453 lines
13 KiB
Perl
453 lines
13 KiB
Perl
package Slic3r::Model;
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use Moo;
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use List::Util qw(first max);
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use Slic3r::Geometry qw(X Y Z MIN move_points);
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has 'materials' => (is => 'ro', default => sub { {} });
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has 'objects' => (is => 'ro', default => sub { [] });
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has '_bounding_box' => (is => 'rw');
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sub read_from_file {
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my $class = shift;
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my ($input_file) = @_;
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my $model = $input_file =~ /\.stl$/i ? Slic3r::Format::STL->read_file($input_file)
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: $input_file =~ /\.obj$/i ? Slic3r::Format::OBJ->read_file($input_file)
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: $input_file =~ /\.amf(\.xml)?$/i ? Slic3r::Format::AMF->read_file($input_file)
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: die "Input file must have .stl, .obj or .amf(.xml) extension\n";
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$_->input_file($input_file) for @{$model->objects};
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return $model;
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}
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sub merge {
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my $class = shift;
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my @models = @_;
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my $new_model = $class->new;
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foreach my $model (@models) {
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# merge material attributes (should we rename them in case of duplicates?)
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$new_model->set_material($_, { %{$model->materials->{$_}}, %{$model->materials->{$_} || {}} })
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for keys %{$model->materials};
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foreach my $object (@{$model->objects}) {
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my $new_object = $new_model->add_object(
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input_file => $object->input_file,
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vertices => $object->vertices,
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layer_height_ranges => $object->layer_height_ranges,
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);
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$new_object->add_volume(
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material_id => $_->material_id,
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facets => $_->facets,
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) for @{$object->volumes};
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$new_object->add_instance(
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offset => $_->offset,
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rotation => $_->rotation,
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) for @{ $object->instances // [] };
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}
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}
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return $new_model;
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}
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sub add_object {
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my $self = shift;
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my $object = Slic3r::Model::Object->new(model => $self, @_);
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push @{$self->objects}, $object;
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$self->_bounding_box(undef);
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return $object;
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}
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sub set_material {
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my $self = shift;
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my ($material_id, $attributes) = @_;
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return $self->materials->{$material_id} = Slic3r::Model::Region->new(
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model => $self,
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attributes => $attributes || {},
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);
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}
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sub arrange_objects {
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my $self = shift;
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my ($config) = @_;
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# do we have objects with no position?
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if (first { !defined $_->instances } @{$self->objects}) {
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# we shall redefine positions for all objects
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my ($copies, @positions) = $self->_arrange(
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config => $config,
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items => $self->objects,
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);
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# apply positions to objects
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foreach my $object (@{$self->objects}) {
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$object->align_to_origin;
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$object->instances([]);
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$object->add_instance(
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offset => $_,
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rotation => 0,
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) for splice @positions, 0, $copies;
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}
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} else {
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# we only have objects with defined position
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# align the whole model to origin as it is
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$self->align_to_origin;
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# arrange this model as a whole
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my ($copies, @positions) = $self->_arrange(
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config => $config,
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items => [$self],
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);
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# apply positions to objects by translating the current positions
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foreach my $object (@{$self->objects}) {
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my @old_instances = @{$object->instances};
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$object->instances([]);
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foreach my $instance (@old_instances) {
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$object->add_instance(
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offset => $_,
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rotation => $instance->rotation,
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scaling_factor => $instance->scaling_factor,
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) for move_points($instance->offset, @positions);
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}
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}
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}
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}
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sub _arrange {
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my $self = shift;
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my %params = @_;
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my $config = $params{config};
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my @items = @{$params{items}}; # can be Model or Object objects, they have to implement size()
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if ($config->duplicate_grid->[X] > 1 || $config->duplicate_grid->[Y] > 1) {
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if (@items > 1) {
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die "Grid duplication is not supported with multiple objects\n";
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}
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my @positions = ();
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my $size = $items[0]->size;
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my $dist = $config->duplicate_distance;
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for my $x_copy (1..$config->duplicate_grid->[X]) {
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for my $y_copy (1..$config->duplicate_grid->[Y]) {
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push @positions, [
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($size->[X] + $dist) * ($x_copy-1),
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($size->[Y] + $dist) * ($y_copy-1),
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];
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}
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}
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return ($config->duplicate_grid->[X] * $config->duplicate_grid->[Y]), @positions;
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} else {
