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Test case for issue when Arachne produce closed ExtrusionLine that have different the first and the last point.

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This commit is contained in:
Lukáš Hejl 2022-07-21 20:06:58 +02:00
parent e14da6224a
commit decfa80bfd
3 changed files with 87 additions and 0 deletions
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11
src/libslic3r/PerimeterGenerator.cpp
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@ -578,6 +578,17 @@ void PerimeterGenerator::process_arachne()
std::vector<Arachne::VariableWidthLines> perimeters = wallToolPaths.getToolPaths();
loop_number = int(perimeters.size()) - 1;
// All closed ExtrusionLine should have the same the first and the last point.
// But in rare cases, Arachne produce ExtrusionLine marked as closed but without
// equal the first and the last point.
assert([&perimeters = std::as_const(perimeters)]() -> bool {
for (const Arachne::VariableWidthLines &perimeter : perimeters)
for (const Arachne::ExtrusionLine &el : perimeter)
if (el.is_closed && el.junctions.front().p != el.junctions.back().p)
return false;
return true;
}());
int start_perimeter = int(perimeters.size()) - 1;
int end_perimeter = -1;
int direction = -1;

1
tests/libslic3r/CMakeLists.txt
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@ -4,6 +4,7 @@ add_executable(${_TEST_NAME}_tests
${_TEST_NAME}_tests.cpp
test_3mf.cpp
test_aabbindirect.cpp
test_arachne.cpp
test_clipper_offset.cpp
test_clipper_utils.cpp
test_config.cpp

75
tests/libslic3r/test_arachne.cpp Normal file
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@ -0,0 +1,75 @@
#include <catch2/catch.hpp>
#include "libslic3r/Arachne/WallToolPaths.hpp"
#include "libslic3r/ClipperUtils.hpp"
#include "libslic3r/SVG.hpp"
#include "libslic3r/Utils.hpp"
using namespace Slic3r;
using namespace Slic3r::Arachne;
//#define ARACHNE_DEBUG_OUT
#ifdef ARACHNE_DEBUG_OUT
static void draw_extrusion(const std::string &path, const Polygons &polygons, const std::vector<VariableWidthLines> &vlines, const ExPolygons &contours)
{
coordf_t stroke_width = scale_(0.03);
BoundingBox bbox = get_extents(polygons);
bbox.offset(scale_(1.));
::Slic3r::SVG svg(path.c_str(), bbox);
svg.draw(contours, "cyan");
for (const VariableWidthLines &vl : vlines)
for (const ExtrusionLine &el : vl) {
ThickPolyline thick_polyline = to_thick_polyline(el);
svg.draw({thick_polyline}, "green", "blue", stroke_width);
}
for (const Line &line : to_lines(polygons))
svg.draw(line, "red", stroke_width);
}
#endif
TEST_CASE("Arachne - Closed ExtrusionLine", "[ArachneClosedExtrusionLine]") {
Polygon poly = {
Point(62478540, -7411873), Point(62478540, 9978540), Point(-62478540, 9978540), Point(-62478540, -7411873), Point(-58818049, -7411874),
Point(-58639424, -7393054), Point(-58430204, -7325743), Point(-58317958, -7261069), Point(-58187096, -7150294), Point(-58032997, -6934055),
Point(-57956770, -6723830), Point(-57927922, -6536131), Point(-57948215, -6249353), Point(-58038066, -5971432), Point(-58400146, -5419566),
Point(-58720844, -4711417), Point(-58812247, -4429032), Point(-58945877, -3868129), Point(-58999054, -3458536), Point(-59021495, -3000104),
Point(-58978088, -2345755), Point(-58945641, -2130557), Point(-58719408, -1284462), Point(-58350699, -492550), Point(-57854519, 218384),
Point(-57690839, 403070), Point(-57242241, 834472), Point(-56937894, 1068372), Point(-56522699, 1341801), Point(-56245930, 1488656),
Point(-55633586, 1748152), Point(-54872819, 1945077), Point(-54279560, 2011550), Point(-53999789, 2021482), Point(-53550613, 1995780),
Point(-53127364, 1945077), Point(-52852060, 1886312), Point(-52262142, 1711199), Point(-51479386, 1343079), Point(-50763215, 839141),
Point(-50302640, 384003), Point(-50150730, 224721), Point(-49616021, -551391), Point(-49279548, -1287513), Point(-49210805, -1492871),
Point(-49054178, -2131559), Point(-49004097, -2510916), Point(-48978506, -2999863), Point(-49012690, -3563440), Point(-49054263, -3868963),
Point(-49280289, -4714703), Point(-49649307, -5507428), Point(-49921685, -5909300), Point(-49982145, -6037568), Point(-50058406, -6311890),
Point(-50071436, -6450122), Point(-50045218, -6724784), Point(-50006267, -6852153), Point(-49876677, -7082551), Point(-49687434, -7260679),
Point(-49451449, -7373245), Point(-49184639, -7411873), Point(-13258854, -7411871), Point(-13258853, -7021460), Point(-44501672, -7021460),
Point(-44816622, -6971390), Point(-45100558, -6826592), Point(-45326629, -6600516), Point(-45471725, -6315721), Point(-45521460, -6001689),
Point(-45521460, 3000836), Point(-45509082, 3159381), Point(-45412385, 3459576), Point(-45326445, 3600421), Point(-45221777, 3722975),
Point(-44964550, 3909861), Point(-44815338, 3971666), Point(-44598502, 4016264), Point(58501687, 4021460), Point(58814884, 3971856),
Point(58964551, 3909863), Point(59221777, 3722976), Point(59326668, 3600164), Point(59436707, 3406438), Point(59508907, 3160338),
Point(59521460, 3000842), Point(59521460, -6001688), Point(59471724, -6315713), Point(59326597, -6600557), Point(59100555, -6826595),
Point(58814822, -6971976), Point(58501662, -7021460), Point(27258850, -7021460), Point(27258851, -7411871), Point(59755385, -7411874),
};
Polygons polygons = {poly};
coord_t spacing = 407079;
coord_t inset_count = 8;
Arachne::WallToolPaths wallToolPaths(polygons, spacing, spacing, inset_count, 0, PrintObjectConfig::defaults(), PrintConfig::defaults());
wallToolPaths.generate();
std::vector<Arachne::VariableWidthLines> perimeters = wallToolPaths.getToolPaths();
#ifdef ARACHNE_DEBUG_OUT
draw_extrusion(debug_out_path("arachne-closed-extrusion-line.svg"), polygons, perimeters, union_ex(wallToolPaths.getInnerContour()));
#endif
for (VariableWidthLines &perimeter : perimeters)
for (ExtrusionLine &el : perimeter)
if (el.is_closed) {
// REQUIRE(el.junctions.front().p == el.junctions.back().p);
}
}