Eradicated admesh from TriangleMesh:

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

View file

@ -4,10 +4,7 @@ use strict;
use warnings;
use Slic3r::XS;
use Test::More tests => 49;
is Slic3r::TriangleMesh::hello_world(), 'Hello world!',
'hello world';
use Test::More tests => 5;
my $cube = {
vertices => [ [20,20,0], [20,0,0], [0,0,0], [0,20,0], [20,20,20], [0,20,20], [0,0,20], [20,0,20] ],
@ -17,12 +14,10 @@ my $cube = {
{
my $m = Slic3r::TriangleMesh->new;
$m->ReadFromPerl($cube->{vertices}, $cube->{facets});
$m->repair;
my ($vertices, $facets) = ($m->vertices, $m->facets);
is_deeply $vertices, $cube->{vertices}, 'vertices arrayref roundtrip';
is_deeply $facets, $cube->{facets}, 'facets arrayref roundtrip';
is scalar(@{$m->normals}), scalar(@$facets), 'normals returns the right number of items';
{
my $m2 = $m->clone;
@ -34,109 +29,6 @@ my $cube = {
{
my $stats = $m->stats;
is $stats->{number_of_facets}, scalar(@{ $cube->{facets} }), 'stats.number_of_facets';
ok abs($stats->{volume} - 20*20*20) < 1E-2, 'stats.volume';
}
$m->scale(2);
ok abs($m->stats->{volume} - 40*40*40) < 1E-2, 'scale';
$m->scale_xyz(Slic3r::Pointf3->new(2,1,1));
ok abs($m->stats->{volume} - 2*40*40*40) < 1E-2, 'scale_xyz';
$m->translate(5,10,0);
is_deeply $m->vertices->[0], [85,50,0], 'translate';
$m->align_to_origin;
is_deeply $m->vertices->[2], [0,0,0], 'align_to_origin';
is_deeply $m->size, [80,40,40], 'size';
$m->scale_xyz(Slic3r::Pointf3->new(0.5,1,1));
$m->rotate(45, Slic3r::Point->new(20,20));
ok abs($m->size->[0] - sqrt(2)*40) < 1E-4, 'rotate';
{
my $meshes = $m->split;
is scalar(@$meshes), 1, 'split';
isa_ok $meshes->[0], 'Slic3r::TriangleMesh', 'split';
is_deeply $m->bb3, $meshes->[0]->bb3, 'split populates stats';
}
my $m2 = Slic3r::TriangleMesh->new;
$m2->ReadFromPerl($cube->{vertices}, $cube->{facets});
$m2->repair;
$m->merge($m2);
$m->repair;
is $m->stats->{number_of_facets}, 2 * $m2->stats->{number_of_facets}, 'merge';
{
my $meshes = $m->split;
is scalar(@$meshes), 2, 'split';
}
}
{
my $m = Slic3r::TriangleMesh->new;
$m->ReadFromPerl($cube->{vertices}, $cube->{facets});
$m->repair;
# The slice at zero height does not belong to the mesh, the slicing considers the vertical structures to be
# open intervals at the bottom end, closed at the top end.
my @z = (0.0001,2,4,8,6,8,10,12,14,16,18,20);
my $result = $m->slice(\@z);
my $SCALING_FACTOR = 0.000001;
for my $i (0..$#z) {
is scalar(@{$result->[$i]}), 1, "number of returned polygons per layer (z = " . $z[$i] . ")";
is $result->[$i][0]->area, 20*20/($SCALING_FACTOR**2), 'size of returned polygon';
}
}
{
my $m = Slic3r::TriangleMesh->new;
$m->ReadFromPerl(
[ [0,0,0],[0,0,20],[0,5,0],[0,5,20],[50,0,0],[50,0,20],[15,5,0],[35,5,0],[15,20,0],[50,5,0],[35,20,0],[15,5,10],[50,5,20],[35,5,10],[35,20,10],[15,20,10] ],
[ [0,1,2],[2,1,3],[1,0,4],[5,1,4],[0,2,4],[4,2,6],[7,6,8],[4,6,7],[9,4,7],[7,8,10],[2,3,6],[11,3,12],[7,12,9],[13,12,7],[6,3,11],[11,12,13],[3,1,5],[12,3,5],[5,4,9],[12,5,9],[13,7,10],[14,13,10],[8,15,10],[10,15,14],[6,11,8],[8,11,15],[15,11,13],[14,15,13] ],
);
$m->repair;
{
# at Z = 10 we have a top horizontal surface
my $slices = $m->slice([ 5, 10 ]);
is $slices->[0][0]->area, $slices->[1][0]->area, 'slicing a top tangent plane includes its area';
}
$m->mirror_z;
{
# this second test also checks that performing a second slice on a mesh after
# a transformation works properly (shared_vertices is correctly invalidated);
# at Z = -10 we have a bottom horizontal surface
# (The slice at zero height does not belong to the mesh, the slicing considers the vertical structures to be
# open intervals at the bottom end, closed at the top end, so the Z = -10 is shifted a bit up to get a valid slice).
my $slices = $m->slice([ -5, -10+0.00001 ]);
is $slices->[0][0]->area, $slices->[1][0]->area, 'slicing a bottom tangent plane includes its area';
}
}
{
my $m = Slic3r::TriangleMesh->new;
$m->ReadFromPerl($cube->{vertices}, $cube->{facets});
$m->repair;
{
my $upper = Slic3r::TriangleMesh->new;
my $lower = Slic3r::TriangleMesh->new;
$m->cut(0, $upper, $lower);
$upper->repair; $lower->repair;
is $upper->facets_count, 12, 'upper mesh has all facets except those belonging to the slicing plane';
is $lower->facets_count, 0, 'lower mesh has no facets';
}
{
my $upper = Slic3r::TriangleMesh->new;
my $lower = Slic3r::TriangleMesh->new;
$m->cut(10, $upper, $lower);
#$upper->repair; $lower->repair;
# we expect:
# 2 facets on external horizontal surfaces
# 3 facets on each side = 12 facets
# 6 facets on the triangulated side (8 vertices)
is $upper->facets_count, 2+12+6, 'upper mesh has the expected number of facets';
is $lower->facets_count, 2+12+6, 'lower mesh has the expected number of facets';
}
}

