mirror of https://github.com/vitalif/Slic3r
558 lines
17 KiB
Perl
558 lines
17 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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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 add_object {
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my $self = shift;
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my $new_object;
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if (@_ == 1) {
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# we have a Model::Object
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my ($object) = @_;
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$new_object = $self->add_object(
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input_file => $object->input_file,
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config => $object->config,
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layer_height_ranges => $object->layer_height_ranges, # TODO: clone!
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);
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foreach my $volume (@{$object->volumes}) {
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$new_object->add_volume($volume);
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}
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$new_object->add_instance(
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offset => $_->offset,
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rotation => $_->rotation,
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scaling_factor => $_->scaling_factor,
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) for @{ $object->instances // [] };
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} else {
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push @{$self->objects}, $new_object = Slic3r::Model::Object->new(model => $self, @_);
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}
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return $new_object;
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}
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sub delete_object {
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my ($self, $obj_idx) = @_;
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splice @{$self->objects}, $obj_idx, 1;
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}
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sub delete_all_objects {
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my ($self) = @_;
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@{$self->objects} = ();
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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::Material->new(
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model => $self,
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attributes => $attributes || {},
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);
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}
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sub duplicate_objects_grid {
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my ($self, $grid, $distance) = @_;
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die "Grid duplication is not supported with multiple objects\n"
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if @{$self->objects} > 1;
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my $object = $self->objects->[0];
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@{$object->instances} = ();
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my $size = $object->bounding_box->size;
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for my $x_copy (1..$grid->[X]) {
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for my $y_copy (1..$grid->[Y]) {
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$object->add_instance(
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offset => [
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($size->[X] + $distance) * ($x_copy-1),
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($size->[Y] + $distance) * ($y_copy-1),
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],
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);
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}
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}
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}
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# this will append more instances to each object
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# and then automatically rearrange everything
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sub duplicate_objects {
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my ($self, $copies_num, $distance, $bb) = @_;
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foreach my $object (@{$self->objects}) {
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my @instances = @{$object->instances};
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foreach my $instance (@instances) {
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### $object->add_instance($instance->clone); if we had clone()
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$object->add_instance(
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offset => [ @{$instance->offset} ],
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rotation => $instance->rotation,
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scaling_factor => $instance->scaling_factor,
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) for 2..$copies_num;
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}
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}
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$self->arrange_objects($distance, $bb);
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}
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# arrange objects preserving their instance count
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# but altering their instance positions
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sub arrange_objects {
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my ($self, $distance, $bb) = @_;
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# get the (transformed) size of each instance so that we take
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# into account their different transformations when packing
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my @instance_sizes = ();
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foreach my $object (@{$self->objects}) {
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push @instance_sizes, map $object->instance_bounding_box($_)->size, 0..$#{$object->instances};
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}
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my @positions = $self->_arrange(\@instance_sizes, $distance, $bb);
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foreach my $object (@{$self->objects}) {
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$_->offset([ @{shift @positions} ]) for @{$object->instances};
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$object->update_bounding_box;
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}
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}
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# duplicate the entire model preserving instance relative positions
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sub duplicate {
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my ($self, $copies_num, $distance, $bb) = @_;
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my $model_size = $self->bounding_box->size;
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my @positions = $self->_arrange([ map $model_size, 2..$copies_num ], $distance, $bb);
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# note that this will leave the object count unaltered
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foreach my $object (@{$self->objects}) {
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my @instances = @{$object->instances}; # store separately to avoid recursion from add_instance() below
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foreach my $instance (@instances) {
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foreach my $pos (@positions) {
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### $object->add_instance($instance->clone); if we had clone()
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$object->add_instance(
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offset => [ $instance->offset->[X] + $pos->[X], $instance->offset->[Y] + $pos->[Y] ],
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rotation => $instance->rotation,
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scaling_factor => $instance->scaling_factor,
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);
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}
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}
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$object->update_bounding_box;
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}
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}
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sub _arrange {
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my ($self, $sizes, $distance, $bb) = @_;
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return Slic3r::Geometry::arrange(
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scalar(@$sizes), # number of parts
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max(map $_->x, @$sizes), # cell width
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max(map $_->y, @$sizes), # cell height ,
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$distance, # distance between cells
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$bb, # bounding box of the area to fill (can be undef)
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);
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}
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sub has_objects_with_no_instances {
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my ($self) = @_;
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return (first { !defined $_->instances } @{$self->objects}) ? 1 : 0;
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}
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# this returns the bounding box of the *transformed* instances
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sub bounding_box {
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my $self = shift;
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return undef if !@{$self->objects};
