QIDISlicer1.0.0

src/libslic3r/Fill/Lightning/Layer.hpp

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+//Copyright (c) 2021 Ultimaker B.V.
+//CuraEngine is released under the terms of the AGPLv3 or higher.
+
+#ifndef LIGHTNING_LAYER_H
+#define LIGHTNING_LAYER_H
+
+#include "../../EdgeGrid.hpp"
+#include "../../Polygon.hpp"
+
+#include <memory>
+#include <vector>
+#include <list>
+#include <unordered_map>
+#include <optional>
+
+namespace Slic3r::FillLightning
+{
+
+class Node;
+using NodeSPtr = std::shared_ptr<Node>;
+using SparseNodeGrid = std::unordered_multimap<Point, std::weak_ptr<Node>, PointHash>;
+
+struct GroundingLocation
+{
+    NodeSPtr tree_node; //!< not null if the gounding location is on a tree
+    std::optional<Point> boundary_location; //!< in case the gounding location is on the boundary
+    Point p() const;
+};
+
+/*!
+ * A layer of the lightning fill.
+ *
+ * Contains the trees to be printed and propagated to the next layer below.
+ */
+class Layer
+{
+public:
+    std::vector<NodeSPtr> tree_roots;
+
+    void generateNewTrees
+    (
+        const Polygons& current_overhang,
+        const Polygons& current_outlines,
+        const BoundingBox& current_outlines_bbox,
+        const EdgeGrid::Grid& outline_locator,
+        coord_t supporting_radius,
+        coord_t wall_supporting_radius,
+        const std::function<void()> &throw_on_cancel_callback
+    );
+
+    /*! Determine & connect to connection point in tree/outline.
+     * \param min_dist_from_boundary_for_tree If the unsupported point is closer to the boundary than this then don't consider connecting it to a tree
+     */
+    GroundingLocation getBestGroundingLocation
+    (
+        const Point& unsupported_location,
+        const Polygons& current_outlines,
+        const BoundingBox& current_outlines_bbox,
+        const EdgeGrid::Grid& outline_locator,
+        coord_t supporting_radius,
+        coord_t wall_supporting_radius,
+        const SparseNodeGrid& tree_node_locator,
+        const NodeSPtr& exclude_tree = nullptr
+    );
+
+    /*!
+     * \param[out] new_child The new child node introduced
+     * \param[out] new_root The new root node if one had been made
+     * \return Whether a new root was added
+     */
+    bool attach(const Point& unsupported_location, const GroundingLocation& ground, NodeSPtr& new_child, NodeSPtr& new_root);
+
+    void reconnectRoots
+    (
+        std::vector<NodeSPtr>& to_be_reconnected_tree_roots,
+        const Polygons& current_outlines,
+        const BoundingBox& current_outlines_bbox,
+        const EdgeGrid::Grid& outline_locator,
+        coord_t supporting_radius,
+        coord_t wall_supporting_radius
+    );
+
+    Polylines convertToLines(const Polygons& limit_to_outline, coord_t line_overlap) const;
+
+    coord_t getWeightedDistance(const Point& boundary_loc, const Point& unsupported_location);
+
+    void fillLocator(SparseNodeGrid& tree_node_locator, const BoundingBox& current_outlines_bbox);
+};
+
+} // namespace Slic3r::FillLightning
+
+#endif // LIGHTNING_LAYER_H