1412 lines
78 KiB
C++
1412 lines
78 KiB
C++
#include "ElephantFootCompensation.hpp"
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#include "I18N.hpp"
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#include "Layer.hpp"
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#include "MultiMaterialSegmentation.hpp"
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#include "Print.hpp"
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#include "ClipperUtils.hpp"
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#include "Interlocking/InterlockingGenerator.hpp"
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//BBS
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#include "ShortestPath.hpp"
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#include <boost/log/trivial.hpp>
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#include <tbb/parallel_for.h>
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//! macro used to mark string used at localization, return same string
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#define L(s) Slic3r::I18N::translate(s)
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namespace Slic3r {
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bool PrintObject::clip_multipart_objects = true;
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bool PrintObject::infill_only_where_needed = false;
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LayerPtrs new_layers(
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PrintObject *print_object,
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// Object layers (pairs of bottom/top Z coordinate), without the raft.
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const std::vector<coordf_t> &object_layers)
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{
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LayerPtrs out;
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out.reserve(object_layers.size());
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auto id = int(print_object->slicing_parameters().raft_layers());
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coordf_t zmin = print_object->slicing_parameters().object_print_z_min;
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Layer *prev = nullptr;
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for (size_t i_layer = 0; i_layer < object_layers.size(); i_layer += 2) {
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coordf_t lo = object_layers[i_layer];
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coordf_t hi = object_layers[i_layer + 1];
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coordf_t slice_z = 0.5 * (lo + hi);
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Layer *layer = new Layer(id ++, print_object, hi - lo, hi + zmin, slice_z);
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out.emplace_back(layer);
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if (prev != nullptr) {
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prev->upper_layer = layer;
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layer->lower_layer = prev;
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}
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prev = layer;
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}
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return out;
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}
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// Slice single triangle mesh.
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//对单个三角形网格进行切片。
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static std::vector<ExPolygons> slice_volume(
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const ModelVolume &volume,
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const std::vector<float> &zs,
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const MeshSlicingParamsEx ¶ms,
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const std::function<void()> &throw_on_cancel_callback)
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{
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std::vector<ExPolygons> layers;
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if (! zs.empty()) {
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indexed_triangle_set its = volume.mesh().its;
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if (its.indices.size() > 0) {
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MeshSlicingParamsEx params2 { params };
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params2.trafo = params2.trafo * volume.get_matrix();
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if (params2.trafo.rotation().determinant() < 0.)
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its_flip_triangles(its);
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layers = slice_mesh_ex(its, zs, params2, throw_on_cancel_callback);
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throw_on_cancel_callback();
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}
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}
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return layers;
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}
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// Slice single triangle mesh.
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// Filter the zs not inside the ranges. The ranges are closed at the bottom and open at the top, they are sorted lexicographically and non overlapping.
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//对单个三角形网格进行切片。
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//过滤不在范围内的zs。范围在底部是封闭的，在顶部是开放的，它们按字典顺序排列，不重叠。
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static std::vector<ExPolygons> slice_volume(
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const ModelVolume &volume,
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const std::vector<float> &z,
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const std::vector<t_layer_height_range> &ranges,
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const MeshSlicingParamsEx ¶ms,
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const std::function<void()> &throw_on_cancel_callback)
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{
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std::vector<ExPolygons> out;
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if (! z.empty() && ! ranges.empty()) {
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if (ranges.size() == 1 && z.front() >= ranges.front().first && z.back() < ranges.front().second) {
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// All layers fit into a single range.
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//所有层都适合一个范围。
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out = slice_volume(volume, z, params, throw_on_cancel_callback);
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} else {
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std::vector<float> z_filtered;
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std::vector<std::pair<size_t, size_t>> n_filtered;
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z_filtered.reserve(z.size());
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n_filtered.reserve(2 * ranges.size());
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size_t i = 0;
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for (const t_layer_height_range &range : ranges) {
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for (; i < z.size() && z[i] < range.first; ++ i) ;
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size_t first = i;
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for (; i < z.size() && z[i] < range.second; ++ i)
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z_filtered.emplace_back(z[i]);
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if (i > first)
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n_filtered.emplace_back(std::make_pair(first, i));
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}
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if (! n_filtered.empty()) {
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std::vector<ExPolygons> layers = slice_volume(volume, z_filtered, params, throw_on_cancel_callback);
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out.assign(z.size(), ExPolygons());
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i = 0;
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for (const std::pair<size_t, size_t> &span : n_filtered)
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for (size_t j = span.first; j < span.second; ++ j)
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out[j] = std::move(layers[i ++]);
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}
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}
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}
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return out;
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}
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static inline bool model_volume_needs_slicing(const ModelVolume &mv)
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{
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ModelVolumeType type = mv.type();
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return type == ModelVolumeType::MODEL_PART || type == ModelVolumeType::NEGATIVE_VOLUME || type == ModelVolumeType::PARAMETER_MODIFIER;
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}
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// Slice printable volumes, negative volumes and modifier volumes, sorted by ModelVolume::id().
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// Apply closing radius.
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// Apply positive XY compensation to ModelVolumeType::MODEL_PART and ModelVolumeType::PARAMETER_MODIFIER, not to ModelVolumeType::NEGATIVE_VOLUME.
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// Apply contour simplification.
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//切片可打印卷、负卷和修改器卷，按ModelVolume:：id（）排序。
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//应用闭合半径。
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//将正XY补偿应用于ModelVolumeType:：MODEL_PART和ModelVolumeType：：PARAMETERMODIFIER，而不是应用于ModelVolumeType:：NEGATIVE_VOLUME。
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//应用轮廓简化。
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static std::vector<VolumeSlices> slice_volumes_inner(
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const PrintConfig &print_config,
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const PrintObjectConfig &print_object_config,
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const Transform3d &object_trafo,
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ModelVolumePtrs model_volumes,
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const std::vector<PrintObjectRegions::LayerRangeRegions> &layer_ranges,
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const std::vector<float> &zs,
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const std::function<void()> &throw_on_cancel_callback)
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{
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model_volumes_sort_by_id(model_volumes);
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std::vector<VolumeSlices> out;
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out.reserve(model_volumes.size());
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std::vector<t_layer_height_range> slicing_ranges;
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if (layer_ranges.size() > 1)
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slicing_ranges.reserve(layer_ranges.size());
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MeshSlicingParamsEx params_base;
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params_base.closing_radius = print_object_config.slice_closing_radius.value;
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params_base.extra_offset = 0;
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params_base.trafo = object_trafo;
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//BBS: 0.0025mm is safe enough to simplify the data to speed slicing up for high-resolution model.
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//Also has on influence on arc fitting which has default resolution 0.0125mm.
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//BBS:0.0025mm足够安全，可以简化数据，加快高分辨率模型的切片速度。
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//对默认分辨率为0.0125mm的圆弧拟合也没有影响。
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params_base.resolution = print_config.resolution <= 0.001 ? 0.0f : 0.0025;
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switch (print_object_config.slicing_mode.value) {
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case SlicingMode::Regular: params_base.mode = MeshSlicingParams::SlicingMode::Regular; break;
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case SlicingMode::EvenOdd: params_base.mode = MeshSlicingParams::SlicingMode::EvenOdd; break;
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case SlicingMode::CloseHoles: params_base.mode = MeshSlicingParams::SlicingMode::Positive; break;
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}
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params_base.mode_below = params_base.mode;
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// BBS
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const size_t num_extruders = print_config.filament_diameter.size();
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const bool is_mm_painted = num_extruders > 1 && std::any_of(model_volumes.cbegin(), model_volumes.cend(), [](const ModelVolume *mv) { return mv->is_mm_painted(); });
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// BBS: don't do size compensation when slice volume.
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// Will handle contour and hole size compensation seperately later.
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//BBS：切片时不要做尺寸补偿。
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//稍后将分别处理轮廓和孔尺寸补偿。
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//const auto extra_offset = is_mm_painted ? 0.f : std::max(0.f, float(print_object_config.xy_contour_compensation.value));
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const auto extra_offset = 0.f;
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for (const ModelVolume *model_volume : model_volumes)
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if (model_volume_needs_slicing(*model_volume)) {
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MeshSlicingParamsEx params { params_base };
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if (! model_volume->is_negative_volume())
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params.extra_offset = extra_offset;
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if (layer_ranges.size() == 1) {
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if (const PrintObjectRegions::LayerRangeRegions &layer_range = layer_ranges.front(); layer_range.has_volume(model_volume->id())) {
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if (model_volume->is_model_part() && print_config.spiral_mode) {
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auto it = std::find_if(layer_range.volume_regions.begin(), layer_range.volume_regions.end(),
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[model_volume](const auto &slice){ return model_volume == slice.model_volume; });
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params.mode = MeshSlicingParams::SlicingMode::PositiveLargestContour;
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// Slice the bottom layers with SlicingMode::Regular.
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// This needs to be in sync with LayerRegion::make_perimeters() spiral_mode!
