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667 lines
33 KiB
Perl
667 lines
33 KiB
Perl
package Slic3r::Print::Object;
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# extends c++ class Slic3r::PrintObject (Print.xsp)
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use strict;
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use warnings;
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use List::Util qw(min max sum first);
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use Slic3r::Flow ':roles';
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use Slic3r::Geometry qw(X Y Z PI scale unscale chained_path epsilon);
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use Slic3r::Geometry::Clipper qw(diff diff_ex intersection intersection_ex union union_ex
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offset offset_ex offset2 offset2_ex JT_MITER);
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use Slic3r::Print::State ':steps';
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use Slic3r::Surface ':types';
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# If enabled, phases of prepare_infill will be written into SVG files to an "out" directory.
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our $SLIC3R_DEBUG_SLICE_PROCESSING = 0;
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sub region_volumes {
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my $self = shift;
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return [ map $self->get_region_volumes($_), 0..($self->region_count - 1) ];
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}
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sub layers {
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my $self = shift;
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return [ map $self->get_layer($_), 0..($self->layer_count - 1) ];
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}
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sub support_layers {
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my $self = shift;
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return [ map $self->get_support_layer($_), 0..($self->support_layer_count - 1) ];
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}
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# 1) Decides Z positions of the layers,
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# 2) Initializes layers and their regions
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# 3) Slices the object meshes
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# 4) Slices the modifier meshes and reclassifies the slices of the object meshes by the slices of the modifier meshes
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# 5) Applies size compensation (offsets the slices in XY plane)
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# 6) Replaces bad slices by the slices reconstructed from the upper/lower layer
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# Resulting expolygons of layer regions are marked as Internal.
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#
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# this should be idempotent
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sub slice {
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my $self = shift;
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return if $self->step_done(STEP_SLICE);
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$self->set_step_started(STEP_SLICE);
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$self->print->status_cb->(10, "Processing triangulated mesh");
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$self->_slice;
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my $warning = $self->_fix_slicing_errors;
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warn $warning if (defined($warning) && $warning ne '');
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# simplify slices if required
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$self->_simplify_slices(scale($self->print->config->resolution))
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if ($self->print->config->resolution);
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die "No layers were detected. You might want to repair your STL file(s) or check their size or thickness and retry.\n"
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if !@{$self->layers};
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$self->set_typed_slices(0);
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$self->set_step_done(STEP_SLICE);
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}
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# 1) Merges typed region slices into stInternal type.
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# 2) Increases an "extra perimeters" counter at region slices where needed.
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# 3) Generates perimeters, gap fills and fill regions (fill regions of type stInternal).
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sub make_perimeters {
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my ($self) = @_;
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# prerequisites
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$self->slice;
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$self->print->status_cb->(20, "Generating perimeters");
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$self->_make_perimeters;
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}
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sub prepare_infill {
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my ($self) = @_;
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# prerequisites
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$self->make_perimeters;
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return if $self->step_done(STEP_PREPARE_INFILL);
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$self->set_step_started(STEP_PREPARE_INFILL);
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$self->print->status_cb->(30, "Preparing infill");
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# This will assign a type (top/bottom/internal) to $layerm->slices.
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# Then the classifcation of $layerm->slices is transfered onto
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# the $layerm->fill_surfaces by clipping $layerm->fill_surfaces
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# by the cummulative area of the previous $layerm->fill_surfaces.
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$self->detect_surfaces_type;
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# Mark the object to have the region slices classified (typed, which also means they are split based on whether they are supported, bridging, top layers etc.)
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$self->set_typed_slices(1);
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# Decide what surfaces are to be filled.
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# Here the S_TYPE_TOP / S_TYPE_BOTTOMBRIDGE / S_TYPE_BOTTOM infill is turned to just S_TYPE_INTERNAL if zero top / bottom infill layers are configured.
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# Also tiny S_TYPE_INTERNAL surfaces are turned to S_TYPE_INTERNAL_SOLID.
