mirror of https://github.com/vitalif/Slic3r
Incomplete work to improve support material by avoiding thin columns and making sure everything is supported correctly
Alessandro Ranellucci
parent
abb5d1256f
commit
5380b6cb33
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@ -917,7 +917,7 @@ sub generate_support_material {
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if (0) {
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require "Slic3r/SVG.pm";
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Slic3r::SVG::output("contact_" . $layer->print_z . ".svg",
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Slic3r::SVG::output("contact_" . $contact_z . ".svg",
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expolygons => union_ex(\@contact),
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red_expolygons => \@overhang,
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);
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@ -971,7 +971,7 @@ sub generate_support_material {
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my $z = $support_layers[$layer_id];
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my $this = $contact{$z} // next;
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# count contact layer as interface layer
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for (my $i = $layer_id; $i >= 0 && $i > $layer_id-$interface_layers; $i--) {
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for (my $i = $layer_id-1; $i >= 0 && $i > $layer_id-$interface_layers; $i--) {
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$z = $support_layers[$i];
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# Compute interface area on this layer as diff of upper contact area
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# (or upper interface area) and layer slices.
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@ -985,6 +985,7 @@ sub generate_support_material {
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],
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[
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@{ $top{$z} || [] },
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@{ $contact{$z} || [] },
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],
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1,
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);
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@ -1003,6 +1004,7 @@ sub generate_support_material {
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[
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@{ $top{$z} || [] },
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@{ $interface{$i} || [] },
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@{ $contact{$z} || [] },
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],
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1,
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);
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@ -1043,11 +1045,20 @@ sub generate_support_material {
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my ($layer_id) = @_;
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my $result = { contact => [], interface => [], support => [] };
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if (0) {
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require "Slic3r/SVG.pm";
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Slic3r::SVG::output("layer_" . $support_layers[$layer_id] . ".svg",
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red_expolygons => union_ex($contact{$support_layers[$layer_id]} || []),
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green_expolygons => union_ex($interface{$layer_id} || []),
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);
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}
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$contact{$layer_id} ||= [];
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$interface{$layer_id} ||= [];
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$support{$layer_id} ||= [];
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# contact
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my $contact_infill = [];
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if ((my $contact = $contact{$support_layers[$layer_id]}) && $contact_loops > 0) {
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my $overhang = $overhang{$support_layers[$layer_id]};
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$contact = [ grep $_->is_counter_clockwise, @$contact ];
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@ -1080,11 +1091,8 @@ sub generate_support_material {
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[ map Slic3r::Polygon->new(@$_)->split_at_first_point, @loops ],
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) };
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# subtract loops from the contact area to detect the remaining part
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$interface{$layer_id} = intersection(
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$interface{$layer_id},
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[ offset2(\@loops0, -($contact_loops) * $flow->scaled_spacing, +0.5*$flow->scaled_spacing) ],
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);
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# add the contact infill area to the interface area
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$contact_infill = [ offset2(\@loops0, -($contact_loops) * $flow->scaled_spacing, +0.5*$flow->scaled_spacing) ];
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# transform loops into ExtrusionPath objects
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@loops = map Slic3r::ExtrusionPath->pack(
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@ -1096,13 +1104,40 @@ sub generate_support_material {
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$result->{contact} = [ @loops ];
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}
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# interface
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if (@{$interface{$layer_id}}) {
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# draw a perimeter around interface and support
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{
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# TODO: use brim ordering algorithm
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my $contour = union([ map @$_, $interface{$layer_id}, $support{$layer_id} ], undef, 1);
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push @{$result->{support}}, map Slic3r::ExtrusionPath->pack(
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polyline => $_->split_at_first_point,
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role => EXTR_ROLE_SUPPORTMATERIAL,
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height => undef,
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flow_spacing => $flow->spacing,
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), map Slic3r::Polygon->new(@$_),
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offset2($contour, -$flow->scaled_spacing, +$flow->scaled_spacing*0.5);
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# subtract the perimeter area from both interface and support
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my $to_remove = diff(
