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107 lines
3.1 KiB
C++
107 lines
3.1 KiB
C++
#ifndef NETGEN_BOUNDARYLAYER_HPP
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#define NETGEN_BOUNDARYLAYER_HPP
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#include <core/array.hpp>
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#include <mystdlib.h>
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#include <meshing.hpp>
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namespace netgen
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{
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///
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DLL_HEADER extern void InsertVirtualBoundaryLayer (Mesh & mesh);
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/// Create a typical prismatic boundary layer on the given
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/// surfaces
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struct SpecialBoundaryPoint {
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struct GrowthGroup {
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Array<int> faces;
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Vec<3> growth_vector;
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Array<PointIndex> new_points;
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GrowthGroup(FlatArray<int> faces_, FlatArray<Vec<3>> normals);
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GrowthGroup(const GrowthGroup &) = default;
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GrowthGroup() = default;
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};
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// std::map<int, Vec<3>> normals;
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Array<GrowthGroup> growth_groups;
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Vec<3> separating_direction;
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SpecialBoundaryPoint( const std::map<int, Vec<3>> & normals );
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SpecialBoundaryPoint() = default;
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};
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DLL_HEADER void GenerateBoundaryLayer (Mesh & mesh,
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const BoundaryLayerParameters & blp);
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DLL_HEADER int /* new_domain_number */ GenerateBoundaryLayer2 (Mesh & mesh, int domain, const Array<double> & thicknesses, bool should_make_new_domain=true, const Array<int> & boundaries=Array<int>{});
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class BoundaryLayerTool
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{
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public:
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BoundaryLayerTool(Mesh & mesh_, const BoundaryLayerParameters & params_);
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void ProcessParameters();
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void Perform();
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Mesh & mesh;
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MeshTopology & topo;
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BoundaryLayerParameters params;
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Array<Vec<3>, PointIndex> growthvectors;
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Table<SurfaceElementIndex, PointIndex> p2sel;
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BitArray domains, is_edge_moved, is_boundary_projected, is_boundary_moved;
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Array<SegmentIndex> moved_segs;
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int max_edge_nr, nfd_old, ndom_old;
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Array<int> new_mat_nrs;
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BitArray moved_surfaces;
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int np, nseg, nse, ne;
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double total_height;
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// These parameters are derived from given BoundaryLayerParameters and the Mesh
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Array<double> par_heights;
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Array<int> par_surfid;
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map<string, string> par_new_mat;
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Array<size_t> par_project_boundaries;
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bool have_single_segments;
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Array<Segment> segments, new_segments;
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Array<Array<PointIndex>, PointIndex> mapto;
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Array<PointIndex, PointIndex> mapfrom;
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Array<double> surfacefacs;
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Array<int> si_map;
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std::map<PointIndex, SpecialBoundaryPoint> special_boundary_points;
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std::map<PointIndex, std::tuple<Vec<3>*, double>> growth_vector_map;
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// major steps called in Perform()
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void CreateNewFaceDescriptors();
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void CreateFaceDescriptorsSides();
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void CalculateGrowthVectors();
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Array<Array<pair<SegmentIndex, int>>, SegmentIndex> BuildSegMap();
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BitArray ProjectGrowthVectorsOnSurface();
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void InterpolateSurfaceGrowthVectors();
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void InterpolateGrowthVectors();
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void LimitGrowthVectorLengths();
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void InsertNewElements(FlatArray<Array<pair<SegmentIndex, int>>, SegmentIndex> segmap, const BitArray & in_surface_direction);
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void SetDomInOut();
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void SetDomInOutSides();
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void AddSegments();
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void FixVolumeElements();
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Vec<3> getNormal(const Element2d & el)
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{
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auto v0 = mesh[el[0]];
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return Cross(mesh[el[1]]-v0, mesh[el[2]]-v0).Normalize();
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}
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Vec<3> getEdgeTangent(PointIndex pi, int edgenr);
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};
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} // namespace netgen
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#endif // NETGEN_BOUNDARYLAYER_HPP
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