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WIP: own AABBTreeIndirect, builds up the tree 4x quicker than libigl.

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Vojtech Bubnik 2020-05-20 16:30:30 +02:00
parent abf279fc44
commit eeb9590d28
3 changed files with 618 additions and 0 deletions
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1
tests/libslic3r/CMakeLists.txt
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@ -3,6 +3,7 @@ get_filename_component(_TEST_NAME ${CMAKE_CURRENT_LIST_DIR} NAME)
add_executable(${_TEST_NAME}_tests
${_TEST_NAME}_tests.cpp
test_3mf.cpp
test_aabbindirect.cpp
test_clipper_offset.cpp
test_clipper_utils.cpp
test_config.cpp

61
tests/libslic3r/test_aabbindirect.cpp Normal file
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@ -0,0 +1,61 @@
#include <catch2/catch.hpp>
#include <test_utils.hpp>
#include <libslic3r/TriangleMesh.hpp>
#include <libslic3r/AABBTreeIndirect.hpp>
using namespace Slic3r;
TEST_CASE("Building a tree over a box, ray caster and closest query", "[AABBIndirect]")
{
TriangleMesh tmesh = make_cube(1., 1., 1.);
tmesh.repair();
auto tree = AABBTreeIndirect::build_aabb_tree(tmesh.its.vertices, tmesh.its.indices);
REQUIRE(! tree.empty());
igl::Hit hit;
bool intersected = AABBTreeIndirect::intersect_ray_first_hit(
tmesh.its.vertices, tmesh.its.indices,
tree,
Vec3d(0.5, 0.5, -5.),
Vec3d(0., 0., 1.),
hit);
REQUIRE(intersected);
REQUIRE(hit.t == Approx(5.));
std::vector<igl::Hit> hits;
bool intersected2 = AABBTreeIndirect::intersect_ray_all_hits(
tmesh.its.vertices, tmesh.its.indices,
tree,
Vec3d(0.3, 0.5, -5.),
Vec3d(0., 0., 1.),
hits);
REQUIRE(intersected2);
REQUIRE(hits.size() == 2);
REQUIRE(hits.front().t == Approx(5.));
REQUIRE(hits.back().t == Approx(6.));
size_t hit_idx;
Vec3d closest_point;
double squared_distance = AABBTreeIndirect::squared_distance(
tmesh.its.vertices, tmesh.its.indices,
tree,
Vec3d(0.3, 0.5, -5.),
hit_idx, closest_point);
REQUIRE(squared_distance == Approx(5. * 5.));
REQUIRE(closest_point.x() == Approx(0.3));
REQUIRE(closest_point.y() == Approx(0.5));
REQUIRE(closest_point.z() == Approx(0.));
squared_distance = AABBTreeIndirect::squared_distance(
tmesh.its.vertices, tmesh.its.indices,
tree,
Vec3d(0.3, 0.5, 5.),
hit_idx, closest_point);
REQUIRE(squared_distance == Approx(4. * 4.));
REQUIRE(closest_point.x() == Approx(0.3));
REQUIRE(closest_point.y() == Approx(0.5));
REQUIRE(closest_point.z() == Approx(1.));
}