View file

@ -88,8 +88,6 @@
bool looks_like_multipart_object() const;
void convert_multipart_object(unsigned int max_extruders);
void print_info() const;
bool store_stl(char *path, bool binary)
%code%{ TriangleMesh mesh = THIS->mesh(); RETVAL = Slic3r::store_stl(path, &mesh, binary); %};
@ -212,7 +210,6 @@ ModelMaterial::attributes()
%code%{ THIS->origin_translation = *point; %};
void ensure_on_bed();
bool needed_repair() const;
int materials_count() const;
int facets_count();
void center_around_origin();
@ -223,13 +220,6 @@ ModelMaterial::attributes()
%code{% THIS->rotate(angle, *axis); %};
void mirror(Axis axis);
ModelObjectPtrs* split_object()
%code%{
RETVAL = new ModelObjectPtrs(); // leak?
THIS->split(RETVAL);
%};
void print_info() const;
};

View file

@ -11,14 +11,11 @@
~TriangleMesh();
Clone<TriangleMesh> clone()
%code{% RETVAL = THIS; %};
void ReadSTLFile(char* input_file);
void write_ascii(char* output_file);
void write_binary(char* output_file);
void repair();
void WriteOBJFile(char* output_file);
void scale(float factor);
void scale_xyz(Vec3d* versor)
%code{% THIS->scale(*versor); %};
%code{% THIS->scale(versor->cast<float>()); %};
void translate(float x, float y, float z);
void rotate_x(float angle);
void rotate_y(float angle);
@ -28,16 +25,13 @@
void mirror_z();
void align_to_origin();
void rotate(double angle, Point* center);
TriangleMeshPtrs split();
void merge(TriangleMesh* mesh)
%code{% THIS->merge(*mesh); %};
ExPolygons horizontal_projection();
Clone<Polygon> convex_hull();
Clone<BoundingBoxf3> bounding_box();
Clone<Vec3d> center()
%code{% RETVAL = THIS->bounding_box().center(); %};
int facets_count();
void reset_repair_stats();
%{
@ -46,51 +40,40 @@ TriangleMesh::ReadFromPerl(vertices, facets)
SV* vertices
SV* facets
CODE:
stl_file &stl = THIS->stl;
stl.stats.type = inmemory;
// count facets and allocate memory
AV* facets_av = (AV*)SvRV(facets);
stl.stats.number_of_facets = av_len(facets_av)+1;
stl.stats.original_num_facets = stl.stats.number_of_facets;
stl_allocate(&stl);
// read geometry
AV* vertices_av = (AV*)SvRV(vertices);
for (int i = 0; i < stl.stats.number_of_facets; i++) {
AV* facet_av = (AV*)SvRV(*av_fetch(facets_av, i, 0));
stl_facet facet;
facet.normal(0) = 0;
facet.normal(1) = 0;
facet.normal(2) = 0;
for (unsigned int v = 0; v <= 2; v++) {
AV* vertex_av = (AV*)SvRV(*av_fetch(vertices_av, SvIV(*av_fetch(facet_av, v, 0)), 0));
facet.vertex[v](0) = SvNV(*av_fetch(vertex_av, 0, 0));
facet.vertex[v](1) = SvNV(*av_fetch(vertex_av, 1, 0));
facet.vertex[v](2) = SvNV(*av_fetch(vertex_av, 2, 0));
std::vector<Slic3r::Vec3f> out_vertices;
{
AV* vertices_av = (AV*)SvRV(vertices);
int number_of_vertices = av_len(vertices_av) + 1;
out_vertices.reserve(number_of_vertices);
for (int i = 0; i < number_of_vertices; ++ i) {
AV* vertex_av = (AV*)SvRV(*av_fetch(vertices_av, i, 0));
