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New feature: bridge density (#275)

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Signed-off-by: SoftFever <softfeverever@gmail.com>
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SoftFever 2023-02-02 00:43:36 +08:00 • committed by GitHub
parent 8244693b55
commit fe9a2715e6
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11 changed files with 32 additions and 13 deletions
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16
src/libslic3r/LayerRegion.cpp
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@ -12,6 +12,7 @@
#include <map>
#include <boost/log/trivial.hpp>
#include <boost/algorithm/clamp.hpp>
namespace Slic3r {
@ -25,22 +26,27 @@ Flow LayerRegion::flow(FlowRole role, double layer_height) const
return m_region->flow(*m_layer->object(), role, layer_height, m_layer->id() == 0);
}
Flow LayerRegion::bridging_flow(FlowRole role, bool thick_bridge) const
Flow LayerRegion::bridging_flow(FlowRole role, bool thick_bridge, float bridge_density) const
{
const PrintRegion &region = this->region();
const PrintRegionConfig &region_config = region.config();
const PrintObject &print_object = *this->layer()->object();
Flow bridge_flow;
auto nozzle_diameter = float(print_object.print()->config().nozzle_diameter.get_at(region.extruder(role) - 1));
if (thick_bridge) {
// The old Slic3r way (different from all other slicers): Use rounded extrusions.
// Get the configured nozzle_diameter for the extruder associated to the flow role requested.
// Here this->extruder(role) - 1 may underflow to MAX_INT, but then the get_at() will follback to zero'th element, so everything is all right.
auto nozzle_diameter = float(print_object.print()->config().nozzle_diameter.get_at(region.extruder(role) - 1));
// Applies default bridge spacing.
return Flow::bridging_flow(float(sqrt(region_config.bridge_flow)) * nozzle_diameter, nozzle_diameter);
bridge_flow = Flow::bridging_flow(float(sqrt(region_config.bridge_flow)) * nozzle_diameter, nozzle_diameter);
} else {
// The same way as other slicers: Use normal extrusions. Apply bridge_flow while maintaining the original spacing.
return this->flow(role).with_flow_ratio(region_config.bridge_flow);
bridge_flow = this->flow(role).with_flow_ratio(region_config.bridge_flow);
}
bridge_density = boost::algorithm::clamp(bridge_density, 0.1f, 1.0f);
bridge_flow.set_spacing(bridge_flow.spacing() + bridge_flow.width() * ((1.0f / bridge_density) - 1.0f));
return bridge_flow;
}
// Fill in layerm->fill_surfaces by trimming the layerm->slices by the cummulative layerm->fill_surfaces.
@ -230,7 +236,7 @@ void LayerRegion::process_external_surfaces(const Layer *lower_layer, const Poly
// Grown by 3mm.
//BBS: eliminate too narrow area to avoid generating bridge on top layer when wall loop is 1
//Polygons polys = offset(bridges[i].expolygon, bridge_margin, EXTERNAL_SURFACES_OFFSET_PARAMETERS);
Polygons polys = offset2({ bridges[i].expolygon }, -scale_(nozzle_diameter * 0.1), bridge_margin, EXTERNAL_SURFACES_OFFSET_PARAMETERS);
Polygons polys = offset2({ bridges[i].expolygon }, -scale_(nozzle_diameter * 0.1), bridge_margin + scale_((1.0 / this->region().config().bridge_density.get_abs_value(1.0) - 1.0)*nozzle_diameter/2.0), EXTERNAL_SURFACES_OFFSET_PARAMETERS);
if (idx_island == -1) {
BOOST_LOG_TRIVIAL(trace) << "Bridge did not fall into the source region!";
} else {