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//使用SlicingMode：：Regular对底层进行切片。
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//这需要与LayerRegion:：make_perimeters（）spiral_mode同步！
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const PrintRegionConfig ®ion_config = it->region->config();
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params.slicing_mode_normal_below_layer = size_t(region_config.bottom_shell_layers.value);
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for (; params.slicing_mode_normal_below_layer < zs.size() && zs[params.slicing_mode_normal_below_layer] < region_config.bottom_shell_thickness - EPSILON;
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++ params.slicing_mode_normal_below_layer);
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}
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out.push_back({
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model_volume->id(),
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slice_volume(*model_volume, zs, params, throw_on_cancel_callback)
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});
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}
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} else {
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assert(! print_config.spiral_mode);
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slicing_ranges.clear();
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for (const PrintObjectRegions::LayerRangeRegions &layer_range : layer_ranges)
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if (layer_range.has_volume(model_volume->id()))
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slicing_ranges.emplace_back(layer_range.layer_height_range);
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if (! slicing_ranges.empty())
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out.push_back({
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model_volume->id(),
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slice_volume(*model_volume, zs, slicing_ranges, params, throw_on_cancel_callback)
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});
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}
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if (! out.empty() && out.back().slices.empty())
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out.pop_back();
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}
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return out;
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}
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static inline VolumeSlices& volume_slices_find_by_id(std::vector<VolumeSlices> &volume_slices, const ObjectID id)
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{
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auto it = lower_bound_by_predicate(volume_slices.begin(), volume_slices.end(), [id](const VolumeSlices &vs) { return vs.volume_id < id; });
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assert(it != volume_slices.end() && it->volume_id == id);
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return *it;
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}
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static inline bool overlap_in_xy(const PrintObjectRegions::BoundingBox &l, const PrintObjectRegions::BoundingBox &r)
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{
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return ! (l.max().x() < r.min().x() || l.min().x() > r.max().x() ||
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l.max().y() < r.min().y() || l.min().y() > r.max().y());
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}
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static std::vector<PrintObjectRegions::LayerRangeRegions>::const_iterator layer_range_first(const std::vector<PrintObjectRegions::LayerRangeRegions> &layer_ranges, double z)
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{
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auto it = lower_bound_by_predicate(layer_ranges.begin(), layer_ranges.end(),
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[z](const PrintObjectRegions::LayerRangeRegions &lr) {
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return lr.layer_height_range.second < z && abs(lr.layer_height_range.second - z) > EPSILON;
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});
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assert(it != layer_ranges.end() && it->layer_height_range.first <= z && z <= it->layer_height_range.second);
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if (z == it->layer_height_range.second)
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if (auto it_next = it; ++ it_next != layer_ranges.end() && it_next->layer_height_range.first == z)
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it = it_next;
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assert(it != layer_ranges.end() && it->layer_height_range.first <= z && z <= it->layer_height_range.second);
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return it;
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}
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static std::vector<PrintObjectRegions::LayerRangeRegions>::const_iterator layer_range_next(
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const std::vector<PrintObjectRegions::LayerRangeRegions> &layer_ranges,
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std::vector<PrintObjectRegions::LayerRangeRegions>::const_iterator it,
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double z)
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{
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for (; it->layer_height_range.second <= z + EPSILON; ++ it)
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assert(it != layer_ranges.end());
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assert(it != layer_ranges.end() && it->layer_height_range.first <= z && z < it->layer_height_range.second);
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return it;
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}
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static std::vector<std::vector<ExPolygons>> slices_to_regions(
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ModelVolumePtrs model_volumes,
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const PrintObjectRegions &print_object_regions,
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const std::vector<float> &zs,
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std::vector<VolumeSlices> &&volume_slices,
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// If clipping is disabled, then ExPolygons produced by different volumes will never be merged, thus they will be allowed to overlap.
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// It is up to the model designer to handle these overlaps.
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//如果禁用剪裁，则由不同体积生成的ExPolygon将永远不会合并，因此它们将被允许重叠。
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//由模型设计者来处理这些重叠。
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const bool clip_multipart_objects,
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const std::function<void()> &throw_on_cancel_callback)
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{
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model_volumes_sort_by_id(model_volumes);
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std::vector<std::vector<ExPolygons>> slices_by_region(print_object_regions.all_regions.size(), std::vector<ExPolygons>(zs.size(), ExPolygons()));
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// First shuffle slices into regions if there is no overlap with another region possible, collect zs of the complex cases.
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//首先，若并没有可能和另一个区域重叠，则将切片洗牌到各个区域，收集复杂案例的zs。
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std::vector<std::pair<size_t, float>> zs_complex;
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{
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size_t z_idx = 0;
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for (const PrintObjectRegions::LayerRangeRegions &layer_range : print_object_regions.layer_ranges) {
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for (; z_idx < zs.size() && zs[z_idx] < layer_range.layer_height_range.first; ++ z_idx) ;
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if (layer_range.volume_regions.empty()) {
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} else if (layer_range.volume_regions.size() == 1) {
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const ModelVolume *model_volume = layer_range.volume_regions.front().model_volume;
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assert(model_volume != nullptr);
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if (model_volume->is_model_part()) {
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VolumeSlices &slices_src = volume_slices_find_by_id(volume_slices, model_volume->id());
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auto &slices_dst = slices_by_region[layer_range.volume_regions.front().region->print_object_region_id()];
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for (; z_idx < zs.size() && zs[z_idx] < layer_range.layer_height_range.second; ++ z_idx)
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slices_dst[z_idx] = std::move(slices_src.slices[z_idx]);
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}
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} else {
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zs_complex.reserve(zs.size());
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for (; z_idx < zs.size() && zs[z_idx] < layer_range.layer_height_range.second; ++ z_idx) {
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float z = zs[z_idx];
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int idx_first_printable_region = -1;
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bool complex = false;
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std::vector<int> printable_region_ids;
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for (int idx_region = 0; idx_region < int(layer_range.volume_regions.size()); ++ idx_region) {
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const PrintObjectRegions::VolumeRegion ®ion = layer_range.volume_regions[idx_region];
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if (region.bbox->min().z() <= z && region.bbox->max().z() >= z) {
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if (region.model_volume->is_model_part())
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printable_region_ids.push_back(idx_region);
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if (idx_first_printable_region == -1 && region.model_volume->is_model_part()) {
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idx_first_printable_region = idx_region;
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}
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else if (idx_first_printable_region != -1) {
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// Test for overlap with some other region.
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//测试是否与其他区域重叠。
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for (int idx_region2 = idx_first_printable_region; idx_region2 < idx_region; ++ idx_region2) {
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const PrintObjectRegions::VolumeRegion ®ion2 = layer_range.volume_regions[idx_region2];
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if (region2.bbox->min().z() <= z && region2.bbox->max().z() >= z && overlap_in_xy(*region.bbox, *region2.bbox)) {
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complex = true;
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break;
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}
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}
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}
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}
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}
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if (complex)
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zs_complex.push_back({ z_idx, z });
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else if (idx_first_printable_region >= 0) {
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for (int printable_region_id : printable_region_ids) {
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const PrintObjectRegions::VolumeRegion ®ion = layer_range.volume_regions[printable_region_id];
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append(slices_by_region[region.region->print_object_region_id()][z_idx], std::move(volume_slices_find_by_id(volume_slices, region.model_volume->id()).slices[z_idx]));
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}
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}
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}
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}
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throw_on_cancel_callback();
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}
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}
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// Second perform region clipping and assignment in parallel.
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//其次，并行执行区域裁剪和分配。
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if (! zs_complex.empty()) {
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std::vector<std::vector<VolumeSlices*>> layer_ranges_regions_to_slices(print_object_regions.layer_ranges.size(), std::vector<VolumeSlices*>());
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for (const PrintObjectRegions::LayerRangeRegions &layer_range : print_object_regions.layer_ranges) {
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std::vector<VolumeSlices*> &layer_range_regions_to_slices = layer_ranges_regions_to_slices[&layer_range - print_object_regions.layer_ranges.data()];
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layer_range_regions_to_slices.reserve(layer_range.volume_regions.size());
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for (const PrintObjectRegions::VolumeRegion ®ion : layer_range.volume_regions)
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layer_range_regions_to_slices.push_back(&volume_slices_find_by_id(volume_slices, region.model_volume->id()));
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}
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tbb::parallel_for(
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tbb::blocked_range<size_t>(0, zs_complex.size()),
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[&slices_by_region, &print_object_regions, &zs_complex, &layer_ranges_regions_to_slices, clip_multipart_objects, &throw_on_cancel_callback]
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(const tbb::blocked_range<size_t> &range) {
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float z = zs_complex[range.begin()].second;
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auto it_layer_range = layer_range_first(print_object_regions.layer_ranges, z);
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// Per volume_regions slices at this Z height.
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//按体积_区域在此Z高度处切片。
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struct RegionSlice {
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ExPolygons expolygons;
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// Identifier of this region in PrintObjectRegions::all_regions
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//PrintObjectRegions中此区域的标识符：：all_regions
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int region_id;
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ObjectID volume_id;
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bool operator<(const RegionSlice &rhs) const {
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bool this_empty = this->region_id < 0 || this->expolygons.empty();
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bool rhs_empty = rhs.region_id < 0 || rhs.expolygons.empty();
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// Sort the empty items to the end of the list.
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// Sort by region_id & volume_id lexicographically.