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my $bb = $self->objects->[0]->bounding_box;
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$bb->merge($_->bounding_box) for @{$self->objects}[1..$#{$self->objects}];
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return $bb;
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}
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# input point is expressed in unscaled coordinates
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sub center_instances_around_point {
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my ($self, $point) = @_;
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my $bb = $self->bounding_box;
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return if !defined $bb;
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my $size = $bb->size;
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my @shift = (
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-$bb->x_min + $point->[X] - $size->x/2,
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-$bb->y_min + $point->[Y] - $size->y/2, #//
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);
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foreach my $object (@{$self->objects}) {
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foreach my $instance (@{$object->instances}) {
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$instance->offset->[X] += $shift[X];
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$instance->offset->[Y] += $shift[Y];
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}
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$object->update_bounding_box;
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}
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}
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sub translate {
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my $self = shift;
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my @shift = @_;
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$_->translate(@shift) for @{$self->objects};
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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 $mesh = Slic3r::TriangleMesh->new;
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$mesh->merge($_->mesh) for @{$self->objects};
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return $mesh;
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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}) {
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my $new_object = $self->add_object(
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input_file => $object->input_file,
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config => $object->config->clone,
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layer_height_ranges => $object->layer_height_ranges, # TODO: this needs to be cloned
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);
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$new_object->add_volume(
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mesh => $mesh,
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material_id => $volume->material_id,
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);
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# add one instance per original instance
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$new_object->add_instance(
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offset => [ @{$_->offset} ],
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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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sub print_info {
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my $self = shift;
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$_->print_info for @{$self->objects};
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}
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sub get_material_name {
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my $self = shift;
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my ($material_id) = @_;
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my $name;
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if (exists $self->materials->{$material_id}) {
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$name //= $self->materials->{$material_id}->attributes->{$_} for qw(Name name);
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}
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$name //= $material_id;
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return $name;
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}
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package Slic3r::Model::Material;
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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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has 'config' => (is => 'rw', default => sub { Slic3r::Config->new });
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package Slic3r::Model::Object;
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use Moo;
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use File::Basename qw(basename);
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use List::Util qw(first sum);
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use Slic3r::Geometry qw(X Y Z MIN MAX);
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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 'volumes' => (is => 'ro', default => sub { [] });
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has 'instances' => (is => 'rw');
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has 'config' => (is => 'rw', default => sub { Slic3r::Config->new });
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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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has 'origin_translation' => (is => 'ro', default => sub { Slic3r::Point->new }); # translation vector applied by center_around_origin()
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sub add_volume {
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my $self = shift;
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my $new_volume;
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if (@_ == 1) {
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# we have a Model::Volume
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my ($volume) = @_;
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$new_volume = Slic3r::Model::Volume->new(
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object => $self,
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material_id => $volume->material_id,
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mesh => $volume->mesh->clone,
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modifier => $volume->modifier,
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);
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if (defined $volume->material_id) {
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# merge material attributes and config (should we rename materials in case of duplicates?)
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if (my $material = $volume->object->model->materials->{$volume->material_id}) {
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my %attributes = %{ $material->attributes };
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if (exists $self->model->materials->{$volume->material_id}) {
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%attributes = (%attributes, %{ $self->model->materials->{$volume->material_id}->attributes })
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}
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my $new_material = $self->model->set_material($volume->material_id, {%attributes});
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$new_material->config->apply($material->config);
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}
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}
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} else {
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my %args = @_;
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$new_volume = Slic3r::Model::Volume->new(
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object => $self,
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%args,
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);
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}
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push @{$self->volumes}, $new_volume;
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# invalidate cached bounding box
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$self->_bounding_box(undef);
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return $new_volume;
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}
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sub delete_volume {
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my ($self, $i) = @_;
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splice @{$self->volumes}, $i, 1;
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}
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sub add_instance {
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my $self = shift;
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my %params = @_;
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$self->instances([]) if !defined $self->instances;
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push @{$self->instances}, my $i = Slic3r::Model::Instance->new(object => $self, %params);
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$self->_bounding_box(undef);
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return $i;
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}
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sub delete_last_instance {
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my ($self) = @_;
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pop @{$self->instances};
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$self->_bounding_box(undef);
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}
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sub instances_count {
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my $self = shift;
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return scalar(@{ $self->instances // [] });
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}
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sub raw_mesh {
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my $self = shift;
