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https://github.com/NGSolve/netgen.git
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428 lines
10 KiB
C++
428 lines
10 KiB
C++
#ifndef NGINTERFACE_V2
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#define NGINTERFACE_V2
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/**************************************************************************/
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/* File: nginterface_v2.hpp */
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/* Author: Joachim Schoeberl */
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/* Date: May 09 */
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/**************************************************************************/
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#include <core/ngcore.hpp>
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/*
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C++ interface to Netgen
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*/
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#ifndef NGINTERFACE
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// implemented element types:
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enum NG_ELEMENT_TYPE {
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NG_PNT = 0,
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NG_SEGM = 1, NG_SEGM3 = 2,
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NG_TRIG = 10, NG_QUAD=11, NG_TRIG6 = 12, NG_QUAD6 = 13, NG_QUAD8 = 14,
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NG_TET = 20, NG_TET10 = 21,
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NG_PYRAMID = 22, NG_PRISM = 23, NG_PRISM12 = 24, NG_PRISM15 = 27, NG_PYRAMID13 = 28,
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NG_HEX = 25, NG_HEX20 = 26
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};
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enum NG_REFINEMENT_TYPE { NG_REFINE_H = 0, NG_REFINE_P = 1, NG_REFINE_HP = 2 };
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#endif
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// #ifndef PARALLEL
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// typedef int MPI_Comm;
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// #endif
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namespace netgen
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{
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using namespace std;
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using namespace ngcore;
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// extern DLL_HEADER NgMPI_Comm ng_comm;
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static constexpr int POINTINDEX_BASE = 1;
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struct T_EDGE2
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{
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// int orient:1;
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// int nr:31; // 0-based
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int nr; // 0-based
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};
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struct T_FACE2
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{
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// int orient:3;
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// int nr:29; // 0-based
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int nr; // 0-based
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};
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template <typename T>
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class Ng_Buffer
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{
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size_t s;
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T * data;
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public:
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Ng_Buffer (size_t as, T * adata)
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: s(as), data(adata) { ; }
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Ng_Buffer (Ng_Buffer && buffer)
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: s(buffer.Size()), data(buffer.Release()) { ; }
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~Ng_Buffer () { delete [] data; }
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size_t Size() const { return s; }
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T * Release() { T * hd = data; data = nullptr; return hd; }
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};
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template <typename T, int S>
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class Ng_BufferMS
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{
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size_t s;
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T data[S];
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public:
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Ng_BufferMS (size_t as) : s(as) { ; }
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size_t Size() const { return s; }
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T & operator[] (size_t i) { return data[i]; }
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T operator[] (size_t i) const { return data[i]; }
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};
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class Ng_Element
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{
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class Ng_Points
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{
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public:
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size_t num;
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const int * ptr;
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size_t Size() const { return num; }
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int operator[] (size_t i) const { return ptr[i]-POINTINDEX_BASE; }
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};
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class Ng_Vertices
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{
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public:
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size_t num;
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const int * ptr;
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size_t Size() const { return num; }
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int operator[] (size_t i) const { return ptr[i]-POINTINDEX_BASE; }
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};
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class Ng_Edges
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{
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public:
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size_t num;
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const T_EDGE2 * ptr;
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size_t Size() const { return num; }
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int operator[] (size_t i) const { return ptr[i].nr; }
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};
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class Ng_Faces
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{
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public:
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size_t num;
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const T_FACE2 * ptr;
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size_t Size() const { return num; }
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int operator[] (size_t i) const { return ptr[i].nr; }
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};
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class Ng_Facets
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{
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public:
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size_t num;
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int base;
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const int * ptr;
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size_t Size() const { return num; }
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int operator[] (size_t i) const { return ptr[i]-base; }