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//将空项目排序到列表末尾。
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//按region_id和volume_id按字母顺序排序。
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return ! this_empty && (rhs_empty || (this->region_id < rhs.region_id || (this->region_id == rhs.region_id && volume_id < volume_id)));
|
||
}
|
||
};
|
||
|
||
// BBS
|
||
auto trim_overlap = [](ExPolygons& expolys_a, ExPolygons& expolys_b) {
|
||
ExPolygons trimming_a;
|
||
ExPolygons trimming_b;
|
||
|
||
for (ExPolygon& expoly_a : expolys_a) {
|
||
BoundingBox bbox_a = get_extents(expoly_a);
|
||
ExPolygons expolys_new;
|
||
for (ExPolygon& expoly_b : expolys_b) {
|
||
BoundingBox bbox_b = get_extents(expoly_b);
|
||
if (!bbox_a.overlap(bbox_b))
|
||
continue;
|
||
|
||
ExPolygons temp = intersection_ex(expoly_b, expoly_a, ApplySafetyOffset::Yes);
|
||
if (temp.empty())
|
||
continue;
|
||
|
||
if (expoly_a.contour.length() > expoly_b.contour.length())
|
||
trimming_a.insert(trimming_a.end(), temp.begin(), temp.end());
|
||
else
|
||
trimming_b.insert(trimming_b.end(), temp.begin(), temp.end());
|
||
}
|
||
}
|
||
|
||
expolys_a = diff_ex(expolys_a, trimming_a);
|
||
expolys_b = diff_ex(expolys_b, trimming_b);
|
||
};
|
||
|
||
std::vector<RegionSlice> temp_slices;
|
||
for (size_t zs_complex_idx = range.begin(); zs_complex_idx < range.end(); ++ zs_complex_idx) {
|
||
auto [z_idx, z] = zs_complex[zs_complex_idx];
|
||
it_layer_range = layer_range_next(print_object_regions.layer_ranges, it_layer_range, z);
|
||
const PrintObjectRegions::LayerRangeRegions &layer_range = *it_layer_range;
|
||
{
|
||
std::vector<VolumeSlices*> &layer_range_regions_to_slices = layer_ranges_regions_to_slices[it_layer_range - print_object_regions.layer_ranges.begin()];
|
||
// Per volume_regions slices at thiz Z height.
|
||
//按体积_区域在Z高度处切片。
|
||
temp_slices.clear();
|
||
temp_slices.reserve(layer_range.volume_regions.size());
|
||
for (VolumeSlices* &slices : layer_range_regions_to_slices) {
|
||
const PrintObjectRegions::VolumeRegion &volume_region = layer_range.volume_regions[&slices - layer_range_regions_to_slices.data()];
|
||
temp_slices.push_back({ std::move(slices->slices[z_idx]), volume_region.region ? volume_region.region->print_object_region_id() : -1, volume_region.model_volume->id() });
|
||
}
|
||
}
|
||
for (int idx_region = 0; idx_region < int(layer_range.volume_regions.size()); ++ idx_region)
|
||
if (! temp_slices[idx_region].expolygons.empty()) {
|
||
const PrintObjectRegions::VolumeRegion ®ion = layer_range.volume_regions[idx_region];
|
||
if (region.model_volume->is_modifier()) {
|
||
assert(region.parent > -1);
|
||
bool next_region_same_modifier = idx_region + 1 < int(temp_slices.size()) && layer_range.volume_regions[idx_region + 1].model_volume == region.model_volume;
|
||
RegionSlice &parent_slice = temp_slices[region.parent];
|
||
RegionSlice &this_slice = temp_slices[idx_region];
|
||
ExPolygons source = std::move(this_slice.expolygons);
|
||
if (parent_slice.expolygons.empty()) {
|
||
this_slice .expolygons.clear();
|
||
} else {
|
||
this_slice .expolygons = intersection_ex(parent_slice.expolygons, source);
|
||
parent_slice.expolygons = diff_ex (parent_slice.expolygons, source);
|
||
}
|
||
if (next_region_same_modifier)
|
||
// To be used in the following iteration.
|
||
//将在以下迭代中使用。
|
||
temp_slices[idx_region + 1].expolygons = std::move(source);
|
||
} else if ((region.model_volume->is_model_part() && clip_multipart_objects) || region.model_volume->is_negative_volume()) {
|
||
// Clip every non-zero region preceding it.
|
||
//剪切它前面的每个非零区域。
|
||
for (int idx_region2 = 0; idx_region2 < idx_region; ++ idx_region2)
|
||
if (! temp_slices[idx_region2].expolygons.empty()) {
|
||
// Skip trim_overlap for now, because it slow down the performace so much for some special cases
|
||
//暂时跳过trim_overlap，因为在某些特殊情况下，它会大大降低性能
|
||
#if 1
|
||
if (const PrintObjectRegions::VolumeRegion& region2 = layer_range.volume_regions[idx_region2];
|
||
!region2.model_volume->is_negative_volume() && overlap_in_xy(*region.bbox, *region2.bbox))
|
||
temp_slices[idx_region2].expolygons = diff_ex(temp_slices[idx_region2].expolygons, temp_slices[idx_region].expolygons);
|
||
#else
|
||
const PrintObjectRegions::VolumeRegion& region2 = layer_range.volume_regions[idx_region2];
|
||
if (!region2.model_volume->is_negative_volume() && overlap_in_xy(*region.bbox, *region2.bbox))
|
||
//BBS: handle negative_volume seperately, always minus the negative volume and don't need to trim overlap
|
||
if (!region.model_volume->is_negative_volume())
|
||
trim_overlap(temp_slices[idx_region2].expolygons, temp_slices[idx_region].expolygons);
|
||
else
|
||
temp_slices[idx_region2].expolygons = diff_ex(temp_slices[idx_region2].expolygons, temp_slices[idx_region].expolygons);
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
// Sort by region_id, push empty slices to the end.
|
||
//按region_id排序，将空切片推到末尾。
|
||
std::sort(temp_slices.begin(), temp_slices.end());
|
||
// Remove the empty slices.
|
||
//移除空切片。
|
||
temp_slices.erase(std::find_if(temp_slices.begin(), temp_slices.end(), [](const auto &slice) { return slice.region_id == -1 || slice.expolygons.empty(); }), temp_slices.end());
|
||
// Merge slices and store them to the output.
|
||
//合并切片并将其存储到输出中。
|
||
for (int i = 0; i < int(temp_slices.size());) {
|
||
// Find a range of temp_slices with the same region_id.
|
||
//查找具有相同region_id的temp_slices范围。
|
||
int j = i;
|
||
bool merged = false;
|
||
ExPolygons &expolygons = temp_slices[i].expolygons;
|
||
for (++ j; j < int(temp_slices.size()) && temp_slices[i].region_id == temp_slices[j].region_id; ++ j)
|
||
if (ExPolygons &expolygons2 = temp_slices[j].expolygons; ! expolygons2.empty()) {
|
||
if (expolygons.empty()) {
|
||
expolygons = std::move(expolygons2);
|
||
} else {
|
||
append(expolygons, std::move(expolygons2));
|
||
merged = true;
|
||
}
|
||
}
|
||
// Don't unite the regions if ! clip_multipart_objects. In that case it is user's responsibility
|
||
// to handle region overlaps. Indeed, one may intentionally let the regions overlap to produce crossing perimeters
|
||
// for example.
|
||
//如果发生这种情况，不要团结各地区！clip_multipart_objects。在这种情况下，这是用户的责任
|
||
//以处理区域重叠。事实上，例如，人们可能会故意让这些区域重叠以产生交叉边界。
|
||
if (merged && clip_multipart_objects)
|
||
expolygons = closing_ex(expolygons, float(scale_(EPSILON)));
|
||
slices_by_region[temp_slices[i].region_id][z_idx] = std::move(expolygons);
|
||
i = j;
|
||
}
|
||
throw_on_cancel_callback();
|
||
}
|
||
});
|
||
}
|
||
|
||
return slices_by_region;
|
||
}
|
||
|
||
//BBS: justify whether a volume is connected to another one
|
||
bool doesVolumeIntersect(VolumeSlices& vs1, VolumeSlices& vs2)
|
||
{
|
||
if (vs1.volume_id == vs2.volume_id) return true;
|
||
// two volumes in the same object should have same number of layers, otherwise the slicing is incorrect.
