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fd75d83fd1
It now simplifies first and removes second point if necessary. Also it is defensive such that generation is stopped if length is 0. Including unit tests.
74 lines
3.7 KiB
C++
74 lines
3.7 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Unit Test
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// Copyright (c) 2012-2014 Barend Gehrels, Amsterdam, the Netherlands.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <test_buffer.hpp>
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#include <boost/geometry/multi/geometries/multi_geometries.hpp>
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static std::string const simplex = "MULTILINESTRING((0 0,4 5),(5 4,10 0))";
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static std::string const two_bends = "MULTILINESTRING((0 0,4 5,7 4,10 6),(1 5,5 9,8 6))";
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static std::string const turn_inside = "MULTILINESTRING((0 0,4 5,7 4,10 6),(1 5,5 9,8 6),(0 4,-2 6))";
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static std::string const degenerate0 = "MULTILINESTRING()";
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static std::string const degenerate1 = "MULTILINESTRING((5 5))";
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static std::string const degenerate2 = "MULTILINESTRING((5 5),(9 9))";
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static std::string const degenerate3 = "MULTILINESTRING((5 5),(9 9),(4 10))";
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static std::string const degenerate4 = "MULTILINESTRING((5 5,5 5),(9 9,9 9,10 10,9 9,9 9,9 9),(4 10,4 10,3 11,4 12,3 11,4 10,4 10))";
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template <typename P>
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void test_all()
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{
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typedef bg::model::linestring<P> linestring;
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typedef bg::model::multi_linestring<linestring> multi_linestring_type;
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typedef bg::model::polygon<P> polygon;
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bg::strategy::buffer::join_miter join_miter;
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bg::strategy::buffer::join_round join_round(100);
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bg::strategy::buffer::join_round_by_divide join_round_by_divide(4);
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bg::strategy::buffer::end_flat end_flat;
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bg::strategy::buffer::end_round end_round(100);
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// Round joins / round ends
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test_one<multi_linestring_type, polygon>("simplex", simplex, join_round, end_round, 49.0217, 1.5, 1.5);
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test_one<multi_linestring_type, polygon>("two_bends", two_bends, join_round, end_round, 74.73, 1.5, 1.5);
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test_one<multi_linestring_type, polygon>("turn_inside", turn_inside, join_round, end_round, 86.3313, 1.5, 1.5);
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test_one<multi_linestring_type, polygon>("two_bends_asym", two_bends, join_round, end_round, 58.3395, 1.5, 0.75);
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// Round joins / flat ends:
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test_one<multi_linestring_type, polygon>("simplex", simplex, join_round, end_flat, 38.2623, 1.5, 1.5);
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test_one<multi_linestring_type, polygon>("two_bends", two_bends, join_round, end_flat, 64.6217, 1.5, 1.5);
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// TODO this should be fixed test_one<multi_linestring_type, polygon>("turn_inside", turn_inside, join_round, end_flat, 99, 1.5, 1.5);
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test_one<multi_linestring_type, polygon>("two_bends_asym", two_bends, join_round, end_flat, 52.3793, 1.5, 0.75);
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// This one is far from done:
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// test_one<multi_linestring_type, polygon>("turn_inside_asym_neg", turn_inside, join_round, end_flat, 99, +1.5, -1.0);
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// Miter / divide joins, various ends
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test_one<multi_linestring_type, polygon>("two_bends", two_bends, join_round_by_divide, end_flat, 64.6217, 1.5, 1.5);
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test_one<multi_linestring_type, polygon>("two_bends", two_bends, join_miter, end_flat, 65.1834, 1.5, 1.5);
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test_one<multi_linestring_type, polygon>("two_bends", two_bends, join_miter, end_round, 75.2917, 1.5, 1.5);
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test_one<multi_linestring_type, polygon>("degenerate0", degenerate0, join_round, end_round, 0.0, 3.0, 3.0);
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test_one<multi_linestring_type, polygon>("degenerate1", degenerate1, join_round, end_round, 28.2503, 3.0, 3.0);
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test_one<multi_linestring_type, polygon>("degenerate2", degenerate2, join_round, end_round, 56.0457, 3.0, 3.0);
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test_one<multi_linestring_type, polygon>("degenerate3", degenerate3, join_round, end_round, 80.4531, 3.0, 3.0);
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test_one<multi_linestring_type, polygon>("degenerate4", degenerate4, join_round, end_round, 104.3142, 3.0, 3.0);
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}
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int test_main(int, char* [])
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{
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test_all<bg::model::point<double, 2, bg::cs::cartesian> >();
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return 0;
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}
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