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Ported Slic3r::Polyline::Collection

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This commit is contained in:
Alessandro Ranellucci 2013-08-30 00:06:10 +02:00
parent fb82de9aaf
commit 1cfdf7e955
12 changed files with 194 additions and 46 deletions
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46
xs/src/PolylineCollection.cpp Normal file
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#include "PolylineCollection.hpp"
namespace Slic3r {
PolylineCollection*
PolylineCollection::chained_path(bool no_reverse) const
{
if (this->polylines.empty()) {
return new PolylineCollection ();
}
return this->chained_path_from(this->polylines.front().first_point(), no_reverse);
}
PolylineCollection*
PolylineCollection::chained_path_from(const Point* start_near, bool no_reverse) const
{
PolylineCollection* retval = new PolylineCollection;
Polylines my_paths = this->polylines;
Points endpoints;
for (Polylines::const_iterator it = my_paths.begin(); it != my_paths.end(); ++it) {
endpoints.push_back(*(*it).first_point());
if (no_reverse) {
endpoints.push_back(*(*it).first_point());
} else {
endpoints.push_back(*(*it).last_point());
}
}
while (!my_paths.empty()) {
// find nearest point
int start_index = start_near->nearest_point_index(endpoints);
int path_index = start_index/2;
if (start_index % 2 && !no_reverse) {
my_paths.at(path_index).reverse();
}
retval->polylines.push_back(my_paths.at(path_index));
my_paths.erase(my_paths.begin() + path_index);
endpoints.erase(endpoints.begin() + 2*path_index, endpoints.begin() + 2*path_index + 2);
start_near = retval->polylines.back().last_point();
}
return retval;
}
}