58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
#include "PolylineCollection.hpp"
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namespace Slic3r {
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void
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PolylineCollection::chained_path(PolylineCollection* retval, bool no_reverse) const
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{
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if (this->polylines.empty()) return;
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this->chained_path_from(this->polylines.front().first_point(), retval, no_reverse);
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}
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void
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PolylineCollection::chained_path_from(Point start_near, PolylineCollection* retval, bool no_reverse) const
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{
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Polylines my_paths = this->polylines;
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Points endpoints;
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for (Polylines::const_iterator it = my_paths.begin(); it != my_paths.end(); ++it) {
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endpoints.push_back(it->first_point());
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if (no_reverse) {
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endpoints.push_back(it->first_point());
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} else {
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endpoints.push_back(it->last_point());
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}
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}
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while (!my_paths.empty()) {
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// find nearest point
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int start_index = start_near.nearest_point_index(endpoints);
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int path_index = start_index/2;
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if (start_index % 2 && !no_reverse) {
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my_paths.at(path_index).reverse();
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}
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retval->polylines.push_back(my_paths.at(path_index));
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my_paths.erase(my_paths.begin() + path_index);
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endpoints.erase(endpoints.begin() + 2*path_index, endpoints.begin() + 2*path_index + 2);
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start_near = retval->polylines.back().last_point();
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}
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}
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Point
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PolylineCollection::leftmost_point() const
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{
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if (this->polylines.empty()) CONFESS("leftmost_point() called on empty PolylineCollection");
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Point p = this->polylines.front().leftmost_point();
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for (Polylines::const_iterator it = this->polylines.begin() + 1; it != this->polylines.end(); ++it) {
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Point p2 = it->leftmost_point();
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if (p2.x < p.x) p = p2;
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}
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return p;
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}
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#ifdef SLIC3RXS
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REGISTER_CLASS(PolylineCollection, "Polyline::Collection");
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#endif
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}
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