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# BOOST_LOG_TRIVIAL(info) << "Preparing fill surfaces...";
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$_->prepare_fill_surfaces for map @{$_->regions}, @{$self->layers};
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# this will detect bridges and reverse bridges
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# and rearrange top/bottom/internal surfaces
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# It produces enlarged overlapping bridging areas.
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#
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# 1) S_TYPE_BOTTOMBRIDGE / S_TYPE_BOTTOM infill is grown by 3mm and clipped by the total infill area. Bridges are detected. The areas may overlap.
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# 2) S_TYPE_TOP is grown by 3mm and clipped by the grown bottom areas. The areas may overlap.
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# 3) Clip the internal surfaces by the grown top/bottom surfaces.
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# 4) Merge surfaces with the same style. This will mostly get rid of the overlaps.
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#FIXME This does not likely merge surfaces, which are supported by a material with different colors, but same properties.
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$self->process_external_surfaces;
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# Add solid fills to ensure the shell vertical thickness.
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$self->discover_vertical_shells;
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# Debugging output.
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if ($SLIC3R_DEBUG_SLICE_PROCESSING) {
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for my $region_id (0 .. ($self->print->region_count-1)) {
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for (my $i = 0; $i < $self->layer_count; $i++) {
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my $layerm = $self->get_layer($i)->regions->[$region_id];
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$layerm->export_region_slices_to_svg_debug("6_discover_vertical_shells-final");
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$layerm->export_region_fill_surfaces_to_svg_debug("6_discover_vertical_shells-final");
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} # for each layer
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} # for each region
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}
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# Detect, which fill surfaces are near external layers.
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# They will be split in internal and internal-solid surfaces.
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# The purpose is to add a configurable number of solid layers to support the TOP surfaces
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# and to add a configurable number of solid layers above the BOTTOM / BOTTOMBRIDGE surfaces
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# to close these surfaces reliably.
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#FIXME Vojtech: Is this a good place to add supporting infills below sloping perimeters?
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$self->discover_horizontal_shells;
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if ($SLIC3R_DEBUG_SLICE_PROCESSING) {
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# Debugging output.
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for my $region_id (0 .. ($self->print->region_count-1)) {
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for (my $i = 0; $i < $self->layer_count; $i++) {
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my $layerm = $self->get_layer($i)->regions->[$region_id];
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$layerm->export_region_slices_to_svg_debug("7_discover_horizontal_shells-final");
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$layerm->export_region_fill_surfaces_to_svg_debug("7_discover_horizontal_shells-final");
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} # for each layer
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} # for each region
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}
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# Only active if config->infill_only_where_needed. This step trims the sparse infill,
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# so it acts as an internal support. It maintains all other infill types intact.
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# Here the internal surfaces and perimeters have to be supported by the sparse infill.
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#FIXME The surfaces are supported by a sparse infill, but the sparse infill is only as large as the area to support.
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# Likely the sparse infill will not be anchored correctly, so it will not work as intended.
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# Also one wishes the perimeters to be supported by a full infill.
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$self->clip_fill_surfaces;
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if ($SLIC3R_DEBUG_SLICE_PROCESSING) {
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# Debugging output.
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for my $region_id (0 .. ($self->print->region_count-1)) {
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for (my $i = 0; $i < $self->layer_count; $i++) {
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my $layerm = $self->get_layer($i)->regions->[$region_id];
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$layerm->export_region_slices_to_svg_debug("8_clip_surfaces-final");
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$layerm->export_region_fill_surfaces_to_svg_debug("8_clip_surfaces-final");
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} # for each layer
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} # for each region
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}
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# the following step needs to be done before combination because it may need
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# to remove only half of the combined infill
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$self->bridge_over_infill;
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# combine fill surfaces to honor the "infill every N layers" option
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$self->combine_infill;
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# Debugging output.
