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PrintObject.cpp
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///|/ Copyright (c) Prusa Research 2016 - 2023 Lukáš Hejl @hejllukas, Pavel Mikuš @Godrak, Lukáš Matěna @lukasmatena, Vojtěch Bubník @bubnikv, Enrico Turri @enricoturri1966, Oleksandra Iushchenko @YuSanka, David Kocík @kocikdav, Roman Beránek @zavorka
///|/ Copyright (c) 2021 Justin Schuh @jschuh
///|/ Copyright (c) 2021 Ilya @xorza
///|/ Copyright (c) 2016 Joseph Lenox @lordofhyphens
///|/ Copyright (c) Slic3r 2014 - 2016 Alessandro Ranellucci @alranel
///|/ Copyright (c) 2015 Maksim Derbasov @ntfshard
///|/
///|/ PrusaSlicer is released under the terms of the AGPLv3 or higher
///|/
#include <oneapi/tbb/blocked_range.h>
#include <oneapi/tbb/concurrent_vector.h>
#include <oneapi/tbb/parallel_for.h>
#include <boost/log/trivial.hpp>
#include <algorithm>
#include <cmath>
#include <functional>
#include <map>
#include <string>
#include <string_view>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include <array>
#include <initializer_list>
#include <memory>
#include <cassert>
#include <cfloat>
#include <chrono>
#include <cstdlib>
#include "AABBTreeLines.hpp"
#include "ExPolygon.hpp"
#include "Flow.hpp"
#include "libslic3r/GCode/ExtrusionProcessor.hpp"
#include "Line.hpp"
#include "Polygon.hpp"
#include "Polyline.hpp"
#include "Print.hpp"
#include "BoundingBox.hpp"
#include "Geometry.hpp"
#include "I18N.hpp"
#include "Layer.hpp"
#include "PrintBase.hpp"
#include "PrintConfig.hpp"
#include "Support/SupportMaterial.hpp"
#include "Support/TreeSupport.hpp"
#include "Surface.hpp"
#include "Slicing.hpp"
#include "SurfaceCollection.hpp"
#include "Tesselate.hpp"
#include "TriangleMeshSlicer.hpp"
#include "Utils.hpp"
#include "libslic3r/Fill/FillAdaptive.hpp"
#include "libslic3r/Fill/FillLightning.hpp"
#include "SupportSpotsGenerator.hpp"
#include "libslic3r.h"
#include "admesh/stl.h"
#include "libslic3r/ClipperUtils.hpp"
#include "libslic3r/Config.hpp"
#include "libslic3r/LayerRegion.hpp"
#include "libslic3r/Model.hpp"
#include "libslic3r/MultiMaterialSegmentation.hpp"
#include "libslic3r/TriangleSelector.hpp"
#include "tcbspan/span.hpp"
#include "libslic3r/Point.hpp"
using namespace std::literals;
// #define PRINT_OBJECT_TIMING
#ifdef PRINT_OBJECT_TIMING
// time limit for one ClipperLib operation (union / diff / offset), in ms
#define PRINT_OBJECT_TIME_LIMIT_DEFAULT 50
#include <boost/current_function.hpp>
#include "Timer.hpp"
#define PRINT_OBJECT_TIME_LIMIT_SECONDS(limit) Timing::TimeLimitAlarm time_limit_alarm(uint64_t(limit) * 1000000000l, BOOST_CURRENT_FUNCTION)
#define PRINT_OBJECT_TIME_LIMIT_MILLIS(limit) Timing::TimeLimitAlarm time_limit_alarm(uint64_t(limit) * 1000000l, BOOST_CURRENT_FUNCTION)
#else
#define PRINT_OBJECT_TIME_LIMIT_SECONDS(limit) do {} while(false)
#define PRINT_OBJECT_TIME_LIMIT_MILLIS(limit) do {} while(false)
#endif // PRINT_OBJECT_TIMING
#ifdef SLIC3R_DEBUG_SLICE_PROCESSING
#define SLIC3R_DEBUG
#endif
// #define SLIC3R_DEBUG
// Make assert active if SLIC3R_DEBUG
#ifdef SLIC3R_DEBUG
#undef NDEBUG
#define DEBUG
#define _DEBUG
#include "SVG.hpp"
#undef assert
#include <cassert>
#endif
namespace Slic3r {
// Constructor is called from the main thread, therefore all Model / ModelObject / ModelIntance data are valid.
PrintObject::PrintObject(Print* print, ModelObject* model_object, const Transform3d& trafo, PrintInstances&& instances) :
PrintObjectBaseWithState(print, model_object),
m_trafo(trafo)
{
// Compute centering offet to be applied to our meshes so that we work with smaller coordinates
// requiring less bits to represent Clipper coordinates.
// Snug bounding box of a rotated and scaled object by the 1st instantion, without the instance translation applied.
// All the instances share the transformation matrix with the exception of translation in XY and rotation by Z,
// therefore a bounding box from 1st instance of a ModelObject is good enough for calculating the object center,
// snug height and an approximate bounding box in XY.
BoundingBoxf3 bbox = model_object->raw_bounding_box();
Vec3d bbox_center = bbox.center();
// We may need to rotate the bbox / bbox_center from the original instance to the current instance.
double z_diff = Geometry::rotation_diff_z(model_object->instances.front()->get_matrix(), instances.front().model_instance->get_matrix());
if (std::abs(z_diff) > EPSILON) {
auto z_rot = Eigen::AngleAxisd(z_diff, Vec3d::UnitZ());
bbox = bbox.transformed(Transform3d(z_rot));
bbox_center = (z_rot * bbox_center).eval();
}
// Center of the transformed mesh (without translation).
m_center_offset = Point::new_scale(bbox_center.x(), bbox_center.y());
// Size of the transformed mesh. This bounding may not be snug in XY plane, but it is snug in Z.
m_size = (bbox.size() * (1. / SCALING_FACTOR)).cast<coord_t>();
m_size.z() = coord_t(model_object->max_z() * (1. / SCALING_FACTOR));
this->set_instances(std::move(instances));
}
PrintBase::ApplyStatus PrintObject::set_instances(PrintInstances &&instances)
{
for (PrintInstance &i : instances)
// Add the center offset, which will be subtracted from the mesh when slicing.
i.shift += m_center_offset;
// Invalidate and set copies.
