413 lines
15 KiB
C++
413 lines
15 KiB
C++
#include "ExtrusionEntity.hpp"
|
|
#include "ExtrusionEntityCollection.hpp"
|
|
#include "ExPolygon.hpp"
|
|
#include "ClipperUtils.hpp"
|
|
#include "Extruder.hpp"
|
|
#include "Flow.hpp"
|
|
#include <cmath>
|
|
#include <limits>
|
|
#include <sstream>
|
|
|
|
#define L(s) (s)
|
|
|
|
namespace Slic3r {
|
|
|
|
void ExtrusionPath::intersect_expolygons(const ExPolygons &collection, ExtrusionEntityCollection* retval) const
|
|
{
|
|
this->_inflate_collection(intersection_pl(Polylines{ polyline }, collection), retval);
|
|
}
|
|
|
|
void ExtrusionPath::subtract_expolygons(const ExPolygons &collection, ExtrusionEntityCollection* retval) const
|
|
{
|
|
this->_inflate_collection(diff_pl(Polylines{ this->polyline }, collection), retval);
|
|
}
|
|
|
|
void ExtrusionPath::clip_end(double distance)
|
|
{
|
|
this->polyline.clip_end(distance);
|
|
}
|
|
|
|
void ExtrusionPath::simplify(double tolerance)
|
|
{
|
|
this->polyline.simplify(tolerance);
|
|
}
|
|
|
|
void ExtrusionPath::simplify_by_fitting_arc(double tolerance)
|
|
{
|
|
this->polyline.simplify_by_fitting_arc(tolerance);
|
|
}
|
|
|
|
double ExtrusionPath::length() const
|
|
{
|
|
return this->polyline.length();
|
|
}
|
|
|
|
void ExtrusionPath::_inflate_collection(const Polylines &polylines, ExtrusionEntityCollection* collection) const
|
|
{
|
|
for (const Polyline &polyline : polylines)
|
|
collection->entities.emplace_back(new ExtrusionPath(polyline, *this));
|
|
}
|
|
|
|
void ExtrusionPath::polygons_covered_by_width(Polygons &out, const float scaled_epsilon) const
|
|
{
|
|
polygons_append(out, offset(this->polyline, float(scale_(this->width/2)) + scaled_epsilon));
|
|
}
|
|
|
|
void ExtrusionPath::polygons_covered_by_spacing(Polygons &out, const float scaled_epsilon) const
|
|
{
|
|
// Instantiating the Flow class to get the line spacing.
|
|
// Don't know the nozzle diameter, setting to zero. It shall not matter it shall be optimized out by the compiler.
|
|
bool bridge = is_bridge(this->role());
|
|
assert(! bridge || this->width == this->height);
|
|
auto flow = bridge ? Flow::bridging_flow(this->width, 0.f) : Flow(this->width, this->height, 0.f);
|
|
polygons_append(out, offset(this->polyline, 0.5f * float(flow.scaled_spacing()) + scaled_epsilon));
|
|
}
|
|
|
|
void ExtrusionMultiPath::reverse()
|
|
{
|
|
for (ExtrusionPath &path : this->paths)
|
|
path.reverse();
|
|
std::reverse(this->paths.begin(), this->paths.end());
|
|
}
|
|
|
|
double ExtrusionMultiPath::length() const
|
|
{
|
|
double len = 0;
|
|
for (const ExtrusionPath &path : this->paths)
|
|
len += path.polyline.length();
|
|
return len;
|
|
}
|
|
|
|
void ExtrusionMultiPath::polygons_covered_by_width(Polygons &out, const float scaled_epsilon) const
|
|
{
|
|
for (const ExtrusionPath &path : this->paths)
|
|
path.polygons_covered_by_width(out, scaled_epsilon);
|
|
}
|
|
|
|
void ExtrusionMultiPath::polygons_covered_by_spacing(Polygons &out, const float scaled_epsilon) const
|
|
{
|
|
for (const ExtrusionPath &path : this->paths)
|
|
path.polygons_covered_by_spacing(out, scaled_epsilon);
|
|
}
|
|
|
|
double ExtrusionMultiPath::min_mm3_per_mm() const
|
|
{
|
|
double min_mm3_per_mm = std::numeric_limits<double>::max();
|
|
for (const ExtrusionPath &path : this->paths)
|
|
min_mm3_per_mm = std::min(min_mm3_per_mm, path.mm3_per_mm);
|
|
return min_mm3_per_mm;
|
|
}
|
|
|
|
Polyline ExtrusionMultiPath::as_polyline() const
|
|
{
|
|
Polyline out;
|
|
if (! paths.empty()) {
|
|
size_t len = 0;
|
|
for (size_t i_path = 0; i_path < paths.size(); ++ i_path) {
|
|
assert(! paths[i_path].polyline.points.empty());
|
|
assert(i_path == 0 || paths[i_path - 1].polyline.points.back() == paths[i_path].polyline.points.front());
|
|
len += paths[i_path].polyline.points.size();
|
|
}
|
|
// The connecting points between the segments are equal.
