Geogram  Version 1.9.1-rc
A programming library of geometric algorithms
mesh_manifold_harmonics.h
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39 
40 #ifndef GEOGRAM_MESH_MESH_MANIFOLD_HARMONICS
41 #define GEOGRAM_MESH_MESH_MANIFOLD_HARMONICS
42 
47 #include <geogram/basic/common.h>
48 #include <geogram/basic/numeric.h>
49 #include <geogram/basic/memory.h>
50 
51 namespace GEO {
52  class Mesh;
53 
54  enum LaplaceBeltramiDiscretization {
55  COMBINATORIAL, // 1.0 everywhere
56  UNIFORM, // combinatorial divided by node degree
57  FEM_P1, // Linear finite elements
58  FEM_P1_LUMPED // Linear finite elements with lumped mass matrix
59  };
60 
77  Mesh& M, index_t nb_eigens,
78  LaplaceBeltramiDiscretization discretization,
79  const std::string& attribute_name = "eigen",
80  double shift = 0.0,
81  bool print_spectrum = false
82  );
83 
84 
89  typedef void (*ManifoldHarmonicsCallback)(
90  index_t eigen_index,
91  double eigen_val, const double* eigen_vector,
92  void* client_data
93  );
94 
109  Mesh& M, index_t nb_eigens,
110  LaplaceBeltramiDiscretization discretization,
111  ManifoldHarmonicsCallback callback,
112  index_t nb_eigens_per_band = 30,
113  double initial_shift = 0.0,
114  void* client_data = nullptr
115  );
116 
117 }
118 
119 #endif
Represents a mesh.
Definition: mesh.h:2693
Common include file, providing basic definitions. Should be included before anything else by all head...
Types and functions for memory manipulation.
Global Vorpaline namespace.
Definition: basic.h:55
void(* ManifoldHarmonicsCallback)(index_t eigen_index, double eigen_val, const double *eigen_vector, void *client_data)
A function pointer to be used with mesh_compute_manifold_harmonics_by_bands()
void mesh_compute_manifold_harmonics(Mesh &M, index_t nb_eigens, LaplaceBeltramiDiscretization discretization, const std::string &attribute_name="eigen", double shift=0.0, bool print_spectrum=false)
Computes the Manifold Harmonics basis functions.
geo_index_t index_t
The type for storing and manipulating indices.
Definition: numeric.h:329
void mesh_compute_manifold_harmonics_by_bands(Mesh &M, index_t nb_eigens, LaplaceBeltramiDiscretization discretization, ManifoldHarmonicsCallback callback, index_t nb_eigens_per_band=30, double initial_shift=0.0, void *client_data=nullptr)
Computes Laplacian eigenfunctions band by band.
Types and functions for numbers manipulation.