PrintBase::ApplyStatus status = PrintBase::APPLY_STATUS_UNCHANGED;
bool equal_length = instances.size() == m_instances.size();
bool equal = equal_length && std::equal(instances.begin(), instances.end(), m_instances.begin(),
[](const PrintInstance& lhs, const PrintInstance& rhs) { return lhs.model_instance == rhs.model_instance && lhs.shift == rhs.shift; });
if (! equal) {
status = PrintBase::APPLY_STATUS_CHANGED;
if (m_print->invalidate_steps({ psSkirtBrim, psGCodeExport }) ||
(! equal_length && m_print->invalidate_step(psWipeTower)))
status = PrintBase::APPLY_STATUS_INVALIDATED;
m_instances = std::move(instances);
for (PrintInstance &i : m_instances)
i.print_object = this;
}
return status;
}
std::vector<std::reference_wrapper<const PrintRegion>> PrintObject::all_regions() const
{
std::vector<std::reference_wrapper<const PrintRegion>> out;
out.reserve(m_shared_regions->all_regions.size());
for (const std::unique_ptr<Slic3r::PrintRegion> ®ion : m_shared_regions->all_regions)
out.emplace_back(*region.get());
return out;
}
// 1) Merges typed region slices into stInternal type.
// 2) Increases an "extra perimeters" counter at region slices where needed.
// 3) Generates perimeters, gap fills and fill regions (fill regions of type stInternal).
void PrintObject::make_perimeters()
{
// prerequisites
this->slice();
if (! this->set_started(posPerimeters))
return;
m_print->set_status(20, _u8L("Generating perimeters"));
BOOST_LOG_TRIVIAL(info) << "Generating perimeters..." << log_memory_info();
// Revert the typed slices into untyped slices.
if (m_typed_slices) {
for (Layer *layer : m_layers) {
layer->clear_fills();
layer->restore_untyped_slices();
m_print->throw_if_canceled();
}
m_typed_slices = false;
}
// compare each layer to the one below, and mark those slices needing
// one additional inner perimeter, like the top of domed objects-
// this algorithm makes sure that at least one perimeter is overlapping
// but we don't generate any extra perimeter if fill density is zero, as they would be floating
// inside the object - infill_only_where_needed should be the method of choice for printing
// hollow objects
for (size_t region_id = 0; region_id < this->num_printing_regions(); ++ region_id) {
const PrintRegion ®ion = this->printing_region(region_id);
if (! region.config().extra_perimeters || region.config().perimeters == 0 || region.config().fill_density == 0 || this->layer_count() < 2)
continue;
BOOST_LOG_TRIVIAL(debug) << "Generating extra perimeters for region " << region_id << " in parallel - start";
tbb::parallel_for(
tbb::blocked_range<size_t>(0, m_layers.size() - 1),
[this, ®ion, region_id](const tbb::blocked_range<size_t>& range) {
PRINT_OBJECT_TIME_LIMIT_MILLIS(PRINT_OBJECT_TIME_LIMIT_DEFAULT);
for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++ layer_idx) {
m_print->throw_if_canceled();
LayerRegion &layerm = *m_layers[layer_idx]->get_region(region_id);
const LayerRegion &upper_layerm = *m_layers[layer_idx+1]->get_region(region_id);
const Polygons upper_layerm_polygons = to_polygons(upper_layerm.slices().surfaces);
// Filter upper layer polygons in intersection_ppl by their bounding boxes?
// my $upper_layerm_poly_bboxes= [ map $_->bounding_box, @{$upper_layerm_polygons} ];
const double total_loop_length = total_length(upper_layerm_polygons);
const coord_t perimeter_spacing = layerm.flow(frPerimeter).scaled_spacing();
const Flow ext_perimeter_flow = layerm.flow(frExternalPerimeter);
const coord_t ext_perimeter_width = ext_perimeter_flow.scaled_width();
const coord_t ext_perimeter_spacing = ext_perimeter_flow.scaled_spacing();
// slice is not const because slice.extra_perimeters is being incremented.
for (Surface &slice : layerm.m_slices.surfaces) {
for (;;) {
// compute the total thickness of perimeters
const coord_t perimeters_thickness = ext_perimeter_width/2 + ext_perimeter_spacing/2
+ (region.config().perimeters-1 + slice.extra_perimeters) * perimeter_spacing;
// define a critical area where we don't want the upper slice to fall into
// (it should either lay over our perimeters or outside this area)
const coord_t critical_area_depth = coord_t(perimeter_spacing * 1.5);
const Polygons critical_area = diff(
offset(slice.expolygon, float(- perimeters_thickness)),
offset(slice.expolygon, float(- perimeters_thickness - critical_area_depth))
);
// check whether a portion of the upper slices falls inside the critical area
const Polylines intersection = intersection_pl(to_polylines(upper_layerm_polygons), critical_area);
// only add an additional loop if at least 30% of the slice loop would benefit from it
if (total_length(intersection) <= total_loop_length*0.3)
break;
/*
if (0) {
require "Slic3r/SVG.pm";
Slic3r::SVG::output(
"extra.svg",
no_arrows => 1,
expolygons => union_ex($critical_area),
polylines => [ map $_->split_at_first_point, map $_->p, @{$upper_layerm->slices} ],
);
}
*/
++ slice.extra_perimeters;
}
#ifdef DEBUG
if (slice.extra_perimeters > 0)
printf(" adding %d more perimeter(s) at layer %zu\n", slice.extra_perimeters, layer_idx);
#endif
}
}
});
m_print->throw_if_canceled();
BOOST_LOG_TRIVIAL(debug) << "Generating extra perimeters for region " << region_id << " in parallel - end";
}
BOOST_LOG_TRIVIAL(debug) << "Generating perimeters in parallel - start";
tbb::parallel_for(
tbb::blocked_range<size_t>(0, m_layers.size()),
[this](const tbb::blocked_range<size_t>& range) {
PRINT_OBJECT_TIME_LIMIT_MILLIS(PRINT_OBJECT_TIME_LIMIT_DEFAULT);
for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++ layer_idx) {
m_print->throw_if_canceled();
m_layers[layer_idx]->make_perimeters();
}
}
);
m_print->throw_if_canceled();
BOOST_LOG_TRIVIAL(debug) << "Generating perimeters in parallel - end";
this->set_done(posPerimeters);
}
void PrintObject::prepare_infill()
{
if (! this->set_started(posPrepareInfill))
return;
m_print->set_status(30, _u8L("Preparing infill"));
if (m_typed_slices) {
// To improve robustness of detect_surfaces_type() when reslicing (working with typed slices), see GH issue #7442.
