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Fix: prevent degeneration of model during simplification

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This commit is contained in:
Filip Sykala 2021-08-06 15:11:20 +02:00
parent fc4b18ebb1
commit ef5c94f90a
3 changed files with 83 additions and 2 deletions
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46
tests/data/simplification.obj Normal file
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v 39.349007 -54.069000 -199.819000
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v 39.767006 -53.899002 -199.805023
v 39.871002 -53.835007 -199.801025
v 39.443001 -53.829010 -199.878998
v 39.523003 -53.965012 -199.827026
v 39.807007 -53.863007 -199.796997
v 39.833008 -53.723007 -199.723022
v 39.759003 -53.822998 -199.822998
v 39.867004 -53.845001 -199.805023
v 39.937004 -53.805008 -199.805023
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12
tests/libslic3r/test_indexed_triangle_set.cpp
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@ -246,4 +246,14 @@ TEST_CASE("Simplify mesh by Quadric edge collapse to 5%", "[its]")
CHECK(fabs(original_volume - volume) < 33.);
float avg_distance = compare(mesh.its, its, 10);
CHECK(avg_distance < 0.022f); // 0.02022 | 0.0199614074
}
}
TEST_CASE("Simplify trouble case", "[its]")
{
TriangleMesh tm = load_model("simplification.obj");
REQUIRE_FALSE(tm.empty());
float max_error = std::numeric_limits<float>::max();
uint32_t wanted_count = 8;
its_quadric_edge_collapse(tm.its, wanted_count, &max_error);
CHECK(tm.its.indices.size() <= 8);
}