Don't put supports under bridges and potential bridges
This commit is contained in:
Alessandro Ranellucci
parent
129b6651f6
commit
ce9cf4d964
@ -257,6 +257,8 @@ The author of the Silk icon set is Mark James.
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--support-material-enforce-layers
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Enforce support material on the specified number of layers from bottom,
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regardless of --support-material and threshold (0+, default: 0)
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--dont-support-bridges
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Experimental option for preventing support material from being generated under bridged areas (default: yes)
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Retraction options:
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--retract-length Length of retraction in mm when pausing extrusion (default: 1)
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@ -493,7 +493,8 @@ sub build {
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{
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title => 'Options for support material and raft',
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options => [qw(support_material_pattern support_material_spacing support_material_angle
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support_material_interface_layers support_material_interface_spacing)],
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support_material_interface_layers support_material_interface_spacing
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dont_support_bridges)],
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},
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]);
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@ -3,7 +3,7 @@ use Moo;
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use List::Util qw(first sum max min);
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use Slic3r::Geometry qw(PI unscale scaled_epsilon rad2deg epsilon);
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use Slic3r::Geometry::Clipper qw(intersection_pl intersection_ex union);
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use Slic3r::Geometry::Clipper qw(intersection_pl intersection_ex union offset diff_pl union_ex);
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has 'expolygon' => (is => 'ro', required => 1);
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has 'lower_slices' => (is => 'rw', required => 1); # ExPolygons or ExPolygonCollection
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@ -213,4 +213,41 @@ sub coverage {
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return $coverage;
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}
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# this method returns the bridge edges (as polylines) that are not supported
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# but would allow the entire bridge area to be bridged with detected angle
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# if supported too
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sub unsupported_edges {
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my ($self, $angle) = @_;
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if (!defined $angle) {
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return [] if !defined($angle = $self->angle);
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}
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# get bridge edges (both contour and holes)
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my @bridge_edges = map $_->split_at_first_point, @{$self->expolygon};
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$_->[0]->translate(1,0) for @bridge_edges; # workaround for Clipper bug, see comments in Slic3r::Polygon::clip_as_polyline()
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# get unsupported edges
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my $grown_lower = offset([ map @$_, @{$self->lower_slices} ], +$self->extrusion_width);
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my $unsupported = diff_pl(
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\@bridge_edges,
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$grown_lower,
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);
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if (0) {
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require "Slic3r/SVG.pm";
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Slic3r::SVG::output(
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"unsupported_" . rad2deg($angle) . ".svg",
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expolygons => [$self->expolygon],
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green_expolygons => $self->_anchors,
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red_expolygons => union_ex($grown_lower),
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no_arrows => 1,
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polylines => [ map $_->split_at_first_point, @{$self->expolygon} ],
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red_polylines => $unsupported,
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);
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}
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return $unsupported;
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}
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1;
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@ -33,6 +33,9 @@ has 'fill_surfaces' => (is => 'rw', default => sub { Slic3r::Surface::Collection
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# collection of expolygons representing the bridged areas (thus not needing support material)
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has 'bridged' => (is => 'rw', default => sub { Slic3r::ExPolygon::Collection->new });
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# collection of polylines representing the unsupported bridge edges
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has 'unsupported_bridge_edges' => (is => 'rw', default => sub { Slic3r::Polyline::Collection->new });
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# ordered collection of extrusion paths/loops to build all perimeters
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has 'perimeters' => (is => 'rw', default => sub { Slic3r::ExtrusionPath::Collection->new });
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@ -418,6 +421,7 @@ sub process_external_surfaces {
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if (defined $angle && $self->object->config->support_material) {
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$self->bridged->append(@{ $bridge_detector->coverage($angle) });
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$self->unsupported_bridge_edges->append(@{ $bridge_detector->unsupported_edges });
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}
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}
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@ -158,13 +158,34 @@ sub contact_area {
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# Void $diff means that there's no upper perimeter whose centerline is
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# outside the lower slice boundary, thus no overhang
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}
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# remove bridged areas
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$diff = diff(
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$diff,
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[ map @$_, @{$layerm->bridged} ],
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1,
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);
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if ($self->object_config->dont_support_bridges) {
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if (1) {
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# remove the entire bridges and only support the unsupported edges
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my @bridges = map $_->expolygon,
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grep $_->bridge_angle != -1,
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@{$layerm->fill_surfaces->filter_by_type(S_TYPE_BOTTOMBRIDGE)};
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$diff = diff(
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$diff,
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[ map @$_, @bridges ],
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1,
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);
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push @$diff, @{intersection(
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[ map @{$_->grow(+scale MARGIN)}, @{$layerm->unsupported_bridge_edges} ],
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[ map @$_, @bridges ],
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)}
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} else {
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# just remove bridged areas
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$diff = diff(
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$diff,
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[ map @$_, @{$layerm->bridged} ],
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1,
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);
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}
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}
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next if !@$diff;
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push @overhang, @$diff; # NOTE: this is not the full overhang as it misses the outermost half of the perimeter width!
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@ -381,6 +381,8 @@ $j
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--support-material-enforce-layers
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Enforce support material on the specified number of layers from bottom,
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regardless of --support-material and threshold (0+, default: $config->{support_material_enforce_layers})
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--dont-support-bridges
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Experimental option for preventing support material from being generated under bridged areas (default: yes)
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Retraction options:
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--retract-length Length of retraction in mm when pausing extrusion (default: $config->{retract_length}[0])
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@ -139,6 +139,11 @@ class PrintConfigDef
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Options["disable_fan_first_layers"].cli = "disable-fan-first-layers=i";
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Options["disable_fan_first_layers"].max = 1000;
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Options["dont_support_bridges"].type = coBool;
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Options["dont_support_bridges"].label = "Don't support bridges";
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Options["dont_support_bridges"].tooltip = "Experimental option for preventing support material from being generated under bridged areas.";
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Options["dont_support_bridges"].cli = "dont-support-bridges!";
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Options["duplicate_distance"].type = coFloat;
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Options["duplicate_distance"].label = "Distance between copies";
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Options["duplicate_distance"].tooltip = "Distance used for the auto-arrange feature of the plater.";
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@ -968,6 +973,7 @@ class StaticPrintConfig : public virtual StaticConfig
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class PrintObjectConfig : public virtual StaticPrintConfig
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{
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public:
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ConfigOptionBool dont_support_bridges;
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ConfigOptionFloatOrPercent extrusion_width;
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ConfigOptionFloatOrPercent first_layer_height;
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ConfigOptionBool infill_only_where_needed;
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@ -988,6 +994,7 @@ class PrintObjectConfig : public virtual StaticPrintConfig
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ConfigOptionInt support_material_threshold;
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PrintObjectConfig() : StaticPrintConfig() {
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this->dont_support_bridges.value = true;
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this->extrusion_width.value = 0;
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this->extrusion_width.percent = false;
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this->first_layer_height.value = 0.35;
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@ -1012,6 +1019,7 @@ class PrintObjectConfig : public virtual StaticPrintConfig
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};
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ConfigOption* option(const t_config_option_key opt_key, bool create = false) {
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if (opt_key == "dont_support_bridges") return &this->dont_support_bridges;
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if (opt_key == "extrusion_width") return &this->extrusion_width;
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if (opt_key == "first_layer_height") return &this->first_layer_height;
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if (opt_key == "infill_only_where_needed") return &this->infill_only_where_needed;
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