out_vertices.push_back(Slic3r::Vec3f(SvNV(*av_fetch(vertex_av, 0, 0)), SvNV(*av_fetch(vertex_av, 1, 0)), SvNV(*av_fetch(vertex_av, 2, 0))));
}
facet.extra[0] = 0;
facet.extra[1] = 0;
stl.facet_start[i] = facet;
}
stl_get_size(&stl);
std::vector<Slic3r::Vec3i> out_indices;
{
AV* facets_av = (AV*)SvRV(facets);
int number_of_facets = av_len(facets_av) + 1;
out_indices.reserve(number_of_facets);
for (int i = 0; i < number_of_facets; ++ i) {
AV* facet_av = (AV*)SvRV(*av_fetch(facets_av, i, 0));
out_indices.push_back(Slic3r::Vec3i(SvIV(*av_fetch(facet_av, 0, 0)), SvIV(*av_fetch(facet_av, 1, 0)), SvIV(*av_fetch(facet_av, 2, 0))));
}
}
*THIS = TriangleMesh(std::move(out_vertices), std::move(out_indices));
SV*
TriangleMesh::stats()
CODE:
HV* hv = newHV();
(void)hv_stores( hv, "number_of_facets", newSViv(THIS->stl.stats.number_of_facets) );
(void)hv_stores( hv, "number_of_parts", newSViv(THIS->stl.stats.number_of_parts) );
(void)hv_stores( hv, "volume", newSVnv(THIS->stl.stats.volume) );
(void)hv_stores( hv, "degenerate_facets", newSViv(THIS->stl.stats.degenerate_facets) );
(void)hv_stores( hv, "edges_fixed", newSViv(THIS->stl.stats.edges_fixed) );
(void)hv_stores( hv, "facets_removed", newSViv(THIS->stl.stats.facets_removed) );
(void)hv_stores( hv, "facets_added", newSViv(THIS->stl.stats.facets_added) );
(void)hv_stores( hv, "facets_reversed", newSViv(THIS->stl.stats.facets_reversed) );
(void)hv_stores( hv, "backwards_edges", newSViv(THIS->stl.stats.backwards_edges) );
(void)hv_stores( hv, "normals_fixed", newSViv(THIS->stl.stats.normals_fixed) );
(void)hv_stores( hv, "number_of_facets", newSViv(THIS->facets_count()) );
(void)hv_stores( hv, "number_of_parts", newSViv(THIS->stats().number_of_parts) );
(void)hv_stores( hv, "volume", newSVnv(THIS->stats().volume) );
(void)hv_stores( hv, "degenerate_facets", newSViv(THIS->stats().degenerate_facets) );
(void)hv_stores( hv, "edges_fixed", newSViv(THIS->stats().edges_fixed) );
(void)hv_stores( hv, "facets_removed", newSViv(THIS->stats().facets_removed) );
(void)hv_stores( hv, "facets_reversed", newSViv(THIS->stats().facets_reversed) );
(void)hv_stores( hv, "backwards_edges", newSViv(THIS->stats().backwards_edges) );
RETVAL = (SV*)newRV_noinc((SV*)hv);
OUTPUT:
RETVAL
@ -98,9 +81,6 @@ TriangleMesh::stats()
SV*
TriangleMesh::vertices()
CODE:
if (!THIS->repaired) CONFESS("vertices() requires repair()");
THIS->require_shared_vertices();
// vertices
AV* vertices = newAV();
av_extend(vertices, THIS->its.vertices.size());
@ -120,13 +100,10 @@ TriangleMesh::vertices()
SV*
TriangleMesh::facets()
CODE:
if (!THIS->repaired) CONFESS("facets() requires repair()");
THIS->require_shared_vertices();
// facets
AV* facets = newAV();
av_extend(facets, THIS->stl.stats.number_of_facets);
for (int i = 0; i < THIS->stl.stats.number_of_facets; i++) {
av_extend(facets, THIS->facets_count());
for (int i = 0; i < THIS->facets_count(); i++) {
AV* facet = newAV();
av_store(facets, i, newRV_noinc((SV*)facet));