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};
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public:
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NG_ELEMENT_TYPE type;
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int index; // material / boundary condition
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const string * mat; // material / boundary label
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NG_ELEMENT_TYPE GetType() const { return type; }
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int GetIndex() const { return index-1; }
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Ng_Points points; // all points
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Ng_Vertices vertices;
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Ng_Edges edges;
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Ng_Faces faces;
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Ng_Facets facets;
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bool is_curved;
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};
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class Ng_Point
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{
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double * pt;
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public:
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Ng_Point (double * apt) : pt(apt) { ; }
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double operator[] (size_t i)
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{ return pt[i]; }
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operator const double * () { return pt; }
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};
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template <int DIM> class Ng_Node;
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template <>
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class Ng_Node<0>
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{
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class Ng_Elements
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{
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public:
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size_t ne;
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const int * ptr;
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size_t Size() const { return ne; }
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int operator[] (size_t i) const { return ptr[i]; }
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};
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public:
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Ng_Elements elements;
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Ng_Elements bnd_elements;
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};
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template <>
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class Ng_Node<1>
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{
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class Ng_Vertices
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{
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public:
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const int * ptr;
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size_t Size() const { return 2; }
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int operator[] (size_t i) const { return ptr[i]-POINTINDEX_BASE; }
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};
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public:
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Ng_Vertices vertices;
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};
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template <>
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class Ng_Node<2>
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{
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class Ng_Vertices
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{
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public:
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size_t nv;
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const int * ptr;
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size_t Size() const { return nv; }
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int operator[] (size_t i) const { return ptr[i]-POINTINDEX_BASE; }
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};
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/*
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class Ng_Edges
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{
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public:
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size_t ned;
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const int * ptr;
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size_t Size() const { return ned; }
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int operator[] (size_t i) const { return ptr[i]-1; }
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};
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*/
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public:
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Ng_Vertices vertices;
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// Ng_Edges edges;
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int surface_el; // -1 if face not on surface
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};
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class Mesh;
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inline void DummyTaskManager2 (function<void(int,int)> func)
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{ func(0,1); }
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inline void DummyTracer2 (string, bool) { ; }
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class DLL_HEADER Ngx_Mesh
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{
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private:
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shared_ptr<Mesh> mesh;
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public:
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// Ngx_Mesh () { ; }
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// Ngx_Mesh(class Mesh * amesh) : mesh(amesh) { ; }
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/** reuse a netgen-mesh **/
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Ngx_Mesh (shared_ptr<Mesh> amesh);
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/** load a new mesh **/
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Ngx_Mesh (string filename, NgMPI_Comm acomm = NgMPI_Comm{});
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void LoadMesh (const string & filename, NgMPI_Comm comm = NgMPI_Comm{});
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void LoadMesh (istream & str, NgMPI_Comm comm = NgMPI_Comm{});
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void SaveMesh (ostream & str) const;
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void UpdateTopology ();
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void DoArchive (Archive & archive);
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const NgMPI_Comm & GetCommunicator() const;
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virtual ~Ngx_Mesh();
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bool Valid () const { return mesh != NULL; }
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int GetDimension() const;
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int GetNLevels() const;
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size_t GetNVLevel (int level) const;
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int GetNElements (int dim) const;
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int GetNNodes (int nt) const;
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Ng_Point GetPoint (int nr) const;
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template <int DIM>
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Ng_Element GetElement (size_t nr) const;
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template <int DIM>
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int GetElementIndex (size_t nr) const;
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/// material/boundary label of region, template argument is co-dimension