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if ($SLIC3R_DEBUG_SLICE_PROCESSING) {
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for my $region_id (0 .. ($self->print->region_count-1)) {
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for (my $i = 0; $i < $self->layer_count; $i++) {
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my $layerm = $self->get_layer($i)->regions->[$region_id];
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$layerm->export_region_slices_to_svg_debug("9_prepare_infill-final");
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$layerm->export_region_fill_surfaces_to_svg_debug("9_prepare_infill-final");
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} # for each layer
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} # for each region
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for (my $i = 0; $i < $self->layer_count; $i++) {
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my $layer = $self->get_layer($i);
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$layer->export_region_slices_to_svg_debug("9_prepare_infill-final");
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$layer->export_region_fill_surfaces_to_svg_debug("9_prepare_infill-final");
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} # for each layer
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}
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$self->set_step_done(STEP_PREPARE_INFILL);
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}
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sub infill {
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my ($self) = @_;
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# prerequisites
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$self->prepare_infill;
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$self->_infill;
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}
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sub generate_support_material {
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my $self = shift;
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# prerequisites
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$self->slice;
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return if $self->step_done(STEP_SUPPORTMATERIAL);
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$self->set_step_started(STEP_SUPPORTMATERIAL);
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$self->clear_support_layers;
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if (($self->config->support_material || $self->config->raft_layers > 0) && scalar(@{$self->layers}) > 1) {
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$self->print->status_cb->(85, "Generating support material");
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# New supports, C++ implementation.
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$self->_generate_support_material;
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}
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$self->set_step_done(STEP_SUPPORTMATERIAL);
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my $stats = sprintf "Weight: %.1fg, Cost: %.1f" , $self->print->total_weight, $self->print->total_cost;
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$self->print->status_cb->(85, $stats);
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}
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# Idempotence of this method is guaranteed by the fact that we don't remove things from
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# fill_surfaces but we only turn them into VOID surfaces, thus preserving the boundaries.
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sub clip_fill_surfaces {
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my $self = shift;
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return unless $self->config->infill_only_where_needed;
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# We only want infill under ceilings; this is almost like an
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# internal support material.
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# proceed top-down skipping bottom layer
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my $upper_internal = [];
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for my $layer_id (reverse 1..($self->layer_count - 1)) {
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my $layer = $self->get_layer($layer_id);
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my $lower_layer = $self->get_layer($layer_id-1);
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# detect things that we need to support
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my $overhangs = []; # Polygons
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# we need to support any solid surface
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push @$overhangs, map $_->p,
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grep $_->is_solid, map @{$_->fill_surfaces}, @{$layer->regions};
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# we also need to support perimeters when there's at least one full
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# unsupported loop
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{
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# get perimeters area as the difference between slices and fill_surfaces
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my $perimeters = diff(
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[ map @$_, @{$layer->slices} ],
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[ map $_->p, map @{$_->fill_surfaces}, @{$layer->regions} ],
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);
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# only consider the area that is not supported by lower perimeters
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$perimeters = intersection(
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$perimeters,
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[ map $_->p, map @{$_->fill_surfaces}, @{$lower_layer->regions} ],
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1,
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);
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# only consider perimeter areas that are at least one extrusion width thick
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#FIXME Offset2 eats out from both sides, while the perimeters are create outside in.
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#Should the $pw not be half of the current value?