av_extend(facet, 2);
@ -139,35 +116,14 @@ TriangleMesh::facets()
OUTPUT:
RETVAL
SV*
TriangleMesh::normals()
CODE:
if (!THIS->repaired) CONFESS("normals() requires repair()");
// normals
AV* normals = newAV();
av_extend(normals, THIS->stl.stats.number_of_facets);
for (int i = 0; i < THIS->stl.stats.number_of_facets; i++) {
AV* facet = newAV();
av_store(normals, i, newRV_noinc((SV*)facet));
av_extend(facet, 2);
av_store(facet, 0, newSVnv(THIS->stl.facet_start[i].normal(0)));
av_store(facet, 1, newSVnv(THIS->stl.facet_start[i].normal(1)));
av_store(facet, 2, newSVnv(THIS->stl.facet_start[i].normal(2)));
}
RETVAL = newRV_noinc((SV*)normals);
OUTPUT:
RETVAL
SV*
TriangleMesh::size()
CODE:
AV* size = newAV();
av_extend(size, 2);
av_store(size, 0, newSVnv(THIS->stl.stats.size(0)));
av_store(size, 1, newSVnv(THIS->stl.stats.size(1)));
av_store(size, 2, newSVnv(THIS->stl.stats.size(2)));
av_store(size, 0, newSVnv(THIS->stats().size(0)));
av_store(size, 1, newSVnv(THIS->stats().size(1)));
av_store(size, 2, newSVnv(THIS->stats().size(2)));
RETVAL = newRV_noinc((SV*)size);
OUTPUT:
RETVAL
@ -176,8 +132,6 @@ SV*
TriangleMesh::slice(z)
std::vector<double> z
CODE:
THIS->require_shared_vertices(); // TriangleMeshSlicer needs this
// convert doubles to floats
std::vector<float> z_f = cast<float>(z);
@ -206,7 +160,6 @@ TriangleMesh::cut(z, upper_mesh, lower_mesh)
TriangleMesh* upper_mesh;
TriangleMesh* lower_mesh;
CODE:
THIS->require_shared_vertices(); // TriangleMeshSlicer needs this
indexed_triangle_set upper, lower;
cut_mesh(THIS->its, z, upper_mesh ? &upper : nullptr, lower_mesh ? &lower : nullptr);
if (upper_mesh)
@ -217,12 +170,12 @@ TriangleMesh::cut(z, upper_mesh, lower_mesh)
std::vector<double>
TriangleMesh::bb3()
CODE:
RETVAL.push_back(THIS->stl.stats.min(0));
RETVAL.push_back(THIS->stl.stats.min(1));
RETVAL.push_back(THIS->stl.stats.max(0));
RETVAL.push_back(THIS->stl.stats.max(1));
RETVAL.push_back(THIS->stl.stats.min(2));
RETVAL.push_back(THIS->stl.stats.max(2));
RETVAL.push_back(THIS->stats().min(0));
RETVAL.push_back(THIS->stats().min(1));
RETVAL.push_back(THIS->stats().max(0));
RETVAL.push_back(THIS->stats().max(1));
RETVAL.push_back(THIS->stats().min(2));
RETVAL.push_back(THIS->stats().max(2));
OUTPUT:
RETVAL
@ -250,16 +203,3 @@ sphere(double rho)
%}
};
%package{Slic3r::TriangleMesh};
%{
PROTOTYPES: DISABLE
std::string
hello_world()
CODE:
RETVAL = "Hello world!";
OUTPUT:
RETVAL
%}

View file

@ -239,7 +239,6 @@ SupportLayerPtrs* T_PTR_ARRAYREF_PTR
# we return these types whenever we want the items to be returned
# by reference and not marked ::Ref because they're newly allocated
# and not referenced by any Perl object
TriangleMeshPtrs T_PTR_ARRAYREF
INPUT

View file

@ -163,7 +163,6 @@
%typemap{Surfaces};
%typemap{Polygons*};
%typemap{TriangleMesh*};
%typemap{TriangleMeshPtrs};
%typemap{Model*};
%typemap{Ref<Model>}{simple};
%typemap{Clone<Model>}{simple};