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my $total_parts = $config->duplicate * @items;
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my @sizes = map $_->size, @items;
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my $partx = max(map $_->[X], @sizes);
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my $party = max(map $_->[Y], @sizes);
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return $config->duplicate,
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Slic3r::Geometry::arrange
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($total_parts, $partx, $party, (map $_, @{$config->bed_size}),
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$config->min_object_distance, $config);
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}
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}
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sub vertices {
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my $self = shift;
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return [ map @{$_->vertices}, @{$self->objects} ];
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}
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sub used_vertices {
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my $self = shift;
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return [ map @{$_->used_vertices}, @{$self->objects} ];
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}
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sub size {
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my $self = shift;
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return $self->bounding_box->size;
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}
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sub bounding_box {
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my $self = shift;
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if (!defined $self->_bounding_box) {
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$self->_bounding_box(Slic3r::Geometry::BoundingBox->new_from_points_3D($self->used_vertices));
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}
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return $self->_bounding_box;
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}
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sub align_to_origin {
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my $self = shift;
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# calculate the displacements needed to
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# have lowest value for each axis at coordinate 0
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{
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my $bb = $self->bounding_box;
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$self->move(map -$bb->extents->[$_][MIN], X,Y,Z);
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}
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# align all instances to 0,0 as well
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{
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my @instances = map @{$_->instances}, @{$self->objects};
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my @extents = Slic3r::Geometry::bounding_box_3D([ map $_->offset, @instances ]);
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$_->offset->translate(-$extents[X][MIN], -$extents[Y][MIN]) for @instances;
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}
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}
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sub scale {
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my $self = shift;
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$_->scale(@_) for @{$self->objects};
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$self->_bounding_box->scale(@_) if defined $self->_bounding_box;
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}
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sub move {
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my $self = shift;
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my @shift = @_;
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$_->move(@shift) for @{$self->objects};
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$self->_bounding_box->translate(@shift) if defined $self->_bounding_box;
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}
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# flattens everything to a single mesh
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sub mesh {
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my $self = shift;
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my @meshes = ();
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foreach my $object (@{$self->objects}) {
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my @instances = $object->instances ? @{$object->instances} : (undef);
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foreach my $instance (@instances) {
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my $mesh = $object->mesh->clone;
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if ($instance) {
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$mesh->rotate($instance->rotation);
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$mesh->scale($instance->scaling_factor);
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$mesh->align_to_origin;
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$mesh->move(@{$instance->offset});
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}
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push @meshes, $mesh;
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}
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}
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return Slic3r::TriangleMesh->merge(@meshes);
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}
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# this method splits objects into multiple distinct objects by walking their meshes
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sub split_meshes {
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my $self = shift;
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my @objects = @{$self->objects};
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@{$self->objects} = ();
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foreach my $object (@objects) {
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if (@{$object->volumes} > 1) {
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# We can't split meshes if there's more than one material, because
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# we can't group the resulting meshes by object afterwards
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push @{$self->objects}, $object;
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next;
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}
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my $volume = $object->volumes->[0];
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foreach my $mesh ($volume->mesh->split_mesh) {
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my $new_object = $self->add_object(
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input_file => $object->input_file,
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layer_height_ranges => $object->layer_height_ranges,
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);
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$new_object->add_volume(
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vertices => $mesh->vertices,
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facets => $mesh->facets,
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material_id => $volume->material_id,
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);
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# let's now align the new object to the origin and put its displacement
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# (extents) in the instances info
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my $bb = $mesh->bounding_box;
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$new_object->align_to_origin;
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# add one instance per original instance applying the displacement
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$new_object->add_instance(
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offset => [ $_->offset->[X] + $bb->x_min, $_->offset->[Y] + $bb->y_min ],
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rotation => $_->rotation,
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scaling_factor => $_->scaling_factor,
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) for @{ $object->instances // [] };
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}
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}
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}
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package Slic3r::Model::Region;
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use Moo;
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has 'model' => (is => 'ro', weak_ref => 1, required => 1);
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has 'attributes' => (is => 'rw', default => sub { {} });
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package Slic3r::Model::Object;
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use Moo;
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use List::Util qw(first);
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use Slic3r::Geometry qw(X Y Z MIN MAX move_points move_points_3D);
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use Storable qw(dclone);
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has 'input_file' => (is => 'rw');
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has 'model' => (is => 'ro', weak_ref => 1, required => 1);
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has 'vertices' => (is => 'ro', default => sub { [] });