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my $pw = min(map $_->flow(FLOW_ROLE_PERIMETER)->scaled_width, @{$layer->regions});
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$perimeters = offset2($perimeters, -$pw, +$pw);
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# append such thick perimeters to the areas that need support
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push @$overhangs, @$perimeters;
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}
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# find new internal infill
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$upper_internal = my $new_internal = intersection(
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[
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@$overhangs,
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@$upper_internal,
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],
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[
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# our current internal fill boundaries
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map $_->p,
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grep $_->surface_type == S_TYPE_INTERNAL || $_->surface_type == S_TYPE_INTERNALVOID,
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map @{$_->fill_surfaces}, @{$lower_layer->regions}
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],
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);
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# apply new internal infill to regions
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foreach my $layerm (@{$lower_layer->regions}) {
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my (@internal, @other) = ();
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foreach my $surface (map $_->clone, @{$layerm->fill_surfaces}) {
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if ($surface->surface_type == S_TYPE_INTERNAL || $surface->surface_type == S_TYPE_INTERNALVOID) {
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push @internal, $surface;
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} else {
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push @other, $surface;
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}
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}
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my @new = map Slic3r::Surface->new(
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expolygon => $_,
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surface_type => S_TYPE_INTERNAL,
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),
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@{intersection_ex(
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[ map $_->p, @internal ],
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$new_internal,
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1,
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)};
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push @other, map Slic3r::Surface->new(
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expolygon => $_,
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surface_type => S_TYPE_INTERNALVOID,
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),
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@{diff_ex(
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[ map $_->p, @internal ],
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$new_internal,
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1,
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)};
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# If there are voids it means that our internal infill is not adjacent to
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# perimeters. In this case it would be nice to add a loop around infill to
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# make it more robust and nicer. TODO.
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$layerm->fill_surfaces->clear;
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$layerm->fill_surfaces->append($_) for (@new, @other);
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if ($SLIC3R_DEBUG_SLICE_PROCESSING) {
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$layerm->export_region_fill_surfaces_to_svg_debug("6_clip_fill_surfaces");
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}
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}
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}
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}
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sub discover_horizontal_shells {
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my $self = shift;
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Slic3r::debugf "==> DISCOVERING HORIZONTAL SHELLS\n";
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for my $region_id (0 .. ($self->print->region_count-1)) {
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for (my $i = 0; $i < $self->layer_count; $i++) {
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my $layerm = $self->get_layer($i)->regions->[$region_id];
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if ($layerm->region->config->solid_infill_every_layers && $layerm->region->config->fill_density > 0
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&& ($i % $layerm->region->config->solid_infill_every_layers) == 0) {
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# This is the layer to put the sparse infill in. Mark S_TYPE_INTERNAL surfaces as S_TYPE_INTERNALSOLID or S_TYPE_INTERNALBRIDGE.
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# If the sparse infill is not active, the internal surfaces are of type S_TYPE_INTERNAL.
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my $type = $layerm->region->config->fill_density == 100 ? S_TYPE_INTERNALSOLID : S_TYPE_INTERNALBRIDGE;
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$_->surface_type($type) for @{$layerm->fill_surfaces->filter_by_type(S_TYPE_INTERNAL)};
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}
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# If ensure_vertical_shell_thickness, then the rest has already been performed by discover_vertical_shells().
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next if ($layerm->region->config->ensure_vertical_shell_thickness);
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EXTERNAL: foreach my $type (S_TYPE_TOP, S_TYPE_BOTTOM, S_TYPE_BOTTOMBRIDGE) {
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# find slices of current type for current layer
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# use slices instead of fill_surfaces because they also include the perimeter area
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# which needs to be propagated in shells; we need to grow slices like we did for
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# fill_surfaces though. Using both ungrown slices and grown fill_surfaces will
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# not work in some situations, as there won't be any grown region in the perimeter
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# area (this was seen in a model where the top layer had one extra perimeter, thus
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# its fill_surfaces were thinner than the lower layer's infill), however it's the best
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# solution so far. Growing the external slices by EXTERNAL_INFILL_MARGIN will put
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# too much solid infill inside nearly-vertical slopes.
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my $solid = [
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# Surfaces including the area of perimeters. Everything, that is visible from the top / bottom
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# (not covered by a layer above / below).
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# This does not contain the areas covered by perimeters!
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(map $_->p, @{$layerm->slices->filter_by_type($type)}),
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# Infill areas (slices without the perimeters).