// The preceding step (perimeter generator) only modifies extra_perimeters and the extra perimeters are only used by discover_vertical_shells()
// with more than a single region. If this step does not use Surface::extra_perimeters or Surface::extra_perimeters is always zero, it is safe
// to reset to the untyped slices before re-runnning detect_surfaces_type().
for (Layer* layer : m_layers) {
layer->restore_untyped_slices_no_extra_perimeters();
m_print->throw_if_canceled();
}
}
// This will assign a type (top/bottom/internal) to $layerm->slices.
// Then the classifcation of $layerm->slices is transfered onto
// the $layerm->fill_surfaces by clipping $layerm->fill_surfaces
// by the cummulative area of the previous $layerm->fill_surfaces.
this->detect_surfaces_type();
m_print->throw_if_canceled();
// Decide what surfaces are to be filled.
// Here the stTop / stBottomBridge / stBottom infill is turned to just stInternal if zero top / bottom infill layers are configured.
// Also tiny stInternal surfaces are turned to stInternalSolid.
BOOST_LOG_TRIVIAL(info) << "Preparing fill surfaces..." << log_memory_info();
for (auto *layer : m_layers)
for (auto *region : layer->m_regions) {
region->prepare_fill_surfaces();
m_print->throw_if_canceled();
}
// Add solid fills to ensure the shell vertical thickness.
this->discover_vertical_shells();
m_print->throw_if_canceled();
// Debugging output.
#ifdef SLIC3R_DEBUG_SLICE_PROCESSING
for (size_t region_id = 0; region_id < this->num_printing_regions(); ++ region_id) {
for (const Layer *layer : m_layers) {
LayerRegion *layerm = layer->m_regions[region_id];
layerm->export_region_slices_to_svg_debug("3_discover_vertical_shells-final");
layerm->export_region_fill_surfaces_to_svg_debug("3_discover_vertical_shells-final");
} // for each layer
} // for each region
#endif /* SLIC3R_DEBUG_SLICE_PROCESSING */
// this will detect bridges and reverse bridges
// and rearrange top/bottom/internal surfaces
// It produces enlarged overlapping bridging areas.
//
// 1) stBottomBridge / stBottom infill is grown by 3mm and clipped by the total infill area. Bridges are detected. The areas may overlap.
// 2) stTop is grown by 3mm and clipped by the grown bottom areas. The areas may overlap.
// 3) Clip the internal surfaces by the grown top/bottom surfaces.
// 4) Merge surfaces with the same style. This will mostly get rid of the overlaps.
//FIXME This does not likely merge surfaces, which are supported by a material with different colors, but same properties.
this->process_external_surfaces();
m_print->throw_if_canceled();
// Debugging output.
#ifdef SLIC3R_DEBUG_SLICE_PROCESSING
for (size_t region_id = 0; region_id < this->num_printing_regions(); ++ region_id) {
for (const Layer *layer : m_layers) {
LayerRegion *layerm = layer->m_regions[region_id];
layerm->export_region_slices_to_svg_debug("3_process_external_surfaces-final");
layerm->export_region_fill_surfaces_to_svg_debug("3_process_external_surfaces-final");
} // for each layer
} // for each region
#endif /* SLIC3R_DEBUG_SLICE_PROCESSING */
// Detect, which fill surfaces are near external layers.
// They will be split in internal and internal-solid surfaces.
// The purpose is to add a configurable number of solid layers to support the TOP surfaces
// and to add a configurable number of solid layers above the BOTTOM / BOTTOMBRIDGE surfaces
// to close these surfaces reliably.
//FIXME Vojtech: Is this a good place to add supporting infills below sloping perimeters?
this->discover_horizontal_shells();
m_print->throw_if_canceled();
#ifdef SLIC3R_DEBUG_SLICE_PROCESSING
for (size_t region_id = 0; region_id < this->num_printing_regions(); ++ region_id) {
for (const Layer *layer : m_layers) {
LayerRegion *layerm = layer->m_regions[region_id];
layerm->export_region_slices_to_svg_debug("7_discover_horizontal_shells-final");
layerm->export_region_fill_surfaces_to_svg_debug("7_discover_horizontal_shells-final");
} // for each layer
} // for each region
#endif /* SLIC3R_DEBUG_SLICE_PROCESSING */
// Only active if config->infill_only_where_needed. This step trims the sparse infill,
// so it acts as an internal support. It maintains all other infill types intact.
// Here the internal surfaces and perimeters have to be supported by the sparse infill.
//FIXME The surfaces are supported by a sparse infill, but the sparse infill is only as large as the area to support.
// Likely the sparse infill will not be anchored correctly, so it will not work as intended.
// Also one wishes the perimeters to be supported by a full infill.