|
||
if (vs1.slices.size() != vs2.slices.size()) return false;
|
||
|
||
auto& vs1s = vs1.slices;
|
||
auto& vs2s = vs2.slices;
|
||
bool is_intersect = false;
|
||
|
||
tbb::parallel_for(tbb::blocked_range<int>(0, vs1s.size()),
|
||
[&vs1s, &vs2s, &is_intersect](const tbb::blocked_range<int>& range) {
|
||
for (auto i = range.begin(); i != range.end(); ++i) {
|
||
if (vs1s[i].empty()) continue;
|
||
|
||
if (overlaps(vs1s[i], vs2s[i])) {
|
||
is_intersect = true;
|
||
break;
|
||
}
|
||
if (i + 1 != vs2s.size() && overlaps(vs1s[i], vs2s[i + 1])) {
|
||
is_intersect = true;
|
||
break;
|
||
}
|
||
if (i - 1 >= 0 && overlaps(vs1s[i], vs2s[i - 1])) {
|
||
is_intersect = true;
|
||
break;
|
||
}
|
||
}
|
||
});
|
||
return is_intersect;
|
||
}
|
||
|
||
//BBS: grouping the volumes of an object according to their connection relationship
|
||
bool groupingVolumes(std::vector<VolumeSlices> objSliceByVolume, std::vector<groupedVolumeSlices>& groups, double resolution, int firstLayerReplacedBy)
|
||
{
|
||
std::vector<int> groupIndex(objSliceByVolume.size(), -1);
|
||
double offsetValue = 0.05 / SCALING_FACTOR;
|
||
|
||
std::vector<std::vector<int>> osvIndex;
|
||
for (int i = 0; i != objSliceByVolume.size(); ++i) {
|
||
for (int j = 0; j != objSliceByVolume[i].slices.size(); ++j) {
|
||
osvIndex.push_back({ i,j });
|
||
}
|
||
}
|
||
|
||
tbb::parallel_for(tbb::blocked_range<int>(0, osvIndex.size()),
|
||
[&osvIndex, &objSliceByVolume, &offsetValue, &resolution](const tbb::blocked_range<int>& range) {
|
||
for (auto k = range.begin(); k != range.end(); ++k) {
|
||
for (ExPolygon& poly_ex : objSliceByVolume[osvIndex[k][0]].slices[osvIndex[k][1]])
|
||
poly_ex.douglas_peucker(resolution);
|
||
}
|
||
});
|
||
|
||
tbb::parallel_for(tbb::blocked_range<int>(0, osvIndex.size()),
|
||
[&osvIndex, &objSliceByVolume,&offsetValue, &resolution](const tbb::blocked_range<int>& range) {
|
||
for (auto k = range.begin(); k != range.end(); ++k) {
|
||
objSliceByVolume[osvIndex[k][0]].slices[osvIndex[k][1]] = offset_ex(objSliceByVolume[osvIndex[k][0]].slices[osvIndex[k][1]], offsetValue);
|
||
}
|
||
});
|
||
|
||
for (int i = 0; i != objSliceByVolume.size(); ++i) {
|
||
if (groupIndex[i] < 0) {
|
||
groupIndex[i] = i;
|
||
}
|
||
for (int j = i + 1; j != objSliceByVolume.size(); ++j) {
|
||
if (doesVolumeIntersect(objSliceByVolume[i], objSliceByVolume[j])) {
|
||
if (groupIndex[j] < 0) groupIndex[j] = groupIndex[i];
|
||
if (groupIndex[j] != groupIndex[i]) {
|
||
int retain = std::min(groupIndex[i], groupIndex[j]);
|
||
int cover = std::max(groupIndex[i], groupIndex[j]);
|
||
for (int k = 0; k != objSliceByVolume.size(); ++k) {
|
||
if (groupIndex[k] == cover) groupIndex[k] = retain;
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
std::vector<int> groupVector{};
|
||
for (int gi : groupIndex) {
|
||
bool exist = false;
|
||
for (int gv : groupVector) {
|
||
if (gv == gi) {
|
||
exist = true;
|
||
break;
|
||
}
|
||
}
|
||
if (!exist) groupVector.push_back(gi);
|
||
}
|
||
|
||
// group volumes and their slices according to the grouping Vector
|
||
groups.clear();
|
||
|
||
for (int gv : groupVector) {
|
||
groupedVolumeSlices gvs;
|
||
gvs.groupId = gv;
|
||
for (int i = 0; i != objSliceByVolume.size(); ++i) {
|
||
if (groupIndex[i] == gv) {
|
||
gvs.volume_ids.push_back(objSliceByVolume[i].volume_id);
|
||
append(gvs.slices, objSliceByVolume[i].slices[firstLayerReplacedBy]);
|
||
}
|
||
}
|
||
|
||
// the slices of a group should be unioned
|
||
gvs.slices = offset_ex(union_ex(gvs.slices), -offsetValue);
|
||
for (ExPolygon& poly_ex : gvs.slices)
|
||
poly_ex.douglas_peucker(resolution);
|
||
|
||
groups.push_back(gvs);
|
||
}
|
||
return true;
|
||
}
|
||
|
||
//BBS: filter the members of "objSliceByVolume" such that only "model_part" are included
|
||
std::vector<VolumeSlices> findPartVolumes(const std::vector<VolumeSlices>& objSliceByVolume, ModelVolumePtrs model_volumes) {
|
||
std::vector<VolumeSlices> outPut;
|
||
for (const auto& vs : objSliceByVolume) {
|
||
for (const auto& mv : model_volumes) {
|
||
if (vs.volume_id == mv->id() && mv->is_model_part()) outPut.push_back(vs);
|
||
}
|
||
}
|
||
return outPut;
|
||
}
|
||
|
||
void applyNegtiveVolumes(ModelVolumePtrs model_volumes, const std::vector<VolumeSlices>& objSliceByVolume, std::vector<groupedVolumeSlices>& groups, double resolution) {
|
||
ExPolygons negTotal;
|
||
for (const auto& vs : objSliceByVolume) {
|
||
for (const auto& mv : model_volumes) {
|
||
if (vs.volume_id == mv->id() && mv->is_negative_volume()) {
|
||
if (vs.slices.size() > 0) {
|
||
append(negTotal, vs.slices.front());
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
for (auto& g : groups) {
|
||
g.slices = diff_ex(g.slices, negTotal);
|
||
for (ExPolygon& poly_ex : g.slices)
|
||
poly_ex.douglas_peucker(resolution);
|
||
}
|
||
}
|
||
|
||
void reGroupingLayerPolygons(std::vector<groupedVolumeSlices>& gvss, ExPolygons &eps, double resolution)
|
||
{
|
||
std::vector<int> epsIndex;
|
||
epsIndex.resize(eps.size(), -1);
|
||
|
||
auto gvssc = gvss;
|
||
auto epsc = eps;
|
||
|
||
for (ExPolygon& poly_ex : epsc)
|
||
poly_ex.douglas_peucker(resolution);
|
||
|
||
for (int i = 0; i != gvssc.size(); ++i) {
|
||
for (ExPolygon& poly_ex : gvssc[i].slices)
|
||
poly_ex.douglas_peucker(resolution);
|
||
}
|
||
|
||
tbb::parallel_for(tbb::blocked_range<int>(0, epsc.size()),
|
||
[&epsc, &gvssc, &epsIndex](const tbb::blocked_range<int>& range) {
|
||
for (auto ie = range.begin(); ie != range.end(); ++ie) {
|
||
if (epsc[ie].area() <= 0)
|
||
continue;
|
||
|
||
double minArea = epsc[ie].area();
|
||
for (int iv = 0; iv != gvssc.size(); iv++) {
|
||
auto clipedExPolys = diff_ex(epsc[ie], gvssc[iv].slices);
|
||
double area = 0;
|
||
for (const auto& ce : clipedExPolys) {
|
||
area += ce.area();
|
||
}
|
||
if (area < minArea) {
|
||
minArea = area;
|
||
epsIndex[ie] = iv;
|
||
}
|
||
}
|
||
}
|
||
});
|
||
|
||
for (int iv = 0; iv != gvss.size(); iv++)
|
||
gvss[iv].slices.clear();
|
||
|
||
for (int ie = 0; ie != eps.size(); ie++) {
|
||
if (epsIndex[ie] >= 0)
|
||
gvss[epsIndex[ie]].slices.push_back(eps[ie]);
|
||
}
|
||
}
|
||
|
||
std::string fix_slicing_errors(PrintObject* object, LayerPtrs &layers, const std::function<void()> &throw_if_canceled, int &firstLayerReplacedBy)
|
||
{
|
||
std::string error_msg;//BBS
|
||
|
||
if (layers.size() == 0) return error_msg;
|
||
|
||
// Collect layers with slicing errors.
|
||
// These layers will be fixed in parallel.
|
||
std::vector<size_t> buggy_layers;
|
||
buggy_layers.reserve(layers.size());
|
||
// BBS: get largest external perimenter width of all layers
|
||
auto get_ext_peri_width = [](Layer* layer) {return layer->m_regions.empty() ? 0 : layer->m_regions[0]->flow(frExternalPerimeter).scaled_width(); };
|
||
auto it = std::max_element(layers.begin(), layers.end(), [get_ext_peri_width](auto& a, auto& b) {return get_ext_peri_width(a) < get_ext_peri_width(b); });
|
||
coord_t thresh = get_ext_peri_width(*it) * 0.5;// half of external perimeter width // 0.5 * scale_(this->config().line_width);
|
||
for (size_t idx_layer = 0; idx_layer < layers.size(); ++idx_layer) {
|
||
// BBS: detect empty layers (layers with very small regions) and mark them as problematic, then these layers will copy the nearest good layer
|
||
auto layer = layers[idx_layer];
|
||
ExPolygons lslices;
|
||
for (size_t region_id = 0; region_id < layer->m_regions.size(); ++region_id) {
|
||
LayerRegion* layerm = layer->m_regions[region_id];
|
||
for (auto& surface : layerm->slices.surfaces) {
|
||
auto expoly = offset_ex(surface.expolygon, -thresh);
|
||
lslices.insert(lslices.begin(), expoly.begin(), expoly.end());
|
||
}
|
||
}
|
||
if (lslices.empty()) {
|
||
layer->slicing_errors = true;
|
||
}
|
||
|
||
if (layers[idx_layer]->slicing_errors) {
|
||
buggy_layers.push_back(idx_layer);
|
||
}
|
||
else
|
||
break; // only detect empty layers near bed
|
||
}
|
||
|
||
BOOST_LOG_TRIVIAL(debug) << "Slicing objects - fixing slicing errors in parallel - begin";
|
||
std::atomic<bool> is_replaced = false;
|
||
tbb::parallel_for(
|
||
tbb::blocked_range<size_t>(0, buggy_layers.size()),
|
||
[&layers, &throw_if_canceled, &buggy_layers, &is_replaced](const tbb::blocked_range<size_t>& range) {
|
||
for (size_t buggy_layer_idx = range.begin(); buggy_layer_idx < range.end(); ++ buggy_layer_idx) {
|
||
throw_if_canceled();
|
||
size_t idx_layer = buggy_layers[buggy_layer_idx];
|
||
// BBS: only replace empty layers lower than 1mm
|
||
const coordf_t thresh_empty_layer_height = 1;
|
||
Layer* layer = layers[idx_layer];
|
||
if (layer->print_z>= thresh_empty_layer_height)
|
||
continue;
|
||
assert(layer->slicing_errors);
|
||
// Try to repair the layer surfaces by merging all contours and all holes from neighbor layers.
|
||
// BOOST_LOG_TRIVIAL(trace) << "Attempting to repair layer" << idx_layer;
|
||
for (size_t region_id = 0; region_id < layer->region_count(); ++ region_id) {
|
||
LayerRegion *layerm = layer->get_region(region_id);
|
||
// Find the first valid layer below / above the current layer.
