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#ifndef slic3r_Layer_hpp_
#define slic3r_Layer_hpp_
#include "libslic3r.h"
#include "Flow.hpp"
#include "SurfaceCollection.hpp"
#include "ExtrusionEntityCollection.hpp"
#include "ExPolygonCollection.hpp"
namespace Slic3r {
class Layer;
class PrintRegion;
class PrintObject;
namespace FillAdaptive_Internal {
struct Octree;
};
class LayerRegion
{
public:
Layer* layer() { return m_layer; }
const Layer* layer() const { return m_layer; }
PrintRegion* region() { return m_region; }
const PrintRegion* region() const { return m_region; }
// collection of surfaces generated by slicing the original geometry
// divided by type top/bottom/internal
SurfaceCollection slices;
// collection of extrusion paths/loops filling gaps
// These fills are generated by the perimeter generator.
// They are not printed on their own, but they are copied to this->fills during infill generation.
ExtrusionEntityCollection thin_fills;
// Unspecified fill polygons, used for overhang detection ("ensure vertical wall thickness feature")
// and for re-starting of infills.
ExPolygons fill_expolygons;
// collection of surfaces for infill generation
SurfaceCollection fill_surfaces;
// collection of expolygons representing the bridged areas (thus not
// needing support material)
Polygons bridged;
// collection of polylines representing the unsupported bridge edges
Polylines unsupported_bridge_edges;
// ordered collection of extrusion paths/loops to build all perimeters
// (this collection contains only ExtrusionEntityCollection objects)
ExtrusionEntityCollection perimeters;
// ordered collection of extrusion paths to fill surfaces
// (this collection contains only ExtrusionEntityCollection objects)
ExtrusionEntityCollection fills;
Flow flow(FlowRole role, bool bridge = false, double width = -1) const;
void slices_to_fill_surfaces_clipped();
void prepare_fill_surfaces();
void make_perimeters(const SurfaceCollection &slices, SurfaceCollection* fill_surfaces);
void process_external_surfaces(const Layer *lower_layer, const Polygons *lower_layer_covered);
double infill_area_threshold() const;
// Trim surfaces by trimming polygons. Used by the elephant foot compensation at the 1st layer.
void trim_surfaces(const Polygons &trimming_polygons);
// Single elephant foot compensation step, used by the elephant foor compensation at the 1st layer.
// 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.
void elephant_foot_compensation_step(const float elephant_foot_compensation_perimeter_step, const Polygons &trimming_polygons);
void export_region_slices_to_svg(const char *path) const;
void export_region_fill_surfaces_to_svg(const char *path) const;
// Export to "out/LayerRegion-name-%d.svg" with an increasing index with every export.
void export_region_slices_to_svg_debug(const char *name) const;
void export_region_fill_surfaces_to_svg_debug(const char *name) const;
// Is there any valid extrusion assigned to this LayerRegion?
bool has_extrusions() const { return ! this->perimeters.entities.empty() || ! this->fills.entities.empty(); }
protected:
friend class Layer;
LayerRegion(Layer *layer, PrintRegion *region) : m_layer(layer), m_region(region) {}
~LayerRegion() {}
private:
Layer *m_layer;
PrintRegion *m_region;
};
typedef std::vector<LayerRegion*> LayerRegionPtrs;
class Layer
{
public:
size_t id() const { return m_id; }
void set_id(size_t id) { m_id = id; }
PrintObject* object() { return m_object; }
const PrintObject* object() const { return m_object; }
Layer *upper_layer;
Layer *lower_layer;
bool slicing_errors;
coordf_t slice_z; // Z used for slicing in unscaled coordinates
coordf_t print_z; // Z used for printing in unscaled coordinates
coordf_t height; // layer height in unscaled coordinates
coordf_t bottom_z() const { return this->print_z - this->height; }
// Collection of expolygons generated by slicing the possibly multiple meshes of the source geometry
// (with possibly differing extruder ID and slicing parameters) and merged.
// For the first layer, if the ELephant foot compensation is applied, this lslice is uncompensated, therefore
// it includes the Elephant foot effect, thus it corresponds to the shape of the printed 1st layer.
// These lslices aka islands are chained by the shortest traverse distance and this traversal
// order will be applied by the G-code generator to the extrusions fitting into these lslices.
// These lslices are also used to detect overhangs and overlaps between successive layers, therefore it is important
// that the 1st lslice is not compensated by the Elephant foot compensation algorithm.
ExPolygons lslices;
std::vector<BoundingBox> lslices_bboxes;
size_t region_count() const { return m_regions.size(); }
const LayerRegion* get_region(int idx) const { return m_regions.at(idx); }
LayerRegion* get_region(int idx) { return m_regions[idx]; }
LayerRegion* add_region(PrintRegion* print_region);
const LayerRegionPtrs& regions() const { return m_regions; }
// Test whether whether there are any slices assigned to this layer.
bool empty() const;
void make_slices();
// Merge typed slices into untyped slices. This method is used to revert the effects of detect_surfaces_type() called for posPrepareInfill.
void merge_slices();
// Slices merged into islands, to be used by the elephant foot compensation to trim the individual surfaces with the shrunk merged slices.
ExPolygons merged(float offset) const;
template <class T> bool any_internal_region_slice_contains(const T &item) const {
for (const LayerRegion *layerm : m_regions) if (layerm->slices.any_internal_contains(item)) return true;
return false;
}
template <class T> bool any_bottom_region_slice_contains(const T &item) const {
for (const LayerRegion *layerm : m_regions) if (layerm->slices.any_bottom_contains(item)) return true;
return false;
}
void make_perimeters();
void make_fills() { this->make_fills(nullptr); };
void make_fills(FillAdaptive_Internal::Octree* adaptive_fill_octree);
void make_ironing();
void export_region_slices_to_svg(const char *path) const;
void export_region_fill_surfaces_to_svg(const char *path) const;
// Export to "out/LayerRegion-name-%d.svg" with an increasing index with every export.
void export_region_slices_to_svg_debug(const char *name) const;
void export_region_fill_surfaces_to_svg_debug(const char *name) const;
// Is there any valid extrusion assigned to this LayerRegion?
virtual bool has_extrusions() const { for (auto layerm : m_regions) if (layerm->has_extrusions()) return true; return false; }
protected:
friend class PrintObject;
Layer(size_t id, PrintObject *object, coordf_t height, coordf_t print_z, coordf_t slice_z) :
upper_layer(nullptr), lower_layer(nullptr), slicing_errors(false),
slice_z(slice_z), print_z(print_z), height(height),
m_id(id), m_object(object) {}
virtual ~Layer();
private:
// sequential number of layer, 0-based
size_t m_id;
PrintObject *m_object;
LayerRegionPtrs m_regions;
};
class SupportLayer : public Layer
{
public:
// Polygons covered by the supports: base, interface and contact areas.
// Used to suppress retraction if moving for a support extrusion over these support_islands.
ExPolygonCollection support_islands;
// Extrusion paths for the support base and for the support interface and contacts.
ExtrusionEntityCollection support_fills;
// Is there any valid extrusion assigned to this LayerRegion?
virtual bool has_extrusions() const { return ! support_fills.empty(); }
protected:
friend class PrintObject;
// The constructor has been made public to be able to insert additional support layers for the skirt or a wipe tower
// between the raft and the object first layer.
SupportLayer(size_t id, PrintObject *object, coordf_t height, coordf_t print_z, coordf_t slice_z) :
Layer(id, object, height, print_z, slice_z) {}
virtual ~SupportLayer() {}
};
}
#endif
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