// this->clip_fill_surfaces();
// m_print->throw_if_canceled();
#ifdef SLIC3R_DEBUG_SLICE_PROCESSING
for (size_t region_id = 0; region_id < this->num_printing_regions(); ++ region_id) {
for (const Layer *layer : m_layers) {
LayerRegion *layerm = layer->m_regions[region_id];
layerm->export_region_slices_to_svg_debug("8_clip_surfaces-final");
layerm->export_region_fill_surfaces_to_svg_debug("8_clip_surfaces-final");
} // for each layer
} // for each region
#endif /* SLIC3R_DEBUG_SLICE_PROCESSING */
// the following step needs to be done before combination because it may need
// to remove only half of the combined infill
this->bridge_over_infill();
m_print->throw_if_canceled();
// combine fill surfaces to honor the "infill every N layers" option
this->combine_infill();
m_print->throw_if_canceled();
#ifdef SLIC3R_DEBUG_SLICE_PROCESSING
for (size_t region_id = 0; region_id < this->num_printing_regions(); ++ region_id) {
for (const Layer *layer : m_layers) {
LayerRegion *layerm = layer->m_regions[region_id];
layerm->export_region_slices_to_svg_debug("9_prepare_infill-final");
layerm->export_region_fill_surfaces_to_svg_debug("9_prepare_infill-final");
} // for each layer
} // for each region
for (const Layer *layer : m_layers) {
layer->export_region_slices_to_svg_debug("9_prepare_infill-final");
layer->export_region_fill_surfaces_to_svg_debug("9_prepare_infill-final");
} // for each layer
#endif /* SLIC3R_DEBUG_SLICE_PROCESSING */
this->set_done(posPrepareInfill);
}
void PrintObject::clear_fills()
{
for (Layer *layer : m_layers)
layer->clear_fills();
}
void PrintObject::infill()
{
// prerequisites
this->prepare_infill();
if (this->set_started(posInfill)) {
// TRN Status for the Print calculation
m_print->set_status(45, _u8L("Making infill"));
const auto& adaptive_fill_octree = this->m_adaptive_fill_octrees.first;
const auto& support_fill_octree = this->m_adaptive_fill_octrees.second;
BOOST_LOG_TRIVIAL(debug) << "Filling layers in parallel - start";
tbb::parallel_for(
tbb::blocked_range<size_t>(0, m_layers.size()),
[this, &adaptive_fill_octree = adaptive_fill_octree, &support_fill_octree = support_fill_octree](const tbb::blocked_range<size_t>& range) {
PRINT_OBJECT_TIME_LIMIT_MILLIS(PRINT_OBJECT_TIME_LIMIT_DEFAULT);
for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++ layer_idx) {
m_print->throw_if_canceled();
m_layers[layer_idx]->make_fills(adaptive_fill_octree.get(), support_fill_octree.get(), this->m_lightning_generator.get());
}
}
);
m_print->throw_if_canceled();
BOOST_LOG_TRIVIAL(debug) << "Filling layers in parallel - end";
/* we could free memory now, but this would make this step not idempotent
### $_->fill_surfaces->clear for map @{$_->regions}, @{$object->layers};
*/
this->set_done(posInfill);
}
}
void PrintObject::ironing()
{
if (this->set_started(posIroning)) {
BOOST_LOG_TRIVIAL(debug) << "Ironing in parallel - start";
tbb::parallel_for(
// Ironing starting with layer 0 to support ironing all surfaces.
tbb::blocked_range<size_t>(0, m_layers.size()),
[this](const tbb::blocked_range<size_t>& range) {
PRINT_OBJECT_TIME_LIMIT_MILLIS(PRINT_OBJECT_TIME_LIMIT_DEFAULT);
for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++ layer_idx) {
m_print->throw_if_canceled();
m_layers[layer_idx]->make_ironing();
}
}
);
m_print->throw_if_canceled();
BOOST_LOG_TRIVIAL(debug) << "Ironing in parallel - end";
this->set_done(posIroning);
}
}
void PrintObject::generate_support_spots()
{
if (this->set_started(posSupportSpotsSearch)) {
BOOST_LOG_TRIVIAL(debug) << "Searching support spots - start";
m_print->set_status(65, _u8L("Searching support spots"));
if (!this->shared_regions()->generated_support_points.has_value()) {
PrintTryCancel cancel_func = m_print->make_try_cancel();
SupportSpotsGenerator::Params params{this->print()->m_config.filament_type.values,
float(this->print()->m_config.perimeter_acceleration.getFloat()),
this->config().raft_layers.getInt(), this->config().brim_type.value,
float(this->config().brim_width.getFloat())};
auto [supp_points, partial_objects] = SupportSpotsGenerator::full_search(this, cancel_func, params);
Transform3d po_transform = this->trafo_centered();
if (this->layer_count() > 0) {
po_transform = Geometry::translation_transform(Vec3d{0, 0, this->layers().front()->bottom_z()}) * po_transform;
}
this->m_shared_regions->generated_support_points = {po_transform, supp_points, partial_objects};
m_print->throw_if_canceled();
}
BOOST_LOG_TRIVIAL(debug) << "Searching support spots - end";
this->set_done(posSupportSpotsSearch);
}
}
void PrintObject::generate_support_material()
{
if (this->set_started(posSupportMaterial)) {
this->clear_support_layers();
if ((this->has_support() && m_layers.size() > 1) || (this->has_raft() && ! m_layers.empty())) {
m_print->set_status(70, _u8L("Generating support material"));
this->_generate_support_material();
m_print->throw_if_canceled();
} else {
#if 0
// Printing without supports. Empty layer means some objects or object parts are levitating,
// therefore they cannot be printed without supports.
