"; + std::string str2 = "M100,100L300,100L200,300z"; + std::string str3 = "M100,100l200 0L200,300z"; + std::vector> expected = { + std::make_tuple(100, 100, 1), + std::make_tuple(300, 100, 2), + std::make_tuple(200, 300, 2), + std::make_tuple(100, 100, 79) }; + test_path_parser(str, expected); + test_path_parser(str2, expected); + test_path_parser(str3, expected); + } + + SECTION("MoveTo/HLine/VLine") + { + std::string str = "M100 100H300V200z"; + std::string str2 = "M100,100h200v100z"; + std::vector> expected = { + std::make_tuple(100, 100, 1), + std::make_tuple(300, 100, 2), + std::make_tuple(300, 200, 2), + std::make_tuple(100, 100, 79) + }; + test_path_parser(str, expected); + test_path_parser(str2, expected); + } + + SECTION("Arcs") + { + std::string str = "M300,200 h-150 a150,150 0 1,0 150,-150 z"; + + std::vector> expected = { + std::make_tuple(300, 200, 1), + std::make_tuple(150, 200, 2), + std::make_tuple(150, 282.843, 4), + std::make_tuple(217.157, 350, 4), + std::make_tuple(300, 350, 4), + std::make_tuple(382.843, 350, 4), + std::make_tuple(450, 282.843, 4), + std::make_tuple(450, 200, 4), + std::make_tuple(450, 117.157, 4), + std::make_tuple(382.843, 50, 4), + std::make_tuple(300, 50, 4), + std::make_tuple(300, 200, 79)}; + test_path_parser(str, expected); + } + + + SECTION("Arcs 2") + { + std::string str = "M275,175 v-150 a150,150 0 0,0 -150,150 z"; + + std::vector> expected = { + std::make_tuple(275, 175, 1), + std::make_tuple(275, 25, 2), + std::make_tuple(192.157, 25, 4), + std::make_tuple(125, 92.1573, 4), + std::make_tuple(125, 175, 4), + std::make_tuple(275, 175, 79)}; + test_path_parser(str, expected); + } + + SECTION("Arcs 3") + { + std::string str = "M600,350 l 50,-25" + "a25,25 -30 0,1 50,-25 l 50,-25" + "a25,50 -30 0,1 50,-25 l 50,-25" + "a25,75 -30 0,1 50,-25 l 50,-25" + "a25,100 -30 0,1 50,-25 l 50,-25"; + + std::vector> expected = { + std::make_tuple(600, 350, 1), + std::make_tuple(650, 325, 2), + std::make_tuple(643.096, 311.193, 4), + std::make_tuple(648.693, 294.404, 4), + std::make_tuple(662.5, 287.5, 4), + std::make_tuple(676.307, 280.596, 4), + std::make_tuple(693.096, 286.193, 4), + std::make_tuple(700, 300, 4), + std::make_tuple(750, 275, 2), + std::make_tuple(734.991, 248.079, 4), + std::make_tuple(734.017, 220.66, 4), + std::make_tuple(747.825, 213.756, 4), + std::make_tuple(761.632, 206.852, 4), + std::make_tuple(784.991, 223.079, 4), + std::make_tuple(800, 250, 4), + std::make_tuple(850, 225, 2), + std::make_tuple(827.153, 184.812, 4), + std::make_tuple(819.825, 146.636, 4), + std::make_tuple(833.632, 139.733, 4), + std::make_tuple(847.44, 132.829, 4), + std::make_tuple(877.153, 159.812, 4), + std::make_tuple(900, 200, 4), + std::make_tuple(950, 175, 2), + std::make_tuple(919.382, 121.506, 4), + std::make_tuple(905.754, 72.5436, 4), + std::make_tuple(919.561, 65.64, 4), + std::make_tuple(933.368, 58.7365, 4), + std::make_tuple(969.382, 96.5057, 4), + std::make_tuple(1000, 150, 4), + std::make_tuple(1050, 125, 2)}; + test_path_parser(str, expected); + } +}