428 lines
18 KiB
C++
428 lines
18 KiB
C++
#include "Layer.hpp"
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#include "ClipperUtils.hpp"
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#include "Print.hpp"
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#include "Fill/Fill.hpp"
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#include "ShortestPath.hpp"
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#include "SVG.hpp"
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#include "BoundingBox.hpp"
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#include <boost/log/trivial.hpp>
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namespace Slic3r {
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Layer::~Layer()
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{
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this->lower_layer = this->upper_layer = nullptr;
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for (LayerRegion *region : m_regions)
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delete region;
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m_regions.clear();
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}
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// Test whether whether there are any slices assigned to this layer.
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bool Layer::empty() const
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{
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for (const LayerRegion *layerm : m_regions)
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if (layerm != nullptr && ! layerm->slices.empty())
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// Non empty layer.
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return false;
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return true;
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}
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LayerRegion* Layer::add_region(const PrintRegion *print_region)
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{
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m_regions.emplace_back(new LayerRegion(this, print_region));
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return m_regions.back();
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}
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// merge all regions' slices to get islands
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void Layer::make_slices()
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{
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ExPolygons slices;
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if (m_regions.size() == 1) {
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// optimization: if we only have one region, take its slices
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slices = to_expolygons(m_regions.front()->slices.surfaces);
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} else {
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Polygons slices_p;
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for (LayerRegion *layerm : m_regions)
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polygons_append(slices_p, to_polygons(layerm->slices.surfaces));
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slices = union_safety_offset_ex(slices_p);
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}
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this->lslices.clear();
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this->lslices.reserve(slices.size());
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// prepare ordering points
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Points ordering_points;
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ordering_points.reserve(slices.size());
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for (const ExPolygon &ex : slices)
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ordering_points.push_back(ex.contour.first_point());
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// sort slices
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std::vector<Points::size_type> order = chain_points(ordering_points);
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// populate slices vector
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for (size_t i : order)
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this->lslices.emplace_back(std::move(slices[i]));
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}
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static inline bool layer_needs_raw_backup(const Layer *layer)
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{
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// BBS: backup raw slice for generating support
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//return ! (layer->regions().size() == 1 && (layer->id() > 0 || layer->object()->config().elefant_foot_compensation.value == 0));
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return true;
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}
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void Layer::backup_untyped_slices()
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{
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if (layer_needs_raw_backup(this)) {
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for (LayerRegion *layerm : m_regions)
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layerm->raw_slices = to_expolygons(layerm->slices.surfaces);
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} else {
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assert(m_regions.size() == 1);
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m_regions.front()->raw_slices.clear();
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}
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}
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void Layer::restore_untyped_slices()
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{
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if (layer_needs_raw_backup(this)) {
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for (LayerRegion *layerm : m_regions)
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layerm->slices.set(layerm->raw_slices, stInternal);
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} else {
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assert(m_regions.size() == 1);
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m_regions.front()->slices.set(this->lslices, stInternal);
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}
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}
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// Similar to Layer::restore_untyped_slices()
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// To improve robustness of detect_surfaces_type() when reslicing (working with typed slices), see GH issue #7442.
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// Only resetting layerm->slices if Slice::extra_perimeters is always zero or it will not be used anymore
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// after the perimeter generator.
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void Layer::restore_untyped_slices_no_extra_perimeters()
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{
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if (layer_needs_raw_backup(this)) {
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for (LayerRegion *layerm : m_regions)
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//BBS: remove extra_perimeters. Always false
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//if (! layerm->region().config().extra_perimeters.value)
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layerm->slices.set(layerm->raw_slices, stInternal);
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} else {
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assert(m_regions.size() == 1);
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LayerRegion *layerm = m_regions.front();
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// This optimization is correct, as extra_perimeters are only reused by prepare_infill() with multi-regions.
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//if (! layerm->region().config().extra_perimeters.value)
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layerm->slices.set(this->lslices, stInternal);
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}
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}
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ExPolygons Layer::merged(float offset_scaled) const
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{
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assert(offset_scaled >= 0.f);
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// If no offset is set, apply EPSILON offset before union, and revert it afterwards.
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float offset_scaled2 = 0;
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if (offset_scaled == 0.f) {
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offset_scaled = float( EPSILON);
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offset_scaled2 = float(- EPSILON);
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}
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Polygons polygons;
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for (LayerRegion *layerm : m_regions) {
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const PrintRegionConfig &config = layerm->region().config();
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// Our users learned to bend Slic3r to produce empty volumes to act as subtracters. Only add the region if it is non-empty.