for (const Layer *layer : m_layers)
if (layer->empty())
throw Slic3r::SlicingError("Levitating objects cannot be printed without supports.");
#endif
}
this->set_done(posSupportMaterial);
}
}
void PrintObject::estimate_curled_extrusions()
{
if (this->set_started(posEstimateCurledExtrusions)) {
if (this->print()->config().avoid_crossing_curled_overhangs ||
std::any_of(this->print()->m_print_regions.begin(), this->print()->m_print_regions.end(),
[](const PrintRegion *region) { return region->config().enable_dynamic_overhang_speeds.getBool(); })) {
BOOST_LOG_TRIVIAL(debug) << "Estimating areas with curled extrusions - start";
m_print->set_status(88, _u8L("Estimating curled extrusions"));
// Estimate curling of support material and add it to the malformaition lines of each layer
float support_flow_width = support_material_flow(this, this->config().layer_height).width();
SupportSpotsGenerator::Params params{this->print()->m_config.filament_type.values,
float(this->print()->m_config.perimeter_acceleration.getFloat()),
this->config().raft_layers.getInt(), this->config().brim_type.value,
float(this->config().brim_width.getFloat())};
SupportSpotsGenerator::estimate_supports_malformations(this->support_layers(), support_flow_width, params);
SupportSpotsGenerator::estimate_malformations(this->layers(), params);
m_print->throw_if_canceled();
BOOST_LOG_TRIVIAL(debug) << "Estimating areas with curled extrusions - end";
}
this->set_done(posEstimateCurledExtrusions);
}
}
void PrintObject::calculate_overhanging_perimeters()
{
if (this->set_started(posCalculateOverhangingPerimeters)) {
BOOST_LOG_TRIVIAL(debug) << "Calculating overhanging perimeters - start";
m_print->set_status(89, _u8L("Calculating overhanging perimeters"));
std::vector<unsigned int> extruders;
std::unordered_set<const PrintRegion *> regions_with_dynamic_speeds;
for (const PrintRegion *pr : this->print()->m_print_regions) {
if (pr->config().enable_dynamic_overhang_speeds.getBool()) {
regions_with_dynamic_speeds.insert(pr);
}
extruders.clear();
pr->collect_object_printing_extruders(*this->print(), extruders);
auto cfg = this->print()->config();
if (std::any_of(extruders.begin(), extruders.end(),
[&cfg](unsigned int extruder_id) { return cfg.enable_dynamic_fan_speeds.get_at(extruder_id); })) {
regions_with_dynamic_speeds.insert(pr);
}
}
if (!regions_with_dynamic_speeds.empty()) {
std::unordered_map<size_t, AABBTreeLines::LinesDistancer<CurledLine>> curled_lines;
std::unordered_map<size_t, AABBTreeLines::LinesDistancer<Linef>> unscaled_polygons_lines;
for (const Layer *l : this->layers()) {
curled_lines[l->id()] = AABBTreeLines::LinesDistancer<CurledLine>{l->curled_lines};
unscaled_polygons_lines[l->id()] = AABBTreeLines::LinesDistancer<Linef>{to_unscaled_linesf(l->lslices)};
}
curled_lines[size_t(-1)] = {};
unscaled_polygons_lines[size_t(-1)] = {};
tbb::parallel_for(tbb::blocked_range<size_t>(0, m_layers.size()), [this, &curled_lines, &unscaled_polygons_lines,
®ions_with_dynamic_speeds](
const tbb::blocked_range<size_t> &range) {
PRINT_OBJECT_TIME_LIMIT_MILLIS(PRINT_OBJECT_TIME_LIMIT_DEFAULT);
for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++layer_idx) {
auto l = m_layers[layer_idx];
if (l->id() == 0) { // first layer, do not split
continue;
}
for (LayerRegion *layer_region : l->regions()) {
if (regions_with_dynamic_speeds.find(layer_region->m_region) == regions_with_dynamic_speeds.end()) {
continue;
}
size_t prev_layer_id = l->lower_layer ? l->lower_layer->id() : size_t(-1);
layer_region->m_perimeters =
ExtrusionProcessor::calculate_and_split_overhanging_extrusions(&layer_region->m_perimeters,
unscaled_polygons_lines[prev_layer_id],
curled_lines[l->id()]);
}
}
});
m_print->throw_if_canceled();
BOOST_LOG_TRIVIAL(debug) << "Calculating overhanging perimeters - end";
}
this->set_done(posCalculateOverhangingPerimeters);
}
}
std::pair<FillAdaptive::OctreePtr, FillAdaptive::OctreePtr> PrintObject::prepare_adaptive_infill_data(
const std::vector<std::pair<const Surface *, float>> &surfaces_w_bottom_z) const
{
using namespace FillAdaptive;
auto [adaptive_line_spacing, support_line_spacing] = adaptive_fill_line_spacing(*this);
if ((adaptive_line_spacing == 0. && support_line_spacing == 0.) || this->layers().empty())
return std::make_pair(OctreePtr(), OctreePtr());
indexed_triangle_set mesh = this->model_object()->raw_indexed_triangle_set();
// Rotate mesh and build octree on it with axis-aligned (standart base) cubes.
auto to_octree = transform_to_octree().toRotationMatrix();
its_transform(mesh, to_octree * this->trafo_centered(), true);
// Triangulate internal bridging surfaces.
std::vector<std::vector<Vec3d>> overhangs(std::max(surfaces_w_bottom_z.size(), size_t(1)));
// ^ make sure vector is not empty, even with no briding surfaces we still want to build the adaptive trees later, some continue normally
tbb::parallel_for(tbb::blocked_range<int>(0, surfaces_w_bottom_z.size()),
[this, &to_octree, &overhangs, &surfaces_w_bottom_z](const tbb::blocked_range<int> &range) {
PRINT_OBJECT_TIME_LIMIT_MILLIS(PRINT_OBJECT_TIME_LIMIT_DEFAULT);
for (int surface_idx = range.begin(); surface_idx < range.end(); ++surface_idx) {
std::vector<Vec3d> &out = overhangs[surface_idx];
m_print->throw_if_canceled();
append(out, triangulate_expolygon_3d(surfaces_w_bottom_z[surface_idx].first->expolygon,
surfaces_w_bottom_z[surface_idx].second));
for (Vec3d &p : out)
p = (to_octree * p).eval();
}
});
// and gather them.