|
|
len -= paths.size() - 1;
|
|
assert(len > 0);
|
|
out.points.reserve(len);
|
|
out.points.push_back(paths.front().polyline.points.front());
|
|
for (size_t i_path = 0; i_path < paths.size(); ++ i_path)
|
|
out.points.insert(out.points.end(), paths[i_path].polyline.points.begin() + 1, paths[i_path].polyline.points.end());
|
|
}
|
|
return out;
|
|
}
|
|
|
|
bool ExtrusionLoop::make_clockwise()
|
|
{
|
|
bool was_ccw = this->polygon().is_counter_clockwise();
|
|
if (was_ccw) this->reverse();
|
|
return was_ccw;
|
|
}
|
|
|
|
bool ExtrusionLoop::make_counter_clockwise()
|
|
{
|
|
bool was_cw = this->polygon().is_clockwise();
|
|
if (was_cw) this->reverse();
|
|
return was_cw;
|
|
}
|
|
|
|
void ExtrusionLoop::reverse()
|
|
{
|
|
for (ExtrusionPath &path : this->paths)
|
|
path.reverse();
|
|
std::reverse(this->paths.begin(), this->paths.end());
|
|
}
|
|
|
|
Polygon ExtrusionLoop::polygon() const
|
|
{
|
|
Polygon polygon;
|
|
for (const ExtrusionPath &path : this->paths) {
|
|
// for each polyline, append all points except the last one (because it coincides with the first one of the next polyline)
|
|
polygon.points.insert(polygon.points.end(), path.polyline.points.begin(), path.polyline.points.end()-1);
|
|
}
|
|
return polygon;
|
|
}
|
|
|
|
double ExtrusionLoop::length() const
|
|
{
|
|
double len = 0;
|
|
for (const ExtrusionPath &path : this->paths)
|
|
len += path.polyline.length();
|
|
return len;
|
|
}
|
|
|
|
bool ExtrusionLoop::split_at_vertex(const Point &point, const double scaled_epsilon)
|
|
{
|
|
for (ExtrusionPaths::iterator path = this->paths.begin(); path != this->paths.end(); ++path) {
|
|
if (int idx = path->polyline.find_point(point, scaled_epsilon); idx != -1) {
|
|
if (this->paths.size() == 1) {
|
|
// just change the order of points
|
|
Polyline p1, p2;
|
|
path->polyline.split_at_index(idx, &p1, &p2);
|
|
if (p1.is_valid() && p2.is_valid()) {
|
|
p2.append(std::move(p1));
|
|
std::swap(path->polyline.points, p2.points);
|
|
std::swap(path->polyline.fitting_result, p2.fitting_result);
|
|
}
|
|
} else {
|
|
// new paths list starts with the second half of current path
|
|
ExtrusionPaths new_paths;
|
|
Polyline p1, p2;
|
|
path->polyline.split_at_index(idx, &p1, &p2);
|
|
new_paths.reserve(this->paths.size() + 1);
|
|
{
|
|
ExtrusionPath p = *path;
|
|
std::swap(p.polyline.points, p2.points);
|
|
std::swap(p.polyline.fitting_result, p2.fitting_result);
|
|
if (p.polyline.is_valid()) new_paths.push_back(p);
|
|
}
|
|
|
|
// then we add all paths until the end of current path list
|
|
new_paths.insert(new_paths.end(), path+1, this->paths.end()); // not including this path
|
|
|
|
// then we add all paths since the beginning of current list up to the previous one
|
|
new_paths.insert(new_paths.end(), this->paths.begin(), path); // not including this path
|
|
|
|
// finally we add the first half of current path
|
|
{
|
|
ExtrusionPath p = *path;
|
|
std::swap(p.polyline.points, p1.points);
|
|
std::swap(p.polyline.fitting_result, p1.fitting_result);
|
|
if (p.polyline.is_valid()) new_paths.push_back(p);
|
|
}
|
|
// we can now override the old path list with the new one and stop looping
|
|
std::swap(this->paths, new_paths);
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
ExtrusionLoop::ClosestPathPoint ExtrusionLoop::get_closest_path_and_point(const Point &point, bool prefer_non_overhang) const
|
|
{
|
|
// Find the closest path and closest point belonging to that path. Avoid overhangs, if asked for.
