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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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56
xs/src/libslic3r/ExtrusionEntity.cpp
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@ -63,6 +63,62 @@ void ExtrusionPath::polygons_covered_by_spacing(Polygons &out, const float scale
polygons_append(out, offset(this->polyline, 0.5f * float(flow.scaled_spacing()) + scaled_epsilon));
}
void ExtrusionMultiPath::reverse()
{
for (ExtrusionPaths::iterator path = this->paths.begin(); path != this->paths.end(); ++path)
path->reverse();
std::reverse(this->paths.begin(), this->paths.end());
}
double ExtrusionMultiPath::length() const
{
double len = 0;
for (ExtrusionPaths::const_iterator path = this->paths.begin(); path != this->paths.end(); ++path)
len += path->polyline.length();
return len;
}
void ExtrusionMultiPath::polygons_covered_by_width(Polygons &out, const float scaled_epsilon) const
{
for (ExtrusionPaths::const_iterator path = this->paths.begin(); path != this->paths.end(); ++path)
path->polygons_covered_by_width(out, scaled_epsilon);
}
void ExtrusionMultiPath::polygons_covered_by_spacing(Polygons &out, const float scaled_epsilon) const
{
for (ExtrusionPaths::const_iterator path = this->paths.begin(); path != this->paths.end(); ++path)
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 (ExtrusionPaths::const_iterator path = this->paths.begin(); path != this->paths.end(); ++path)
min_mm3_per_mm = std::min(min_mm3_per_mm, path->mm3_per_mm);
return min_mm3_per_mm;
}
Polyline ExtrusionMultiPath::as_polyline() const
{
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;
Polyline out;
if (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()
{