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if (config.bottom_shell_layers > 0 || config.top_shell_layers > 0 || config.sparse_infill_density > 0. || config.wall_loops > 0)
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append(polygons, offset(layerm->slices.surfaces, offset_scaled));
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}
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ExPolygons out = union_ex(polygons);
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if (offset_scaled2 != 0.f)
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out = offset_ex(out, offset_scaled2);
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return out;
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}
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// Here the perimeters are created cummulatively for all layer regions sharing the same parameters influencing the perimeters.
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// The perimeter paths and the thin fills (ExtrusionEntityCollection) are assigned to the first compatible layer region.
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// The resulting fill surface is split back among the originating regions.
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void Layer::make_perimeters()
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{
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BOOST_LOG_TRIVIAL(trace) << "Generating perimeters for layer " << this->id();
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// keep track of regions whose perimeters we have already generated
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std::vector<unsigned char> done(m_regions.size(), false);
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for (LayerRegionPtrs::iterator layerm = m_regions.begin(); layerm != m_regions.end(); ++ layerm)
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if ((*layerm)->slices.empty()) {
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(*layerm)->perimeters.clear();
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(*layerm)->fills.clear();
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(*layerm)->thin_fills.clear();
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} else {
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size_t region_id = layerm - m_regions.begin();
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if (done[region_id])
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continue;
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BOOST_LOG_TRIVIAL(trace) << "Generating perimeters for layer " << this->id() << ", region " << region_id;
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done[region_id] = true;
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const PrintRegionConfig &config = (*layerm)->region().config();
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// find compatible regions
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LayerRegionPtrs layerms;
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layerms.push_back(*layerm);
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for (LayerRegionPtrs::const_iterator it = layerm + 1; it != m_regions.end(); ++it)
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if (! (*it)->slices.empty()) {
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LayerRegion* other_layerm = *it;
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const PrintRegionConfig &other_config = other_layerm->region().config();
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if (config.wall_filament == other_config.wall_filament
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&& config.wall_loops == other_config.wall_loops
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&& config.inner_wall_speed == other_config.inner_wall_speed
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&& config.outer_wall_speed == other_config.outer_wall_speed
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&& config.gap_infill_speed.value == other_config.gap_infill_speed.value
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&& config.detect_overhang_wall == other_config.detect_overhang_wall
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&& config.filter_out_gap_fill.value == other_config.filter_out_gap_fill.value
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&& config.opt_serialize("inner_wall_line_width") == other_config.opt_serialize("inner_wall_line_width")
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&& config.detect_thin_wall == other_config.detect_thin_wall
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&& config.infill_wall_overlap == other_config.infill_wall_overlap
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&& config.fuzzy_skin == other_config.fuzzy_skin
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&& config.fuzzy_skin_thickness == other_config.fuzzy_skin_thickness
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&& config.fuzzy_skin_point_distance == other_config.fuzzy_skin_point_distance
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&& config.seam_slope_type == other_config.seam_slope_type
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&& config.seam_slope_conditional == other_config.seam_slope_conditional
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&& config.scarf_angle_threshold == other_config.scarf_angle_threshold
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&& config.seam_slope_start_height == other_config.seam_slope_start_height
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&& config.seam_slope_entire_loop == other_config.seam_slope_entire_loop
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&& config.seam_slope_min_length == other_config.seam_slope_min_length
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&& config.seam_slope_steps == other_config.seam_slope_steps
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&& config.seam_slope_inner_walls == other_config.seam_slope_inner_walls)
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{
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other_layerm->perimeters.clear();
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other_layerm->fills.clear();
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other_layerm->thin_fills.clear();
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layerms.push_back(other_layerm);
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done[it - m_regions.begin()] = true;
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}
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}
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if (layerms.size() == 1) { // optimization
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(*layerm)->fill_surfaces.surfaces.clear();
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(*layerm)->make_perimeters((*layerm)->slices, &(*layerm)->fill_surfaces, &(*layerm)->fill_no_overlap_expolygons);
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(*layerm)->fill_expolygons = to_expolygons((*layerm)->fill_surfaces.surfaces);
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} else {
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SurfaceCollection new_slices;
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// Use the region with highest infill rate, as the make_perimeters() function below decides on the gap fill based on the infill existence.