for (size_t i = 1; i < overhangs.size(); ++ i)
append(overhangs.front(), std::move(overhangs[i]));
return std::make_pair(
adaptive_line_spacing ? build_octree(mesh, overhangs.front(), adaptive_line_spacing, false) : OctreePtr(),
support_line_spacing ? build_octree(mesh, overhangs.front(), support_line_spacing, true) : OctreePtr());
}
FillLightning::GeneratorPtr PrintObject::prepare_lightning_infill_data()
{
bool has_lightning_infill = false;
coordf_t lightning_density = 0.;
size_t lightning_cnt = 0;
for (size_t region_id = 0; region_id < this->num_printing_regions(); ++region_id)
if (const PrintRegionConfig &config = this->printing_region(region_id).config(); config.fill_density > 0 && config.fill_pattern == ipLightning) {
has_lightning_infill = true;
lightning_density += config.fill_density;
++lightning_cnt;
}
if (has_lightning_infill)
lightning_density /= coordf_t(lightning_cnt);
return has_lightning_infill ? FillLightning::build_generator(std::as_const(*this), lightning_density, [this]() -> void { this->throw_if_canceled(); }) : FillLightning::GeneratorPtr();
}
void PrintObject::clear_layers()
{
for (Layer *l : m_layers)
delete l;
m_layers.clear();
}
Layer* PrintObject::add_layer(int id, coordf_t height, coordf_t print_z, coordf_t slice_z)
{
m_layers.emplace_back(new Layer(id, this, height, print_z, slice_z));
return m_layers.back();
}
void PrintObject::clear_support_layers()
{
for (Layer *l : m_support_layers)
delete l;
m_support_layers.clear();
}
SupportLayer* PrintObject::add_support_layer(int id, int interface_id, coordf_t height, coordf_t print_z)
{
m_support_layers.emplace_back(new SupportLayer(id, interface_id, this, height, print_z, -1));
return m_support_layers.back();
}
SupportLayerPtrs::iterator PrintObject::insert_support_layer(SupportLayerPtrs::iterator pos, size_t id, size_t interface_id, coordf_t height, coordf_t print_z, coordf_t slice_z)
{
return m_support_layers.insert(pos, new SupportLayer(id, interface_id, this, height, print_z, slice_z));
}
// Called by Print::apply().
// This method only accepts PrintObjectConfig and PrintRegionConfig option keys.
bool PrintObject::invalidate_state_by_config_options(
const ConfigOptionResolver &old_config, const ConfigOptionResolver &new_config, const std::vector<t_config_option_key> &opt_keys)
{
if (opt_keys.empty())
return false;
std::vector<PrintObjectStep> steps;
bool invalidated = false;
for (const t_config_option_key &opt_key : opt_keys) {
if ( opt_key == "brim_width"
|| opt_key == "brim_separation"
|| opt_key == "brim_type") {
steps.emplace_back(posSupportSpotsSearch);
// Brim is printed below supports, support invalidates brim and skirt.
steps.emplace_back(posSupportMaterial);
} else if (
opt_key == "perimeters"
|| opt_key == "extra_perimeters"
|| opt_key == "extra_perimeters_on_overhangs"
|| opt_key == "first_layer_extrusion_width"
|| opt_key == "perimeter_extrusion_width"
|| opt_key == "infill_overlap"
|| opt_key == "external_perimeters_first"
|| opt_key == "arc_fitting"
|| opt_key == "top_one_perimeter_type"
|| opt_key == "only_one_perimeter_first_layer") {
steps.emplace_back(posPerimeters);
} else if (
opt_key == "gap_fill_enabled"
|| opt_key == "gap_fill_speed") {
// Return true if gap-fill speed has changed from zero value to non-zero or from non-zero value to zero.
auto is_gap_fill_changed_state_due_to_speed = [&opt_key, &old_config, &new_config]() -> bool {
if (opt_key == "gap_fill_speed") {
const auto *old_gap_fill_speed = old_config.option<ConfigOptionFloat>(opt_key);
const auto *new_gap_fill_speed = new_config.option<ConfigOptionFloat>(opt_key);
assert(old_gap_fill_speed && new_gap_fill_speed);
return (old_gap_fill_speed->value > 0.f && new_gap_fill_speed->value == 0.f) ||
(old_gap_fill_speed->value == 0.f && new_gap_fill_speed->value > 0.f);
}
return false;
};
// Filtering of unprintable regions in multi-material segmentation depends on if gap-fill is enabled or not.
// So step posSlice is invalidated when gap-fill was enabled/disabled by option "gap_fill_enabled" or by
// changing "gap_fill_speed" to force recomputation of the multi-material segmentation.
if (this->is_mm_painted() && (opt_key == "gap_fill_enabled" || (opt_key == "gap_fill_speed" && is_gap_fill_changed_state_due_to_speed())))
steps.emplace_back(posSlice);
steps.emplace_back(posPerimeters);
} else if (
opt_key == "layer_height"
|| opt_key == "mmu_segmented_region_max_width"
|| opt_key == "mmu_segmented_region_interlocking_depth"
|| opt_key == "raft_layers"
|| opt_key == "raft_contact_distance"
|| opt_key == "slice_closing_radius"
|| opt_key == "slicing_mode") {
steps.emplace_back(posSlice);
} else if (
opt_key == "elefant_foot_compensation"
|| opt_key == "support_material_contact_distance"
|| opt_key == "xy_size_compensation") {
steps.emplace_back(posSlice);
} else if (opt_key == "support_material") {
steps.emplace_back(posSupportMaterial);
if (m_config.support_material_contact_distance == 0.) {
// Enabling / disabling supports while soluble support interface is enabled.
