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New extrusion class: ExtrusionMultiPath

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This is similar to an ExtrusionLoop, but it is open.
It may contain multiple chained paths with differing parameters.
This allows one to have a hierarchy of paths, where the ExtrusionEntityCollection
will be chained by the G-code generator, but ExtrusionMultiPath will not.
This commit is contained in:
bubnikv 2017-01-19 13:35:55 +01:00
parent e6b441eea4
commit e016c4e423
13 changed files with 151 additions and 2 deletions
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49
xs/src/libslic3r/ExtrusionEntity.hpp
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@ -133,6 +133,55 @@ public:
typedef std::vector<ExtrusionPath> ExtrusionPaths;
// Single continuous extrusion path, possibly with varying extrusion thickness, extrusion height or bridging / non bridging.
class ExtrusionMultiPath : public ExtrusionEntity
{
public:
ExtrusionPaths paths;
ExtrusionMultiPath() {};
ExtrusionMultiPath(const ExtrusionPaths &paths) : paths(paths) {};
ExtrusionMultiPath(const ExtrusionPath &path) { this->paths.push_back(path); }
bool is_loop() const { return false; }
bool can_reverse() const { return true; }
ExtrusionMultiPath* clone() const { return new ExtrusionMultiPath(*this); }
void reverse();
Point first_point() const { return this->paths.front().polyline.points.front(); }
Point last_point() const { return this->paths.back().polyline.points.back(); }
virtual double length() const;
bool is_perimeter() const {
return this->paths.front().role == erPerimeter
|| this->paths.front().role == erExternalPerimeter
|| this->paths.front().role == erOverhangPerimeter;
}
bool is_infill() const {
return this->paths.front().role == erBridgeInfill
|| this->paths.front().role == erInternalInfill
|| this->paths.front().role == erSolidInfill
|| this->paths.front().role == erTopSolidInfill;
}
bool is_solid_infill() const {
return this->paths.front().role == erBridgeInfill
|| this->paths.front().role == erSolidInfill
|| this->paths.front().role == erTopSolidInfill;
}
// Produce a list of 2D polygons covered by the extruded paths, offsetted by the extrusion width.
// Increase the offset by scaled_epsilon to achieve an overlap, so a union will produce no gaps.
void polygons_covered_by_width(Polygons &out, const float scaled_epsilon) const;
// Produce a list of 2D polygons covered by the extruded paths, offsetted by the extrusion spacing.
// Increase the offset by scaled_epsilon to achieve an overlap, so a union will produce no gaps.
// Useful to calculate area of an infill, which has been really filled in by a 100% rectilinear infill.
void polygons_covered_by_spacing(Polygons &out, const float scaled_epsilon) const;
Polygons polygons_covered_by_width(const float scaled_epsilon = 0.f) const
{ Polygons out; this->polygons_covered_by_width(out, scaled_epsilon); return out; }
Polygons polygons_covered_by_spacing(const float scaled_epsilon = 0.f) const
{ Polygons out; this->polygons_covered_by_spacing(out, scaled_epsilon); return out; }
// Minimum volumetric velocity of this extrusion entity. Used by the constant nozzle pressure algorithm.
double min_mm3_per_mm() const;
Polyline as_polyline() const;
};
// Single continuous extrusion loop, possibly with varying extrusion thickness, extrusion height or bridging / non bridging.
class ExtrusionLoop : public ExtrusionEntity
{
public: