3D-printing/OrcaSlicer
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Eradicated admesh from TriangleMesh:

Browse source 
TriangleMesh newly only holds indexed_triangle_set and
TriangleMeshStats. TriangleMeshStats contains an excerpt of stl_stats.
TriangleMeshStats are updated when initializing with indexed_triangle_set.

Admesh triangle mesh fixing is newly only used when loading an STL.
AMF / 3MF / OBJ file formats are already indexed triangle sets, thus
they are no more converted to admesh stl_file format, nor fixed
through admesh repair machinery. When importing AMF / 3MF / OBJ files,
volume is calculated and if negative, all faces are flipped. Also
a bounding box and number of open edges is calculated.

Implemented its_number_of_patches(), its_num_open_edges()
Optimized its_split(), its_is_splittable() using a visitor pattern.

Reworked QHull integration into TriangleMesh:
    1) Face normals were not right.
    2) Indexed triangle set is newly emitted instead of duplicating
       vertices for each face.

Fixed cut_mesh(): Orient the triangulated faces correctly.
This commit is contained in:
Vojtech Bubnik 2021-09-20 17:12:22 +02:00
parent f484953a5a
commit 8a2a9dba2f
59 changed files with 1056 additions and 1758 deletions
Download patch file Download diff file Expand all files Collapse all files

29
src/slic3r/GUI/3DScene.cpp
View file

@ -313,7 +313,6 @@ void GLVolume::SinkingContours::update()
m_shift = Vec3d::Zero();
const TriangleMesh& mesh = model.objects[object_idx]->volumes[m_parent.volume_idx()]->mesh();
assert(mesh.has_shared_vertices());
m_model.reset();
GUI::GLModel::InitializationData init_data;
@ -519,7 +518,7 @@ const BoundingBoxf3& GLVolume::transformed_convex_hull_bounding_box() const
BoundingBoxf3 GLVolume::transformed_convex_hull_bounding_box(const Transform3d &trafo) const
{
return (m_convex_hull && m_convex_hull->facets_count() > 0) ?
return (m_convex_hull && ! m_convex_hull->empty()) ?
m_convex_hull->transformed_bounding_box(trafo) :
bounding_box().transformed(trafo);
}
@ -719,21 +718,20 @@ int GLVolumeCollection::load_wipe_tower_preview(
float min_width = 30.f;
// We'll now create the box with jagged edge. y-coordinates of the pre-generated model
// are shifted so that the front edge has y=0 and centerline of the back edge has y=depth:
Pointf3s points;
std::vector<Vec3i> facets;
float out_points_idx[][3] = { { 0, -depth, 0 }, { 0, 0, 0 }, { 38.453f, 0, 0 }, { 61.547f, 0, 0 }, { 100.0f, 0, 0 }, { 100.0f, -depth, 0 }, { 55.7735f, -10.0f, 0 }, { 44.2265f, 10.0f, 0 },