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my $mesh = Slic3r::TriangleMesh->new;
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$mesh->merge($_->mesh) for grep !$_->modifier, @{ $self->volumes };
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return $mesh;
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}
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# flattens all volumes and instances into a single mesh
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sub mesh {
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my $self = shift;
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my $mesh = $self->raw_mesh;
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my @instance_meshes = ();
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foreach my $instance (@{ $self->instances }) {
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my $m = $mesh->clone;
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$instance->transform_mesh($m);
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push @instance_meshes, $m;
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}
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my $full_mesh = Slic3r::TriangleMesh->new;
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$full_mesh->merge($_) for @instance_meshes;
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return $full_mesh;
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}
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sub update_bounding_box {
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my ($self) = @_;
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$self->_bounding_box($self->mesh->bounding_box);
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}
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# this returns the bounding box of the *transformed* instances
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sub bounding_box {
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my $self = shift;
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$self->update_bounding_box if !defined $self->_bounding_box;
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return $self->_bounding_box->clone;
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}
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# this returns the bounding box of the *transformed* given instance
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sub instance_bounding_box {
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my ($self, $instance_idx) = @_;
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my $mesh = $self->raw_mesh;
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$self->instances->[$instance_idx]->transform_mesh($mesh);
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return $mesh->bounding_box;
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}
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sub center_around_origin {
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my $self = shift;
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# calculate the displacements needed to
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# center this object around the origin
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my $bb = $self->raw_mesh->bounding_box;
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# first align to origin on XY
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my @shift = (
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-$bb->x_min,
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-$bb->y_min,
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0,
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);
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# then center it on XY
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my $size = $bb->size;
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$shift[X] -= $size->x/2;
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$shift[Y] -= $size->y/2; #//
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$self->translate(@shift);
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$self->origin_translation->translate(@shift[X,Y]);
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if (defined $self->instances) {
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foreach my $instance (@{ $self->instances }) {
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$instance->offset->[X] -= $shift[X];
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$instance->offset->[Y] -= $shift[Y];
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}
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$self->update_bounding_box;
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}
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return @shift;
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}
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sub translate {
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my $self = shift;
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my @shift = @_;
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$_->mesh->translate(@shift) for @{$self->volumes};
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$self->_bounding_box->translate(@shift) if defined $self->_bounding_box;
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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 unique_materials {
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my $self = shift;
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my %materials = ();
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$materials{ $_->material_id } = 1
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for grep { defined $_->material_id } @{$self->volumes};
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return sort keys %materials;
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}
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sub facets_count {
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my $self = shift;
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return sum(map $_->mesh->facets_count, grep !$_->modifier, @{$self->volumes});
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}
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sub needed_repair {
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my $self = shift;
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return (first { !$_->mesh->needed_repair } grep !$_->modifier, @{$self->volumes}) ? 0 : 1;
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}
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sub mesh_stats {
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my $self = shift;
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# TODO: sum values from all volumes
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return $self->volumes->[0]->mesh->stats;
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}
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sub print_info {
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my $self = shift;
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printf "Info about %s:\n", basename($self->input_file);
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printf " size: x=%.3f y=%.3f z=%.3f\n", @{$self->raw_mesh->bounding_box->size};
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if (my $stats = $self->mesh_stats) {
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printf " number of facets: %d\n", $stats->{number_of_facets};
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printf " number of shells: %d\n", $stats->{number_of_parts};
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printf " volume: %.3f\n", $stats->{volume};
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if ($self->needed_repair) {
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printf " needed repair: yes\n";
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printf " degenerate facets: %d\n", $stats->{degenerate_facets};
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printf " edges fixed: %d\n", $stats->{edges_fixed};
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printf " facets removed: %d\n", $stats->{facets_removed};
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printf " facets added: %d\n", $stats->{facets_added};
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printf " facets reversed: %d\n", $stats->{facets_reversed};
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printf " backwards edges: %d\n", $stats->{backwards_edges};
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} else {
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printf " needed repair: no\n";
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}
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} else {
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printf " number of facets: %d\n", scalar(map @{$_->facets}, grep !$_->modifier, @{$self->volumes});
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}
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}
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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 'mesh' => (is => 'rw', required => 1);
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has 'modifier' => (is => 'rw', defualt => sub { 0 });
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sub assign_unique_material {
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my ($self) = @_;
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my $model = $self->object->model;
|
||
my $material_id = 1 + scalar keys %{$model->materials};
|
||
$self->material_id($material_id);
|
||
return $model->set_material($material_id);
|
||
}
|
||
|
||
package Slic3r::Model::Instance;
|
||
use Moo;
|
||
|
||
has 'object' => (is => 'ro', weak_ref => 1, required => 1);
|
||
has 'rotation' => (is => 'rw', default => sub { 0 }); # around mesh center point
|
||
has 'scaling_factor' => (is => 'rw', default => sub { 1 });
|
||
has 'offset' => (is => 'rw'); # must be arrayref in *unscaled* coordinates
|
||
|
||
sub transform_mesh {
|
||
my ($self, $mesh, $dont_translate) = @_;
|
||
|
||
$mesh->rotate($self->rotation, Slic3r::Point->new(0,0)); # rotate around mesh origin
|
||
$mesh->scale($self->scaling_factor); # scale around mesh origin
|
||
$mesh->translate(@{$self->offset}, 0) unless $dont_translate;
|
||
}
|
||
|
||
sub transform_polygon {
|
||
my ($self, $polygon) = @_;
|
||
|
||
$polygon->rotate($self->rotation, Slic3r::Point->new(0,0)); # rotate around origin
|
||
$polygon->scale($self->scaling_factor); # scale around origin
|
||
}
|
||
|
||
1;
|