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has 'volumes' => (is => 'ro', default => sub { [] });
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has 'instances' => (is => 'rw');
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has 'layer_height_ranges' => (is => 'rw', default => sub { [] }); # [ z_min, z_max, layer_height ]
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has '_bounding_box' => (is => 'rw');
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sub add_volume {
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my $self = shift;
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my %args = @_;
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if (my $vertices = delete $args{vertices}) {
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my $v_offset = @{$self->vertices};
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push @{$self->vertices}, @$vertices;
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@{$args{facets}} = map {
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my $f = [@$_];
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$f->[$_] += $v_offset for -3..-1;
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$f;
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} @{$args{facets}};
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}
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my $volume = Slic3r::Model::Volume->new(object => $self, %args);
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push @{$self->volumes}, $volume;
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$self->_bounding_box(undef);
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$self->model->_bounding_box(undef);
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return $volume;
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}
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sub add_instance {
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my $self = shift;
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$self->instances([]) if !defined $self->instances;
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push @{$self->instances}, Slic3r::Model::Instance->new(object => $self, @_);
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$self->model->_bounding_box(undef);
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return $self->instances->[-1];
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}
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sub mesh {
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my $self = shift;
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# this mesh won't be suitable for check_manifoldness as multiple
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# facets from different volumes may use the same vertices
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return Slic3r::TriangleMesh->new(
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vertices => $self->vertices,
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facets => [ map @{$_->facets}, @{$self->volumes} ],
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);
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}
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sub used_vertices {
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my $self = shift;
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return [ map $self->vertices->[$_], map @$_, map @{$_->facets}, @{$self->volumes} ];
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}
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sub size {
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my $self = shift;
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return $self->bounding_box->size;
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}
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sub center {
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my $self = shift;
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return $self->bounding_box->center;
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}
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sub bounding_box {
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my $self = shift;
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if (!defined $self->_bounding_box) {
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$self->_bounding_box(Slic3r::Geometry::BoundingBox->new_from_points_3D($self->used_vertices));
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}
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return $self->_bounding_box;
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}
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sub align_to_origin {
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my $self = shift;
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# calculate the displacements needed to
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# have lowest value for each axis at coordinate 0
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my $bb = $self->bounding_box;
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my @shift = map -$bb->extents->[$_][MIN], X,Y,Z;
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$self->move(@shift);
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return @shift;
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}
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sub move {
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my $self = shift;
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my @shift = @_;
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@{$self->vertices} = move_points_3D([ @shift ], @{$self->vertices});
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$self->_bounding_box->translate(@shift) if defined $self->_bounding_box;
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}
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sub scale {
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my $self = shift;
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my ($factor) = @_;
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return if $factor == 1;
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# transform vertex coordinates
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foreach my $vertex (@{$self->vertices}) {
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$vertex->[$_] *= $factor for X,Y,Z;
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}
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$self->_bounding_box->scale($factor) if defined $self->_bounding_box;
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}
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sub rotate {
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my $self = shift;
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my ($deg) = @_;
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return if $deg == 0;
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my $rad = Slic3r::Geometry::deg2rad($deg);
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# transform vertex coordinates
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foreach my $vertex (@{$self->vertices}) {
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@$vertex = (@{ +(Slic3r::Geometry::rotate_points($rad, undef, [ $vertex->[X], $vertex->[Y] ]))[0] }, $vertex->[Z]);
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}
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$self->_bounding_box(undef);
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}
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sub materials_count {
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my $self = shift;
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my %materials = map { $_->material_id // '_default' => 1 } @{$self->volumes};
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return scalar keys %materials;
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}
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sub check_manifoldness {
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my $self = shift;
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return (first { !$_->mesh->check_manifoldness } @{$self->volumes}) ? 0 : 1;
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}
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sub clone { dclone($_[0]) }
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package Slic3r::Model::Volume;
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use Moo;
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has 'object' => (is => 'ro', weak_ref => 1, required => 1);
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has 'material_id' => (is => 'rw');
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has 'facets' => (is => 'rw', default => sub { [] });
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sub mesh {
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my $self = shift;
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return Slic3r::TriangleMesh->new(
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vertices => $self->object->vertices,
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facets => $self->facets,
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);
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}
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package Slic3r::Model::Instance;
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use Moo;
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has 'object' => (is => 'ro', weak_ref => 1, required => 1);
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has 'rotation' => (is => 'rw', default => sub { 0 }); # around mesh center point
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has 'scaling_factor' => (is => 'rw', default => sub { 1 });
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has 'offset' => (is => 'rw'); # must be Slic3r::Point object
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1;
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