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(map $_->p, @{$layerm->fill_surfaces->filter_by_type($type)}),
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];
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next if !@$solid;
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Slic3r::debugf "Layer %d has %s surfaces\n", $i, ($type == S_TYPE_TOP) ? 'top' : 'bottom';
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my $solid_layers = ($type == S_TYPE_TOP)
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? $layerm->region->config->top_solid_layers
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: $layerm->region->config->bottom_solid_layers;
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NEIGHBOR: for (my $n = ($type == S_TYPE_TOP) ? $i-1 : $i+1;
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abs($n - $i) < $solid_layers;
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($type == S_TYPE_TOP) ? $n-- : $n++) {
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next if $n < 0 || $n >= $self->layer_count;
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Slic3r::debugf " looking for neighbors on layer %d...\n", $n;
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# Reference to the lower layer of a TOP surface, or an upper layer of a BOTTOM surface.
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my $neighbor_layerm = $self->get_layer($n)->regions->[$region_id];
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# Reference to the neighbour fill surfaces.
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my $neighbor_fill_surfaces = $neighbor_layerm->fill_surfaces;
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# Clone because we will use these surfaces even after clearing the collection.
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my @neighbor_fill_surfaces = map $_->clone, @$neighbor_fill_surfaces;
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# find intersection between neighbor and current layer's surfaces
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# intersections have contours and holes
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# we update $solid so that we limit the next neighbor layer to the areas that were
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# found on this one - in other words, solid shells on one layer (for a given external surface)
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# are always a subset of the shells found on the previous shell layer
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# this approach allows for DWIM in hollow sloping vases, where we want bottom
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# shells to be generated in the base but not in the walls (where there are many
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# narrow bottom surfaces): reassigning $solid will consider the 'shadow' of the
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# upper perimeter as an obstacle and shell will not be propagated to more upper layers
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#FIXME How does it work for S_TYPE_INTERNALBRIDGE? This is set for sparse infill. Likely this does not work.
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my $new_internal_solid = $solid = intersection(
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$solid,
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[ map $_->p, grep { ($_->surface_type == S_TYPE_INTERNAL) || ($_->surface_type == S_TYPE_INTERNALSOLID) } @neighbor_fill_surfaces ],
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1,
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);
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next EXTERNAL if !@$new_internal_solid;
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if ($layerm->region->config->fill_density == 0) {
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# if we're printing a hollow object we discard any solid shell thinner
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# than a perimeter width, since it's probably just crossing a sloping wall
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# and it's not wanted in a hollow print even if it would make sense when
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# obeying the solid shell count option strictly (DWIM!)
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my $margin = $neighbor_layerm->flow(FLOW_ROLE_EXTERNAL_PERIMETER)->scaled_width;
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my $regularized = offset2($new_internal_solid, -$margin, +$margin, JT_MITER, 5);
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my $too_narrow = diff(
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$new_internal_solid,
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$regularized,
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1,
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);
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# Trim the regularized region by the original region.
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$new_internal_solid = $solid = intersection(
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$new_internal_solid,
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$regularized,
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) if @$too_narrow;
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}
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# make sure the new internal solid is wide enough, as it might get collapsed
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# when spacing is added in Fill.pm
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if ($layerm->region->config->ensure_vertical_shell_thickness) {
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|
# The possible thin sickles of top / bottom surfaces on steeply sloping surfaces touch
|
|
# the projections of top / bottom perimeters, therefore they will be sufficiently inflated by
|
|
# merging them with the projections of the top / bottom perimeters.
|
|
} else {
|
|
#FIXME Vojtech: Disable this and you will be sorry.