|
||
const Surfaces *upper_surfaces = nullptr;
|
||
const Surfaces *lower_surfaces = nullptr;
|
||
//BBS: only repair empty layers lowers than 1mm
|
||
for (size_t j = idx_layer + 1; j < layers.size(); ++j) {
|
||
if (!layers[j]->slicing_errors) {
|
||
upper_surfaces = &layers[j]->regions()[region_id]->slices.surfaces;
|
||
break;
|
||
}
|
||
if (layers[j]->print_z >= thresh_empty_layer_height) break;
|
||
}
|
||
for (int j = int(idx_layer) - 1; j >= 0; --j) {
|
||
if (layers[j]->print_z >= thresh_empty_layer_height) continue;
|
||
if (!layers[j]->slicing_errors) {
|
||
lower_surfaces = &layers[j]->regions()[region_id]->slices.surfaces;
|
||
break;
|
||
}
|
||
}
|
||
// Collect outer contours and holes from the valid layers above & below.
|
||
ExPolygons expolys;
|
||
expolys.reserve(
|
||
((upper_surfaces == nullptr) ? 0 : upper_surfaces->size()) +
|
||
((lower_surfaces == nullptr) ? 0 : lower_surfaces->size()));
|
||
if (upper_surfaces)
|
||
for (const auto &surface : *upper_surfaces) {
|
||
expolys.emplace_back(surface.expolygon);
|
||
}
|
||
if (lower_surfaces)
|
||
for (const auto &surface : *lower_surfaces) {
|
||
expolys.emplace_back(surface.expolygon);
|
||
}
|
||
if (!expolys.empty()) {
|
||
//BBS
|
||
is_replaced = true;
|
||
layerm->slices.set(union_ex(expolys), stInternal);
|
||
}
|
||
}
|
||
// Update layer slices after repairing the single regions.
|
||
layer->make_slices();
|
||
}
|
||
});
|
||
throw_if_canceled();
|
||
BOOST_LOG_TRIVIAL(debug) << "Slicing objects - fixing slicing errors in parallel - end";
|
||
|
||
if(is_replaced)
|
||
error_msg = L("Empty layers around bottom are replaced by nearest normal layers.");
|
||
|
||
// remove empty layers from bottom
|
||
while (! layers.empty() && (layers.front()->lslices.empty() || layers.front()->empty())) {
|
||
delete layers.front();
|
||
layers.erase(layers.begin());
|
||
layers.front()->lower_layer = nullptr;
|
||
for (size_t i = 0; i < layers.size(); ++ i)
|
||
layers[i]->set_id(layers[i]->id() - 1);
|
||
}
|
||
|
||
//BBS
|
||
if(error_msg.empty() && !buggy_layers.empty())
|
||
error_msg = L("The model has too many empty layers.");
|
||
|
||
// BBS: first layer slices are sorted by volume group, if the first layer is empty and replaced by the 2nd layer
|
||
// the later will be stored in "object->firstLayerObjGroupsMod()"
|
||
if (!buggy_layers.empty() && buggy_layers.front() == 0 && layers.size() > 1)
|
||
firstLayerReplacedBy = 1;
|
||
|
||
return error_msg;
|
||
}
|
||
|
||
void groupingVolumesForBrim(PrintObject* object, LayerPtrs& layers, int firstLayerReplacedBy)
|
||
{
|
||
const auto scaled_resolution = scaled<double>(object->print()->config().resolution.value);
|
||
auto partsObjSliceByVolume = findPartVolumes(object->firstLayerObjSliceMod(), object->model_object()->volumes);
|
||
groupingVolumes(partsObjSliceByVolume, object->firstLayerObjGroupsMod(), scaled_resolution, firstLayerReplacedBy);
|
||
applyNegtiveVolumes(object->model_object()->volumes, object->firstLayerObjSliceMod(), object->firstLayerObjGroupsMod(), scaled_resolution);
|
||
|
||
// BBS: the actual first layer slices stored in layers are re-sorted by volume group and will be used to generate brim
|
||
reGroupingLayerPolygons(object->firstLayerObjGroupsMod(), layers.front()->lslices, scaled_resolution);
|
||
}
|
||
|
||
// Called by make_perimeters()
|
||
// 1) Decides Z positions of the layers,
|
||
// 2) Initializes layers and their regions
|
||
// 3) Slices the object meshes
|
||
// 4) Slices the modifier meshes and reclassifies the slices of the object meshes by the slices of the modifier meshes
|
||
// 5) Applies size compensation (offsets the slices in XY plane)
|
||
// 6) Replaces bad slices by the slices reconstructed from the upper/lower layer
|
||
// Resulting expolygons of layer regions are marked as Internal.
|
||
//由make_perimeters（）调用
|
||
//1）决定层的Z位置，
|
||
//2）初始化层及其区域
|
||
//3）分割对象网格
|
||
//4）对修改器网格进行切片，并根据修改器网格的切片对对象网格的切片进行重新分类
|
||
//5）应用尺寸补偿（偏移XY平面中的切片）
|
||
//6）用从上层/下层重建的切片替换坏切片
|
||
//层区域的扩展结果标记为内部。
|
||
void PrintObject::slice()
|
||
{
|
||
if (! this->set_started(posSlice))
|
||
return;
|
||
//BBS: add flag to reload scene for shell rendering
|
||
//BBS：添加标志以重新加载场景进行shell渲染
|
||
m_print->set_status(5, L("Slicing mesh"), PrintBase::SlicingStatus::RELOAD_SCENE);
|
||
std::vector<coordf_t> layer_height_profile;
|
||
this->update_layer_height_profile(*this->model_object(), m_slicing_params, layer_height_profile);
|
||
m_print->throw_if_canceled();
|
||
m_typed_slices = false;
|
||
this->clear_layers();
|
||
m_layers = new_layers(this, generate_object_layers(m_slicing_params, layer_height_profile, m_config.precise_z_height.value));
|
||
this->slice_volumes();
|
||
m_print->throw_if_canceled();
|
||
int firstLayerReplacedBy = 0;
|
||
|
||
#if 1
|
||
// Fix the model.
|
||
//FIXME is this the right place to do? It is done repeateadly at the UI and now here at the backend.
|
||
//FIXME是合适的地方吗？它在UI上重复完成，现在在后端完成。
|
||
std::string warning = fix_slicing_errors(this, m_layers, [this](){ m_print->throw_if_canceled(); }, firstLayerReplacedBy);
|
||
m_print->throw_if_canceled();
|
||
//BBS: send warning message to slicing callback
|
||
// This warning is inaccurate, because the empty layers may have been replaced, or the model has supports.
|
||
//if (!warning.empty()) {
|
||
// BOOST_LOG_TRIVIAL(info) << warning;
|
||
// this->active_step_add_warning(PrintStateBase::WarningLevel::CRITICAL, warning, PrintStateBase::SlicingReplaceInitEmptyLayers);
|
||
//}
|
||
#endif
|
||
|
||
// BBS: the actual first layer slices stored in layers are re-sorted by volume group and will be used to generate brim
|
||
//BBS：存储在层中的实际第一层切片按卷组重新排序，并将用于生成边缘
|
||
groupingVolumesForBrim(this, m_layers, firstLayerReplacedBy);
|
||
|
||
// Update bounding boxes, back up raw slices of complex models.
|
||
//更新边界框，备份复杂模型的原始切片。
|
||
tbb::parallel_for(
|
||
tbb::blocked_range<size_t>(0, m_layers.size()),
|
||
[this](const tbb::blocked_range<size_t>& range) {
|
||
for (size_t layer_idx = range.begin(); layer_idx < range.end(); ++ layer_idx) {
|
||
m_print->throw_if_canceled();
|
||
Layer &layer = *m_layers[layer_idx];
|
||
layer.lslices_bboxes.clear();
|
||
layer.lslices_bboxes.reserve(layer.lslices.size());
|
||
for (const ExPolygon &expoly : layer.lslices)
|
||
layer.lslices_bboxes.emplace_back(get_extents(expoly));
|
||
layer.backup_untyped_slices();
|
||
}
|
||
});
|
||
if (m_layers.empty())
|
||
throw Slic3r::SlicingError(L("No layers were detected. You might want to repair your STL file(s) or check their size or thickness and retry.\n"));
|
||
|
||
// BBS
|
||
this->set_done(posSlice);
|
||
}
|
||
|
||
template<typename ThrowOnCancel>
|
||
static inline void apply_mm_segmentation(PrintObject &print_object, ThrowOnCancel throw_on_cancel)
|
||
{
|
||
// Returns MMU segmentation based on painting in MMU segmentation gizmo
|
||
//MMU分割控件中基于绘画的MMU分割返回
|
||
std::vector<std::vector<ExPolygons>> segmentation = multi_material_segmentation_by_painting(print_object, throw_on_cancel);
|
||
assert(segmentation.size() == print_object.layer_count());
|
||
tbb::parallel_for(
|
||
tbb::blocked_range<size_t>(0, segmentation.size(), std::max(segmentation.size() / 128, size_t(1))),
|
||
[&print_object, &segmentation, throw_on_cancel](const tbb::blocked_range<size_t> &range) {
|
||
const auto &layer_ranges = print_object.shared_regions()->layer_ranges;
|
||
double z = print_object.get_layer(range.begin())->slice_z;
|
||
auto it_layer_range = layer_range_first(layer_ranges, z);
|
||
// BBS
|
||
const size_t num_extruders = print_object.print()->config().filament_diameter.size();
|
||
struct ByExtruder {
|
||
ExPolygons expolygons;
|
||
BoundingBox bbox;
|
||
};
|
||
std::vector<ByExtruder> by_extruder;
|
||
struct ByRegion {
|
||
ExPolygons expolygons;
|
||
bool needs_merge { false };
|
||
};
|
||
std::vector<ByRegion> by_region;
|
||
for (size_t layer_id = range.begin(); layer_id < range.end(); ++ layer_id) {
|
||
throw_on_cancel();
|
||
Layer *layer = print_object.get_layer(layer_id);
|
||
it_layer_range = layer_range_next(layer_ranges, it_layer_range, layer->slice_z);
|
||
const PrintObjectRegions::LayerRangeRegions &layer_range = *it_layer_range;
|
||
// Gather per extruder expolygons.