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$contour,
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[ offset($contour, -$flow->scaled_spacing) ],
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);
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$interface{$layer_id} = diff(
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$interface{$layer_id},
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$to_remove,
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);
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$support{$layer_id} = diff(
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$support{$layer_id},
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$to_remove,
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);
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}
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# interface and contact infill
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if (@{$interface{$layer_id}} || @$contact_infill) {
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$fillers{interface}->angle($interface_angle);
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# steal some space from support
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$interface{$layer_id} = intersection(
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[ offset($interface{$layer_id}, scale 3) ],
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[ offset([ map @$_, $interface{$layer_id}, $contact_infill ], scale 3) ],
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[ @{$interface{$layer_id}}, @{$support{$layer_id}} ],
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);
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$support{$layer_id} = diff(
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@ -1111,7 +1146,7 @@ sub generate_support_material {
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);
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my @paths = ();
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foreach my $expolygon (offset_ex($interface{$layer_id}, -$flow->scaled_width/2)) {
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foreach my $expolygon (@{union_ex($interface{$layer_id})}) {
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my @p = $fillers{interface}->fill_surface(
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Slic3r::Surface->new(expolygon => $expolygon),
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density => $interface_density,
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@ -1138,7 +1173,7 @@ sub generate_support_material {
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my $flow_spacing = $flow->spacing;
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# TODO: use offset2_ex()
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my $to_infill = [ offset_ex(union($support{$layer_id}), -$flow->scaled_width/2) ];
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my $to_infill = union_ex($support{$layer_id}, undef, 1);
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my @paths = ();
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# base flange
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@ -1147,18 +1182,6 @@ sub generate_support_material {
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$filler->angle($Slic3r::Config->support_material_angle + 90);
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$density = 0.5;
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$flow_spacing = $self->print->first_layer_support_material_flow->spacing;
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} else {
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# draw a perimeter all around support infill
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# TODO: use brim ordering algorithm
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push @paths, map Slic3r::ExtrusionPath->pack(
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polyline => $_->split_at_first_point,
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role => EXTR_ROLE_SUPPORTMATERIAL,
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height => undef,
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flow_spacing => $flow->spacing,
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), map @$_, @$to_infill;
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# TODO: use offset2_ex()
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$to_infill = [ offset_ex([ map @$_, @$to_infill ], -$flow->scaled_spacing) ];
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}
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foreach my $expolygon (@$to_infill) {
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@ -1178,15 +1201,27 @@ sub generate_support_material {
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), @p;
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}
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$result->{support} = [ @paths ];
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push @{$result->{support}}, @paths;
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}
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# islands
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$result->{islands} = union_ex([
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@{$interface{$layer_id} || []},
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@{$support{$layer_id} || []},
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@{$contact{$support_layers[$layer_id]} || []},
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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("islands_" . $support_layers[$layer_id] . ".svg",
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red_expolygons => union_ex($contact{$support_layers[$layer_id]} || []),
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green_expolygons => union_ex($interface{$layer_id} || []),
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red_polylines => [ map $_->unpack->polyline, @{$result->{contact}} ],
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green_polylines => [ map $_->unpack->polyline, @{$result->{interface}} ],
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polylines => [ map $_->unpack->polyline, @{$result->{support}} ],
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);
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}
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return $result;
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};
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@ -57,7 +57,7 @@ sub output {
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}
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}
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foreach my $type (qw(polygons polylines white_polygons green_polygons red_polygons red_polylines)) {
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foreach my $type (qw(polygons polylines white_polygons green_polygons red_polygons red_polylines green_polylines)) {
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if ($things{$type}) {
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my $method = $type =~ /polygons/ ? 'polygon' : 'polyline';
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my ($colour) = $type =~ /^(red|green)_/;
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