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LayerRegion *layerm_config = layerms.front();
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{
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// group slices (surfaces) according to number of extra perimeters
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std::map<unsigned short, Surfaces> slices; // extra_perimeters => [ surface, surface... ]
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for (LayerRegion *layerm : layerms) {
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for (const Surface &surface : layerm->slices.surfaces)
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slices[surface.extra_perimeters].emplace_back(surface);
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if (layerm->region().config().sparse_infill_density > layerm_config->region().config().sparse_infill_density)
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layerm_config = layerm;
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}
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// merge the surfaces assigned to each group
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for (std::pair<const unsigned short,Surfaces> &surfaces_with_extra_perimeters : slices)
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new_slices.append(offset_ex(surfaces_with_extra_perimeters.second, ClipperSafetyOffset), surfaces_with_extra_perimeters.second.front());
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}
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// make perimeters
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SurfaceCollection fill_surfaces;
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//BBS
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ExPolygons fill_no_overlap;
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layerm_config->make_perimeters(new_slices, &fill_surfaces, &fill_no_overlap);
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// assign fill_surfaces to each layer
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if (!fill_surfaces.surfaces.empty()) {
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for (LayerRegionPtrs::iterator l = layerms.begin(); l != layerms.end(); ++l) {
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// Separate the fill surfaces.
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ExPolygons expp = intersection_ex(fill_surfaces.surfaces, (*l)->slices.surfaces);
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(*l)->fill_expolygons = expp;
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(*l)->fill_surfaces.set(std::move(expp), fill_surfaces.surfaces.front());
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//BBS: Separate fill_no_overlap
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(*l)->fill_no_overlap_expolygons = intersection_ex((*l)->slices.surfaces, fill_no_overlap);
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}
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}
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}
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}
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BOOST_LOG_TRIVIAL(trace) << "Generating perimeters for layer " << this->id() << " - Done";
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}
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void Layer::export_region_slices_to_svg(const char *path) const
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{
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BoundingBox bbox;
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for (const auto *region : m_regions)
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for (const auto &surface : region->slices.surfaces)
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bbox.merge(get_extents(surface.expolygon));
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Point legend_size = export_surface_type_legend_to_svg_box_size();
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Point legend_pos(bbox.min(0), bbox.max(1));
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bbox.merge(Point(std::max(bbox.min(0) + legend_size(0), bbox.max(0)), bbox.max(1) + legend_size(1)));
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SVG svg(path, bbox);
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const float transparency = 0.5f;
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for (const auto *region : m_regions)
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for (const auto &surface : region->slices.surfaces)
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svg.draw(surface.expolygon, surface_type_to_color_name(surface.surface_type), transparency);
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export_surface_type_legend_to_svg(svg, legend_pos);
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svg.Close();
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}
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// Export to "out/LayerRegion-name-%d.svg" with an increasing index with every export.
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void Layer::export_region_slices_to_svg_debug(const char *name) const
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{
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static size_t idx = 0;
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this->export_region_slices_to_svg(debug_out_path("Layer-slices-%s-%d.svg", name, idx ++).c_str());
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}
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void Layer::export_region_fill_surfaces_to_svg(const char *path) const
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{
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BoundingBox bbox;
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for (const auto *region : m_regions)
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for (const auto &surface : region->slices.surfaces)
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bbox.merge(get_extents(surface.expolygon));
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Point legend_size = export_surface_type_legend_to_svg_box_size();
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Point legend_pos(bbox.min(0), bbox.max(1));
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bbox.merge(Point(std::max(bbox.min(0) + legend_size(0), bbox.max(0)), bbox.max(1) + legend_size(1)));
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SVG svg(path, bbox);
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const float transparency = 0.5f;
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for (const auto *region : m_regions)
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for (const auto &surface : region->slices.surfaces)
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svg.draw(surface.expolygon, surface_type_to_color_name(surface.surface_type), transparency);
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export_surface_type_legend_to_svg(svg, legend_pos);
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svg.Close();
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}
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//BBS: method to simplify support path
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void Layer::simplify_support_entity_collection(ExtrusionEntityCollection* entity_collection)
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{
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for (size_t i = 0; i < entity_collection->entities.size(); i++) {
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if (ExtrusionEntityCollection* collection = dynamic_cast<ExtrusionEntityCollection*>(entity_collection->entities[i]))
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this->simplify_support_entity_collection(collection);
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else if (ExtrusionPath* path = dynamic_cast<ExtrusionPath*>(entity_collection->entities[i]))
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this->simplify_support_path(path);
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else if (ExtrusionMultiPath* multipath = dynamic_cast<ExtrusionMultiPath*>(entity_collection->entities[i]))
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this->simplify_support_multi_path(multipath);
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else if (ExtrusionLoop* loop = dynamic_cast<ExtrusionLoop*>(entity_collection->entities[i]))
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this->simplify_support_loop(loop);
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else
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throw Slic3r::InvalidArgument("Invalid extrusion entity supplied to simplify_support_entity_collection()");
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}
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}
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//BBS: method to simplify support path
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void Layer::simplify_support_path(ExtrusionPath * path)
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{
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const auto print_config = this->object()->print()->config();
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const bool spiral_mode = print_config.spiral_mode;
