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extend qec tests

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This commit is contained in:
Filip Sykala 2021-11-03 09:56:06 +01:00
parent bbeff0f2e6
commit 9749dcb959
1 changed files with 89 additions and 0 deletions
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89
tests/libslic3r/test_quadric_edge_collapse.cpp
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@ -135,6 +135,95 @@ TEST_CASE("Reduce one edge by Quadric Edge Collapse", "[its]")
Private::is_better_similarity(its, its_, max_similarity);
}
static bool is_equal(const std::vector<stl_vertex> &v1,
const std::vector<stl_vertex> &v2,
float epsilon = std::numeric_limits<float>::epsilon())
{
// is same count?
if (v1.size() != v2.size()) return false;
// check all v1 vertices
for (const auto &v1_ : v1) {
auto is_equal = [&v1_, epsilon](const auto &v2_) {
for (size_t i = 0; i < 3; i++)
if (fabs(v1_[i] - v2_[i]) > epsilon)
return false;
return true;
};
// is v1 vertex in v2 vertices?
if(std::find_if(v2.begin(), v2.end(), is_equal) == v2.end()) return false;
}
return true;
}
TEST_CASE("Reduce to one triangle by Quadric Edge Collapse", "[its]")
{
// !!! Not work (no manifold - open edges{0-1, 1-2, 2-4, 4-5, 5-3, 3-0}):
//
// * 5
// |\
// | \
// 3 *--* 4
// | /|\
// |/ | \
// 0 *--*--* 2
// 1
//
// all triangles are on a plane therefore quadric is zero and
// when reduce edge between vertices 3 and 4 new vertex lay on vertex 3 not 4 !!!
indexed_triangle_set its;
its.vertices = {Vec3f(0.f, 0.f, 0.f), Vec3f(1.f, 0.f, 0.f),
Vec3f(2.f, 0.f, 0.f), Vec3f(0.f, 1.f, 0.f),
Vec3f(1.f, 1.f, 0.f), Vec3f(0.f, 2.f, 0.f)};
its.indices = {Vec3i(0, 1, 4), Vec3i(1, 2, 4), Vec3i(0, 4, 3),
Vec3i(3, 4, 5)};
std::vector<stl_vertex> triangle_vertices = {its.vertices[0],
its.vertices[2],
its.vertices[5]};
uint32_t wanted_count = 1;
its_quadric_edge_collapse(its, wanted_count);
// result should be one triangle made of vertices 0, 2, 5
// NOT WORK
//CHECK(its.indices.size() == wanted_count);
//// check all triangle vertices
//CHECK(is_equal(its.vertices, triangle_vertices));
}
TEST_CASE("Reduce to one triangle by Quadric Edge Collapse", "[its]")
{
// Extend previous test to tetrahedron to make it manifold
indexed_triangle_set its;
its.vertices = {
Vec3f(0.f, 0.f, 0.f), Vec3f(1.f, 0.f, 0.f), Vec3f(2.f, 0.f, 0.f),
Vec3f(0.f, 1.f, 0.f), Vec3f(1.f, 1.f, 0.f),
Vec3f(0.f, 2.f, 0.f)
// tetrahedron extetion
, Vec3f(0.f, 0.f, -2.f)
};
std::vector<stl_vertex> tetrahedron_vertices = {its.vertices[0],
its.vertices[2],
its.vertices[5],
// tetrahedron extetion
its.vertices[6]};
its.indices = {Vec3i(0, 1, 4), Vec3i(1, 2, 4), Vec3i(0, 4, 3), Vec3i(3, 4, 5),
// tetrahedron extetion
Vec3i(4, 2, 6), Vec3i(5, 4, 6), Vec3i(3, 5, 6), Vec3i(0, 3, 6), Vec3i(1, 0, 6), Vec3i(2, 1, 6)
};
uint32_t wanted_count = 4;
//its_write_obj(its, "tetrhedron_in.obj");
its_quadric_edge_collapse(its, wanted_count);
//its_write_obj(its, "tetrhedron_out.obj");
// result should be tetrahedron
CHECK(its.indices.size() == wanted_count);
// check all tetrahedron vertices
CHECK(is_equal(its.vertices, tetrahedron_vertices));
}
TEST_CASE("Simplify frog_legs.obj to 5% by Quadric edge collapse", "[its][quadric_edge_collapse]")
{
TriangleMesh mesh = load_model("frog_legs.obj");