// This changes the bridging logic (bridging enabled without supports, disabled with supports).
// Reset everything.
// See GH #1482 for details.
steps.emplace_back(posSlice);
}
} else if (
opt_key == "support_material_auto"
|| opt_key == "support_material_angle"
|| opt_key == "support_material_buildplate_only"
|| opt_key == "support_material_enforce_layers"
|| opt_key == "support_material_extruder"
|| opt_key == "support_material_extrusion_width"
|| opt_key == "support_material_bottom_contact_distance"
|| opt_key == "support_material_interface_layers"
|| opt_key == "support_material_bottom_interface_layers"
|| opt_key == "support_material_interface_pattern"
|| opt_key == "support_material_interface_contact_loops"
|| opt_key == "support_material_interface_extruder"
|| opt_key == "support_material_interface_spacing"
|| opt_key == "support_material_pattern"
|| opt_key == "support_material_style"
|| opt_key == "support_material_xy_spacing"
|| opt_key == "support_material_spacing"
|| opt_key == "support_material_closing_radius"
|| opt_key == "support_material_synchronize_layers"
|| opt_key == "support_material_threshold"
|| opt_key == "support_material_with_sheath"
|| opt_key == "support_tree_angle"
|| opt_key == "support_tree_angle_slow"
|| opt_key == "support_tree_branch_diameter"
|| opt_key == "support_tree_branch_diameter_angle"
|| opt_key == "support_tree_branch_diameter_double_wall"
|| opt_key == "support_tree_top_rate"
|| opt_key == "support_tree_branch_distance"
|| opt_key == "support_tree_tip_diameter"
|| opt_key == "raft_expansion"
|| opt_key == "raft_first_layer_density"
|| opt_key == "raft_first_layer_expansion"
|| opt_key == "dont_support_bridges"
|| opt_key == "first_layer_extrusion_width") {
steps.emplace_back(posSupportMaterial);
} else if (opt_key == "bottom_solid_layers") {
steps.emplace_back(posPrepareInfill);
if (m_print->config().spiral_vase) {
// Changing the number of bottom layers when a spiral vase is enabled requires re-slicing the object again.
// Otherwise, holes in the bottom layers could be filled, as is reported in GH #5528.
steps.emplace_back(posSlice);
}
} else if (
opt_key == "interface_shells"
|| opt_key == "infill_only_where_needed"
|| opt_key == "infill_every_layers"
|| opt_key == "automatic_infill_combination"
|| opt_key == "automatic_infill_combination_max_layer_height"
|| opt_key == "solid_infill_every_layers"
|| opt_key == "ensure_vertical_shell_thickness"
|| opt_key == "bottom_solid_min_thickness"
|| opt_key == "top_solid_layers"
|| opt_key == "top_solid_min_thickness"
|| opt_key == "solid_infill_below_area"
|| opt_key == "infill_extruder"
|| opt_key == "solid_infill_extruder"
|| opt_key == "infill_extrusion_width"
|| opt_key == "bridge_angle") {
steps.emplace_back(posPrepareInfill);
} else if (
opt_key == "top_fill_pattern"
|| opt_key == "bottom_fill_pattern"
|| opt_key == "external_fill_link_max_length"
|| opt_key == "fill_angle"
|| opt_key == "infill_anchor"
|| opt_key == "infill_anchor_max"
|| opt_key == "top_infill_extrusion_width"
|| opt_key == "first_layer_extrusion_width") {
steps.emplace_back(posInfill);
} else if (opt_key == "fill_pattern") {
steps.emplace_back(posPrepareInfill);
} else if (opt_key == "fill_density") {
// One likely wants to reslice only when switching between zero infill to simulate boolean difference (subtracting volumes),
// normal infill and 100% (solid) infill.
const auto *old_density = old_config.option<ConfigOptionPercent>(opt_key);
const auto *new_density = new_config.option<ConfigOptionPercent>(opt_key);
assert(old_density && new_density);
//FIXME Vojtech is not quite sure about the 100% here, maybe it is not needed.
if (is_approx(old_density->value, 0.) || is_approx(old_density->value, 100.) ||
is_approx(new_density->value, 0.) || is_approx(new_density->value, 100.))
steps.emplace_back(posPerimeters);
steps.emplace_back(posPrepareInfill);
} else if (opt_key == "solid_infill_extrusion_width") {
// This value is used for calculating perimeter - infill overlap, thus perimeters need to be recalculated.
steps.emplace_back(posPerimeters);
steps.emplace_back(posPrepareInfill);
} else if (
opt_key == "external_perimeter_extrusion_width"
|| opt_key == "perimeter_extruder"
|| opt_key == "fuzzy_skin"
|| opt_key == "fuzzy_skin_thickness"
|| opt_key == "fuzzy_skin_point_dist"
|| opt_key == "overhangs"
|| opt_key == "thin_walls"
|| opt_key == "thick_bridges") {
steps.emplace_back(posPerimeters);
steps.emplace_back(posSupportMaterial);
} else if (opt_key == "bridge_flow_ratio") {
if (m_config.support_material_contact_distance > 0.) {
// Only invalidate due to bridging if bridging is enabled.