{ 38.453f, 0, 1 }, { 0, 0, 1 }, { 0, -depth, 1 }, { 100.0f, -depth, 1 }, { 100.0f, 0, 1 }, { 61.547f, 0, 1 }, { 55.7735f, -10.0f, 1 }, { 44.2265f, 10.0f, 1 } };
int out_facets_idx[][3] = { { 0, 1, 2 }, { 3, 4, 5 }, { 6, 5, 0 }, { 3, 5, 6 }, { 6, 2, 7 }, { 6, 0, 2 }, { 8, 9, 10 }, { 11, 12, 13 }, { 10, 11, 14 }, { 14, 11, 13 }, { 15, 8, 14 },
{8, 10, 14}, {3, 12, 4}, {3, 13, 12}, {6, 13, 3}, {6, 14, 13}, {7, 14, 6}, {7, 15, 14}, {2, 15, 7}, {2, 8, 15}, {1, 8, 2}, {1, 9, 8},
{0, 9, 1}, {0, 10, 9}, {5, 10, 0}, {5, 11, 10}, {4, 11, 5}, {4, 12, 11} };
static constexpr const int out_facets_idx[][3] = {
{ 0, 1, 2 }, { 3, 4, 5 }, { 6, 5, 0 }, { 3, 5, 6 }, { 6, 2, 7 }, { 6, 0, 2 }, { 8, 9, 10 }, { 11, 12, 13 }, { 10, 11, 14 }, { 14, 11, 13 }, { 15, 8, 14 },
{ 8, 10, 14 }, { 3, 12, 4 }, { 3, 13, 12 }, { 6, 13, 3 }, { 6, 14, 13 }, { 7, 14, 6 }, { 7, 15, 14 }, { 2, 15, 7 }, { 2, 8, 15 }, { 1, 8, 2 }, { 1, 9, 8 },
{ 0, 9, 1 }, { 0, 10, 9 }, { 5, 10, 0 }, { 5, 11, 10 }, { 4, 11, 5 }, { 4, 12, 11 } };
indexed_triangle_set its;
for (int i = 0; i < 16; ++i)
points.emplace_back(out_points_idx[i][0] / (100.f / min_width),
out_points_idx[i][1] + depth, out_points_idx[i][2]);
for (int i = 0; i < 28; ++i)
facets.emplace_back(out_facets_idx[i][0],
out_facets_idx[i][1],
out_facets_idx[i][2]);
TriangleMesh tooth_mesh(points, facets);
its.vertices.emplace_back(out_points_idx[i][0] / (100.f / min_width),
out_points_idx[i][1] + depth, out_points_idx[i][2]);
its.indices.reserve(28);
for (const int *face : out_facets_idx)
its.indices.emplace_back(face);
TriangleMesh tooth_mesh(std::move(its));
// We have the mesh ready. It has one tooth and width of min_width. We will now
// append several of these together until we are close to the required width
@ -744,7 +742,7 @@ int GLVolumeCollection::load_wipe_tower_preview(
tooth_mesh.translate(min_width, 0.f, 0.f);
}
mesh.scale(Vec3d(width / (n * min_width), 1.f, height)); // Scaling to proper width
mesh.scale(Vec3f(width / (n * min_width), 1.f, height)); // Scaling to proper width
}
else
mesh = make_cube(width, depth, height);
@ -753,7 +751,6 @@ int GLVolumeCollection::load_wipe_tower_preview(
TriangleMesh brim_mesh = make_cube(width + 2.f * brim_width, depth + 2.f * brim_width, 0.2f);
brim_mesh.translate(-brim_width, -brim_width, 0.f);
mesh.merge(brim_mesh);
mesh.repair();
volumes.emplace_back(new GLVolume(color));
GLVolume& v = *volumes.back();

