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29 lines
1.6 KiB
C++
29 lines
1.6 KiB
C++
1 month ago
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#include <gtest/gtest.h>
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#include "clipper2/clipper.offset.h"
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#include "ClipFileLoad.h"
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TEST(Clipper2Tests, TestOffsettingOrientation1) {
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const Clipper2Lib::Paths64 subject = { Clipper2Lib::MakePath({ 0,0, 0,5, 5,5, 5,0 }) };
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Clipper2Lib::Paths64 solution = Clipper2Lib::InflatePaths(subject, 1,
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Clipper2Lib::JoinType::Round, Clipper2Lib::EndType::Polygon);
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ASSERT_EQ(solution.size(), 1);
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//when offsetting, output orientation should match input
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EXPECT_TRUE(Clipper2Lib::IsPositive(subject[0]) == Clipper2Lib::IsPositive(solution[0]));
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}
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TEST(Clipper2Tests, TestOffsettingOrientation2) {
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const Clipper2Lib::Paths64 subject = {
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Clipper2Lib::MakePath({20, 220, 280, 220, 280, 280, 20, 280}),
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Clipper2Lib::MakePath({0, 200, 0, 300, 300, 300, 300, 200})
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};
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Clipper2Lib::ClipperOffset co;
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co.ReverseSolution(true); // could also assign using a parameter in ClipperOffset's constructor
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co.AddPaths(subject, Clipper2Lib::JoinType::Round, Clipper2Lib::EndType::Polygon);
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Clipper2Lib::Paths64 solution;
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co.Execute(5, solution);
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ASSERT_EQ(solution.size(), 2);
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// When offsetting, output orientation should match input EXCEPT when ReverseSolution == true
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// However, input path ORDER may not match output path order. For example, order will change
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// whenever inner paths (holes) are defined before their container outer paths (as above).
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// And when offsetting multiple outer paths, their order will likely change too. Due to the
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// sweep-line algorithm used, paths with larger Y coordinates will likely be listed first.
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EXPECT_TRUE(Clipper2Lib::IsPositive(subject[1]) != Clipper2Lib::IsPositive(solution[0]));
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}
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