|
|
# https://github.com/prusa3d/Slic3r/issues/26 bottom
|
|
my $margin = 3 * $layerm->flow(FLOW_ROLE_SOLID_INFILL)->scaled_width; # require at least this size
|
|
# we use a higher miterLimit here to handle areas with acute angles
|
|
# in those cases, the default miterLimit would cut the corner and we'd
|
|
# get a triangle in $too_narrow; if we grow it below then the shell
|
|
# would have a different shape from the external surface and we'd still
|
|
# have the same angle, so the next shell would be grown even more and so on.
|
|
my $too_narrow = diff(
|
|
$new_internal_solid,
|
|
offset2($new_internal_solid, -$margin, +$margin, JT_MITER, 5),
|
|
1,
|
|
);
|
|
|
|
if (@$too_narrow) {
|
|
# grow the collapsing parts and add the extra area to the neighbor layer
|
|
# as well as to our original surfaces so that we support this
|
|
# additional area in the next shell too
|
|
|
|
# make sure our grown surfaces don't exceed the fill area
|
|
my @grown = @{intersection(
|
|
offset($too_narrow, +$margin),
|
|
# Discard bridges as they are grown for anchoring and we can't
|
|
# remove such anchors. (This may happen when a bridge is being
|
|
# anchored onto a wall where little space remains after the bridge
|
|
# is grown, and that little space is an internal solid shell so
|
|
# it triggers this too_narrow logic.)
|
|
[ map $_->p, grep { $_->is_internal && !$_->is_bridge } @neighbor_fill_surfaces ],
|
|
)};
|
|
$new_internal_solid = $solid = [ @grown, @$new_internal_solid ];
|
|
}
|
|
}
|
|
|
|
# internal-solid are the union of the existing internal-solid surfaces
|
|
# and new ones
|
|
my $internal_solid = union_ex([
|
|
( map $_->p, grep $_->surface_type == S_TYPE_INTERNALSOLID, @neighbor_fill_surfaces ),
|
|
@$new_internal_solid,
|
|
]);
|
|
|
|
# subtract intersections from layer surfaces to get resulting internal surfaces
|
|
my $internal = diff_ex(
|
|
[ map $_->p, grep $_->surface_type == S_TYPE_INTERNAL, @neighbor_fill_surfaces ],
|
|
[ map @$_, @$internal_solid ],
|
|
1,
|
|
);
|
|
Slic3r::debugf " %d internal-solid and %d internal surfaces found\n",
|
|
scalar(@$internal_solid), scalar(@$internal);
|
|
|
|
# assign resulting internal surfaces to layer
|
|
$neighbor_fill_surfaces->clear;
|
|
$neighbor_fill_surfaces->append($_)
|
|
for map Slic3r::Surface->new(expolygon => $_, surface_type => S_TYPE_INTERNAL),
|
|
@$internal;
|
|
|
|
# assign new internal-solid surfaces to layer
|
|
$neighbor_fill_surfaces->append($_)
|
|
for map Slic3r::Surface->new(expolygon => $_, surface_type => S_TYPE_INTERNALSOLID),
|
|
@$internal_solid;
|
|
|
|
# assign top and bottom surfaces to layer
|
|
foreach my $s (@{Slic3r::Surface::Collection->new(grep { ($_->surface_type == S_TYPE_TOP) || $_->is_bottom } @neighbor_fill_surfaces)->group}) {
|
|
my $solid_surfaces = diff_ex(
|
|
[ map $_->p, @$s ],
|
|
[ map @$_, @$internal_solid, @$internal ],
|
|
1,
|
|
);
|
|
$neighbor_fill_surfaces->append($_)
|
|
for map $s->[0]->clone(expolygon => $_), @$solid_surfaces;
|
|
}
|
|
}
|
|
} # foreach my $type (S_TYPE_TOP, S_TYPE_BOTTOM, S_TYPE_BOTTOMBRIDGE)
