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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"
#include "PolylineCollection.hpp"
namespace Slic3r {
class Layer;
class PrintRegion;
class PrintObject;
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 perimeter surfaces. This is a cached result of diff(slices, fill_surfaces).
// While not necessary, the memory consumption is meager and it speeds up calculation.
// The perimeter_surfaces keep the IDs of the slices (top/bottom/)
SurfaceCollection perimeter_surfaces;
// collection of expolygons representing the bridged areas (thus not
// needing support material)
Polygons bridged;
// collection of polylines representing the unsupported bridge edges
PolylineCollection 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);
double infill_area_threshold() const;
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
// collection of expolygons generated by slicing the original geometry;
// also known as 'islands' (all regions and surface types are merged here)
// The slices are chained by the shortest traverse distance and this traversal
// order will be recovered by the G-code generator.
ExPolygonCollection slices;
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; }
void make_slices();
void merge_slices();
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();
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.
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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