68 lines
2.9 KiB
C++
68 lines
2.9 KiB
C++
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#include <catch2/catch.hpp>
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#include "libslic3r/Point.hpp"
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#include "libslic3r/Polygon.hpp"
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#include "libslic3r/ExPolygon.hpp"
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using namespace Slic3r;
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static inline bool points_close(const Point &p1, const Point &p2)
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{
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return (p1 - p2).cast<double>().norm() < SCALED_EPSILON;
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}
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static bool polygons_close_permuted(const Polygon &poly1, const Polygon &poly2, const std::vector<int> &permutation2)
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{
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if (poly1.size() != poly2.size() || poly1.size() != permutation2.size())
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return false;
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for (size_t i = 0; i < poly1.size(); ++ i)
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if (poly1[i] != poly2[permutation2[i]])
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return false;
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return true;
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}
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SCENARIO("Basics", "[ExPolygon]") {
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GIVEN("ccw_square") {
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Polygon ccw_square{ { 100, 100 }, { 200, 100 }, { 200, 200 }, { 100, 200 } };
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Polygon cw_hole_in_square{ { 140, 140 }, { 140, 160 }, { 160, 160 }, { 160, 140 } };
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ExPolygon expolygon { ccw_square, cw_hole_in_square };
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THEN("expolygon is valid") {
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REQUIRE(expolygon.is_valid());
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}
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THEN("expolygon area") {
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REQUIRE(expolygon.area() == Approx(100*100-20*20));
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}
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WHEN("Expolygon scaled") {
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ExPolygon expolygon2 = expolygon;
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expolygon2.scale(2.5);
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REQUIRE(expolygon.contour.size() == expolygon2.contour.size());
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REQUIRE(expolygon.holes.size() == 1);
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REQUIRE(expolygon2.holes.size() == 1);
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for (size_t i = 0; i < expolygon.contour.size(); ++ i)
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REQUIRE(points_close(expolygon.contour[i] * 2.5, expolygon2.contour[i]));
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for (size_t i = 0; i < expolygon.holes.front().size(); ++ i)
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REQUIRE(points_close(expolygon.holes.front()[i] * 2.5, expolygon2.holes.front()[i]));
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}
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WHEN("Expolygon translated") {
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ExPolygon expolygon2 = expolygon;
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expolygon2.translate(10, -5);
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REQUIRE(expolygon.contour.size() == expolygon2.contour.size());
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REQUIRE(expolygon.holes.size() == 1);
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REQUIRE(expolygon2.holes.size() == 1);
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for (size_t i = 0; i < expolygon.contour.size(); ++ i)
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REQUIRE(points_close(expolygon.contour[i] + Point(10, -5), expolygon2.contour[i]));
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for (size_t i = 0; i < expolygon.holes.front().size(); ++ i)
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REQUIRE(points_close(expolygon.holes.front()[i] + Point(10, -5), expolygon2.holes.front()[i]));
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}
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WHEN("Expolygon rotated around point") {
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ExPolygon expolygon2 = expolygon;
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expolygon2.rotate(M_PI / 2, Point(150, 150));
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REQUIRE(expolygon.contour.size() == expolygon2.contour.size());
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REQUIRE(expolygon.holes.size() == 1);
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REQUIRE(expolygon2.holes.size() == 1);
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REQUIRE(polygons_close_permuted(expolygon2.contour, expolygon.contour, { 1, 2, 3, 0}));
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REQUIRE(polygons_close_permuted(expolygon2.holes.front(), expolygon.holes.front(), { 3, 0, 1, 2}));
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}
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}
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}
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