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Ported remove_collinear(Polygon) and test_polygon from upstream slic3r.

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bubnikv 2019-10-15 18:08:32 +02:00
parent de45be5f29
commit abe856f9fe
5 changed files with 90 additions and 2 deletions
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44
tests/libslic3r/test_polygon.cpp Normal file
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#include <catch2/catch.hpp>
#include "libslic3r/Point.hpp"
#include "libslic3r/Polygon.hpp"
using namespace Slic3r;
// This test currently only covers remove_collinear_points.
// All remaining tests are to be ported from xs/t/06_polygon.t
Slic3r::Points collinear_circle({
Slic3r::Point::new_scale(0, 0), // 3 collinear points at beginning
Slic3r::Point::new_scale(10, 0),
Slic3r::Point::new_scale(20, 0),
Slic3r::Point::new_scale(30, 10),
Slic3r::Point::new_scale(40, 20), // 2 collinear points
Slic3r::Point::new_scale(40, 30),
Slic3r::Point::new_scale(30, 40), // 3 collinear points
Slic3r::Point::new_scale(20, 40),
Slic3r::Point::new_scale(10, 40),
Slic3r::Point::new_scale(-10, 20),
Slic3r::Point::new_scale(-20, 10),
Slic3r::Point::new_scale(-20, 0), // 3 collinear points at end
Slic3r::Point::new_scale(-10, 0),
Slic3r::Point::new_scale(-5, 0)
});
SCENARIO("Remove collinear points from Polygon") {
GIVEN("Polygon with collinear points"){
Slic3r::Polygon p(collinear_circle);
WHEN("collinear points are removed") {
remove_collinear(p);
THEN("Leading collinear points are removed") {
REQUIRE(p.points.front() == Slic3r::Point::new_scale(20, 0));
}
THEN("Trailing collinear points are removed") {
REQUIRE(p.points.back() == Slic3r::Point::new_scale(-20, 0));
}
THEN("Number of remaining points is correct") {
REQUIRE(p.points.size() == 7);
}
}
}
}