|
||
//按照挤出机的规格进行收集。
|
||
by_extruder.assign(num_extruders, ByExtruder());
|
||
by_region.assign(layer->region_count(), ByRegion());
|
||
bool layer_split = false;
|
||
for (size_t extruder_id = 0; extruder_id < num_extruders; ++ extruder_id) {
|
||
ByExtruder ®ion = by_extruder[extruder_id];
|
||
append(region.expolygons, std::move(segmentation[layer_id][extruder_id]));
|
||
if (! region.expolygons.empty()) {
|
||
region.bbox = get_extents(region.expolygons);
|
||
layer_split = true;
|
||
}
|
||
}
|
||
if (! layer_split)
|
||
continue;
|
||
// Split LayerRegions by by_extruder regions.
|
||
// layer_range.painted_regions are sorted by extruder ID and parent PrintObject region ID.
|
||
//按by_extruder区域拆分图层区域。
|
||
//layer_range.painted_regions按挤出机ID和父打印对象区域ID排序。
|
||
auto it_painted_region = layer_range.painted_regions.begin();
|
||
for (int region_id = 0; region_id < int(layer->region_count()); ++ region_id)
|
||
if (LayerRegion &layerm = *layer->get_region(region_id); ! layerm.slices.surfaces.empty()) {
|
||
assert(layerm.region().print_object_region_id() == region_id);
|
||
const BoundingBox bbox = get_extents(layerm.slices.surfaces);
|
||
assert(it_painted_region < layer_range.painted_regions.end());
|
||
// Find the first it_painted_region which overrides this region.
|
||
//找到覆盖此区域的第一个it_paoint_region。
|
||
for (; layer_range.volume_regions[it_painted_region->parent].region->print_object_region_id() < region_id; ++ it_painted_region)
|
||
assert(it_painted_region != layer_range.painted_regions.end());
|
||
assert(it_painted_region != layer_range.painted_regions.end());
|
||
assert(layer_range.volume_regions[it_painted_region->parent].region == &layerm.region());
|
||
// 1-based extruder ID
|
||
//1-基挤出机ID
|
||
bool self_trimmed = false;
|
||
int self_extruder_id = -1;
|
||
for (int extruder_id = 1; extruder_id <= int(by_extruder.size()); ++ extruder_id)
|
||
if (ByExtruder &segmented = by_extruder[extruder_id - 1]; segmented.bbox.defined && bbox.overlap(segmented.bbox)) {
|
||
// Find the target region.
|
||
//找到目标区域。
|
||
for (; int(it_painted_region->extruder_id) < extruder_id; ++ it_painted_region)
|
||
assert(it_painted_region != layer_range.painted_regions.end());
|
||
assert(layer_range.volume_regions[it_painted_region->parent].region == &layerm.region() && int(it_painted_region->extruder_id) == extruder_id);
|
||
//FIXME Don't trim by self, it is not reliable.
|
||
//FIXME不要自己修剪，它不可靠。
|
||
if (&layerm.region() == it_painted_region->region) {
|
||
self_extruder_id = extruder_id;
|
||
continue;
|
||
}
|
||
// Steal from this region.
|
||
//从这个地区偷东西。
|
||
int target_region_id = it_painted_region->region->print_object_region_id();
|
||
ExPolygons stolen = intersection_ex(layerm.slices.surfaces, segmented.expolygons);
|
||
if (! stolen.empty()) {
|
||
ByRegion &dst = by_region[target_region_id];
|
||
if (dst.expolygons.empty()) {
|
||
dst.expolygons = std::move(stolen);
|
||
} else {
|
||
append(dst.expolygons, std::move(stolen));
|
||
dst.needs_merge = true;
|
||
}
|
||
}
|
||
#if 0
|
||
if (&layerm.region() == it_painted_region->region)
|
||
// Slices of this LayerRegion were trimmed by a MMU region of the same PrintRegion.
|
||
self_trimmed = true;
|
||
#endif
|
||
}
|
||
if (! self_trimmed) {
|
||
// Trim slices of this LayerRegion with all the MMU regions.
|
||
//使用所有MMU区域修剪此LayerRegion的切片。
|
||
Polygons mine = to_polygons(std::move(layerm.slices.surfaces));
|
||
for (auto &segmented : by_extruder)
|
||
if (&segmented - by_extruder.data() + 1 != self_extruder_id && segmented.bbox.defined && bbox.overlap(segmented.bbox)) {
|
||
mine = diff(mine, segmented.expolygons);
|
||
if (mine.empty())
|
||
break;
|
||
}
|
||
// Filter out unprintable polygons produced by subtraction multi-material painted regions from layerm.region().
|
||
// ExPolygon returned from multi-material segmentation does not precisely match ExPolygons in layerm.region()
|
||
// (because of preprocessing of the input regions in multi-material segmentation). Therefore, subtraction from
|
||
// layerm.region() could produce a huge number of small unprintable regions for the model's base extruder.
|
||
// This could, on some models, produce bulges with the model's base color (#7109).
|
||
//过滤掉通过从layrm.region（）中减去多材质绘制区域而产生的无法打印的多边形。
|
||
//从多材质分割返回的ExPolygon与layem.region（）中的ExPolygons不完全匹配（因为多材质分割中的输入区域进行了预处理）。因此，从layer.region（）中减去可能会为模型的基础挤出机产生大量无法打印的小区域。
|
||
//在某些型号上，这可能会产生与型号基础颜色相同的凸起（#7109）。
|
||
if (! mine.empty())
|
||
mine = opening(union_ex(mine), float(scale_(5 * EPSILON)), float(scale_(5 * EPSILON)));
|
||
if (! mine.empty()) {
|
||
ByRegion &dst = by_region[layerm.region().print_object_region_id()];
|
||
if (dst.expolygons.empty()) {
|
||
dst.expolygons = union_ex(mine);
|
||
} else {
|
||
append(dst.expolygons, union_ex(mine));
|
||
dst.needs_merge = true;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
// Re-create Surfaces of LayerRegions.
|
||
//重新创建图层区域的曲面。
|
||
for (size_t region_id = 0; region_id < layer->region_count(); ++ region_id) {
|
||
ByRegion &src = by_region[region_id];
|
||
if (src.needs_merge)
|
||
// Multiple regions were merged into one.
|
||
//多个区域合并为一个。
|
||
src.expolygons = closing_ex(src.expolygons, float(scale_(10 * EPSILON)));
|
||
layer->get_region(region_id)->slices.set(std::move(src.expolygons), stInternal);
|
||
}
|
||
}
|
||
});
|
||
}
|
||
|
||
|
||
// 1) Decides Z positions of the layers,
|
||
// 2) Initializes layers and their regions
|
||
// 3) Slices the object meshes
|
||
// 4) Slices the modifier meshes and reclassifies the slices of the object meshes by the slices of the modifier meshes
|
||
// 5) Applies size compensation (offsets the slices in XY plane)
|
||
// 6) Replaces bad slices by the slices reconstructed from the upper/lower layer
|
||
// Resulting expolygons of layer regions are marked as Internal.
|
||
//
|
||
// this should be idempotent
|
||
//1）决定层的Z位置，
|
||
//2）初始化层及其区域
|
||
//3）分割对象网格
|
||
//4）对修改器网格进行切片，并根据修改器网格的切片对对象网格的切片进行重新分类
|
||
//5）应用尺寸补偿（偏移XY平面中的切片）
|
||
//6）用从上层/下层重建的切片替换坏切片
|
||
//层区域的扩展结果标记为内部。
|
||
//
|
||
//这应该是幂等的
|
||
void PrintObject::slice_volumes()
|
||
{
|
||
BOOST_LOG_TRIVIAL(info) << "Slicing volumes..." << log_memory_info();
|
||
const Print *print = this->print();
|
||
const auto throw_on_cancel_callback = std::function<void()>([print](){ print->throw_if_canceled(); });
|
||
|
||
// Clear old LayerRegions, allocate for new PrintRegions.
