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[buffer] Fix calculation of the number of points. For an angle of 125 or more,

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no points in between were generated, which was erroneous.
Thanks to Menelaos for spotting and Adam for the calculation

This changes some of the unit test results, because in some cases a point in between
is generated now, creating a larger polygon
This commit is contained in:
Barend Gehrels
2015-03-08 18:08:43 +01:00
parent a3db6b2ad1
commit 64ee58ed46
6 changed files with 89 additions and 57 deletions
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test/algorithms/buffer/multi_polygon_buffer.cpp
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@@ -438,7 +438,7 @@ void test_all()
// (the change was irrelevant to this, so they succeeded earlier by luck).
// TODO: get_occupation/left_turns in combination with a u/u turn
test_one<multi_polygon_type, polygon_type>("rt_u7", rt_u7, join_round, end_flat, 35.6233, 1.0);
test_one<multi_polygon_type, polygon_type>("rt_u7_rough", rt_u7, join_round_rough, end_flat, 35.0483, 1.0);
test_one<multi_polygon_type, polygon_type>("rt_u7_rough", rt_u7, join_round_rough, end_flat, 35.1675, 1.0);
}
test_one<multi_polygon_type, polygon_type>("rt_u8", rt_u8, join_miter, end_flat, 70.9142, 1.0);