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const bool enable_arc_fitting = print_config.enable_arc_fitting;
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const auto scaled_resolution = scaled<double>(print_config.resolution.value);
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if (enable_arc_fitting &&
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!spiral_mode) {
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path->simplify_by_fitting_arc(SCALED_SUPPORT_RESOLUTION);
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} else {
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path->simplify(scaled_resolution);
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}
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}
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//BBS: method to simplify support path
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void Layer::simplify_support_multi_path(ExtrusionMultiPath* multipath)
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{
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const auto print_config = this->object()->print()->config();
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const bool spiral_mode = print_config.spiral_mode;
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const bool enable_arc_fitting = print_config.enable_arc_fitting;
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const auto scaled_resolution = scaled<double>(print_config.resolution.value);
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for (size_t i = 0; i < multipath->paths.size(); ++i) {
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if (enable_arc_fitting &&
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!spiral_mode) {
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multipath->paths[i].simplify_by_fitting_arc(SCALED_SUPPORT_RESOLUTION);
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} else {
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multipath->paths[i].simplify(scaled_resolution);
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}
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}
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}
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//BBS: method to simplify support path
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void Layer::simplify_support_loop(ExtrusionLoop* loop)
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{
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const auto print_config = this->object()->print()->config();
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const bool spiral_mode = print_config.spiral_mode;
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const bool enable_arc_fitting = print_config.enable_arc_fitting;
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const auto scaled_resolution = scaled<double>(print_config.resolution.value);
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for (size_t i = 0; i < loop->paths.size(); ++i) {
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if (enable_arc_fitting &&
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!spiral_mode) {
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loop->paths[i].simplify_by_fitting_arc(SCALED_SUPPORT_RESOLUTION);
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} else {
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loop->paths[i].simplify(scaled_resolution);
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}
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}
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}
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// Export to "out/LayerRegion-name-%d.svg" with an increasing index with every export.
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void Layer::export_region_fill_surfaces_to_svg_debug(const char *name) const
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{
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static size_t idx = 0;
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this->export_region_fill_surfaces_to_svg(debug_out_path("Layer-fill_surfaces-%s-%d.svg", name, idx ++).c_str());
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}
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coordf_t Layer::get_sparse_infill_max_void_area()
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{
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double max_void_area = 0.;
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for (auto layerm : m_regions) {
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Flow flow = layerm->flow(frInfill);
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float density = layerm->region().config().sparse_infill_density;
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InfillPattern pattern = layerm->region().config().sparse_infill_pattern;
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if (density == 0.)
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return -1;
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//BBS: rough estimation and need to be optimized
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double spacing = flow.scaled_spacing() * (100 - density) / density;
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switch (pattern) {
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case ipConcentric:
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case ipRectilinear:
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case ipLine:
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case ipGyroid:
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case ipAlignedRectilinear:
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case ipOctagramSpiral:
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case ipHilbertCurve:
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case ip3DHoneycomb:
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case ipArchimedeanChords:
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max_void_area = std::max(max_void_area, spacing * spacing);
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break;
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case ipGrid:
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case ipHoneycomb:
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case ipLightning:
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max_void_area = std::max(max_void_area, 4.0 * spacing * spacing);
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break;
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case ipCubic:
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case ipAdaptiveCubic:
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case ipTriangles:
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case ipStars:
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case ipSupportCubic:
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max_void_area = std::max(max_void_area, 4.5 * spacing * spacing);
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break;
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default:
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max_void_area = std::max(max_void_area, spacing * spacing);
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break;
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}
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};
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return max_void_area;
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}
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BoundingBox get_extents(const LayerRegion &layer_region)
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{
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BoundingBox bbox;
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if (!layer_region.slices.surfaces.empty()) {
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bbox = get_extents(layer_region.slices.surfaces.front());
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for (auto it = layer_region.slices.surfaces.cbegin() + 1; it != layer_region.slices.surfaces.cend(); ++it)
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bbox.merge(get_extents(*it));
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}
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return bbox;
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}
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BoundingBox get_extents(const LayerRegionPtrs &layer_regions)
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{
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BoundingBox bbox;
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if (!layer_regions.empty()) {
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bbox = get_extents(*layer_regions.front());
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for (auto it = layer_regions.begin() + 1; it != layer_regions.end(); ++it)
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bbox.merge(get_extents(**it));
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}
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return bbox;
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}
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}
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