1
src/slic3r/GUI/GLModel.cpp
View file

@ -160,7 +160,6 @@ bool GLModel::init_from_file(const std::string& filename)
}
TriangleMesh mesh = model.mesh();
mesh.require_shared_vertices();
init_from(mesh.its, mesh.bounding_box());
m_filename = filename;

24
src/slic3r/GUI/GUI_ObjectList.cpp
View file

@ -392,9 +392,9 @@ wxString ObjectList::get_mesh_errors_list(const int obj_idx, const int vol_idx /
// Create tooltip string, if there are errors
wxString tooltip = format_wxstr(_L_PLURAL("Auto-repaired %1$d error", "Auto-repaired %1$d errors", errors), errors) + ":\n";
const stl_stats& stats = vol_idx == -1 ?
(*m_objects)[obj_idx]->get_object_stl_stats() :
(*m_objects)[obj_idx]->volumes[vol_idx]->mesh().stats();
const TriangleMeshStats& stats = vol_idx == -1 ?
(*m_objects)[obj_idx]->get_object_stl_stats() :
(*m_objects)[obj_idx]->volumes[vol_idx]->mesh().stats();
if (stats.degenerate_facets > 0)
tooltip += "\t" + format_wxstr(_L_PLURAL("%1$d degenerate facet", "%1$d degenerate facets", stats.degenerate_facets), stats.degenerate_facets) + "\n";
@ -402,8 +402,6 @@ wxString ObjectList::get_mesh_errors_list(const int obj_idx, const int vol_idx /
tooltip += "\t" + format_wxstr(_L_PLURAL("%1$d edge fixed", "%1$d edges fixed", stats.edges_fixed), stats.edges_fixed) + "\n";
if (stats.facets_removed > 0)
tooltip += "\t" + format_wxstr(_L_PLURAL("%1$d facet removed", "%1$d facets removed", stats.facets_removed), stats.facets_removed) + "\n";
if (stats.facets_added > 0)
tooltip += "\t" + format_wxstr(_L_PLURAL("%1$d facet added", "%1$d facets added", stats.facets_added), stats.facets_added) + "\n";
if (stats.facets_reversed > 0)
tooltip += "\t" + format_wxstr(_L_PLURAL("%1$d facet reversed", "%1$d facets reversed", stats.facets_reversed), stats.facets_reversed) + "\n";
if (stats.backwards_edges > 0)
@ -1535,7 +1533,6 @@ void ObjectList::load_modifier(ModelObject& model_object, std::vector<ModelVolum
}
TriangleMesh mesh = model.mesh();
mesh.repair();
// Mesh will be centered when loading.
ModelVolume* new_volume = model_object.add_volume(std::move(mesh), type);
new_volume->name = boost::filesystem::path(input_file).filename().string();
@ -1558,27 +1555,24 @@ void ObjectList::load_modifier(ModelObject& model_object, std::vector<ModelVolum
static TriangleMesh create_mesh(const std::string& type_name, const BoundingBoxf3& bb)
{
TriangleMesh mesh;
const double side = wxGetApp().plater()->canvas3D()->get_size_proportional_to_max_bed_size(0.1);
indexed_triangle_set mesh;
if (type_name == "Box")
// Sitting on the print bed, left front front corner at (0, 0).
mesh = make_cube(side, side, side);
mesh = its_make_cube(side, side, side);
else if (type_name == "Cylinder")
// Centered around 0, sitting on the print bed.
// The cylinder has the same volume as the box above.
mesh = make_cylinder(0.564 * side, side);
mesh = its_make_cylinder(0.564 * side, side);
else if (type_name == "Sphere")
// Centered around 0, half the sphere below the print bed, half above.
// The sphere has the same volume as the box above.
mesh = make_sphere(0.62 * side, PI / 18);
mesh = its_make_sphere(0.62 * side, PI / 18);
else if (type_name == "Slab")
// Sitting on the print bed, left front front corner at (0, 0).
mesh = make_cube(bb.size().x() * 1.5, bb.size().y() * 1.5, bb.size().z() * 0.5);
mesh.repair();
return mesh;
mesh = its_make_cube(bb.size().x() * 1.5, bb.size().y() * 1.5, bb.size().z() * 0.5);
return TriangleMesh(mesh);
}
void ObjectList::load_generic_subobject(const std::string& type_name, const ModelVolumeType type)

4
src/slic3r/GUI/Gizmos/GLGizmoCut.cpp
View file

@ -282,10 +282,8 @@ void GLGizmoCut::update_contours()
if (m_cut_contours.cut_z != m_cut_z || m_cut_contours.object_id != model_object->id() || m_cut_contours.instance_idx != instance_idx) {
m_cut_contours.cut_z = m_cut_z;
if (m_cut_contours.object_id != model_object->id()) {
if (m_cut_contours.object_id != model_object->id())
m_cut_contours.mesh = model_object->raw_mesh();
m_cut_contours.mesh.repair();
}
m_cut_contours.position = box.center();
m_cut_contours.shift = Vec3d::Zero();

5
src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp
View file

@ -313,9 +313,8 @@ void GLGizmoSimplify::process()
}
void GLGizmoSimplify::set_its(indexed_triangle_set &its) {
auto tm = std::make_unique<TriangleMesh>(its);
tm->repair();
m_volume->set_mesh(std::move(tm));
m_volume->set_mesh(its);
m_volume->calculate_convex_hull();
m_volume->set_new_unique_id();
m_volume->get_object()->invalidate_bounding_box();
m_need_reload = true;

7
src/slic3r/GUI/Gizmos/GLGizmosCommon.cpp
View file

@ -270,11 +270,10 @@ void HollowedMesh::on_update()
m_drainholes = print_object->model_object()->sla_drain_holes;
m_old_hollowing_timestamp = timestamp;
const indexed_triangle_set &interior = print_object->hollowed_interior_mesh();
indexed_triangle_set interior = print_object->hollowed_interior_mesh();
if (!interior.empty()) {
m_hollowed_interior_transformed = std::make_unique<TriangleMesh>(interior);
m_hollowed_interior_transformed->repaired = false;
m_hollowed_interior_transformed->repair(true);
its_flip_triangles(interior);
m_hollowed_interior_transformed = std::make_unique<TriangleMesh>(std::move(interior));
m_hollowed_interior_transformed->transform(trafo_inv);
}
}

