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Distill a test case for failing assert(p != prev) inside GCodeGenerator::_extrude().

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This commit is contained in:
Lukáš Hejl 2024-11-04 14:51:21 +01:00
parent a443b27895
commit dfdc407fd6
1 changed files with 72 additions and 0 deletions
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72
tests/libslic3r/test_arc_welder.cpp
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@ -3,6 +3,8 @@
#include <random>
#include <libslic3r/ExtrusionEntity.hpp>
#include <libslic3r/GCode/SmoothPath.hpp>
#include <libslic3r/Geometry/ArcWelder.hpp>
#include <libslic3r/Geometry/Circle.hpp>
#include <libslic3r/SVG.hpp>
@ -398,6 +400,76 @@ TEST_CASE("arc wedge test", "[ArcWelder]") {
}
}
// Distilled a test case for failing assert(p != prev) inside GCodeGenerator::_extrude() that is caused
// by performing simplification of each ExtrusionPath in ExtrusionMultiPath one by one and not
// simplifying ExtrusionMultiPath as a whole.
TEST_CASE("ExtrusionMultiPath simplification", "[ArcWelderMultiPathSimplify][!mayfail]")
{
using namespace Slic3r::Geometry;
using namespace Slic3r::GCode;
ExtrusionMultiPath multi_path;
multi_path.paths.emplace_back(Polyline({Point(3615254, 8843476), Point(5301926, 8703627), Point(5503271, 8717959),
Point(5787717, 8834837), Point(7465587, 10084995), Point(7565376, 10117372)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0626713, 0.449999f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(7565376, 10117372), Point(7751661, 10097239)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0604367, 0.435101f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(7751661, 10097239), Point(11289346, 8638614), Point(11412324, 8600432)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0547566, 0.397234f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(11412324, 8600432), Point(11727623, 8578798)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.059829, 0.43105f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(11727623, 8578798), Point(12042923, 8557165)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0654324, 0.468406f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(12042923, 8557165), Point(12358223, 8535532), Point(12339460, 8545477)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0710358, 0.505762f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(12339460, 8545477), Point(12035789, 8689023)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0701369, 0.499769f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(12035789, 8689023), Point(11732119, 8832569)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0650101, 0.465591f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(11732119, 8832569), Point(11428449, 8976115)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0598834, 0.431413f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(11428449, 8976115), Point(7890375, 10433797)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0547566, 0.397234f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(7890375, 10433797), Point(7890196, 10433871)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0546036, 0.396214f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(7890196, 10433871), Point(7645162, 10520244)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0586375, 0.423107f, 0.15f), false));
multi_path.paths.emplace_back(Polyline({Point(7645162, 10520244), Point(7400129, 10606618), Point(6491466, 10980845),
Point(3782930, 8968079)}),
ExtrusionAttributes(ExtrusionRole::SolidInfill, ExtrusionFlow(0.0626713, 0.449999f, 0.15f), false));
const double resolution = 8000.;
SmoothPathCache smooth_path_cache;
SmoothPath smooth_path = smooth_path_cache.resolve_or_fit(multi_path, false, resolution);
double min_segment_length = std::numeric_limits<double>::max();
for (const SmoothPathElement &el : smooth_path) {
assert(el.path.size() > 1);
Point prev_pt = el.path.front().point;
for (auto segment_it = std::next(el.path.begin()); segment_it != el.path.end(); ++segment_it) {
if (const double length = (segment_it->point - prev_pt).cast<double>().norm(); length < min_segment_length) {
min_segment_length = length;
}
}
}
REQUIRE(min_segment_length >= resolution);
}
#if 0
// For quantization
//#include <libslic3r/GCode/GCodeWriter.hpp>