|
|
} # for each layer
|
|
} # for each region
|
|
|
|
# Debugging output.
|
|
if ($SLIC3R_DEBUG_SLICE_PROCESSING) {
|
|
for my $region_id (0 .. ($self->print->region_count-1)) {
|
|
for (my $i = 0; $i < $self->layer_count; $i++) {
|
|
my $layerm = $self->get_layer($i)->regions->[$region_id];
|
|
$layerm->export_region_slices_to_svg_debug("5_discover_horizontal_shells");
|
|
$layerm->export_region_fill_surfaces_to_svg_debug("5_discover_horizontal_shells");
|
|
} # for each layer
|
|
} # for each region
|
|
}
|
|
}
|
|
|
|
# combine fill surfaces across layers to honor the "infill every N layers" option
|
|
# Idempotence of this method is guaranteed by the fact that we don't remove things from
|
|
# fill_surfaces but we only turn them into VOID surfaces, thus preserving the boundaries.
|
|
sub combine_infill {
|
|
my $self = shift;
|
|
|
|
# define the type used for voids
|
|
my %voidtype = (
|
|
&S_TYPE_INTERNAL() => S_TYPE_INTERNALVOID,
|
|
);
|
|
|
|
# work on each region separately
|
|
for my $region_id (0 .. ($self->print->region_count-1)) {
|
|
my $region = $self->print->get_region($region_id);
|
|
my $every = $region->config->infill_every_layers;
|
|
next unless $every > 1 && $region->config->fill_density > 0;
|
|
|
|
# limit the number of combined layers to the maximum height allowed by this regions' nozzle
|
|
my $nozzle_diameter = min(
|
|
$self->print->config->get_at('nozzle_diameter', $region->config->infill_extruder-1),
|
|
$self->print->config->get_at('nozzle_diameter', $region->config->solid_infill_extruder-1),
|
|
);
|
|
|
|
# define the combinations
|
|
my %combine = (); # layer_idx => number of additional combined lower layers
|
|
{
|
|
my $current_height = my $layers = 0;
|
|
for my $layer_idx (0 .. ($self->layer_count-1)) {
|
|
my $layer = $self->get_layer($layer_idx);
|
|
next if $layer->id == 0; # skip first print layer (which may not be first layer in array because of raft)
|
|
my $height = $layer->height;
|
|
|
|
# check whether the combination of this layer with the lower layers' buffer
|
|
# would exceed max layer height or max combined layer count
|
|
if ($current_height + $height >= $nozzle_diameter + epsilon || $layers >= $every) {
|
|
# append combination to lower layer
|
|
$combine{$layer_idx-1} = $layers;
|
|
$current_height = $layers = 0;
|
|
}
|
|
|
|
$current_height += $height;
|
|
$layers++;
|
|
}
|
|
|
|
# append lower layers (if any) to uppermost layer
|
|
$combine{$self->layer_count-1} = $layers;
|
|
}
|
|
|
|
# loop through layers to which we have assigned layers to combine
|
|
for my $layer_idx (sort keys %combine) {
|
|
next unless $combine{$layer_idx} > 1;
|
|
|
|
# get all the LayerRegion objects to be combined
|
|
my @layerms = map $self->get_layer($_)->get_region($region_id),
|
|
($layer_idx - ($combine{$layer_idx}-1) .. $layer_idx);
|
|
|
|
# only combine internal infill
|
|
for my $type (S_TYPE_INTERNAL) {
|
|
# we need to perform a multi-layer intersection, so let's split it in pairs
|
|
|
|
# initialize the intersection with the candidates of the lowest layer
|
|
my $intersection = [ map $_->expolygon, @{$layerms[0]->fill_surfaces->filter_by_type($type)} ];
|
|
|
|
# start looping from the second layer and intersect the current intersection with it
|
|
for my $layerm (@layerms[1 .. $#layerms]) {
|
|
$intersection = intersection_ex(
|
|
[ map @$_, @$intersection ],
|
|
[ map @{$_->expolygon}, @{$layerm->fill_surfaces->filter_by_type($type)} ],
|
|
);
|
|
}
|
|
|
|
my $area_threshold = $layerms[0]->infill_area_threshold;
|
|
@$intersection = grep $_->area > $area_threshold, @$intersection;
|
|
next if !@$intersection;
|
|
Slic3r::debugf " combining %d %s regions from layers %d-%d\n",
|
|
scalar(@$intersection),
|
|
($type == S_TYPE_INTERNAL ? 'internal' : 'internal-solid'),
|
|
$layer_idx-($every-1), $layer_idx;
