Initial release

deps_src/libnest2d/include/libnest2d/libnest2d.hpp

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+#ifndef LIBNEST2D_HPP
+#define LIBNEST2D_HPP
+
+// The type of backend should be set conditionally by the cmake configuriation
+// for now we set it statically to clipper backend
+#ifdef LIBNEST2D_GEOMETRIES_clipper
+#include <libnest2d/backends/clipper/geometries.hpp>
+#endif
+
+#ifdef LIBNEST2D_GEOMETRIES_libslic3r
+#include <libnest2d/backends/libslic3r/geometries.hpp>
+#endif
+
+#ifdef LIBNEST2D_OPTIMIZER_nlopt
+// We include the stock optimizers for local and global optimization
+#include <libnest2d/optimizers/nlopt/subplex.hpp>     // Local subplex for NfpPlacer
+#include <libnest2d/optimizers/nlopt/genetic.hpp>     // Genetic for min. bounding box
+#endif
+
+#include <libnest2d/nester.hpp>
+#include <libnest2d/placers/bottomleftplacer.hpp>
+#include <libnest2d/placers/nfpplacer.hpp>
+#include <libnest2d/selections/firstfit.hpp>
+#include <libnest2d/selections/filler.hpp>
+#include <libnest2d/selections/djd_heuristic.hpp>
+
+namespace libnest2d {
+
+using Point = PointImpl;
+using Coord = TCoord<PointImpl>;
+using Box = _Box<PointImpl>;
+using Segment = _Segment<PointImpl>;
+using Circle = _Circle<PointImpl>;
+using MultiPolygon = TMultiShape<PolygonImpl>; 
+
+using Item = _Item<PolygonImpl>;
+using Rectangle = _Rectangle<PolygonImpl>;
+using PackGroup = _PackGroup<PolygonImpl>;
+
+using FillerSelection = selections::_FillerSelection<PolygonImpl>;
+using FirstFitSelection = selections::_FirstFitSelection<PolygonImpl>;
+using DJDHeuristic  = selections::_DJDHeuristic<PolygonImpl>;
+
+template<class Bin> // Generic placer for arbitrary bin types
+using _NfpPlacer = placers::_NofitPolyPlacer<PolygonImpl, Bin>;
+
+// NfpPlacer is with Box bin
+using NfpPlacer = _NfpPlacer<Box>;
+
+// This supports only box shaped bins
+using BottomLeftPlacer = placers::_BottomLeftPlacer<PolygonImpl>;
+
+#ifdef LIBNEST2D_STATIC
+
+extern template class _Nester<NfpPlacer, FirstFitSelection>;
+extern template class _Nester<BottomLeftPlacer, FirstFitSelection>;
+extern template std::size_t _Nester<NfpPlacer, FirstFitSelection>::execute(
+        std::vector<Item>::iterator, std::vector<Item>::iterator);
+extern template std::size_t _Nester<BottomLeftPlacer, FirstFitSelection>::execute(
+        std::vector<Item>::iterator, std::vector<Item>::iterator);
+
+#endif
+
+template<class Placer = NfpPlacer, class Selector = FirstFitSelection>
+struct NestConfig {
+    typename Placer::Config placer_config;
+    typename Selector::Config selector_config;
+    using Placement = typename Placer::Config;
+    using Selection = typename Selector::Config;
+    
+    NestConfig() = default;
+    NestConfig(const typename Placer::Config &cfg)   : placer_config{cfg} {}
+    NestConfig(const typename Selector::Config &cfg) : selector_config{cfg} {}
+    NestConfig(const typename Placer::Config &  pcfg,
+               const typename Selector::Config &scfg)
+        : placer_config{pcfg}, selector_config{scfg} {}
+};
+
+struct NestControl {
+    ProgressFunction progressfn;
+    StopCondition stopcond = []{ return false; };
+    
+    NestControl() = default;
+    NestControl(ProgressFunction pr) : progressfn{std::move(pr)} {}
+    NestControl(StopCondition sc) : stopcond{std::move(sc)} {}
+    NestControl(ProgressFunction pr, StopCondition sc)
+        : progressfn{std::move(pr)}, stopcond{std::move(sc)}
+    {}
+};
+
+template<class Placer = NfpPlacer,
+         class Selector = FirstFitSelection,
+         class Iterator = std::vector<Item>::iterator>
+std::size_t nest(Iterator from, Iterator to,
+                 const typename Placer::BinType & bin,
+                 Coord dist = 0,
+                 const NestConfig<Placer, Selector> &cfg = {},
+                 NestControl ctl = {})
+{
+    _Nester<Placer, Selector> nester{bin, dist, cfg.placer_config, cfg.selector_config};
+    if(ctl.progressfn) nester.progressIndicator(ctl.progressfn);
+    if(ctl.stopcond) nester.stopCondition(ctl.stopcond);
+    return nester.execute(from, to);
+}
+
+#ifdef LIBNEST2D_STATIC
+
+extern template class _Nester<NfpPlacer, FirstFitSelection>;
+extern template class _Nester<BottomLeftPlacer, FirstFitSelection>;
+extern template std::size_t nest(std::vector<Item>::iterator from,
+                                 std::vector<Item>::iterator to,
+                                 const Box & bin,
+                                 Coord dist,
+                                 const NestConfig<NfpPlacer, FirstFitSelection> &cfg,
+                                 NestControl ctl);
+extern template std::size_t nest(std::vector<Item>::iterator from,
+                                 std::vector<Item>::iterator to,
+                                 const Box & bin,
+                                 Coord dist,
+                                 const NestConfig<BottomLeftPlacer, FirstFitSelection> &cfg,
+                                 NestControl ctl);
+
+#endif
+
+template<class Placer = NfpPlacer,
+         class Selector = FirstFitSelection,
+         class Container = std::vector<Item>>
+std::size_t nest(Container&& cont,
+                 const typename Placer::BinType & bin,
+                 Coord dist = 0,
+                 const NestConfig<Placer, Selector> &cfg = {},
+                 NestControl ctl = {})
+{
+    return nest<Placer, Selector>(cont.begin(), cont.end(), bin, dist, cfg, ctl);
+}
+
+template<class T = double> enable_if_t<std::is_arithmetic<T>::value, TCoord<PointImpl>> mm(T val = T(1)) 
+{
+    return TCoord<PointImpl>(val * CoordType<PointImpl>::MM_IN_COORDS);
+}
+
+}
+
+#endif // LIBNEST2D_HPP