88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
#ifndef FILLER_HPP
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#define FILLER_HPP
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#include "selection_boilerplate.hpp"
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namespace libnest2d { namespace selections {
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template<class RawShape>
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class _FillerSelection: public SelectionBoilerplate<RawShape> {
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using Base = SelectionBoilerplate<RawShape>;
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public:
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using typename Base::Item;
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using Config = int; //dummy
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private:
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using Base::packed_bins_;
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using typename Base::ItemGroup;
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using Container = ItemGroup;
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Container store_;
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public:
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void configure(const Config& /*config*/) { }
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template<class TPlacer, class TIterator,
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class TBin = typename PlacementStrategyLike<TPlacer>::BinType,
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class PConfig = typename PlacementStrategyLike<TPlacer>::Config>
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void packItems(TIterator first,
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TIterator last,
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TBin&& bin,
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PConfig&& pconfig = PConfig())
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{
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using Placer = PlacementStrategyLike<TPlacer>;
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store_.clear();
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auto total = last-first;
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store_.reserve(total);
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// TODO: support preloading
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packed_bins_.clear();
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packed_bins_.emplace_back();
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auto makeProgress = [this, &total](
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PlacementStrategyLike<TPlacer>& placer)
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{
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packed_bins_.back() = placer.getItems();
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#ifndef NDEBUG
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packed_bins_.back().insert(packed_bins_.back().end(),
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placer.getDebugItems().begin(),
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placer.getDebugItems().end());
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#endif
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this->progress_(--total);
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};
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std::copy(first, last, std::back_inserter(store_));
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auto sortfunc = [](Item& i1, Item& i2) {
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return i1.area() > i2.area();
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};
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this->template remove_unpackable_items<Placer>(store_, bin, pconfig);
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std::sort(store_.begin(), store_.end(), sortfunc);
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Placer placer(bin);
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placer.configure(pconfig);
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auto it = store_.begin();
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while(it != store_.end() && !this->stopcond_()) {
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if(!placer.pack(*it, {std::next(it), store_.end()})) {
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if(packed_bins_.back().empty()) ++it;
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placer.clearItems();
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packed_bins_.emplace_back();
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} else {
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makeProgress(placer);
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++it;
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}
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}
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}
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};
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}
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}
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#endif //BOTTOMLEFT_HPP
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