// If later "support_material_contact_distance" is modified, the complete PrintObject is invalidated anyway.
steps.emplace_back(posPerimeters);
steps.emplace_back(posInfill);
steps.emplace_back(posSupportMaterial);
}
} else if (
opt_key == "perimeter_generator"
|| opt_key == "wall_transition_length"
|| opt_key == "wall_transition_filter_deviation"
|| opt_key == "wall_transition_angle"
|| opt_key == "wall_distribution_count"
|| opt_key == "min_feature_size"
|| opt_key == "min_bead_width") {
steps.emplace_back(posSlice);
} else if (
opt_key == "seam_position"
|| opt_key == "scarf_seam_placement"
|| opt_key == "scarf_seam_only_on_smooth"
|| opt_key == "scarf_seam_start_height"
|| opt_key == "scarf_seam_entire_loop"
|| opt_key == "scarf_seam_length"
|| opt_key == "scarf_seam_max_segment_length"
|| opt_key == "scarf_seam_on_inner_perimeters"
|| opt_key == "seam_preferred_direction"
|| opt_key == "seam_preferred_direction_jitter"
|| opt_key == "support_material_speed"
|| opt_key == "support_material_interface_speed"
|| opt_key == "bridge_speed"
|| opt_key == "external_perimeter_speed"
|| opt_key == "small_perimeter_speed"
|| opt_key == "solid_infill_speed"
|| opt_key == "top_solid_infill_speed") {
invalidated |= m_print->invalidate_step(psGCodeExport);
} else if (
opt_key == "wipe_into_infill"
|| opt_key == "wipe_into_objects"
|| opt_key == "infill_speed"
|| opt_key == "perimeter_speed") {
invalidated |= m_print->invalidate_step(psWipeTower);
invalidated |= m_print->invalidate_step(psGCodeExport);
} else if (
opt_key == "enable_dynamic_overhang_speeds"
|| opt_key == "overhang_speed_0"
|| opt_key == "overhang_speed_1"
|| opt_key == "overhang_speed_2"
|| opt_key == "overhang_speed_3") {
steps.emplace_back(posPerimeters);
} else {
// for legacy, if we can't handle this option let's invalidate all steps
this->invalidate_all_steps();
invalidated = true;
}
}
sort_remove_duplicates(steps);
for (PrintObjectStep step : steps)
invalidated |= this->invalidate_step(step);
return invalidated;
}
bool PrintObject::invalidate_step(PrintObjectStep step)
{
bool invalidated = Inherited::invalidate_step(step);
// propagate to dependent steps
if (step == posPerimeters) {
invalidated |= this->invalidate_steps({ posPrepareInfill, posInfill, posIroning, posSupportSpotsSearch, posEstimateCurledExtrusions, posCalculateOverhangingPerimeters });
invalidated |= m_print->invalidate_steps({ psSkirtBrim });
} else if (step == posPrepareInfill) {
invalidated |= this->invalidate_steps({ posInfill, posIroning, posSupportSpotsSearch});
} else if (step == posInfill) {
invalidated |= this->invalidate_steps({ posIroning, posSupportSpotsSearch });
invalidated |= m_print->invalidate_steps({ psSkirtBrim });
} else if (step == posSlice) {
invalidated |= this->invalidate_steps({posPerimeters, posPrepareInfill, posInfill, posIroning, posSupportSpotsSearch,
posSupportMaterial, posEstimateCurledExtrusions, posCalculateOverhangingPerimeters});
invalidated |= m_print->invalidate_steps({ psSkirtBrim });
m_slicing_params.valid = false;
} else if (step == posSupportMaterial) {
invalidated |= m_print->invalidate_steps({ psSkirtBrim, });
invalidated |= this->invalidate_steps({ posEstimateCurledExtrusions });
m_slicing_params.valid = false;
}
// invalidate alerts step always, since it depends on everything (except supports, but with supports enabled it is skipped anyway.)
invalidated |= m_print->invalidate_step(psAlertWhenSupportsNeeded);
// Wipe tower depends on the ordering of extruders, which in turn depends on everything.
// It also decides about what the wipe_into_infill / wipe_into_object features will do,
// and that too depends on many of the settings.
invalidated |= m_print->invalidate_step(psWipeTower);
// Invalidate G-code export in any case.
invalidated |= m_print->invalidate_step(psGCodeExport);
return invalidated;
}
bool PrintObject::invalidate_all_steps()
{
// First call the "invalidate" functions, which may cancel background processing.
bool result = Inherited::invalidate_all_steps() | m_print->invalidate_all_steps();
// Then reset some of the depending values.
m_slicing_params.valid = false;
return result;
}
// Called on main thread with stopped or paused background processing to let PrintObject release data for its milestones that were invalidated or canceled.
void PrintObject::cleanup()
{
if (this->query_reset_dirty_step_unguarded(posInfill))
this->clear_fills();
if (this->query_reset_dirty_step_unguarded(posSupportMaterial))
this->clear_support_layers();
}
// This function analyzes slices of a region (SurfaceCollection slices).
// Each region slice (instance of Surface) is analyzed, whether it is supported or whether it is the top surface.
// Initially all slices are of type stInternal.
// Slices are compared against the top / bottom slices and regions and classified to the following groups:
// stTop - Part of a region, which is not covered by any upper layer. This surface will be filled with a top solid infill.
// stBottomBridge - Part of a region, which is not fully supported, but it hangs in the air, or it hangs losely on a support or a raft.
// stBottom - Part of a region, which is not supported by the same region, but it is supported either by another region, or by a soluble interface layer.
// stInternal - Part of a region, which is supported by the same region type.
// If a part of a region is of stBottom and stTop, the stBottom wins.
void PrintObject::detect_surfaces_type()
{
BOOST_LOG_TRIVIAL(info) << "Detecting solid surfaces..." << log_memory_info();
// Interface shells: the intersecting parts are treated as self standing objects supporting each other.
// Each of the objects will have a full number of top / bottom layers, even if these top / bottom layers
// are completely hidden inside a collective body of intersecting parts.
// This is useful if one of the parts is to be dissolved, or if it is transparent and the internal shells
// should be visible.
bool spiral_vase = this->print()->config().spiral_vase.value;
bool interface_shells = ! spiral_vase && m_config.interface_shells.value;
size_t num_layers = spiral_vase ? std::min(size_t(this->printing_region(0).config().bottom_solid_layers), m_layers.size()) : m_layers.size();
for (size_t region_id = 0; region_id < this->num_printing_regions(); ++ region_id) {