1
src/slic3r/GUI/MainFrame.cpp
View file

@ -1740,7 +1740,6 @@ void MainFrame::repair_stl()
Slic3r::TriangleMesh tmesh;
tmesh.ReadSTLFile(input_file.ToUTF8().data());
tmesh.repair();
tmesh.WriteOBJFile(output_file.ToUTF8().data());
Slic3r::GUI::show_info(this, L("Your file was repaired."), L("Repair"));
}

2
src/slic3r/GUI/MeshUtils.cpp
View file

@ -91,11 +91,9 @@ void MeshClipper::recalculate_triangles()
MeshSlicingParams slicing_params;
slicing_params.trafo.rotate(Eigen::Quaternion<double, Eigen::DontAlign>::FromTwoVectors(up, Vec3d::UnitZ()));
assert(m_mesh->has_shared_vertices());
ExPolygons expolys = union_ex(slice_mesh(m_mesh->its, height_mesh, slicing_params));
if (m_negative_mesh && !m_negative_mesh->empty()) {
assert(m_negative_mesh->has_shared_vertices());
ExPolygons neg_expolys = union_ex(slice_mesh(m_negative_mesh->its, height_mesh, slicing_params));
expolys = diff_ex(expolys, neg_expolys);
}

13
src/slic3r/GUI/Plater.cpp
View file

@ -1135,7 +1135,7 @@ void Sidebar::show_info_sizer()
static_cast<int>(model_object->facets_count()), stats.number_of_parts));
int errors = stats.degenerate_facets + stats.edges_fixed + stats.facets_removed +
stats.facets_added + stats.facets_reversed + stats.backwards_edges;
stats.facets_reversed + stats.backwards_edges;
if (errors > 0) {
wxString tooltip = format_wxstr(_L_PLURAL("Auto-repaired %1$d error", "Auto-repaired %1$d errors", errors), errors);
p->object_info->info_manifold->SetLabel(tooltip);
@ -1147,8 +1147,6 @@ void Sidebar::show_info_sizer()
tooltip += format_wxstr(_L_PLURAL("%1$d edge fixed", "%1$d edges fixed", stats.edges_fixed), stats.edges_fixed) + ", ";
if (stats.facets_removed > 0)
tooltip += format_wxstr(_L_PLURAL("%1$d facet removed", "%1$d facets removed", stats.facets_removed), stats.facets_removed) + ", ";
if (stats.facets_added > 0)
tooltip += format_wxstr(_L_PLURAL("%1$d facet added", "%1$d facets added", stats.facets_added), stats.facets_added) + ", ";
if (stats.facets_reversed > 0)
tooltip += format_wxstr(_L_PLURAL("%1$d facet reversed", "%1$d facets reversed", stats.facets_reversed), stats.facets_reversed) + ", ";
if (stats.backwards_edges > 0)
@ -2544,16 +2542,14 @@ std::vector<size_t> Plater::priv::load_model_objects(const ModelObjectPtrs& mode
if (max_ratio > 10000) {
// the size of the object is too big -> this could lead to overflow when moving to clipper coordinates,
// so scale down the mesh
double inv = 1. / max_ratio;
object->scale_mesh_after_creation(inv * Vec3d::Ones());
object->scale_mesh_after_creation(1. / max_ratio);
object->origin_translation = Vec3d::Zero();
object->center_around_origin();
scaled_down = true;
break;
}
else if (max_ratio > 5) {
const Vec3d inverse = 1.0 / max_ratio * Vec3d::Ones();
instance->set_scaling_factor(inverse.cwiseProduct(instance->get_scaling_factor()));
instance->set_scaling_factor(instance->get_scaling_factor() / max_ratio);
scaled_down = true;
}
}
@ -5587,11 +5583,9 @@ void Plater::export_stl(bool extended, bool selection_only)
for (const ModelVolume *v : mo->volumes)
if (v->is_model_part()) {
TriangleMesh vol_mesh(v->mesh());
vol_mesh.repair();
vol_mesh.transform(v->get_matrix(), true);
mesh.merge(vol_mesh);
}
mesh.repair();
if (instances) {
TriangleMesh vols_mesh(mesh);
mesh = TriangleMesh();
@ -5601,7 +5595,6 @@ void Plater::export_stl(bool extended, bool selection_only)
mesh.merge(m);
}
}
mesh.repair();
return mesh;
};