|
||
//清除旧的LayerRegions，为新的PrintRegions分配。
|
||
for (Layer* layer : m_layers) {
|
||
//BBS: should delete all LayerRegionPtr to avoid memory leak
|
||
//BBS：应删除所有LayerRegionPtr以避免内存泄漏
|
||
while (!layer->m_regions.empty()) {
|
||
if (layer->m_regions.back())
|
||
delete layer->m_regions.back();
|
||
layer->m_regions.pop_back();
|
||
}
|
||
layer->m_regions.reserve(m_shared_regions->all_regions.size());
|
||
for (const std::unique_ptr<PrintRegion> &pr : m_shared_regions->all_regions)
|
||
layer->m_regions.emplace_back(new LayerRegion(layer, pr.get()));
|
||
}
|
||
|
||
std::vector<float> slice_zs = zs_from_layers(m_layers);
|
||
std::vector<VolumeSlices> objSliceByVolume;
|
||
if (!slice_zs.empty()) {
|
||
objSliceByVolume = slice_volumes_inner(
|
||
print->config(), this->config(), this->trafo_centered(),
|
||
this->model_object()->volumes, m_shared_regions->layer_ranges, slice_zs, throw_on_cancel_callback);
|
||
}
|
||
|
||
//BBS: "model_part" volumes are grouded according to their connections
|
||
//const auto scaled_resolution = scaled<double>(print->config().resolution.value);
|
||
//firstLayerObjSliceByVolume = findPartVolumes(objSliceByVolume, this->model_object()->volumes);
|
||
//groupingVolumes(objSliceByVolumeParts, firstLayerObjSliceByGroups, scaled_resolution);
|
||
//applyNegtiveVolumes(this->model_object()->volumes, objSliceByVolume, firstLayerObjSliceByGroups, scaled_resolution);
|
||
//BBS:“model_part”卷根据其连接进行分组
|
||
//const auto-scaled_resolution=scaled<double>（打印->config（）.reresolution.value）；
|
||
//firstLayerObjSliceByVolume=findPartVolumes（objSliceByVolume，此->模型对象（）->卷）；
|
||
//分组卷（objSliceByVolumeParts、firstLayerObjSliceByGroups、scaled_session）；
|
||
//applyNegativeVolumes（此->模型对象（）->卷、objSliceByVolume、firstLayerObjSliceByGroups、scaled_session）；
|
||
firstLayerObjSliceByVolume = objSliceByVolume;
|
||
|
||
std::vector<std::vector<ExPolygons>> region_slices = slices_to_regions(this->model_object()->volumes, *m_shared_regions, slice_zs,
|
||
std::move(objSliceByVolume),
|
||
PrintObject::clip_multipart_objects,
|
||
throw_on_cancel_callback);
|
||
|
||
for (size_t region_id = 0; region_id < region_slices.size(); ++ region_id) {
|
||
std::vector<ExPolygons> &by_layer = region_slices[region_id];
|
||
for (size_t layer_id = 0; layer_id < by_layer.size(); ++ layer_id)
|
||
m_layers[layer_id]->regions()[region_id]->slices.append(std::move(by_layer[layer_id]), stInternal);
|
||
}
|
||
region_slices.clear();
|
||
|
||
BOOST_LOG_TRIVIAL(debug) << "Slicing volumes - removing top empty layers";
|
||
while (! m_layers.empty()) {
|
||
const Layer *layer = m_layers.back();
|
||
if (! layer->empty())
|
||
break;
|
||
delete layer;
|
||
m_layers.pop_back();
|
||
}
|
||
if (! m_layers.empty())
|
||
m_layers.back()->upper_layer = nullptr;
|
||
m_print->throw_if_canceled();
|
||
|
||
// Is any ModelVolume MMU painted?
|
||
//是否有任何ModelVolume MMU涂漆？
|
||
if (const auto& volumes = this->model_object()->volumes;
|
||
m_print->config().filament_diameter.size() > 1 && // BBS
|
||
std::find_if(volumes.begin(), volumes.end(), [](const ModelVolume* v) { return !v->mmu_segmentation_facets.empty(); }) != volumes.end()) {
|
||
|
||
// If XY Size compensation is also enabled, notify the user that XY Size compensation
|
||
// would not be used because the object is multi-material painted.
|
||
//如果还启用了XY尺寸补偿，请通知用户XY尺寸补偿
|
||
//不会使用，因为该对象是多材质绘制的。
|
||
if (m_config.xy_hole_compensation.value != 0.f || m_config.xy_contour_compensation.value != 0.f) {
|
||
this->active_step_add_warning(
|
||
PrintStateBase::WarningLevel::CRITICAL,
|
||
L("An object's XY size compensation will not be used because it is also color-painted.\nXY Size "
|
||
"compensation can not be combined with color-painting."));
|
||
BOOST_LOG_TRIVIAL(info) << "xy compensation will not work for object " << this->model_object()->name << " for multi filament.";
|
||
}
|
||
|
||
BOOST_LOG_TRIVIAL(debug) << "Slicing volumes - MMU segmentation";
|
||
apply_mm_segmentation(*this, [print]() { print->throw_if_canceled(); });
|
||
}
|
||
|
||
|
||
InterlockingGenerator::generate_interlocking_structure(this);
|
||
m_print->throw_if_canceled();
|
||
|
||
// SuperSlicer: filament shrink
|
||
//SuperSlicer：长丝收缩
|
||
for (Layer *layer : m_layers) {
|
||
for (size_t i = 0; i < layer->region_count(); ++i) {
|
||
LayerRegion *region = layer->get_region(i);
|
||
ExPolygons ex_polys = to_expolygons(region->slices.surfaces);
|
||
int filament_id = region->region().extruder(FlowRole::frPerimeter) - 1;
|
||
double scale = print->config().filament_shrink.values[filament_id] * 0.01;
|
||
if (scale != 1) {
|
||
scale = 1 / scale;
|
||
for (ExPolygon &poly : ex_polys)
|
||
poly.scale(scale);
|
||
}
|
||
|
||
region->slices.set(std::move(ex_polys), stInternal);
|
||
}
|
||
}
|
||
|
||
BOOST_LOG_TRIVIAL(debug) << "Slicing volumes - make_slices in parallel - begin";
|
||
{
|
||
// Compensation value, scaled. Only applying the negative scaling here, as the positive scaling has already been applied during slicing.
|
||
//补偿值，按比例计算。此处仅应用负缩放，因为在切片过程中已经应用了正缩放。
|
||
const size_t num_extruders = print->config().filament_diameter.size();
|
||
const auto xy_hole_scaled = (num_extruders > 1 && this->is_mm_painted()) ? scaled<float>(0.f) : scaled<float>(m_config.xy_hole_compensation.value);
|
||
const auto xy_contour_scaled = (num_extruders > 1 && this->is_mm_painted()) ? scaled<float>(0.f) : scaled<float>(m_config.xy_contour_compensation.value);
|
||
const float elephant_foot_compensation_scaled = (m_config.raft_layers == 0) ?
|
||
// Only enable Elephant foot compensation if printing directly on the print bed.
|
||
//仅在直接在打印床上打印时启用象脚补偿。
|
||
float(scale_(m_config.elefant_foot_compensation.value)) :
|
||
0.f;
|
||
// Uncompensated slices for the first layer in case the Elephant foot compensation is applied.
|
||
//在应用象脚补偿的情况下，第一层的无补偿切片。
|
||
ExPolygons lslices_1st_layer;
|
||
//BBS: this part has been changed a lot to support seperated contour and hole size compensation
|
||
//BBS：这部分已经做了很多更改，以支持单独的轮廓和孔尺寸补偿
|
||
tbb::parallel_for(
|
||
tbb::blocked_range<size_t>(0, m_layers.size()),
|
||
[this, xy_hole_scaled, xy_contour_scaled, elephant_foot_compensation_scaled, &lslices_1st_layer](const tbb::blocked_range<size_t>& range) {
|
||
for (size_t layer_id = range.begin(); layer_id < range.end(); ++ layer_id) {
|
||
m_print->throw_if_canceled();
|
||
Layer *layer = m_layers[layer_id];
|
||
// Apply size compensation and perform clipping of multi-part objects.
|
||
//应用尺寸补偿并对多部分对象进行剪裁。
|
||
float elfoot = (layer_id == 0) ? elephant_foot_compensation_scaled : 0.f;
|
||
if (layer->m_regions.size() == 1) {
|
||
// Optimized version for a single region layer.
|
||
// Single region, growing or shrinking.
|
||
//针对单个区域层的优化版本。
|
||
//单一地区，增长或萎缩。
|
||
LayerRegion *layerm = layer->m_regions.front();
|
||
if (elfoot > 0) {
|
||
// Apply the elephant foot compensation and store the 1st layer slices without the Elephant foot compensation applied.
|
||
//应用象脚补偿，并存储未应用象脚赔偿的第一层切片。
|
||
lslices_1st_layer = to_expolygons(std::move(layerm->slices.surfaces));
|
||
if (xy_contour_scaled > 0 || xy_hole_scaled > 0) {
|
||
lslices_1st_layer = _shrink_contour_holes(std::max(0.f, xy_contour_scaled),
|
||
std::max(0.f, xy_hole_scaled),
|
||
lslices_1st_layer);
|
||
}
|
||
if (xy_contour_scaled < 0 || xy_hole_scaled < 0) {
|
||
lslices_1st_layer = _shrink_contour_holes(std::min(0.f, xy_contour_scaled),
|
||
std::min(0.f, xy_hole_scaled),
|
||
lslices_1st_layer);
|
||
}
|
||
layerm->slices.set(
|
||
union_ex(
|
||
Slic3r::elephant_foot_compensation(lslices_1st_layer,
|
||
layerm->flow(frExternalPerimeter), unscale<double>(elfoot))),
|
||
stInternal);
|
||
} else {
|
||
// Apply the XY contour and hole size compensation.
|
||
//应用XY轮廓和孔尺寸补偿。
|
||
if (xy_contour_scaled != 0.0f || xy_hole_scaled != 0.0f) {
|
||
ExPolygons expolygons = to_expolygons(std::move(layerm->slices.surfaces));
|
||
if (xy_contour_scaled > 0 || xy_hole_scaled > 0) {
|
||
expolygons = _shrink_contour_holes(std::max(0.f, xy_contour_scaled),
|
||
std::max(0.f, xy_hole_scaled),
|
||
expolygons);
|
||
}
|
||
if (xy_contour_scaled < 0 || xy_hole_scaled < 0) {
|
||
expolygons = _shrink_contour_holes(std::min(0.f, xy_contour_scaled),
|
||
std::min(0.f, xy_hole_scaled),
|
||
expolygons);
|
||
}
|
||
layerm->slices.set(std::move(expolygons), stInternal);
|
||
}
|
||
}
|
||
} else {
|
||
float max_growth = std::max(xy_hole_scaled, xy_contour_scaled);
|
||
float min_growth = std::min(xy_hole_scaled, xy_contour_scaled);
|
||
ExPolygons merged_poly_for_holes_growing;
|
||
if (max_growth > 0) {
|
||
//BBS: merge polygons because region can cut "holes".