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template <int DIM>
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const string & GetMaterialCD (int region_nr) const;
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/// Curved Elements:
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/// elnr .. element nr
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/// xi..... DIM_EL local coordinates
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/// x ..... DIM_SPACE global coordinates
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/// dxdxi...DIM_SPACE x DIM_EL Jacobian matrix (row major storage)
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template <int DIM_EL, int DIM_SPACE>
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void ElementTransformation (int elnr,
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const double * xi,
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double * x,
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double * dxdxi) const;
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/// Curved Elements:
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/// elnr .. element nr
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/// npts .. number of points
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/// xi..... DIM_EL local coordinates
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/// sxi ... step xi
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/// x ..... DIM_SPACE global coordinates
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/// dxdxi...DIM_SPACE x DIM_EL Jacobian matrix (row major storage)
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template <int DIM_EL, int DIM_SPACE, typename T>
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void MultiElementTransformation (int elnr, int npts,
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const T * xi, size_t sxi,
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T * x, size_t sx,
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T * dxdxi, size_t sdxdxi) const;
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template <int DIM>
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const Ng_Node<DIM> GetNode (int nr) const;
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Ng_BufferMS<int,4> GetFaceEdges (int fnr) const;
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template <int DIM>
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int GetNNodes ();
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// returns domain numbers of domains next to boundary bnr -> (domin, domout)
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// 3D only
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// std::pair<int,int> GetBoundaryNeighbouringDomains (int bnr);
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template <int DIM>
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void SetRefinementFlag (size_t elnr, bool flag);
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void Curve (int order);
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int GetCurveOrder ();
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void Refine (NG_REFINEMENT_TYPE reftype,
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void (*taskmanager)(function<void(int,int)>) = &DummyTaskManager2,
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void (*tracer)(string, bool) = &DummyTracer2);
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int GetHPElementLevel (int ei, int dir) const;
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void GetParentNodes (int ni, int * parents) const;
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int GetParentElement (int ei) const;
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int GetParentSElement (int ei) const;
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bool HasParentEdges() const;
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tuple<int, std::array<int,3>> GetParentEdges (int enr) const;
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tuple<int, std::array<int,4>> GetParentFaces (int fnr) const;
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int GetNIdentifications() const;
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int GetIdentificationType(int idnr) const;
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Ng_Buffer<int[2]> GetPeriodicVertices(int idnr) const;
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// Find element of point, returns local coordinates
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template <int DIM>
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int FindElementOfPoint
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(double * p, double * lami,
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bool build_searchtrees = false,
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int * const indices = NULL, int numind = 0) const;
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// for MPI-parallel
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FlatArray<int> GetDistantProcs (int nodetype, int locnum) const;
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size_t GetGlobalVertexNum (int locnum) const;
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shared_ptr<Mesh> GetMesh () const { return mesh; }
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shared_ptr<Mesh> SelectMesh () const;
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inline auto GetTimeStamp() const;
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// also added from nginterface.h, still 1-based, need redesign
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void HPRefinement (int levels, double parameter = 0.125,
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bool setorders = true,bool ref_level = false);
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size_t GetNP() const;
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int GetSurfaceElementSurfaceNumber (size_t ei) const;
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int GetSurfaceElementFDNumber (size_t ei) const;
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int GetElementOrder (int enr) const;
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void GetElementOrders (int enr, int * ox, int * oy, int * oz) const;
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void SetElementOrder (int enr, int order);
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void SetElementOrders (int enr, int ox, int oy, int oz);
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int GetSurfaceElementOrder (int enr) const;
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void GetSurfaceElementOrders (int enr, int * ox, int * oy) const;
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void SetSurfaceElementOrder (int enr, int order);
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void SetSurfaceElementOrders (int enr, int ox, int oy);
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int GetClusterRepVertex (int vi) const;
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int GetClusterRepEdge (int edi) const;
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int GetClusterRepFace (int fai) const;
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int GetClusterRepElement (int eli) const;
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};
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DLL_HEADER Ngx_Mesh * LoadMesh (const string & filename);
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}
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#ifdef HAVE_NETGEN_SOURCES
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#include <meshing.hpp>
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namespace netgen
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{
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#ifdef __GNUC__
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#define NGX_INLINE __attribute__ ((__always_inline__)) inline
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#else
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#define NGX_INLINE inline
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#endif
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#include <nginterface_v2_impl.hpp>
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}
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#endif
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#endif
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