240 lines
11 KiB
C++
240 lines
11 KiB
C++
#ifndef slic3r_Layer_hpp_
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#define slic3r_Layer_hpp_
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#include "libslic3r.h"
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#include "Flow.hpp"
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#include "SurfaceCollection.hpp"
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#include "ExtrusionEntityCollection.hpp"
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namespace Slic3r {
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class ExPolygon;
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using ExPolygons = std::vector<ExPolygon>;
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class Layer;
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using LayerPtrs = std::vector<Layer*>;
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class LayerRegion;
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using LayerRegionPtrs = std::vector<LayerRegion*>;
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class PrintRegion;
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class PrintObject;
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namespace FillAdaptive {
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struct Octree;
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}
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namespace FillLightning {
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class Generator;
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};
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namespace FillLightning {
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class Generator;
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};
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class LayerRegion
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{
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public:
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Layer* layer() { return m_layer; }
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const Layer* layer() const { return m_layer; }
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const PrintRegion& region() const { return *m_region; }
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// collection of surfaces generated by slicing the original geometry
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// divided by type top/bottom/internal
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SurfaceCollection slices;
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// Backed up slices before they are split into top/bottom/internal.
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// Only backed up for multi-region layers or layers with elephant foot compensation.
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//FIXME Review whether not to simplify the code by keeping the raw_slices all the time.
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ExPolygons raw_slices;
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// collection of extrusion paths/loops filling gaps
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// These fills are generated by the perimeter generator.
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// They are not printed on their own, but they are copied to this->fills during infill generation.
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ExtrusionEntityCollection thin_fills;
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// Unspecified fill polygons, used for overhang detection ("ensure vertical wall thickness feature")
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// and for re-starting of infills.
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ExPolygons fill_expolygons;
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// collection of surfaces for infill generation
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SurfaceCollection fill_surfaces;
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// collection of expolygons representing the bridged areas (thus not
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// needing support material)
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// Polygons bridged;
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// collection of polylines representing the unsupported bridge edges
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Polylines unsupported_bridge_edges;
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// ordered collection of extrusion paths/loops to build all perimeters
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// (this collection contains only ExtrusionEntityCollection objects)
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ExtrusionEntityCollection perimeters;
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// ordered collection of extrusion paths to fill surfaces
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// (this collection contains only ExtrusionEntityCollection objects)
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ExtrusionEntityCollection fills;
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Flow flow(FlowRole role) const;
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Flow flow(FlowRole role, double layer_height) const;
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Flow bridging_flow(FlowRole role) const;
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void slices_to_fill_surfaces_clipped();
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void prepare_fill_surfaces();
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void make_perimeters(const SurfaceCollection &slices, SurfaceCollection* fill_surfaces);
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void process_external_surfaces(const Layer *lower_layer, const Polygons *lower_layer_covered);
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double infill_area_threshold() const;
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// Trim surfaces by trimming polygons. Used by the elephant foot compensation at the 1st layer.
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void trim_surfaces(const Polygons &trimming_polygons);
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// Single elephant foot compensation step, used by the elephant foor compensation at the 1st layer.
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// Trim surfaces by trimming polygons (shrunk by an elephant foot compensation step), but don't shrink narrow parts so much that no perimeter would fit.
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void elephant_foot_compensation_step(const float elephant_foot_compensation_perimeter_step, const Polygons &trimming_polygons);
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void export_region_slices_to_svg(const char *path) const;
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void export_region_fill_surfaces_to_svg(const char *path) const;
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// Export to "out/LayerRegion-name-%d.svg" with an increasing index with every export.
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void export_region_slices_to_svg_debug(const char *name) const;
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void export_region_fill_surfaces_to_svg_debug(const char *name) const;
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// Is there any valid extrusion assigned to this LayerRegion?
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bool has_extrusions() const { return ! this->perimeters.entities.empty() || ! this->fills.entities.empty(); }
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protected:
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friend class Layer;
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friend class PrintObject;
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LayerRegion(Layer *layer, const PrintRegion *region) : m_layer(layer), m_region(region) {}
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~LayerRegion() {}
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private:
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Layer *m_layer;
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const PrintRegion *m_region;
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};
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class Layer
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{
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public:
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// Sequential index of this layer in PrintObject::m_layers, offsetted by the number of raft layers.
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size_t id() const { return m_id; }
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void set_id(size_t id) { m_id = id; }
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PrintObject* object() { return m_object; }
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const PrintObject* object() const { return m_object; }
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Layer *upper_layer;
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Layer *lower_layer;
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bool slicing_errors;
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coordf_t slice_z; // Z used for slicing in unscaled coordinates
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coordf_t print_z; // Z used for printing in unscaled coordinates
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coordf_t height; // layer height in unscaled coordinates
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coordf_t bottom_z() const { return this->print_z - this->height; }
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// Collection of expolygons generated by slicing the possibly multiple meshes of the source geometry
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// (with possibly differing extruder ID and slicing parameters) and merged.
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// For the first layer, if the Elephant foot compensation is applied, this lslice is uncompensated, therefore
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// it includes the Elephant foot effect, thus it corresponds to the shape of the printed 1st layer.