|
||
//Then, cut them to give them again later to their region
|
||
//BBS：合并多边形，因为该区域可以切割“孔”。
|
||
//然后，把它们剪下来，稍后再送给它们所在的地区
|
||
merged_poly_for_holes_growing = layer->merged(float(SCALED_EPSILON));
|
||
merged_poly_for_holes_growing = _shrink_contour_holes(std::max(0.f, xy_contour_scaled),
|
||
std::max(0.f, xy_hole_scaled),
|
||
union_ex(merged_poly_for_holes_growing));
|
||
|
||
// BBS: clipping regions, priority is given to the first regions.
|
||
//BBS：剪切区域，优先剪切第一个区域。
|
||
Polygons processed;
|
||
for (size_t region_id = 0; region_id < layer->regions().size(); ++region_id) {
|
||
ExPolygons slices = to_expolygons(std::move(layer->m_regions[region_id]->slices.surfaces));
|
||
if (max_growth > 0.f) {
|
||
slices = intersection_ex(offset_ex(slices, max_growth), merged_poly_for_holes_growing);
|
||
}
|
||
|
||
//BBS: Trim by the slices of already processed regions.
|
||
//BBS：按已加工区域的切片进行修剪。
|
||
if (region_id > 0)
|
||
slices = diff_ex(to_polygons(std::move(slices)), processed);
|
||
if (region_id + 1 < layer->regions().size())
|
||
// Collect the already processed regions to trim the to be processed regions.
|
||
//收集已处理的区域以修剪待处理的区域。
|
||
polygons_append(processed, slices);
|
||
layer->m_regions[region_id]->slices.set(std::move(slices), stInternal);
|
||
}
|
||
}
|
||
if (min_growth < 0.f || elfoot > 0.f) {
|
||
// Apply the negative XY compensation. (the ones that is <0)
|
||
//应用负XY补偿。（小于0的那些）
|
||
ExPolygons trimming;
|
||
static const float eps = float(scale_(m_config.slice_closing_radius.value) * 1.5);
|
||
if (elfoot > 0.f) {
|
||
lslices_1st_layer = offset_ex(layer->merged(eps), -eps);
|
||
trimming = Slic3r::elephant_foot_compensation(lslices_1st_layer,
|
||
layer->m_regions.front()->flow(frExternalPerimeter), unscale<double>(elfoot));
|
||
} else {
|
||
trimming = layer->merged(float(SCALED_EPSILON));
|
||
}
|
||
if (min_growth < 0.0f)
|
||
trimming = _shrink_contour_holes(std::min(0.f, xy_contour_scaled),
|
||
std::min(0.f, xy_hole_scaled),
|
||
trimming);
|
||
//BBS: trim surfaces
|
||
//BBS：修整表面
|
||
for (size_t region_id = 0; region_id < layer->regions().size(); ++region_id) {
|
||
// BBS: split trimming result by region
|
||
//BBS：按地区划分修剪结果
|
||
ExPolygons contour_exp = to_expolygons(std::move(layer->regions()[region_id]->slices.surfaces));
|
||
|
||
layer->regions()[region_id]->slices.set(intersection_ex(contour_exp, to_polygons(trimming)), stInternal);
|
||
}
|
||
}
|
||
}
|
||
// Merge all regions' slices to get islands, chain them by a shortest path.
|
||
//合并所有区域的切片以获得岛屿，用最短路径将它们链接起来。
|
||
if (this->config().enable_circle_compensation)
|
||
layer->apply_auto_circle_compensation();
|
||
layer->make_slices();
|
||
}
|
||
});
|
||
if (elephant_foot_compensation_scaled > 0.f && ! m_layers.empty()) {
|
||
// The Elephant foot has been compensated, therefore the 1st layer's lslices are shrank with the Elephant foot compensation value.
|
||
// Store the uncompensated value there.
|
||
//大象脚已经得到补偿，因此第一层的切片缩小了大象脚补偿值。
|
||
//将未补偿的价值存储在那里。
|
||
assert(m_layers.front()->id() == 0);
|
||
//BBS: sort the lslices_1st_layer according to shortest path before saving
|
||
//Otherwise the travel of first layer would be mess.
|
||
//BBS：保存前按最短路径对lslices_1st_layer进行排序
|
||
//否则，第一层的旅行会一团糟。
|
||
Points ordering_points;
|
||
ordering_points.reserve(lslices_1st_layer.size());
|
||
for (const ExPolygon& ex : lslices_1st_layer)
|
||
ordering_points.push_back(ex.contour.first_point());
|
||
std::vector<Points::size_type> order = chain_points(ordering_points);
|
||
ExPolygons lslices_1st_layer_sorted;
|
||
lslices_1st_layer_sorted.reserve(lslices_1st_layer.size());
|
||
for (size_t i : order)
|
||
lslices_1st_layer_sorted.emplace_back(std::move(lslices_1st_layer[i]));
|
||
|
||
m_layers.front()->lslices = std::move(lslices_1st_layer_sorted);
|
||
}
|
||
}
|
||
|
||
m_print->throw_if_canceled();
|
||
BOOST_LOG_TRIVIAL(debug) << "Slicing volumes - make_slices in parallel - end";
|
||
}
|
||
|
||
//BBS: this function is used to offset contour and holes of expolygons seperately by different value
|
||
ExPolygons PrintObject::_shrink_contour_holes(double contour_delta, double hole_delta, const ExPolygons& polys) const
|
||
{
|
||
ExPolygons new_ex_polys;
|
||
for (const ExPolygon& ex_poly : polys) {
|
||
Polygons contours;
|
||
Polygons holes;
|
||
//BBS: modify hole
|
||
for (const Polygon& hole : ex_poly.holes) {
|
||
if (hole_delta != 0) {
|
||
for (Polygon& newHole : offset(hole, -hole_delta)) {
|
||
newHole.make_counter_clockwise();
|
||
holes.emplace_back(std::move(newHole));
|
||
}
|
||
} else {
|
||
holes.push_back(hole);
|
||
holes.back().make_counter_clockwise();
|
||
}
|
||
}
|
||
//BBS: modify contour
|
||
if (contour_delta != 0) {
|
||
Polygons new_contours = offset(ex_poly.contour, contour_delta);
|
||
if (new_contours.size() == 0)
|
||
continue;
|
||
contours.insert(contours.end(), std::make_move_iterator(new_contours.begin()), std::make_move_iterator(new_contours.end()));
|
||
} else {
|
||
contours.push_back(ex_poly.contour);
|
||
}
|
||
ExPolygons temp = diff_ex(union_(contours), union_(holes));
|
||
new_ex_polys.insert(new_ex_polys.end(), std::make_move_iterator(temp.begin()), std::make_move_iterator(temp.end()));
|
||
}
|
||
return union_ex(new_ex_polys);
|
||
}
|
||
|
||
std::vector<Polygons> PrintObject::slice_support_volumes(const ModelVolumeType model_volume_type) const
|
||
{
|
||
auto it_volume = this->model_object()->volumes.begin();
|
||
auto it_volume_end = this->model_object()->volumes.end();
|
||
for (; it_volume != it_volume_end && (*it_volume)->type() != model_volume_type; ++ it_volume) ;
|
||
std::vector<Polygons> slices;
|
||
if (it_volume != it_volume_end) {
|
||
// Found at least a single support volume of model_volume_type.
|
||
std::vector<float> zs = zs_from_layers(this->layers());
|
||
std::vector<char> merge_layers;
|
||
bool merge = false;
|
||
const Print *print = this->print();
|
||
auto throw_on_cancel_callback = std::function<void()>([print](){ print->throw_if_canceled(); });
|
||
MeshSlicingParamsEx params;
|
||
params.trafo = this->trafo_centered();
|
||
for (; it_volume != it_volume_end; ++ it_volume)
|
||
if ((*it_volume)->type() == model_volume_type) {
|
||
std::vector<ExPolygons> slices2 = slice_volume(*(*it_volume), zs, params, throw_on_cancel_callback);
|
||
if (slices.empty()) {
|
||
slices.reserve(slices2.size());
|
||
for (ExPolygons &src : slices2)
|
||
slices.emplace_back(to_polygons(std::move(src)));
|
||
} else if (!slices2.empty()) {
|
||
if (merge_layers.empty())
|
||
merge_layers.assign(zs.size(), false);
|
||
for (size_t i = 0; i < zs.size(); ++ i) {
|
||
if (slices[i].empty())
|
||
slices[i] = to_polygons(std::move(slices2[i]));
|
||
else if (! slices2[i].empty()) {
|
||
append(slices[i], to_polygons(std::move(slices2[i])));
|
||
merge_layers[i] = true;
|
||
merge = true;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
if (merge) {
|
||
std::vector<Polygons*> to_merge;
|
||
to_merge.reserve(zs.size());
|
||
for (size_t i = 0; i < zs.size(); ++ i)
|
||
if (merge_layers[i])
|
||
to_merge.emplace_back(&slices[i]);
|
||
tbb::parallel_for(
|
||
tbb::blocked_range<size_t>(0, to_merge.size()),
|
||
[&to_merge](const tbb::blocked_range<size_t> &range) {
|
||
for (size_t i = range.begin(); i < range.end(); ++ i)
|
||
*to_merge[i] = union_(*to_merge[i]);
|
||
});
|
||
}
|
||
}
|
||
return slices;
|
||
}
|
||
|
||
} // namespace Slic3r
|