|
|
ClosestPathPoint out{0, 0};
|
|
double min2 = std::numeric_limits<double>::max();
|
|
ClosestPathPoint best_non_overhang{0, 0};
|
|
double min2_non_overhang = std::numeric_limits<double>::max();
|
|
for (const ExtrusionPath &path : this->paths) {
|
|
std::pair<int, Point> foot_pt_ = foot_pt(path.polyline.points, point);
|
|
double d2 = (foot_pt_.second - point).cast<double>().squaredNorm();
|
|
if (d2 < min2) {
|
|
out.foot_pt = foot_pt_.second;
|
|
out.path_idx = &path - &this->paths.front();
|
|
out.segment_idx = foot_pt_.first;
|
|
min2 = d2;
|
|
}
|
|
if (prefer_non_overhang && !is_bridge(path.role()) && d2 < min2_non_overhang) {
|
|
best_non_overhang.foot_pt = foot_pt_.second;
|
|
best_non_overhang.path_idx = &path - &this->paths.front();
|
|
best_non_overhang.segment_idx = foot_pt_.first;
|
|
min2_non_overhang = d2;
|
|
}
|
|
}
|
|
if (prefer_non_overhang && min2_non_overhang != std::numeric_limits<double>::max())
|
|
// Only apply the non-overhang point if there is one.
|
|
out = best_non_overhang;
|
|
return out;
|
|
}
|
|
|
|
// Splitting an extrusion loop, possibly made of multiple segments, some of the segments may be bridging.
|
|
void ExtrusionLoop::split_at(const Point &point, bool prefer_non_overhang, const double scaled_epsilon)
|
|
{
|
|
if (this->paths.empty())
|
|
return;
|
|
|
|
auto [path_idx, segment_idx, p] = get_closest_path_and_point(point, prefer_non_overhang);
|
|
|
|
// Snap p to start or end of segment_idx if closer than scaled_epsilon.
|
|
{
|
|
const Point *p1 = this->paths[path_idx].polyline.points.data() + segment_idx;
|
|
const Point *p2 = p1;
|
|
++p2;
|
|
double d2_1 = (point - *p1).cast<double>().squaredNorm();
|
|
double d2_2 = (point - *p2).cast<double>().squaredNorm();
|
|
const double thr2 = scaled_epsilon * scaled_epsilon;
|
|
if (d2_1 < d2_2) {
|
|
if (d2_1 < thr2) p = *p1;
|
|
} else {
|
|
if (d2_2 < thr2) p = *p2;
|
|
}
|
|
}
|
|
|
|
// now split path_idx in two parts
|
|
const ExtrusionPath &path = this->paths[path_idx];
|
|
ExtrusionPath p1(path.overhang_degree, path.curve_degree, path.role(), path.mm3_per_mm, path.width, path.height);
|
|
ExtrusionPath p2(path.overhang_degree, path.curve_degree, path.role(), path.mm3_per_mm, path.width, path.height);
|
|
path.polyline.split_at(p, &p1.polyline, &p2.polyline);
|
|
|
|
if (this->paths.size() == 1) {
|
|
if (!p1.polyline.is_valid()) {
|
|
std::swap(this->paths.front().polyline.points, p2.polyline.points);
|
|
std::swap(this->paths.front().polyline.fitting_result, p2.polyline.fitting_result);
|
|
}
|
|
else if (!p2.polyline.is_valid()) {
|
|
std::swap(this->paths.front().polyline.points, p1.polyline.points);
|
|
std::swap(this->paths.front().polyline.fitting_result, p1.polyline.fitting_result);
|
|
}
|
|
else {
|
|
p2.polyline.append(std::move(p1.polyline));
|
|
std::swap(this->paths.front().polyline.points, p2.polyline.points);
|
|
std::swap(this->paths.front().polyline.fitting_result, p2.polyline.fitting_result);
|
|
}
|
|
} else {
|
|
// install the two paths
|
|
this->paths.erase(this->paths.begin() + path_idx);
|
|
if (p2.polyline.is_valid()) this->paths.insert(this->paths.begin() + path_idx, p2);
|
|
if (p1.polyline.is_valid()) this->paths.insert(this->paths.begin() + path_idx, p1);
|
|
}
|
|
|
|
// split at the new vertex
|
|
this->split_at_vertex(p);
|
|
}
|
|
|
|
void ExtrusionLoop::clip_end(double distance, ExtrusionPaths* paths) const
|
|
{
|
|
*paths = this->paths;
|
|
|
|
while (distance > 0 && !paths->empty()) {
|
|
ExtrusionPath &last = paths->back();
|
|
double len = last.length();
|
|
if (len <= distance) {
|
|
paths->pop_back();
|
|
distance -= len;
|