|
|
|
|
# $intersection now contains the regions that can be combined across the full amount of layers
|
|
# so let's remove those areas from all layers
|
|
|
|
my @intersection_with_clearance = map @{$_->offset(
|
|
$layerms[-1]->flow(FLOW_ROLE_SOLID_INFILL)->scaled_width / 2
|
|
+ $layerms[-1]->flow(FLOW_ROLE_PERIMETER)->scaled_width / 2
|
|
# Because fill areas for rectilinear and honeycomb are grown
|
|
# later to overlap perimeters, we need to counteract that too.
|
|
+ (($type == S_TYPE_INTERNALSOLID || $region->config->fill_pattern =~ /(rectilinear|grid|line|honeycomb)/)
|
|
? $layerms[-1]->flow(FLOW_ROLE_SOLID_INFILL)->scaled_width
|
|
: 0)
|
|
)}, @$intersection;
|
|
|
|
|
|
foreach my $layerm (@layerms) {
|
|
my @this_type = @{$layerm->fill_surfaces->filter_by_type($type)};
|
|
my @other_types = map $_->clone, grep $_->surface_type != $type, @{$layerm->fill_surfaces};
|
|
|
|
my @new_this_type = map Slic3r::Surface->new(expolygon => $_, surface_type => $type),
|
|
@{diff_ex(
|
|
[ map $_->p, @this_type ],
|
|
[ @intersection_with_clearance ],
|
|
)};
|
|
|
|
# apply surfaces back with adjusted depth to the uppermost layer
|
|
if ($layerm->layer->id == $self->get_layer($layer_idx)->id) {
|
|
push @new_this_type,
|
|
map Slic3r::Surface->new(
|
|
expolygon => $_,
|
|
surface_type => $type,
|
|
thickness => sum(map $_->layer->height, @layerms),
|
|
thickness_layers => scalar(@layerms),
|
|
),
|
|
@$intersection;
|
|
} else {
|
|
# save void surfaces
|
|
push @new_this_type,
|
|
map Slic3r::Surface->new(expolygon => $_, surface_type => $voidtype{$type}),
|
|
@{intersection_ex(
|
|
[ map @{$_->expolygon}, @this_type ],
|
|
[ @intersection_with_clearance ],
|
|
)};
|
|
}
|
|
|
|
$layerm->fill_surfaces->clear;
|
|
$layerm->fill_surfaces->append($_) for (@new_this_type, @other_types);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
# Used by t/support.t and by GCode.pm to export support line width as a comment.
|
|
# To be removed.
|
|
sub support_material_flow {
|
|
my ($self, $role) = @_;
|
|
|
|
$role //= FLOW_ROLE_SUPPORT_MATERIAL;
|
|
my $extruder = ($role == FLOW_ROLE_SUPPORT_MATERIAL)
|
|
? $self->config->support_material_extruder
|
|
: $self->config->support_material_interface_extruder;
|
|
|
|
# we use a bogus layer_height because we use the same flow for all
|
|
# support material layers
|
|
return Slic3r::Flow->new_from_width(
|
|
width => $self->config->support_material_extrusion_width || $self->config->extrusion_width,
|
|
role => $role,
|
|
nozzle_diameter => $self->print->config->nozzle_diameter->[$extruder-1] // $self->print->config->nozzle_diameter->[0],
|
|
layer_height => $self->config->layer_height,
|
|
bridge_flow_ratio => 0,
|
|
);
|
|
}
|
|
|
|
1;
|