RVD_callback.h

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#ifndef GEOGRAM_VORONOI_RVD_CALLBACK
#define GEOGRAM_VORONOI_RVD_CALLBACK
 
#include <geogram/basic/common.h>
#include <geogram/voronoi/generic_RVD_vertex.h>
#include <geogram/mesh/mesh.h>
#include <geogram/basic/numeric.h>
#include <geogram/basic/attributes.h>
#include <geogram/basic/thread_sync.h>
 
namespace GEOGen {
    class SymbolicVertex;
    class Polygon;
    class ConvexCell;
}
 
namespace GEO {
    class RVDVertexMap;
    class Mesh;
}
 
namespace GEO {
 
    /***************************************************************/
 
    class GEOGRAM_API RVDCallback {
    public:
 
    RVDCallback();
 
    virtual ~RVDCallback();
 
    virtual void begin();
 
    virtual void end();
 
    index_t seed() const {
        return seed_;
    }
 
    index_t simplex() const {
        return simplex_;
    }
 
    void set_spinlocks(Process::SpinLockArray* spinlocks) {
        spinlocks_ = spinlocks;
    }
 
    protected:
    index_t seed_;
    index_t simplex_;
    Process::SpinLockArray* spinlocks_;
    };
 
    /***************************************************************/
 
    class GEOGRAM_API RVDPolygonCallback : public RVDCallback {
    public:
 
        RVDPolygonCallback();
 
        ~RVDPolygonCallback() override;
 
        void begin() override;
 
        void end() override;
 
        virtual void operator() (
            index_t v,
            index_t t,
            const GEOGen::Polygon& C
        ) const;
 
    };
 
    /***************************************************************/
 
    class GEOGRAM_API RVDPolyhedronCallback : public RVDCallback {
    public:
 
        RVDPolyhedronCallback();
 
        ~RVDPolyhedronCallback() override;
 
        void begin() override;
 
        void end() override;
 
 
        virtual void operator() (
            index_t v,
            index_t t,
            const GEOGen::ConvexCell& C
        ) const;
 
 
        virtual void begin_polyhedron(index_t seed, index_t tetrahedron);
 
        virtual void begin_facet(index_t facet_seed, index_t facet_tet);
 
        virtual void vertex(
            const double* geometry, const GEOGen::SymbolicVertex& symb
        );
 
        virtual void end_facet();
 
        virtual void end_polyhedron();
 
        index_t tet() const {
            return simplex();
        }
 
        index_t facet_seed() const {
            return facet_seed_;
        }
 
        index_t facet_tet() const {
            return facet_tet_;
        }
 
        void set_simplify_internal_tet_facets(bool x) {
            simplify_internal_tet_facets_ = x;
        }
 
        void set_simplify_voronoi_facets(bool x) {
            simplify_voronoi_facets_ = x;
            if(x) {
                set_simplify_internal_tet_facets(true);
                set_use_mesh(true);
            }
        }
 
        void set_simplify_boundary_facets(bool x, double angle_threshold=45.0) {
            simplify_boundary_facets_ = x;
            if(x) {
                set_simplify_voronoi_facets(true);
                simplify_boundary_facets_angle_threshold_ = angle_threshold;
            } else {
                simplify_boundary_facets_angle_threshold_ = 0.0;
            }
        }
 
        void set_tessellate_non_convex_facets(bool x) {
            tessellate_non_convex_facets_ = x;
        }
 
 
        void set_use_mesh(bool x);
 
        void set_dimension(index_t dim) {
            if(use_mesh_) {
                mesh_.vertices.set_dimension(dim);
            }
        }
 
    protected:
        virtual void begin_polyhedron_internal(
            index_t seed, index_t tetrahedron
        );
 
        virtual void begin_facet_internal(
            index_t facet_seed, index_t facet_tet
        );
 
        virtual void vertex_internal(
            const double* geometry, const GEOGen::SymbolicVertex& symb
        );
 
        virtual void end_facet_internal();
 
        virtual void end_polyhedron_internal();
 
        virtual void process_polyhedron_mesh();
 
    protected:
 
        index_t facet_seed_;
        index_t facet_tet_;
        index_t last_seed_;
 
        bool simplify_internal_tet_facets_;
        bool simplify_voronoi_facets_;
        bool simplify_boundary_facets_;
        double simplify_boundary_facets_angle_threshold_;
        bool tessellate_non_convex_facets_;
 
        bool use_mesh_;
        bool facet_is_skipped_;
 
        Mesh mesh_;
        Attribute<GEOGen::SymbolicVertex> mesh_vertex_sym_;
        Attribute<index_t> mesh_facet_seed_;
        Attribute<index_t> mesh_facet_tet_;
        RVDVertexMap* vertex_map_;
        vector<index_t> base_current_facet_;
    };
 
    /***************************************************************/
 
    class GEOGRAM_API BuildRVDMesh : public RVDPolyhedronCallback {
    public:
 
        BuildRVDMesh(Mesh& output_mesh);
 
        ~BuildRVDMesh() override;
 
        void set_generate_ids(bool x);
 
        void set_shrink(double x);
 
        void begin() override;
 
        void end() override;
 
        void begin_polyhedron(index_t seed, index_t tetrahedron) override;
 
        void begin_facet(index_t facet_seed, index_t facet_tet_facet) override;
 
        void vertex(
            const double* geometry, const GEOGen::SymbolicVertex& symb
        ) override;
 
        void end_facet() override;
 
        void end_polyhedron() override;
 
        void process_polyhedron_mesh() override;
 
    private:
        vector<index_t> current_facet_;
        Mesh& output_mesh_;
        RVDVertexMap* global_vertex_map_;
        RVDVertexMap* cell_vertex_map_;
        double shrink_;
        bool generate_ids_;
        Attribute<int> cell_id_;
        Attribute<int> seed_id_;
        Attribute<int> vertex_id_;
        Attribute<int> facet_seed_id_;
        index_t current_cell_id_;
    };
 
 
    /***************************************************************/
 
}
 
#endif