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#include "libslic3r/ClipperUtils.hpp"
#include "libslic3r/Geometry.hpp"
#include "libslic3r/Point.hpp"
#include "libslic3r/SVG.hpp"
#include <catch2/catch_test_macros.hpp>
#include <catch2/catch_approx.hpp>
#include <libslic3r/LayerRegion.hpp>
using namespace Slic3r;
using namespace Slic3r::Algorithm;
using namespace Catch;
constexpr bool export_svgs = false;
ExPolygon rectangle(const Point& origin, const int width, const int height) {
return {
origin,
origin + Point{width, 0},
origin + Point{width, height},
origin + Point{0, height},
};
}
struct LayerRegionFixture {
Surfaces surfaces{
Surface{
stBottomBridge,
rectangle({scaled(-1.0), scaled(0.0)}, scaled(1.0), scaled(1.0))
},
Surface{
stBottomBridge,
rectangle({scaled(0.0), scaled(0.0)}, scaled(1.0), scaled(1.0))
},
Surface{
stBottomBridge,
rectangle({scaled(-3.0), scaled(0.0)}, scaled(1.0), scaled(1.0))
}
};
ExPolygons shells{{
rectangle({scaled(-1.0), scaled(1.0)}, scaled(3.0), scaled(1.0))
}};
ExPolygons sparse {{
rectangle({scaled(-2.0), scaled(-1.0)}, scaled(1.0), scaled(3.0))
}};
const float scaled_spacing{scaled(0.3)};
static constexpr const float expansion_step = scaled<float>(0.1);
static constexpr const size_t max_nr_expansion_steps = 5;
const float closing_radius = 0.55f * 0.65f * 1.05f * scaled_spacing;
const int shells_expansion_depth = scaled(0.6);
const RegionExpansionParameters expansion_params_into_solid_infill = RegionExpansionParameters::build(
shells_expansion_depth,
expansion_step,
max_nr_expansion_steps
);
const int sparse_expansion_depth = scaled(0.3);
const RegionExpansionParameters expansion_params_into_sparse_infill = RegionExpansionParameters::build(
sparse_expansion_depth,
expansion_step,
max_nr_expansion_steps
);
std::vector<ExpansionZone> expansion_zones{
ExpansionZone{
std::move(shells),
expansion_params_into_solid_infill,
},
ExpansionZone{
std::move(sparse),
expansion_params_into_sparse_infill,
}
};
};
TEST_CASE_METHOD(LayerRegionFixture, "test the surface expansion", "[LayerRegion]") {
const double custom_angle{1.234f};
const Surfaces result{expand_merge_surfaces(
surfaces, stBottomBridge,
expansion_zones,
closing_radius,
custom_angle
)};
if constexpr (export_svgs) {
SVG svg("general_expansion.svg", BoundingBox{
Point{scaled(-3.0), scaled(-1.0)},
Point{scaled(2.0), scaled(2.0)}
});
svg.draw(surfaces, "blue");
svg.draw(expansion_zones[0].expolygons, "green");
svg.draw(expansion_zones[1].expolygons, "red");
svg.draw_outline(result, "black", "", scale_(0.01));
}
REQUIRE(result.size() == 2);
CHECK(result.at(0).bridge_angle == Approx(custom_angle));
CHECK(result.at(1).bridge_angle == Approx(custom_angle));
CHECK(result.at(0).expolygon.contour.size() == 22);
CHECK(result.at(1).expolygon.contour.size() == 14);
// These lines in the polygons should correspond to the expansion depth.
CHECK(result.at(0).expolygon.contour.lines().at(2).length() == shells_expansion_depth);
CHECK(result.at(1).expolygon.contour.lines().at(7).length() == sparse_expansion_depth);
CHECK(result.at(1).expolygon.contour.lines().at(11).length() == sparse_expansion_depth);
CHECK(intersection_ex({result.at(0).expolygon}, expansion_zones[0].expolygons).size() == 0);
CHECK(intersection_ex({result.at(0).expolygon}, expansion_zones[1].expolygons).size() == 0);
CHECK(intersection_ex({result.at(1).expolygon}, expansion_zones[0].expolygons).size() == 0);
CHECK(intersection_ex({result.at(1).expolygon}, expansion_zones[1].expolygons).size() == 0);
}
TEST_CASE_METHOD(LayerRegionFixture, "test the bridge expansion with the bridge angle detection", "[LayerRegion]") {
Surfaces result{expand_bridges_detect_orientations(
surfaces,
expansion_zones,
closing_radius
)};
if constexpr (export_svgs) {
SVG svg("bridge_expansion.svg", BoundingBox{
Point{scaled(-3.0), scaled(-1.0)},
Point{scaled(2.0), scaled(2.0)}
});
svg.draw(surfaces, "blue");
svg.draw(expansion_zones[0].expolygons, "green");
svg.draw(expansion_zones[1].expolygons, "red");
svg.draw_outline(result, "black", "", scale_(0.01));
}
REQUIRE(result.size() == 2);
CHECK(std::fmod(result.at(1).bridge_angle, M_PI) == Approx(0.0));
CHECK(std::fmod(result.at(1).bridge_angle, M_PI) == Approx(0.0));
CHECK(result.at(0).expolygon.contour.size() == 22);
CHECK(result.at(1).expolygon.contour.size() == 14);
// These lines in the polygons should correspond to the expansion depth.
CHECK(result.at(0).expolygon.contour.lines().at(2).length() == shells_expansion_depth);
CHECK(result.at(1).expolygon.contour.lines().at(7).length() == sparse_expansion_depth);
CHECK(result.at(1).expolygon.contour.lines().at(11).length() == sparse_expansion_depth);
CHECK(intersection_ex({result.at(0).expolygon}, expansion_zones[0].expolygons).size() == 0);
CHECK(intersection_ex({result.at(0).expolygon}, expansion_zones[1].expolygons).size() == 0);
CHECK(intersection_ex({result.at(1).expolygon}, expansion_zones[0].expolygons).size() == 0);
CHECK(intersection_ex({result.at(1).expolygon}, expansion_zones[1].expolygons).size() == 0);
}
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