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// These lslices aka islands are chained by the shortest traverse distance and this traversal
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// order will be applied by the G-code generator to the extrusions fitting into these lslices.
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// These lslices are also used to detect overhangs and overlaps between successive layers, therefore it is important
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// that the 1st lslice is not compensated by the Elephant foot compensation algorithm.
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ExPolygons lslices;
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std::vector<BoundingBox> lslices_bboxes;
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size_t region_count() const { return m_regions.size(); }
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const LayerRegion* get_region(int idx) const { return m_regions[idx]; }
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LayerRegion* get_region(int idx) { return m_regions[idx]; }
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LayerRegion* add_region(const PrintRegion *print_region);
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const LayerRegionPtrs& regions() const { return m_regions; }
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// Test whether whether there are any slices assigned to this layer.
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bool empty() const;
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void make_slices();
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// Backup and restore raw sliced regions if needed.
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//FIXME Review whether not to simplify the code by keeping the raw_slices all the time.
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void backup_untyped_slices();
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void restore_untyped_slices();
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// To improve robustness of detect_surfaces_type() when reslicing (working with typed slices), see GH issue #7442.
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void restore_untyped_slices_no_extra_perimeters();
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// Slices merged into islands, to be used by the elephant foot compensation to trim the individual surfaces with the shrunk merged slices.
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ExPolygons merged(float offset) const;
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template <class T> bool any_internal_region_slice_contains(const T &item) const {
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for (const LayerRegion *layerm : m_regions) if (layerm->slices.any_internal_contains(item)) return true;
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return false;
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}
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template <class T> bool any_bottom_region_slice_contains(const T &item) const {
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for (const LayerRegion *layerm : m_regions) if (layerm->slices.any_bottom_contains(item)) return true;
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return false;
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}
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void make_perimeters();
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// Phony version of make_fills() without parameters for Perl integration only.
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void make_fills() { this->make_fills(nullptr, nullptr, nullptr); }
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void make_fills(FillAdaptive::Octree* adaptive_fill_octree, FillAdaptive::Octree* support_fill_octree, FillLightning::Generator* lightning_generator);
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void make_ironing();
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void export_region_slices_to_svg(const char *path) const;
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void export_region_fill_surfaces_to_svg(const char *path) const;
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// Export to "out/LayerRegion-name-%d.svg" with an increasing index with every export.
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void export_region_slices_to_svg_debug(const char *name) const;
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void export_region_fill_surfaces_to_svg_debug(const char *name) const;
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// Is there any valid extrusion assigned to this LayerRegion?
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virtual bool has_extrusions() const { for (auto layerm : m_regions) if (layerm->has_extrusions()) return true; return false; }
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protected:
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friend class PrintObject;
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friend std::vector<Layer*> new_layers(PrintObject*, const std::vector<coordf_t>&);
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friend std::string fix_slicing_errors(LayerPtrs&, const std::function<void()>&);
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Layer(size_t id, PrintObject *object, coordf_t height, coordf_t print_z, coordf_t slice_z) :
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upper_layer(nullptr), lower_layer(nullptr), slicing_errors(false),
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slice_z(slice_z), print_z(print_z), height(height),
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m_id(id), m_object(object) {}
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virtual ~Layer();
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private:
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// Sequential index of layer, 0-based, offsetted by number of raft layers.
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size_t m_id;
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PrintObject *m_object;
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LayerRegionPtrs m_regions;
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};
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class SupportLayer : public Layer
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{
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public:
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// Polygons covered by the supports: base, interface and contact areas.
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// Used to suppress retraction if moving for a support extrusion over these support_islands.
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ExPolygons support_islands;
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// Slightly inflated bounding boxes of the above, for faster intersection query.
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std::vector<BoundingBox> support_islands_bboxes;
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// Extrusion paths for the support base and for the support interface and contacts.
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ExtrusionEntityCollection support_fills;
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// Is there any valid extrusion assigned to this LayerRegion?
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virtual bool has_extrusions() const { return ! support_fills.empty(); }
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// Zero based index of an interface layer, used for alternating direction of interface / contact layers.
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size_t interface_id() const { return m_interface_id; }
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protected:
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friend class PrintObject;
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// The constructor has been made public to be able to insert additional support layers for the skirt or a wipe tower
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// between the raft and the object first layer.
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SupportLayer(size_t id, size_t interface_id, PrintObject *object, coordf_t height, coordf_t print_z, coordf_t slice_z) :
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Layer(id, object, height, print_z, slice_z), m_interface_id(interface_id) {}
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virtual ~SupportLayer() = default;
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size_t m_interface_id;
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};
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template<typename LayerContainer>
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inline std::vector<float> zs_from_layers(const LayerContainer &layers)
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{
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std::vector<float> zs;
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zs.reserve(layers.size());
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for (const Layer *l : layers)
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zs.emplace_back((float)l->slice_z);
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return zs;
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}
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extern BoundingBox get_extents(const LayerRegion &layer_region);
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extern BoundingBox get_extents(const LayerRegionPtrs &layer_regions);
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}
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#endif
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