|
} else {
|
|
last.polyline.clip_end(distance);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ExtrusionLoop::has_overhang_point(const Point &point) const
|
|
{
|
|
for (const ExtrusionPath &path : this->paths) {
|
|
int pos = path.polyline.find_point(point);
|
|
if (pos != -1) {
|
|
// point belongs to this path
|
|
// we consider it overhang only if it's not an endpoint
|
|
return (is_bridge(path.role()) && pos > 0 && pos != (int)(path.polyline.points.size())-1);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void ExtrusionLoop::polygons_covered_by_width(Polygons &out, const float scaled_epsilon) const
|
|
{
|
|
for (const ExtrusionPath &path : this->paths)
|
|
path.polygons_covered_by_width(out, scaled_epsilon);
|
|
}
|
|
|
|
void ExtrusionLoop::polygons_covered_by_spacing(Polygons &out, const float scaled_epsilon) const
|
|
{
|
|
for (const ExtrusionPath &path : this->paths)
|
|
path.polygons_covered_by_spacing(out, scaled_epsilon);
|
|
}
|
|
|
|
double ExtrusionLoop::min_mm3_per_mm() const
|
|
{
|
|
double min_mm3_per_mm = std::numeric_limits<double>::max();
|
|
for (const ExtrusionPath &path : this->paths)
|
|
min_mm3_per_mm = std::min(min_mm3_per_mm, path.mm3_per_mm);
|
|
return min_mm3_per_mm;
|
|
}
|
|
|
|
|
|
std::string ExtrusionEntity::role_to_string(ExtrusionRole role)
|
|
{
|
|
switch (role) {
|
|
case erNone : return L("Undefined");
|
|
case erPerimeter : return L("Inner wall");
|
|
case erExternalPerimeter : return L("Outer wall");
|
|
case erOverhangPerimeter : return L("Overhang wall");
|
|
case erInternalInfill : return L("Sparse infill");
|
|
case erSolidInfill : return L("Internal solid infill");
|
|
case erTopSolidInfill : return L("Top surface");
|
|
case erBottomSurface : return L("Bottom surface");
|
|
case erIroning : return L("Ironing");
|
|
case erBridgeInfill : return L("Bridge");
|
|
case erGapFill : return L("Gap infill");
|
|
case erSkirt : return ("Skirt");
|
|
case erBrim : return ("Brim");
|
|
case erSupportMaterial : return L("Support");
|
|
case erSupportMaterialInterface : return L("Support interface");
|
|
case erSupportTransition : return L("Support transition");
|
|
case erWipeTower : return L("Prime tower");
|
|
case erCustom : return L("Custom");
|
|
case erMixed : return L("Multiple");
|
|
default : assert(false);
|
|
}
|
|
return "";
|
|
}
|
|
|
|
ExtrusionRole ExtrusionEntity::string_to_role(const std::string_view role)
|
|
{
|
|
if (role == L("Inner wall"))
|
|
return erPerimeter;
|
|
else if (role == L("Outer wall"))
|
|
return erExternalPerimeter;
|
|
else if (role == L("Overhang wall"))
|
|
return erOverhangPerimeter;
|
|
else if (role == L("Sparse infill"))
|
|
return erInternalInfill;
|
|
else if (role == L("Internal solid infill"))
|
|
return erSolidInfill;
|
|
else if (role == L("Top surface"))
|
|
return erTopSolidInfill;
|
|
else if (role == L("Bottom surface"))
|
|
return erBottomSurface;
|
|
else if (role == L("Ironing"))
|
|
return erIroning;
|
|
else if (role == L("Bridge"))
|
|
return erBridgeInfill;
|
|
else if (role == L("Gap infill"))
|
|
return erGapFill;
|
|
else if (role == ("Skirt"))
|
|
return erSkirt;
|
|
else if (role == ("Brim"))
|
|
return erBrim;
|
|
else if (role == L("Support"))
|
|
return erSupportMaterial;
|
|
else if (role == L("Support interface"))
|
|
return erSupportMaterialInterface;
|
|
else if (role == L("Support transition"))
|
|
return erSupportTransition;
|
|
else if (role == L("Prime tower"))
|
|
return erWipeTower;
|
|
else if (role == L("Custom"))
|
|
return erCustom;
|
|
else if (role == L("Multiple"))
|
|
return erMixed;
|
|
else
|
|
return erNone;
|
|
}
|
|
|
|
}
|